| 1 |
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| 2 | kmk Quick Reference
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| 3 | ===================
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| 4 |
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| 5 | This is an attempt at summarizing all directives, functions, special variables,
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| 6 | special targets, built-in commands, external commands, and ``kmk``-expressions.
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| 7 | Since *all* the features are included, the quickness of this reference can be
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| 8 | disputed. ;-)
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| 9 |
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| 10 |
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| 11 |
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| 12 | Directives
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| 13 | ----------
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| 14 |
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| 15 | Here is a summary of the directives ``kmk`` recognizes:
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| 16 |
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| 17 | Define a multi-line, recursively-expanded variable::
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| 18 |
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| 19 | define variable
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| 20 | endef
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| 21 |
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| 22 | Conditionally evaluate part of the makefile::
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| 23 |
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| 24 | ifdef variable
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| 25 | ifndef variable
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| 26 | ifeq (a,b)
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| 27 | ifeq "a" "b"
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| 28 | ifeq 'a' 'b'
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| 29 | ifneq (a,b)
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| 30 | ifneq "a" "b"
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| 31 | ifneq 'a' 'b'
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| 32 | if1of (set-a,set-b) [1]
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| 33 | ifn1of (set-a,set-b) [1]
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| 34 | if expression [1]
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| 35 | else
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| 36 | endif
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| 37 |
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| 38 | Include another makefile::
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| 39 |
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| 40 | include file
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| 41 | -include file
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| 42 | sinclude file
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| 43 |
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| 44 | Include another dependency file [1]_::
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| 45 |
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| 46 | includedep file
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| 47 |
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| 48 | Define a variable, overriding any previous definition, even one from the
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| 49 | command line::
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| 50 |
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| 51 | override variable = value
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| 52 | override variable := value
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| 53 | override variable += value
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| 54 | override variable <= value [1]
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| 55 | override variable ?= value
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| 56 | override define variable
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| 57 | endef
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| 58 |
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| 59 | Tell ``kmk`` to export all variables to child processes by default::
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| 60 |
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| 61 | export
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| 62 |
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| 63 | Tell ``kmk`` whether or not to export a particular variable to child
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| 64 | processes::
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| 65 |
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| 66 | export variable
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| 67 | export variable = value
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| 68 | export variable := value
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| 69 | export variable += value
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| 70 | export variable <= value [1]
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| 71 | export variable ?= value
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| 72 | unexport variable
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| 73 |
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| 74 | Define a variable in the local context instead of the global one [1]_::
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| 75 |
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| 76 | local variable = value
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| 77 | local variable := value
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| 78 | local variable += value
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| 79 | local variable <= value
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| 80 | local variable ?= value
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| 81 | local define variable
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| 82 | endef
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| 83 |
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| 84 | Specify a search path for files matching a ``%`` pattern::
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| 85 |
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| 86 | vpath pattern path
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| 87 |
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| 88 | Remove all search paths previously specified for pattern::
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| 89 |
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| 90 | vpath pattern
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| 91 |
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| 92 | Remove all search paths previously specified in any vpath directive::
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| 93 |
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| 94 | vpath
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| 95 |
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| 96 |
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| 97 |
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| 98 | Automatic variables
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| 99 | -------------------
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| 100 |
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| 101 | Here is a summary of the automatic variables.
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| 102 |
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| 103 | +-----------+-----------------------------------------------------------------+
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| 104 | | Variable | Description |
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| 105 | +===========+=================================================================+
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| 106 | | ``$@`` | The file name of the target. |
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| 107 | +-----------+-----------------------------------------------------------------+
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| 108 | | ``$<`` | The name of the first prerequisite. |
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| 109 | +-----------+-----------------------------------------------------------------+
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| 110 | | ``$?`` | The names of all the prerequisites that are newer than the |
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| 111 | | | target, with spaces between them. |
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| 112 | +-----------+-----------------------------------------------------------------+
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| 113 | | ``$^`` | The names of all the prerequisites, duplicates omitted. |
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| 114 | +-----------+-----------------------------------------------------------------+
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| 115 | | ``$+`` | The names of all the prerequisites, duplicates and order |
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| 116 | | | preserved |
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| 117 | +-----------+-----------------------------------------------------------------+
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| 118 | | ``$*`` | The stem with which an implicit rule matches. |
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| 119 | +-----------+-----------------------------------------------------------------+
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| 120 | | ``$|`` | The name of all the order only prerequisites. |
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| 121 | +-----------+-----------------------------------------------------------------+
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| 122 | | ``$(@D)`` | The directory part of ``$@``. |
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| 123 | +-----------+-----------------------------------------------------------------+
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| 124 | | ``$(<D)`` | The directory part of ``$<``. |
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| 125 | +-----------+-----------------------------------------------------------------+
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| 126 | | ``$(?D)`` | The directory part of ``$?``. |
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| 127 | +-----------+-----------------------------------------------------------------+
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| 128 | | ``$(^D)`` | The directory part of ``%^``. |
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| 129 | +-----------+-----------------------------------------------------------------+
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| 130 | | ``$(+D)`` | The directory part of ``$+``. |
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| 131 | +-----------+-----------------------------------------------------------------+
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| 132 | | ``$(*D)`` | The directory part of ``$*``. |
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| 133 | +-----------+-----------------------------------------------------------------+
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| 134 | | ``$(|D)`` | The directory part of ``$|``. |
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| 135 | +-----------+-----------------------------------------------------------------+
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| 136 | | ``$(@F)`` | The file-within-directory part of ``$@``. |
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| 137 | +-----------+-----------------------------------------------------------------+
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| 138 | | ``$(<F)`` | The file-within-directory part of ``$<``. |
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| 139 | +-----------+-----------------------------------------------------------------+
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| 140 | | ``$(?F)`` | The file-within-directory part of ``$?``. |
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| 141 | +-----------+-----------------------------------------------------------------+
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| 142 | | ``$(^F)`` | The file-within-directory part of ``$^``. |
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| 143 | +-----------+-----------------------------------------------------------------+
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| 144 | | ``$(+F)`` | The file-within-directory part of ``$+``. |
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| 145 | +-----------+-----------------------------------------------------------------+
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| 146 | | ``$(*F)`` | The file-within-directory part of ``$*``. |
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| 147 | +-----------+-----------------------------------------------------------------+
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| 148 | | ``$(|F)`` | The file-within-directory part of ``$|``. |
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| 149 | +-----------+-----------------------------------------------------------------+
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| 150 |
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| 151 |
