| 1 | # Autoconf M4 include file defining utility macros for complex Canadian
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| 2 | # cross builds.
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| 3 |
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| 4 | ####
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| 5 | # _NCN_TOOL_PREFIXES: Some stuff that oughtta be done in AC_CANONICAL_SYSTEM
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| 6 | # or AC_INIT.
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| 7 | # These demand that AC_CANONICAL_SYSTEM be called beforehand.
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| 8 | AC_DEFUN([_NCN_TOOL_PREFIXES],
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| 9 | [ncn_tool_prefix=
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| 10 | test -n "$host_alias" && ncn_tool_prefix=$host_alias-
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| 11 | ncn_target_tool_prefix=
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| 12 | test -n "$target_alias" && ncn_target_tool_prefix=$target_alias-
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| 13 | ]) []dnl # _NCN_TOOL_PREFIXES
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| 14 |
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| 15 | ####
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| 16 | # NCN_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
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| 17 | # Like AC_CHECK_TOOL, but tries a prefix of the target, not the host.
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| 18 | # Code is pretty much lifted from autoconf2.53.
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| 19 |
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| 20 | AC_DEFUN([NCN_CHECK_TARGET_TOOL],
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| 21 | [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
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| 22 | if test -n "$ncn_target_tool_prefix"; then
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| 23 | AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2],
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| 24 | [${ncn_target_tool_prefix}$2], , [$4])
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| 25 | fi
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| 26 | if test -z "$ac_cv_prog_$1" ; then
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| 27 | ncn_cv_$1=$$1
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| 28 | AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [$3], [$4])
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| 29 | $1=$ncn_cv_$1
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| 30 | else
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| 31 | $1="$ac_cv_prog_$1"
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| 32 | fi
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| 33 | ]) []dnl # NCN_CHECK_TARGET_TOOL
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| 34 |
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| 35 |
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| 36 | ####
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| 37 | # NCN_STRICT_CHECK_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
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| 38 | # Like AC_CHECK_TOOL, but requires the prefix if build!=host.
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| 39 |
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| 40 | AC_DEFUN([NCN_STRICT_CHECK_TOOL],
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| 41 | [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
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| 42 | if test -n "$ncn_tool_prefix"; then
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| 43 | AC_CHECK_PROG([$1], [${ncn_tool_prefix}$2],
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| 44 | [${ncn_tool_prefix}$2], , [$4])
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| 45 | fi
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| 46 | if test -z "$ac_cv_prog_$1" ; then
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| 47 | if test $build = $host ; then
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| 48 | ncn_cv_$1=$$1
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| 49 | AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4])
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| 50 | $1=$ncn_cv_$1
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| 51 | else
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| 52 | $1="ifelse([$3],[],[${ncn_tool_prefix}$2],[$3])"
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| 53 | fi
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| 54 | else
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| 55 | $1="$ac_cv_prog_$1"
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| 56 | fi
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| 57 | ]) []dnl # NCN_STRICT_CHECK_TOOL
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| 58 |
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| 59 |
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| 60 | ####
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| 61 | # NCN_STRICT_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
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| 62 | # Like NCN_CHECK_TARGET_TOOL, but requires the prefix if build!=target.
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| 63 |
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| 64 | AC_DEFUN([NCN_STRICT_CHECK_TARGET_TOOL],
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| 65 | [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
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| 66 | if test -n "$ncn_target_tool_prefix"; then
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| 67 | AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2],
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| 68 | [${ncn_target_tool_prefix}$2], , [$4])
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| 69 | fi
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| 70 | if test -z "$ac_cv_prog_$1" ; then
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| 71 | if test $build = $target ; then
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| 72 | ncn_cv_$1=$$1
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| 73 | AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4])
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| 74 | $1=$ncn_cv_$1
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| 75 | else
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| 76 | $1="ifelse([$3],[],[${ncn_target_tool_prefix}$2],[$3])"
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| 77 | fi
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| 78 | else
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| 79 | $1="$ac_cv_prog_$1"
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| 80 | fi
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| 81 | ]) []dnl # NCN_STRICT_CHECK_TARGET_TOOL
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