faa6be3bd9
Use POSIX "=" instead of "==" which is not supported at least by FreeBSD /bin/sh. Closes #3515925. git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12971 626c5289-ae23-0410-ae9c-e8d60b6d4f22
40 lines
1.3 KiB
Text
40 lines
1.3 KiB
Text
dnl @synopsis AC_COMPARE_VERSION\
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dnl (version-a, version-b, action-if-greater, action-if-equal, action-if-less)
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dnl
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dnl This macro compares two version numbers and executes the indicated action
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dnl based on whether they're equal or one is greater than the other.
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dnl It's needed to determine whether ocaml is new enough that the incompatible
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dnl change 'loc' -> '_loc' is present in this version of camlp4.
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dnl
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dnl It's implemented from scratch just for SWIG by arty.
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dnl
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dnl @category Misc
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dnl @author arty
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dnl @version 2006-11-02
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dnl @license GPLWithACException
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AC_DEFUN([AC_COMPARE_VERSION], [
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# Split the version into units.
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ver_a="[$1]"
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ver_b="[$2]"
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nodots_a=`echo $ver_a | sed -e 's/\./ /g'`
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condition="equal"
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isolate_b_regex='\([[0-9]]\+\).*'
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for ver_part in $nodots_a ; do
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b_ver_part=`echo "$ver_b" | sed -e 's/'"$isolate_b_regex"'/\1/'`
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if test \( "$ver_part" -lt "$b_ver_part" \) -a \( "x$condition" = "xequal" \) ; then
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condition=less
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elif test \( "$ver_part" -gt "$b_ver_part" \) -a \( "x$condition" = "xequal" \) ; then
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condition=greater
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fi
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isolate_b_regex='[[0-9]]\+\.'"$isolate_b_regex"
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done
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if test "x$condition" = "xequal" ; then
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[$4]
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elif test "x$condition" = "xless" ; then
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[$3]
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elif test "x$condition" = "xgreater" ; then
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[$5]
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fi
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])
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