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| 152 |
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| 153 | Special variables
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| 154 | -----------------
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| 155 |
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| 156 | All variables starting with a ``.`` is reserved by ``kmk``. The following
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| 157 | variables are specially used or/and defined by ``kmk``:
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| 158 |
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| 159 | +--------------------------+--------------------------------------------------+
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| 160 | | Variable | Description |
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| 161 | +==========================+==================================================+
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| 162 | | ``.DEFAULT_GOAL`` | The makefile default goal. You can set this in |
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| 163 | | | the makefile, if you don't it will default to |
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| 164 | | | the first target that is encountered. |
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| 165 | +--------------------------+--------------------------------------------------+
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| 166 | | ``.FEATURES`` | List of GNU ``make`` features. Do not set this. |
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| 167 | +--------------------------+--------------------------------------------------+
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| 168 | | ``.INCLUDE_DIRS`` | List of include directories, ``-I`` arguments |
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| 169 | | | and defaults. Do not set this. |
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| 170 | +--------------------------+--------------------------------------------------+
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| 171 | | ``.RECIPEPREFIX`` | Recipe prefix, defaults to tab. |
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| 172 | +--------------------------+--------------------------------------------------+
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| 173 | | ``.VARIABLES`` | Special variable which exands to the list of |
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| 174 | | | variable. Do not set this. |
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| 175 | +--------------------------+--------------------------------------------------+
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| 176 | | ``CURDIR`` | Set to the pathname of the current working |
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| 177 | | | directory (after all ``-C`` options are |
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| 178 | | | processed, if any). Do not set this. |
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| 179 | +--------------------------+--------------------------------------------------+
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| 180 | | ``KBUILD_VERSION``, | The kBuild version string and the break down |
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| 181 | | ``KBUILD_VERSION_MAJOR``,| into individual components. [1]_ |
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| 182 | | ``KBUILD_VERSION_MINOR``,| |
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| 183 | | ``KBUILD_VERSION_PATCH``,| |
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| 184 | | ``KBUILD_KMK_REVISION`` | |
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| 185 | +--------------------------+--------------------------------------------------+
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| 186 | | ``KBUILD_HOST`` [1]_ | The host operating system. |
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| 187 | +--------------------------+--------------------------------------------------+
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| 188 | | ``KBUILD_HOST_ARCH`` [1]_| The host architecture. |
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| 189 | +--------------------------+--------------------------------------------------+
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| 190 | | ``KBUILD_HOST_CPU`` [1]_ | The host CPU ``kmk`` is built for, set to |
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| 191 | | | ``blend`` if not any particular CPU. |
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| 192 | +--------------------------+--------------------------------------------------+
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| 193 | | ``KBUILD_PATH`` [1]_ | Where the kBuild scripts are. |
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| 194 | +--------------------------+--------------------------------------------------+
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| 195 | | ``KBUILD_BIN_PATH`` [1]_ | Where the host specific kBuild binaries are. |
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| 196 | +--------------------------+--------------------------------------------------+
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| 197 | | ``KMK`` [1]_, | The name with which ``kmk`` was invoked. Using |
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| 198 | | ``MAKE`` | this variable in recipes has special meaning. |
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| 199 | +--------------------------+--------------------------------------------------+
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| 200 | | ``KMK_BUILTIN`` [1]_ | List of built-in commands. |
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| 201 | +--------------------------+--------------------------------------------------+
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| 202 | | ``KMK_FEATURES`` [1]_ | List of ``kmk`` specific features. |
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| 203 | +--------------------------+--------------------------------------------------+
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| 204 | | ``KMK_FLAGS`` [1]_ | The flags given to ``kmk``. You can set this in |
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| 205 | | | the environment or a makefile to set flags. |
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| 206 | | | |
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| 207 | | | It is never appropriate to use ``KMK_FLAGS`` |
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| 208 | | | directly in a recipe line: its contents may not |
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| 209 | | | be quoted correctly for use in the shell. Always |
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| 210 | | | allow recursive ``kmk``'s to obtain these values |
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| 211 | | | through the environment from its parent. |
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| 212 | +--------------------------+--------------------------------------------------+
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| 213 | | ``KMK_LEVEL`` [1]_ | The number of levels of recursion (sub-makes). |
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| 214 | +--------------------------+--------------------------------------------------+
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| 215 | | ``KMK_VERSION`` [1]_ | The GNU ``make`` version number. |
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| 216 | +--------------------------+--------------------------------------------------+
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| 217 | | ``MAKECMDGOALS`` | The targets given to ``kmk`` on the command line.|
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| 218 | | | Do not set this. |
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| 219 | +--------------------------+--------------------------------------------------+
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| 220 | | ``MAKEFILES`` | Makefiles to be read on every invocation of |
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| 221 | | | ``kmk``. |
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| 222 | +--------------------------+--------------------------------------------------+
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| 223 | | ``MAKEFILE_LIST`` | List of the makefiles that ``kmk`` has opened. |
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| 224 | +--------------------------+--------------------------------------------------+
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| 225 | | ``MAKESHELL`` | OS/2 and MS-DOS only, the name of the command |
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| 226 | | | interpreter that is to be used by ``kmk``. This |
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| 227 | | | value takes precedence over the value of SHELL. |
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| 228 | +--------------------------+--------------------------------------------------+
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| 229 | | ``SHELL`` | The name of the default command interpreter, |
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| 230 | | | kmk_ash. You can set SHELL in the makefile to |
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| 231 | | | change the shell used to run recipes. The SHELL |
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| 232 | | | variable is handled specially when importing |
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| 233 | | | from and exporting to the environment. |
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| 234 | +--------------------------+--------------------------------------------------+
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| 235 | | ``SUFFIXES`` | The default list of suffixes before ``kmk`` |
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| 236 | | | reads any makefiles (always empty). |
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| 237 | +--------------------------+--------------------------------------------------+
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| 238 | | ``VPATH`` | Directory search path for files not found in the |
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| 239 | | | current directory. |
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| 240 | +--------------------------+--------------------------------------------------+
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| 241 |
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| 242 |
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| 243 | The following variables reflects ``kmk`` options. Do not set these. [1]_
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| 244 |
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| 245 | +-------------------------------------+---------------------------------------+
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| 246 | | Variable | Description |
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| 247 | +=====================================+=======================================+
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| 248 | | ``KMK_OPTS_JOBS`` | -j slots, ``0`` if not given. |
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| 249 | +-------------------------------------+---------------------------------------+
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| 250 | | ``KMK_OPTS_KEEP_GOING`` | -k indictor (``0``/``1``). |
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| 251 | +-------------------------------------+---------------------------------------+
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| 252 | | ``KMK_OPTS_JUST_PRINT`` | -n indicator (``0``/``1``). |
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| 253 | +-------------------------------------+---------------------------------------+
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| 254 | | ``KMK_OPTS_PRORITY`` | --priority level, ``0`` if not given. |
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| 255 | +-------------------------------------+---------------------------------------+
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| 256 | | ``KMK_OPTS_AFFINITY`` | --affinity mask, ``0`` if not given. |
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| 257 | +-------------------------------------+---------------------------------------+
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| 258 | | ``KMK_OPTS_STATISTICS`` | --statistics indicator (``0``/``1``). |
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| 259 | +-------------------------------------+---------------------------------------+
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| 260 | | ``KMK_OPTS_PRINT_TIME`` | The --print-time value. |
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| 261 | +-------------------------------------+---------------------------------------+
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| 262 | | ``KMK_OPTS_PRETTY_COMMAND_PRINTING``| --pretty-command-printing indicator. |
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| 263 | +-------------------------------------+---------------------------------------+
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| 264 |
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| 265 |
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| 266 |
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| 267 | Special Targets
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| 268 | ---------------
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| 269 |
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| 270 | Certain names have special meanings if they appear as targets.
