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4ea2991a40
It was originally added to make bisecting easier, but has outlived its usefuleness now. Going forward we'll have just a single cairo-version.h header file, the one with the real version numbers. This is needed to fix the case where cairo is being built as a Meson subproject, but also simplifies things in general. Fixes #421
55 lines
1.6 KiB
Text
55 lines
1.6 KiB
Text
dnl -*- mode: autoconf -*-
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dnl [m4_newline] didn't appear until autoconf 2.62
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m4_ifdef([m4_newline],,[m4_define([m4_newline],[
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])])
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dnl These are not available in autoconf 2.59
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m4_ifdef([m4_foreach_w],,[m4_define([m4_foreach_w],
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[m4_foreach([$1], m4_split(m4_normalize([$2]), [ ]), [$3])])])
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m4_ifdef([AS_CASE],,[
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m4_define([_AS_CASE],
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[m4_if([$#], 0, [m4_fatal([$0: too few arguments: $#])],
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[$#], 1, [ *) $1 ;;],
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[$#], 2, [ $1) m4_default([$2], [:]) ;;],
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[ $1) m4_default([$2], [:]) ;;
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$0(m4_shift2($@))])dnl
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])
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m4_defun([AS_CASE],
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[m4_ifval([$2$3],
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[case $1 in
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_AS_CASE(m4_shift($@))
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esac
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])dnl
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])# AS_CASE
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])
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m4_ifdef([m4_shift2],, [m4_define([m4_shift2], [m4_shift(m4_shift($@))])])
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dnl ==========================================================================
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dnl This has to be in acinclude.m4 as it includes other files
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dnl Parse Version.mk and declare m4 variables out of it
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m4_define([CAIRO_PARSE_VERSION],dnl
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m4_translit(dnl
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m4_bpatsubst(m4_include(src/cairo-version.h),
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[^.define \([a-zA-Z0-9_]*\) *\([0-9][0-9]*\)],
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[[m4_define(\1, \2)]]),
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[A-Z], [a-z])dnl
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)dnl
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dnl ==========================================================================
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m4_pattern_forbid([^cr_])
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dnl AC_AUTOCONF_VERSION was introduced in 2.62, so its definition works as
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dnl a conditional on version >= 2.62. Older versions did not call
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dnl m4_pattern_allow from AC_DEFINE and friends. To avoid lots of warnings we
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dnl only forbid CAIRO_ if autoconf is recent enough.
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m4_ifdef([AC_AUTOCONF_VERSION],
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[m4_pattern_forbid([CAIRO])],
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[m4_pattern_forbid([_CAIRO])])
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