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24 lines
1002 B
24 lines
1002 B
# XCB_UTIL_M4_WITH_INCLUDE_PATH
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# ------------------------------
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#
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# This macro attempts to locate an m4 macro processor which supports
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# -I option and is only useful for modules relying on M4 in order to
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# expand macros in source code files.
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#
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# M4: variable holding the path to an usable m4 program.
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#
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# This macro requires Autoconf 2.62 or later as it is relying upon
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# AC_PATH_PROGS_FEATURE_CHECK macro. NOTE: As soon as the minimum
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# required version of Autoconf for Xorg is bumped to 2.62, this macro
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# is supposed to be shipped with xorg/util/macros.
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#
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AC_DEFUN([XCB_UTIL_M4_WITH_INCLUDE_PATH], [
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AC_CACHE_CHECK([for m4 that supports -I option], [ac_cv_path_M4],
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[AC_PATH_PROGS_FEATURE_CHECK([M4], [m4 gm4],
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[[$ac_path_M4 -I. /dev/null > /dev/null 2>&1 && \
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ac_cv_path_M4=$ac_path_M4 ac_path_M4_found=:]],
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[AC_MSG_ERROR([could not find m4 that supports -I option])],
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[$PATH:/usr/gnu/bin])])
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AC_SUBST([M4], [$ac_cv_path_M4])
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]) # XCB_UTIL_M4_WITH_INCLUDE_PATH
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