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| 271 |
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| 272 | +-------------------------------+---------------------------------------------+
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| 273 | | Target | Description |
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| 274 | +===============================+=============================================+
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| 275 | | ``.DEFAULT`` | The recipe is used for any target for which |
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| 276 | | | no rules are found. |
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| 277 | +-------------------------------+---------------------------------------------+
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| 278 | | ``.DELETE_ON_ERROR`` | If mentioned, ``kmk`` will delete the |
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| 279 | | | targets of a rule if it has changed and its |
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| 280 | | | recipe fails or is interrupted. |
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| 281 | +-------------------------------+---------------------------------------------+
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| 282 | | ``.EXPORT_ALL_VARIABLES`` | If mentioned, all variables will by default |
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| 283 | | | be exported to child processes. |
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| 284 | +-------------------------------+---------------------------------------------+
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| 285 | | ``.IGNORE`` | Ignore errors in the execution of the recipe|
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| 286 | | | for the targets ``.IGNORE`` depends on, if |
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| 287 | | | no prequisites all targets are affected. |
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| 288 | +-------------------------------+---------------------------------------------+
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| 289 | | ``.INTERMEDIATE`` | The prerequisites are treated as |
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| 290 | | | intermediate files (implicite rules). |
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| 291 | +-------------------------------+---------------------------------------------+
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| 292 | | ``.LOW_RESOLUTION_TIME`` | ``kmk`` will assume prerequisite files are |
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| 293 | | | created with low resolution time stamps. |
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| 294 | +-------------------------------+---------------------------------------------+
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| 295 | | ``.NOTPARALLEL`` | If mentioned without any prerequisites, |
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| 296 | | | ``kmk`` will run serially as if -j1 was |
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| 297 | | | given. If it has prerequisites ``kmk`` [1]_ |
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| 298 | | | will only do this for the targets among |
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| 299 | | | them. |
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| 300 | +-------------------------------+---------------------------------------------+
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| 301 | | ``.PHONY`` | The prerequisites are considered phony and |
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| 302 | | | will be rebuilt unconditionally. |
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| 303 | +-------------------------------+---------------------------------------------+
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| 304 | | ``.PRECIOUS`` | The targets which ``.PRECIOUS`` depends |
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| 305 | | | will to be deleted if ``kmk`` is killed or |
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| 306 | | | interrupted while their building. |
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| 307 | +-------------------------------+---------------------------------------------+
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| 308 | | ``.SECONDARY`` | The prerequisites are treated as |
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| 309 | | | intermediate files, except that they are |
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| 310 | | | never automatically deleted. If used with |
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| 311 | | | no prerequisites all targets gets this |
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| 312 | | | treatement. |
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| 313 | +-------------------------------+---------------------------------------------+
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| 314 | | ``.SECONDEXPANSION`` | If mentioned, all prerequisite lists after |
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| 315 | | | it will be expanded a second time after all |
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| 316 | | | makefiles have been read. |
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| 317 | +-------------------------------+---------------------------------------------+
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| 318 | | ``.SECONDTARGETEXPANSION`` | If mentioned, all targets after it will be |
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| 319 | | [1]_ | expanded a second time after all makefiles |
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| 320 | | | have been read. |
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| 321 | +-------------------------------+---------------------------------------------+
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| 322 | | ``.SILENT`` | ``kmk`` will not print the recipe for |
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| 323 | | | targets listed as prerequisites, if none |
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| 324 | | | then it applies to all targets. |
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| 325 | +-------------------------------+---------------------------------------------+
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| 326 | | ``.SUFFIXES`` | The prerequisites are the list of suffixes |
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| 327 | | | used in checking for suffix rules. If it |
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| 328 | | | appears without prerequisites it the suffix |
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| 329 | | | will be cleared. |
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| 330 | +-------------------------------+---------------------------------------------+
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| 331 |
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| 332 |
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| 333 |
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| 334 | Commands
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| 335 | --------
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| 336 |
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| 337 | Builtin commands [1]_ all start with ``kmk_builtin_``, so in order to save
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| 338 | space this prefix has been omitted in the table below. All commands comes in an
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| 339 | external edition that can be used by/in the shell, these are prefixed ``kmk_``.
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| 340 |
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| 341 | +---------------+-------------------------------------------------------------+
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| 342 | | Command | Description |
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| 343 | +===============+=============================================================+
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| 344 | | ``append`` | Append text to a file. The builtin version can output the |
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| 345 | | | value of a variable or the commands of a target. |
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| 346 | +---------------+-------------------------------------------------------------+
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| 347 | | ``cat`` | The BSD ``cat`` command. |
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| 348 | +---------------+-------------------------------------------------------------+
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| 349 | | ``chmod`` | The BSD ``chmod`` command. |
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| 350 | +---------------+-------------------------------------------------------------+
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| 351 | | ``cmp`` | The BSD ``cmp`` command. |
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| 352 | +---------------+-------------------------------------------------------------+
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| 353 | | ``cp`` | The BSD ``cp`` command with some twaking. |
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| 354 | +---------------+-------------------------------------------------------------+
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| 355 | | ``echo`` | The BSD ``echo`` command. |
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| 356 | +---------------+-------------------------------------------------------------+
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| 357 | | ``expr`` | The BSD ``expr`` command. |
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| 358 | +---------------+-------------------------------------------------------------+
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| 359 | | ``install`` | The BSD ``install`` command with some tweaking. |
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| 360 | +---------------+-------------------------------------------------------------+
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| 361 | | ``kDepIDB`` | Extract dependencies from a Visual C++ .IDB file. |
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| 362 | +---------------+-------------------------------------------------------------+
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| 363 | | ``ln`` | The BSD ``ln`` command. |
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| 364 | +---------------+-------------------------------------------------------------+
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| 365 | | ``md5sum`` | Typical MD5 sum program, custom kBuild version. |
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| 366 | +---------------+-------------------------------------------------------------+
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| 367 | | ``mkdir`` | The BSD ``mkdir`` command. |
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| 368 | +---------------+-------------------------------------------------------------+
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| 369 | | ``mv`` | The BSD ``mv`` command with some tweaking. |
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| 370 | +---------------+-------------------------------------------------------------+
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| 371 | | ``printf`` | The BSD ``printf`` command. |
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| 372 | +---------------+-------------------------------------------------------------+
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| 373 | | ``rm`` | The BSD ``rm`` command with some tweaking. |
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| 374 | +---------------+-------------------------------------------------------------+
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| 375 | | ``rmdir`` | The BSD ``rmdir`` command with some tweaking. |
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| 376 | +---------------+-------------------------------------------------------------+
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| 377 | | ``sleep`` | Typical ``sleep`` program, custom kBuild version. |
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| 378 | +---------------+-------------------------------------------------------------+
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| 379 | | ``test`` | The BSD ``test`` program with some tweaking. |
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| 380 | +---------------+-------------------------------------------------------------+
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| 381 |
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| 382 | Some additional external commands are available in the ``kmk`` / ``kBuild``
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| 383 | environment (``kSomething`` command are not prefixed with ``kmk_``):
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| 384 |
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| 385 | +---------------+-------------------------------------------------------------+
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| 386 | | Command | Description |
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| 387 | +===============+=============================================================+
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| 388 | | ``kDepPre`` | Extract dependencies from the C/C++ preprocessor output. |
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| 389 | +---------------+-------------------------------------------------------------+
|
|---|
| 390 | | ``kObjCache`` | Simple object file cache program. |
|
|---|
| 391 | +---------------+-------------------------------------------------------------+
|
|---|
| 392 | | ``ash`` | Almquist's shell (NetBSD variant). |
|
|---|
| 393 | +---------------+-------------------------------------------------------------+
|
|---|
| 394 | | ``gmake`` | Vanilla GNU ``make`` from same sources as ``kmk``. |
|
|---|
| 395 | +---------------+-------------------------------------------------------------+
|
|---|
| 396 | | ``redirect`` | Shell avoidance tool. Sets up file descriptors, environment |
|
|---|
| 397 | | | variables and current directory before kicking of program. |
|
|---|
| 398 | +---------------+-------------------------------------------------------------+
|
|---|
| 399 | | ``sed`` | GNU ``sed`` with some tweaks to avoid involving the shell. |
|
|---|
| 400 | +---------------+-------------------------------------------------------------+
|
|---|
| 401 | | ``time`` | Stopwatch utility for measuring program execution time(s). |
|
|---|
| 402 | +---------------+-------------------------------------------------------------+
|
|---|
| 403 |
|
|---|
| 404 |
|
|---|
| 405 |
|
|---|
| 406 | kmk-expression
|
|---|
| 407 | --------------
|
|---|
| 408 |
|
|---|
| 409 | ``kmk``-expressions [1]_ are related to the C/C++ preprocessor in some ways as
|
|---|
| 410 | well as ``nmake`` and BSD ``make``. There are however some peculiarities
|
|---|
| 411 | because of the way GNU ``make`` choose to represent booleans in its function
|
|---|
| 412 | library, so, strings can be turned into boolean by taking any non-empty string
|
|---|
| 413 | as true.
