| 1 | ###############################################################################
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| 2 | # makefrwd.mif :: Make Include -- Forwards GNU Make to other Make Utilities. #
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| 3 | ###############################################################################
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| 4 |
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| 5 | #
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| 6 | # A Linux build-environment where "make" would not work is like having
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| 7 | # a motorbike with an empty tank, flat tires and no wrench in site.
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| 8 | # Penguins like to "just make" using GNU Make, so let's forward it.
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| 9 | #
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| 10 | # This is done by defining 2 targets: 'all:' for when no targets are specified,
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| 11 | # and '%:' to forward one or more targets.
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| 12 | #
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| 13 | # Because GNU Make first looks for 'GNUmakefile', which only includes this
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| 14 | # forwarder, it will process this file before 'Makefile'.
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| 15 | # The Make Utility that we forward to will process 'Makefile'.
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| 16 | #
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| 17 | # Note that GNU Make processes the '%:' target-list sequentially.
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| 18 | # So for multiple targets specified on the cli, there is a difference
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| 19 | # whether make (and thus this front-end) or wmake directly (using Makefile)
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| 20 | # was used.
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| 21 | #
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| 22 | # With wmake the targets are all specified in the Makefile so dependencies
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| 23 | # are resolved. With GNU Make, each target is seperately forwarded to Makefile
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| 24 | # wmake, so no dependencies are resolved.
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| 25 | # This means that a 'make rebuild clean' behaves exactly like that,
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| 26 | # removing all just built targets, because the 'clean' is performed last.
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| 27 | # A 'wmake rebuild clean' will not run the last 'clean' because 'rebuild'
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| 28 | # runs it before doing the build, so 'clean' is considered up-to-date.
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| 29 | #
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| 30 |
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| 31 | #
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| 32 | # The Make Utility we want to forward to.
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| 33 | #
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| 34 | OTHER_MAKE=wmake
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| 35 |
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| 36 | #
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| 37 | # Braces need to be escaped on Linux.
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| 38 | #
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| 39 | ifeq "$(SHELL)" "/bin/sh"
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| 40 | LB = \(
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| 41 | RB = \)
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| 42 | LQ = \'
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| 43 | RQ = \'
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| 44 | LDQ = \"
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| 45 | RDQ = \"
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| 46 | else
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| 47 | LB = (
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| 48 | RB = )
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| 49 | LQ = '
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| 50 | RQ = '
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| 51 | LDQ = "
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| 52 | RDQ = "
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| 53 | endif
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| 54 |
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| 55 | #
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| 56 | # Show this message to indicate this front-end is active.
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| 57 | #
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| 58 | HEADER=GNU Make front-end invoked for $(LQ)$(OTHER_MAKE)$(RQ)
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| 59 |
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| 60 |
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| 61 |
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| 62 | #
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| 63 | # Forward to the other Make Utility.
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| 64 | # Note that the local target 'default:' is not passed so the
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| 65 | # first target in Makefile is used.
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| 66 | #
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| 67 | default:
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| 68 | @echo $(HEADER)
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| 69 | @$(OTHER_MAKE)
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| 70 |
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| 71 | #
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| 72 | # Forward any target to the other Make Utility.
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| 73 | # Note that this rule gets processed in sequence for every target
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| 74 | # specified on the cli.
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| 75 | #
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| 76 | %:
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| 77 | @echo $(HEADER) with target: $(LQ)$@$(RQ)
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| 78 | @$(OTHER_MAKE) -h $@
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