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66e7a4d523
(NCN_STRICT_CHECK_TOOL): If program is not found and
value-if-not-found is empty, use ${ncn_tool_prefix}$2 or $2,
depending on whether build != host or not.
(NCN_STRICT_CHECK_TARGET_TOOL): Ditto, with the target prefix.
82 lines
2.4 KiB
Plaintext
82 lines
2.4 KiB
Plaintext
# Autoconf M4 include file defining utility macros for complex Canadian
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# cross builds.
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####
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# _NCN_TOOL_PREFIXES: Some stuff that oughtta be done in AC_CANONICAL_SYSTEM
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# or AC_INIT.
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# These demand that AC_CANONICAL_SYSTEM be called beforehand.
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AC_DEFUN([_NCN_TOOL_PREFIXES],
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[ncn_tool_prefix=
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test -n "$host_alias" && ncn_tool_prefix=$host_alias-
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ncn_target_tool_prefix=
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test -n "$target_alias" && ncn_target_tool_prefix=$target_alias-
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]) []dnl # _NCN_TOOL_PREFIXES
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####
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# NCN_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
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# Like AC_CHECK_TOOL, but tries a prefix of the target, not the host.
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# Code is pretty much lifted from autoconf2.53.
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AC_DEFUN([NCN_CHECK_TARGET_TOOL],
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[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
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if test -n "$ncn_target_tool_prefix"; then
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AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2],
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[${ncn_target_tool_prefix}$2], , [$4])
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fi
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if test -z "$ac_cv_prog_$1" ; then
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ncn_cv_$1=$$1
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AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [$3], [$4])
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$1=$ncn_cv_$1
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else
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$1="$ac_cv_prog_$1"
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fi
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]) []dnl # NCN_CHECK_TARGET_TOOL
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####
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# NCN_STRICT_CHECK_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
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# Like AC_CHECK_TOOL, but requires the prefix if build!=host.
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AC_DEFUN([NCN_STRICT_CHECK_TOOL],
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[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
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if test -n "$ncn_tool_prefix"; then
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AC_CHECK_PROG([$1], [${ncn_tool_prefix}$2],
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[${ncn_tool_prefix}$2], , [$4])
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fi
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if test -z "$ac_cv_prog_$1" ; then
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if test $build = $host ; then
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ncn_cv_$1=$$1
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AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4])
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$1=$ncn_cv_$1
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else
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$1="ifelse([$3],[],[${ncn_tool_prefix}$2],[$3])"
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fi
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else
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$1="$ac_cv_prog_$1"
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fi
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]) []dnl # NCN_STRICT_CHECK_TOOL
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####
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# NCN_STRICT_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
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# Like NCN_CHECK_TARGET_TOOL, but requires the prefix if build!=target.
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AC_DEFUN([NCN_STRICT_CHECK_TARGET_TOOL],
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[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
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if test -n "$ncn_target_tool_prefix"; then
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AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2],
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[${ncn_target_tool_prefix}$2], , [$4])
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fi
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if test -z "$ac_cv_prog_$1" ; then
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if test $build = $target ; then
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ncn_cv_$1=$$1
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AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4])
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$1=$ncn_cv_$1
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else
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$1="ifelse([$3],[],[${ncn_target_tool_prefix}$2],[$3])"
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fi
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else
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$1="$ac_cv_prog_$1"
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fi
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]) []dnl # NCN_STRICT_CHECK_TARGET_TOOL
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