|
|---|
| 414 |
|
|---|
| 415 | Quoting using single quotes results in hard strings, while double quotes and
|
|---|
| 416 | unquoted string results in soft strings that can be converted to number or
|
|---|
| 417 | boolean to fit the situation.
|
|---|
| 418 |
|
|---|
| 419 | Here's the operator table in decending precedence order:
|
|---|
| 420 |
|
|---|
| 421 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 422 | | Operator | Type | Description |
|
|---|
| 423 | +===============+========+=====================================================+
|
|---|
| 424 | | ``defined`` | Unary | Checks if the following variable exists. |
|
|---|
| 425 | +---------------+ +-----------------------------------------------------+
|
|---|
| 426 | | ``exists`` | | Checks if the following file exists. |
|
|---|
| 427 | +---------------+ +-----------------------------------------------------+
|
|---|
| 428 | | ``target`` | | Checks if the following target exists. |
|
|---|
| 429 | +---------------+ +-----------------------------------------------------+
|
|---|
| 430 | | ``bool`` | | Casts the following value to boolean. |
|
|---|
| 431 | +---------------+ +-----------------------------------------------------+
|
|---|
| 432 | | ``num`` | | Casts the following value to a number. |
|
|---|
| 433 | +---------------+ +-----------------------------------------------------+
|
|---|
| 434 | | ``str`` | | Casts the following value to a string. |
|
|---|
| 435 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 436 | | ``!`` | Unary | Logical NOT. |
|
|---|
| 437 | +---------------+ +-----------------------------------------------------+
|
|---|
| 438 | | ``+`` | | Pluss prefix. |
|
|---|
| 439 | +---------------+ +-----------------------------------------------------+
|
|---|
| 440 | | ``-`` | | Minus prefix. |
|
|---|
| 441 | +---------------+ +-----------------------------------------------------+
|
|---|
| 442 | | ``~`` | | Bitwise one's complement. |
|
|---|
| 443 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 444 | | ``*`` | Binary | Multiplication (product). |
|
|---|
| 445 | +---------------+ +-----------------------------------------------------+
|
|---|
| 446 | | ``/`` | | Division (quotient). |
|
|---|
| 447 | +---------------+ +-----------------------------------------------------+
|
|---|
| 448 | | ``%`` | | Modulus (remainder). |
|
|---|
| 449 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 450 | | ``+`` | Binary | Addition (sum). |
|
|---|
| 451 | +---------------+ +-----------------------------------------------------+
|
|---|
| 452 | | ``-`` | | Subtraction (difference). |
|
|---|
| 453 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 454 | | ``<<`` | Binary | Bitwise left shift. |
|
|---|
| 455 | +---------------+ +-----------------------------------------------------+
|
|---|
| 456 | | ``>>`` | | Bitwise right shift. |
|
|---|
| 457 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 458 | | ``<=`` | Binary | Less or equal than. |
|
|---|
| 459 | +---------------+ +-----------------------------------------------------+
|
|---|
| 460 | | ``<`` | | Less than. |
|
|---|
| 461 | +---------------+ +-----------------------------------------------------+
|
|---|
| 462 | | ``>=`` | | Greater or equal than. |
|
|---|
| 463 | +---------------+ +-----------------------------------------------------+
|
|---|
| 464 | | ``>`` | | Greater than. |
|
|---|
| 465 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 466 | | ``==`` | Binary | Equal to. |
|
|---|
| 467 | +---------------+ +-----------------------------------------------------+
|
|---|
| 468 | | ``!=`` | | Not equal to. |
|
|---|
| 469 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 470 | | ``&`` | Binary | Bitwise AND. |
|
|---|
| 471 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 472 | | ``^`` | Binary | Bitwise XOR. |
|
|---|
| 473 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 474 | | ``|`` | Binary | Bitwise OR. |
|
|---|
| 475 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 476 | | ``&&`` | Binary | Logical AND. |
|
|---|
| 477 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 478 | | ``||`` | Binary | Logical OR. |
|
|---|
| 479 | +---------------+--------+-----------------------------------------------------+
|
|---|
| 480 |
|
|---|
| 481 |
|
|---|
| 482 |
|
|---|
| 483 | Built-in functions
|
|---|
| 484 | ------------------
|
|---|
| 485 |
|
|---|
| 486 |
|
|---|
| 487 | String Manipulation Functions:
|
|---|
| 488 |
|
|---|
| 489 | Replace ``from`` with ``to`` in ``text``::
|
|---|
| 490 |
|
|---|
| 491 | $(subst from,to,text)
|
|---|
| 492 |
|
|---|
| 493 | Replace words matching ``pattern`` with ``replacement`` in ``text``::
|
|---|
| 494 |
|
|---|
| 495 | $(patsubst pattern,replacement,text)
|
|---|
| 496 |
|
|---|
| 497 | Remove excess whitespace characters from ``string``::
|
|---|
| 498 |
|
|---|
| 499 | $(strip string)
|
|---|
| 500 |
|
|---|
| 501 | Locate ``find`` in ``text``, returning ``find`` if found::
|
|---|
| 502 |
|
|---|
| 503 | $(findstring find,text)
|
|---|
| 504 |
|
|---|
| 505 | Select words in ``text`` that match one of the ``pattern`` words::
|
|---|
| 506 |
|
|---|
| 507 | $(filter pattern...,text)
|
|---|
| 508 |
|
|---|
| 509 | Select words in ``text`` that do not match any of the ``pattern`` words::
|
|---|
| 510 |
|
|---|
| 511 | $(filter-out pattern...,text)
|
|---|
| 512 |
|
|---|
| 513 | Sort the words in ``list`` lexicographically, removing duplicates::
|
|---|
| 514 |
|
|---|
| 515 | $(sort list)
|
|---|
| 516 |
|
|---|
| 517 | Sort the words in ``list`` lexicographically in reserve order, removing
|
|---|
| 518 | duplicates [1]_::
|
|---|
| 519 |
|
|---|
| 520 | $(rsort list)
|
|---|
| 521 |
|
|---|
| 522 | Count the number of words in ``text``::
|
|---|
| 523 |
|
|---|
| 524 | $(words text)
|
|---|
| 525 |
|
|---|
| 526 | Extract the ``n``\th word (one-origin) of ``text``::
|
|---|
| 527 |
|
|---|
| 528 | $(word n,text)
|
|---|
| 529 |
|
|---|
| 530 | Returns the list of words in ``text`` from ``s`` to ``e`` (one-origin)::
|
|---|
| 531 |
|
|---|
| 532 | $(wordlist s,e,text)
|
|---|
| 533 |
|
|---|
| 534 | Extract the first word of ``names``::
|
|---|
| 535 |
|
|---|
| 536 | $(firstword names...)
