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37 lines
1.1 KiB
Text
37 lines
1.1 KiB
Text
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dnl as-scrub-include.m4 0.0.4
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dnl autostars m4 macro for scrubbing CFLAGS of system include dirs
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dnl because gcc 3.x complains about including system including dirs
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dnl Thomas Vander Stichele <thomas at apestaart dot org>
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dnl $Id: as-scrub-include.m4,v 1.5 2004/06/12 08:19:09 thomasvs Exp $
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dnl This macro uses output of cpp -v and expects it to contain text that
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dnl looks a little bit like this:
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dnl #include <...> search starts here:
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dnl /usr/local/include
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dnl /usr/lib/gcc-lib/i386-redhat-linux/3.2/include
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dnl /usr/include
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dnl End of search list.
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dnl AS_SCRUB_INCLUDE(VAR)
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dnl example
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dnl AS_SCRUB_INCLUDE(CFLAGS)
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dnl will remove all system include dirs from the given CFLAGS
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AC_DEFUN([AS_SCRUB_INCLUDE],
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[
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GIVEN_CFLAGS=$[$1]
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INCLUDE_DIRS=`echo | cpp -v 2>&1`
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dnl remove everything from this output between the "starts here" and "End of"
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dnl line
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INCLUDE_DIRS=`echo $INCLUDE_DIRS | sed -e 's/.*<...> search starts here://' | sed -e 's/End of search list.*//'`
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for dir in $INCLUDE_DIRS; do
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dnl use "" as the sed script so $dir gets expanded
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GIVEN_CFLAGS=`echo $GIVEN_CFLAGS | sed -e "s#-I$dir ##"`
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done
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[$1]=$GIVEN_CFLAGS
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])
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