|
|---|
| 537 |
|
|---|
| 538 | Extract the last word of ``names``::
|
|---|
| 539 |
|
|---|
| 540 | $(lastword names...)
|
|---|
| 541 |
|
|---|
| 542 | Join two parallel lists of words::
|
|---|
| 543 |
|
|---|
| 544 | $(join list1,list2)
|
|---|
| 545 |
|
|---|
| 546 | Fold ``text`` to upper case [1]_::
|
|---|
| 547 |
|
|---|
| 548 | $(toupper text)
|
|---|
| 549 |
|
|---|
| 550 | Fold ``text`` to lower case [1]_::
|
|---|
| 551 |
|
|---|
| 552 | $(tolower text)
|
|---|
| 553 |
|
|---|
| 554 | String formatting a la the unix ``printf`` command [1]_::
|
|---|
| 555 |
|
|---|
| 556 | $(printf fmt, arg...)
|
|---|
| 557 |
|
|---|
| 558 | Return the length of a string or a (unexpanded) variable [1]_::
|
|---|
| 559 |
|
|---|
| 560 | $(length string)
|
|---|
| 561 | $(length-var var)
|
|---|
| 562 |
|
|---|
| 563 | Find the position of ``needle`` in ``haystack``, returns 0 if not found.
|
|---|
| 564 | Negative ``start`` indices are relative to the end of ``haystack``, while
|
|---|
| 565 | positive ones are one based [1]_::
|
|---|
| 566 |
|
|---|
| 567 | $(pos needle, haystack[, start])
|
|---|
| 568 | $(lastpos needle, haystack[, start])
|
|---|
| 569 |
|
|---|
| 570 | Returns the specified substring. The ``start`` works like with ``$(pos )``.
|
|---|
| 571 | If the substring is partially outside the ``string`` the result will be
|
|---|
| 572 | padded with ``pad`` if present [1]_::
|
|---|
| 573 |
|
|---|
| 574 | $(substr string, start[, length[, pad]])
|
|---|
| 575 |
|
|---|
| 576 | Insert ``in`` into ``str`` at the specified position. ``n`` works like with
|
|---|
| 577 | ``$(pos )``, except that ``0`` is the end of the string [1]_::
|
|---|
| 578 |
|
|---|
| 579 | $(insert in, str[, n[, length[, pad]]])
|
|---|
| 580 |
|
|---|
| 581 | Translate ``string`` exchanging characters in ``from-set`` with ``to-set``,
|
|---|
| 582 | optionally completing ``to-set`` with ``pad-char`` if specified. If no
|
|---|
| 583 | ``pad-char`` characters absent in ``to-set`` will be deleted [1]_::
|
|---|
| 584 |
|
|---|
| 585 | $(translate string, from-set[, to-set[, pad-char]])
|
|---|
| 586 |
|
|---|
| 587 |
|
|---|
| 588 | Functions for file names:
|
|---|
| 589 |
|
|---|
| 590 | Extract the directory part of each file ``name``::
|
|---|
| 591 |
|
|---|
| 592 | $(dir names...)
|
|---|
| 593 |
|
|---|
| 594 | Extract the non-directory part of each file ``name``::
|
|---|
| 595 |
|
|---|
| 596 | $(notdir names...)
|
|---|
| 597 |
|
|---|
| 598 | Extract the suffix (the last ``.`` and following characters) of each file
|
|---|
| 599 | ``name``::
|
|---|
| 600 |
|
|---|
| 601 | $(suffix names...)
|
|---|
| 602 |
|
|---|
| 603 | Extract the base name (name without suffix) of each file name::
|
|---|
| 604 |
|
|---|
| 605 | $(basename names...)
|
|---|
| 606 |
|
|---|
| 607 | Extract the root specification of each file name (a bit complicated on
|
|---|
| 608 | Windows & OS/2) [1]_::
|
|---|
| 609 |
|
|---|
| 610 | $(root names...)
|
|---|
| 611 |
|
|---|
| 612 | Extract the non-root part of each file name (a bit complicated on
|
|---|
| 613 | Windows & OS/2) [1]_::
|
|---|
| 614 |
|
|---|
| 615 | $(notroot names...)
|
|---|
| 616 |
|
|---|
| 617 | Append ``suffix`` to each word in ``names``::
|
|---|
| 618 |
|
|---|
| 619 | $(addsuffix suffix,names...)
|
|---|
| 620 |
|
|---|
| 621 | Prepend ``prefix`` to each word in ``names``::
|
|---|
| 622 |
|
|---|
| 623 | $(addprefix prefix,names...)
|
|---|
| 624 |
|
|---|
| 625 | Find file names matching a shell file name ``pattern`` (not a ``%``
|
|---|
| 626 | pattern)::
|
|---|
| 627 |
|
|---|
| 628 | $(wildcard pattern...)
|
|---|
| 629 |
|
|---|
| 630 | For each file name in ``names``, expand to an absolute name that does not
|
|---|
| 631 | contain any ``.``, ``..``, nor symlinks::
|
|---|
| 632 |
|
|---|
| 633 | $(realpath names...)
|
|---|
| 634 |
|
|---|
| 635 | For each file name in ``names``, expand to an absolute name that does not
|
|---|
| 636 | contain any ``.`` or ``..`` components, but preserves symlinks::
|
|---|
| 637 |
|
|---|
| 638 | $(abspath names...)
|
|---|
| 639 |
|
|---|
| 640 | Same as ``$(abspath )`` except that the current directory can be
|
|---|
| 641 | specified as ``curdir`` [1]_::
|
|---|
| 642 |
|
|---|
| 643 | $(abspathex names...[, curdir])
|
|---|
| 644 |
|
|---|
| 645 |
|
|---|
| 646 | Arithmetic Functions:
|
|---|
| 647 |
|
|---|
| 648 | Returns the sum of the arguments [1]_::
|
|---|
| 649 |
|
|---|
| 650 | $(int-add addend1, addend2[, addendN])
|
|---|
| 651 |
|
|---|
| 652 | Returns the difference between the first argument and the sum of the
|
|---|
| 653 | rest [1]_::
|
|---|
| 654 |
|
|---|
| 655 | $(int-sub minuend, subtrahend[, subtrahendN])
|
|---|
| 656 |
|
|---|
| 657 | Returns the product of the arguments [1]_::
|
|---|
| 658 |
|
|---|
| 659 | $(int-mul factor1, factor2[, factorN])
|
|---|
| 660 |
|
|---|
| 661 | Returns the quotient of first argument and the rest [1]_::
|
|---|
| 662 |
|
|---|
| 663 | $(int-div dividend, divisor[, divisorN])
|
|---|
| 664 |
|
|---|
| 665 | Returns the modulus of the two arguments [1]_::
|
|---|
| 666 |
|
|---|
| 667 | $(int-mod dividend, divisor)
|
|---|
| 668 |
|
|---|
| 669 | Returns the bitwise two-complement of argument [1]_::
|
|---|
| 670 |
|
|---|
| 671 | $(int-not val)
|
|---|
| 672 |
|
|---|
| 673 | Returns the result of a bitwise AND of the arguments [1]_::
|
|---|
| 674 |
|
|---|
| 675 | $(int-and val1, val2[, valN])
|
|---|
| 676 |
|
|---|
| 677 | Returns the result of a bitwise OR of the arguments [1]_::
|
|---|
| 678 |
|
|---|
| 679 | $(int-or val1, val2[, valN])
|
|---|
| 680 |
|
|---|
| 681 | Returns the result of a bitwise XOR of the arguments [1]_::
|
|---|
| 682 |
|
|---|
| 683 | $(int-xor val1, val2[, valN])
|
|---|
| 684 |
|
|---|
| 685 | Returns the ``kmk`` boolean (true = non-empty, false = empty) result
|
|---|
| 686 | of ``val1 == val2`` [1]_::
|
|---|
| 687 |
|
|---|
| 688 | $(int-eq val1, val2)
|
|---|
| 689 |
|
|---|
| 690 | Returns the ``kmk`` boolean result of ``val1 != val2`` [1]_::
|
|---|
| 691 |
|
|---|
| 692 | $(int-ne val1, val2)
|
|---|
| 693 |
|
|---|
| 694 | Returns the ``kmk`` boolean result of ``val1 > val2`` [1]_::
|
|---|
| 695 |
|
|---|
| 696 | $(int-gt val1, val2)
|
|---|
| 697 |
|
|---|
| 698 | Returns the ``kmk`` boolean result of ``val1 >= val2`` [1]_::
|
|---|
| 699 |
|
|---|
| 700 | $(int-ge val1, val2)
|
|---|
| 701 |
|
|---|
| 702 | Returns the ``kmk`` boolean result of ``val1 < val2`` [1]_::
|
|---|
| 703 |
|
|---|
| 704 | $(int-lt val1, val2)
|
|---|
| 705 |
|
|---|
| 706 | Returns the ``kmk`` boolean result of ``val1 <= val2`` [1]_::
|
|---|
| 707 |
|
|---|
| 708 | $(int-le val1, val2)
|
|---|
| 709 |
|
|---|
| 710 |
|
|---|
| 711 | Boolean and Conditional Functions:
|
|---|
| 712 |
|
|---|
| 713 | Condition is false if the ``condition`` evaluates to an empty string
|
|---|
| 714 | (stripped). Evaluate the ``true-part`` if the condition is true, otherwise
|
|---|
| 715 | the ``false-part``::
|
|---|
| 716 |
|
|---|
| 717 | $(if condition,true-part[,false-part])
|
|---|
| 718 |
|
|---|
| 719 | Test if any of the conditions evalues to non-empty string, returning the
|
|---|
| 720 | first one::
|
|---|
| 721 |
|
|---|
| 722 | $(or condition1[,condition2[,condition3[...]]])
|
|---|
| 723 |
|
|---|
| 724 | Test if all of the conditions evaluates to non-empty strings, returning the
|
|---|
| 725 | last one::
|
|---|
| 726 |
|
|---|
| 727 | $(and condition1[,condition2[,condition3[...]]])
|
|---|
| 728 |
|
|---|
| 729 |
|
|---|
| 730 | Test if the two strings are identical, returning ``kmk`` boolean (true =
|
|---|
| 731 | non-empty, false = empty) [2]_::
|
|---|
| 732 |
|
|---|
| 733 | $(eq str1, str2)
|
|---|
| 734 |
|
|---|
| 735 | Invert a ``kmk`` boolean value [2]_::
|
|---|
| 736 |
|
|---|
| 737 | $(not val)
|
|---|
| 738 |
|
|---|
| 739 | Test if ``variable`` is defined, returning a ``kmk`` boolean value [1]_::
|
|---|
| 740 |
|
|---|
| 741 | $(defined variable)
|
|---|
| 742 |
|
|---|
| 743 | Test if ``set-a`` and ``set-b`` intersects, returning a ``kmk`` boolean
|
|---|
| 744 | value [1]_::
|
|---|
| 745 |
|
|---|
| 746 | $(intersects set-a, set-b)
|
|---|
| 747 |
|
|---|
| 748 | Same as ``$(if )`` execpt that the condition is a ``kmk``-expression [1]_::
|
|---|
| 749 |
|
|---|
| 750 | $(if-expr kmk-expression,true-part[,false-part])
|
|---|
| 751 |
|
|---|
| 752 | Select the first true condition (``kmk``-expression) and expand the
|
|---|
| 753 | following body. Special condition strings ``default`` and
|
|---|
| 754 | ``otherwise`` [1]_::
|
|---|
| 755 |
|
|---|
| 756 | $(select when1-cond, when1-body[, whenN-cond, whenN-body])
|
|---|
| 757 |
|
|---|
| 758 | Evalutate the ``kmk-expression`` returning what it evalues as. This is
|
|---|
| 759 | the preferred way of doing arithmentic now [1]_::
|
|---|
| 760 |
|
|---|
| 761 | $(expr kmk-expression)
|
|---|
| 762 |
|
|---|
| 763 |
|
|---|
| 764 | Stack Fuctions:
|
|---|
| 765 |
|
|---|
| 766 | Push ``item`` onto the ``stack-var``, returning the empty string [1]_::
|
|---|
| 767 |
|
|---|
| 768 | $(stack-push stack-var, item)
|
|---|
| 769 |
|
|---|
| 770 | Pop the top item off the ``stack-var`` [1]_::
|
|---|
| 771 |
|
|---|
| 772 | $(stack-pop stack-var)
|
|---|
| 773 |
|
|---|
| 774 | Pop the top item off the ``stack-var``, returning the empty string [1]_::
|
|---|
| 775 |
|
|---|
| 776 | $(stack-popv stack-var)
|
|---|
| 777 |
|
|---|
| 778 | Get the top item of the ``stack-var``, returning the empty string [1]_::
|
|---|
| 779 |
|
|---|
| 780 | $(stack-top stack-var)
|
|---|
| 781 |
|
|---|
| 782 |
|
|---|
| 783 | Advanced Functions:
|
|---|
| 784 |
|
|---|
| 785 | Evaluates to the contents of the variable ``var``, with no expansion
|
|---|
| 786 | performed on it::
|
|---|
| 787 |
|
|---|
| 788 | $(value var)
|
|---|
| 789 |
|
|---|
| 790 | Evaluate ``body`` with ``var`` bound to each word in ``words``, and
|
|---|
| 791 | concatenate the results (spaced)::
|
|---|
| 792 |
|
|---|
| 793 | $(foreach var,words,body)
|
|---|
| 794 |
|
|---|
| 795 | C-style for-loop. Start by evaluating ``init``. Each iteration will
|
|---|
| 796 | first check whether the ``condition`` (``kmk``-expression) is true,
|
|---|
| 797 | then expand ``body`` concatenating the result to the previous iterations
|
|---|
| 798 | (spaced), and finally evaluate ``next`` [1]_::
|
|---|
| 799 |
|
|---|
| 800 | $(for init,conditions,next,body)
|
|---|
| 801 |
|
|---|
| 802 | C-style while-loop. Each iteration will check whether the ``condition``
|
|---|
| 803 | (``kmk``-expression) is true, then expand ``body`` concatenating the
|
|---|
| 804 | result to the previous iterations [1]_::
|
|---|
| 805 |
|
|---|
| 806 | $(while conditions,body)
|
|---|
| 807 |
|
|---|
| 808 | Evaluate the variable ``var`` replacing any references to ``$(1)``,
|
|---|
| 809 | ``$(2)`` with the first, second, etc. ``param`` values::
|
|---|
| 810 |
|
|---|
| 811 | $(call var,param,...)
|
|---|
| 812 |
|
|---|
| 813 | Evaluate ``text`` then read the results as makefile commands. Expands
|
|---|
| 814 | to the empty string::
|
|---|
| 815 |
|
|---|
| 816 | $(eval text)
|
|---|
| 817 |
|
|---|
| 818 | Same as ``$(eval text)`` except that the ``text`` is expanded in its
|
|---|
| 819 | own variable context [1]_::
|
|---|
| 820 |
|
|---|
| 821 | $(evalctx text)
|
|---|
| 822 |
|
|---|
| 823 | Same as ``$(eval $(value var))`` [1]_::
|
|---|
| 824 |
|
|---|
| 825 | $(evalval var)
|
|---|
| 826 |
|
|---|
| 827 | Same as ``$(evalctx $(value var))`` [1]_::
|
|---|
| 828 |
|
|---|
| 829 | $(evalvalctx var)
|
|---|
| 830 |
|
|---|
| 831 | A combination of ``$(eval )``, ``$(call )`` and ``$(value )`` [1]_::
|
|---|
| 832 |
|
|---|
| 833 | $(evalcall var)
|
|---|
| 834 |
|
|---|
| 835 | A combination of ``$(eval )`` and ``$(call )`` [1]_::
|
|---|
| 836 |
|
|---|
| 837 | $(evalcall2 var)
|
|---|
| 838 |
|
|---|
| 839 | Remove comments and blank lines from the variable ``var``. Expands to
|
|---|
| 840 | the empty string [1]_::
|
|---|
| 841 |
|
|---|
| 842 | $(eval-opt-var var)
|
|---|
| 843 |
|
|---|
| 844 | Returns accessing ``$<`` of ``target``, either retriving the whole thing
|
|---|
| 845 | or the file at ``pos`` (one-origin) [1]_::
|
|---|
| 846 |
|
|---|
| 847 | $(deps target[, pos])
|
|---|
| 848 |
|
|---|
| 849 | Returns accessing ``$+`` (order + duplicates) of ``target``, either
|
|---|
| 850 | retriving the whole thing or the file at ``pos`` (one-origin) [1]_::
|
|---|
| 851 |
|
|---|
| 852 | $(deps-all target[, pos])
|
|---|
| 853 |
|
|---|
| 854 | Returns accessing ``$?`` of ``target``, either retriving the whole
|
|---|
| 855 | thing or the file at ``pos`` (one-origin) [1]_::
|
|---|
| 856 |
|
|---|
| 857 | $(deps-newer target[, pos])
|
|---|
| 858 |
|
|---|
| 859 | Returns accessing ``$|`` (order only) of ``target``, either retriving the
|
|---|
| 860 | whole thing or the file at ``pos`` (one-origin) [1]_::
|
|---|
| 861 |
|
|---|
| 862 | $(deps-oo target[, pos])
|
|---|
| 863 |
|
|---|
| 864 |
|
|---|
| 865 | Command Functions:
|
|---|
| 866 |
|
|---|
| 867 | Create one or more command lines avoiding the max argument
|
|---|
| 868 | length restriction of the host OS [1]_::
|
|---|
| 869 |
|
|---|
| 870 | $(xargs ar cas mylib.a,$(objects))
|
|---|
| 871 | $(xargs ar cas mylib.a,ar as mylib.a,$(objects))
|
|---|
| 872 |
|
|---|
| 873 |
|
|---|
| 874 | Returns the commands for the specified target separated by new-line, space,
|
|---|
| 875 | or a user defined string. Note that this might not produce the 100% correct
|
|---|
| 876 | result if any of the prerequisite automatic variables are used [1]_::
|
|---|
| 877 |
|
|---|
| 878 | $(commands target)
|
|---|
| 879 | $(commands-sc target)
|
|---|
| 880 | $(commands-usr target,sep)
|
|---|
| 881 |
|
|---|
| 882 | Compares two commands returning the empty string if equal and the 3rd
|
|---|
| 883 | argument if not. This differs from ``$(comp-vars v1,v2,ne)`` in that
|
|---|
| 884 | line by line is stripped of leading spaces, command prefixes and
|
|---|
| 885 | trailing spaces before comparing [1]_::
|
|---|
| 886 |
|
|---|
| 887 | $(comp-cmds cmds-var1, cmds-var2, ne)
|
|---|
| 888 | $(comp-cmds-ex cmds1, cmd2, ne)
|
|---|
| 889 |
|
|---|
| 890 |
|
|---|
| 891 | Compares the values of the two variables returning the empty string if
|
|---|
| 892 | equal and the 3rd argument if not. Leading and trailing spaces is
|
|---|
| 893 | ignored [1]_::
|
|---|
| 894 |
|
|---|
| 895 | $(comp-var var1, var2, ne)
|
|---|
| 896 |
|
|---|
| 897 |
|
|---|
| 898 | Utility functions:
|
|---|
| 899 |
|
|---|
| 900 | When this function is evaluated, ``kmk`` generates a fatal error with the
|
|---|
| 901 | message ``text``::
|
|---|
| 902 |
|
|---|
| 903 | $(error text...)
|
|---|
| 904 |
|
|---|
| 905 | When this function is evaluated, ``kmk`` generates a warning with the
|
|---|
| 906 | message ``text``::
|
|---|
| 907 |
|
|---|
| 908 | $(warning text...)
|
|---|
| 909 |
|
|---|
| 910 | When this function is evaluated, ``kmk`` generates a info with the
|
|---|
| 911 | message ``text``::
|
|---|
| 912 |
|
|---|
| 913 | $(info text...)
|
|---|
| 914 |
|
|---|
| 915 | Execute a shell ``command`` and return its output::
|
|---|
| 916 |
|
|---|
| 917 | $(shell command)
|
|---|
| 918 |
|
|---|
| 919 | Return a string describing how the ``kmk`` variable ``variable`` was defined::
|
|---|
| 920 |
|
|---|
| 921 | $(origin variable)
|
|---|
| 922 |
|
|---|
| 923 | Return a string describing the flavor of the ``kmk`` variable ``variable``::
|
|---|
| 924 |
|
|---|
| 925 | $(flavor variable)
|
|---|
| 926 |
|
|---|
| 927 | Returns the current local time and date formatted in the ``strftime``
|
|---|
| 928 | style specifier ``fmt``. ``fmt`` defaults to ``%Y-%m-%dT%H:%M:%S`` when
|
|---|
| 929 | not specified [1]_::
|
|---|
| 930 |
|
|---|
| 931 | $(date fmt)
|
|---|
| 932 |
|
|---|
| 933 | Returns the current UTC time and date formatted in the ``strftime``
|
|---|
| 934 | style specifier ``fmt``. ``fmt`` defaults to ``%Y-%m-%dT%H:%M:%SZ`` when
|
|---|
| 935 | not specified [1]_::
|
|---|
| 936 |
|
|---|
| 937 | $(date-utc fmt)
|
|---|
| 938 |
|
|---|
| 939 | Reformats the ``in`` time and date using ``fmt``. The ``in-fmt`` defaults
|
|---|
| 940 | to ``fmt`` if not specified. While ``fmt`` defaults to
|
|---|
| 941 | ``%Y-%m-%dT%H:%M:%SZ`` if not specified [1]_::
|
|---|
| 942 |
|
|---|
| 943 | $(date-utc fmt,time,in-fmt)
|
|---|
| 944 |
|
|---|
| 945 | Returns the current nanosecond timestamp (monotonic when possible) [1]_::
|
|---|
| 946 |
|
|---|
| 947 | $(nanots )
|
|---|
| 948 |
|
|---|
| 949 | Returns the size of the specified file, or -1 if the size could not
|
|---|
| 950 | be obtained. This can be used to check if a file exist or not [1]_::
|
|---|
| 951 |
|
|---|
| 952 | $(file-size file)
|
|---|
| 953 |
|
|---|
| 954 | Searches the ``PATH`` ``kmk`` variable for the specified ``files`` [1]_::
|
|---|
| 955 |
|
|---|
| 956 | $(which files...)
|
|---|
| 957 |
|
|---|
| 958 | OS/2: Returns the specified LIBPATH variable value [1]_::
|
|---|
| 959 |
|
|---|
| 960 | $(libpath var)
|
|---|
| 961 |
|
|---|
| 962 | OS/2: Sets the specified LIBPATH variable value, returning the empty
|
|---|
| 963 | string [1]_::
|
|---|
| 964 |
|
|---|
| 965 | $(libpath var,value)
|
|---|
| 966 |
|
|---|
| 967 |
|
|---|
| 968 | Debugging Functions:
|
|---|
| 969 |
|
|---|
| 970 | Returns various make statistics, if no item is specified a default
|
|---|
| 971 | selection is returned [1]_::
|
|---|
| 972 |
|
|---|
| 973 | $(make-stats item[,itemN])
|
|---|
| 974 |
|
|---|
| 975 | Raise a debug breakpoint. Used for debugging ``kmk`` makefile
|
|---|
| 976 | parsing [1]_::
|
|---|
| 977 |
|
|---|
| 978 | $(breakpoint )
|
|---|
| 979 |
|
|---|
| 980 |
|
|---|
| 981 | Recipes
|
|---|
| 982 | -------
|
|---|
| 983 |
|
|---|
| 984 | A typical recipe takes one of the two following forms::
|
|---|
| 985 |
|
|---|
| 986 | targets : normal-prerequisites | order-only-prerequisites
|
|---|
| 987 | command
|
|---|
| 988 | ...
|
|---|
| 989 |
|
|---|
| 990 | targets : normal-prerequisites | order-only-prerequisites ; command
|
|---|
| 991 | command
|
|---|
| 992 | ...
|
|---|
| 993 |
|
|---|
| 994 | Specifying more than one file in the ``targets`` lists is the same as
|
|---|
| 995 | repeating the recipe for each of the files.
|
|---|
| 996 |
|
|---|
| 997 | Use ``+`` and ``+|`` in the list of ``targets`` to tell ``kmk`` that the
|
|---|
| 998 | recipe has more than one output. [1]_ The files after a ``+`` will
|
|---|
| 999 | always be remade, while the files after a ``+|`` don't have to be remade.
|
|---|
| 1000 | The latter is frequently employed to update files which prerequisites
|
|---|
| 1001 | change wihtout the output files necessarily changing. See also
|
|---|
| 1002 | ``kmk_cp --changed``.
|
|---|
| 1003 |
|
|---|
| 1004 |
|
|---|
| 1005 | Double colon recipes
|
|---|
| 1006 |
|
|---|
| 1007 | Double colon recipes are written with ``::`` instead of ``:`` and are
|
|---|
| 1008 | handled differently from ordinary recipes if the target appears in more
|
|---|
| 1009 | than one recipe. First, all the recipes must be of the double colon type.
|
|---|
| 1010 | Second, the recipes are executed individually and may be omitted depending
|
|---|
| 1011 | on the state of their prerequisites. Double colon recipes without any
|
|---|
| 1012 | prerequisites will always be executed.
|
|---|
| 1013 |
|
|---|
| 1014 |
|
|---|
| 1015 | Pattern rules
|
|---|
| 1016 |
|
|---|
| 1017 | A couple of examples::
|
|---|
| 1018 |
|
|---|
| 1019 | %.o : %.c
|
|---|
| 1020 | gcc -o $@ $<
|
|---|
| 1021 | %.tab.c %.tab.h : %.y
|
|---|
| 1022 | bison -d $<
|
|---|
| 1023 |
|
|---|
| 1024 | The latter has two outputs.
|
|---|
| 1025 |
|
|---|
| 1026 |
|
|---|
| 1027 | -----
|
|---|
| 1028 |
|
|---|
| 1029 | .. [1] ``kmk`` only feature.
|
|---|
| 1030 | .. [2] Experimental GNU ``make`` feature that is not enabled by default.
|
|---|
| 1031 |
|
|---|
| 1032 | -----
|
|---|
| 1033 |
|
|---|
| 1034 | :Status: $Id: QuickReference-kmk.txt 2475 2011-07-16 20:08:07Z bird $
|
|---|
| 1035 | :Copyright: Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
|
|---|
| 1036 | 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
|
|---|
| 1037 | 2007 Free Software Foundation, Inc.
|
|---|
| 1038 |
|
|---|
| 1039 | Copyright (c) 2008-2009 knut st. osmundsen
|
|---|
