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567be443a2
By introducing $(top_srcdir)/cairo-version.h I tried to make it unnecessary to rebuild the entire library when the version changes. That comes handy around releases and when bisecting. However this was not working as the version info was also ending up in config.h and hence forcing a full rebuild upon change. I now undefine the PACKAGE_VERSION* macros that autoconf defines, so config.h does not change when cairo-version.h changes.
50 lines
1.9 KiB
Text
50 lines
1.9 KiB
Text
dnl
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dnl Version stuff
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dnl
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dnl This macro expands to one of 'git', 'snapshot', or 'release'
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m4_define([cairo_release_status],
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[m4_if(m4_eval(cairo_version_micro % 2), [1], [git],
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[m4_if(m4_eval(cairo_version_minor % 2), [1], [snapshot],
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[release])])])
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dnl This is the .so/dll number. 2 for cairo-1.x.x
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m4_define([cairo_version_sonum], m4_eval(cairo_version_major + 1))
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dnl The libtool shared library version stuff
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m4_define([cairo_version],
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m4_eval(cairo_version_major*10000 + cairo_version_minor*100 + cairo_version_micro))
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m4_if(m4_eval(cairo_version_minor % 2), [1],
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[
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dnl for unstable releases
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m4_define([cairo_libtool_revision], 0)
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],
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[
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dnl for stable releases
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m4_define([cairo_libtool_revision], cairo_version_micro)
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])
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m4_define([cairo_libtool_current],
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m4_eval(cairo_version_sonum + cairo_version - cairo_libtool_revision))
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m4_define([cairo_libtool_age],
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m4_eval(cairo_libtool_current - cairo_version_sonum))
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CAIRO_VERSION_MAJOR=cairo_version_major
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CAIRO_VERSION_MINOR=cairo_version_minor
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CAIRO_VERSION_MICRO=cairo_version_micro
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CAIRO_VERSION_SONUM=cairo_version_sonum
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CAIRO_RELEASE_STATUS=cairo_release_status
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CAIRO_LIBTOOL_VERSION_INFO=cairo_libtool_current:cairo_libtool_revision:cairo_libtool_age
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AC_SUBST(CAIRO_VERSION_MAJOR)
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AC_SUBST(CAIRO_VERSION_MINOR)
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AC_SUBST(CAIRO_VERSION_MICRO)
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AC_SUBST(CAIRO_VERSION_SONUM)
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AC_SUBST(CAIRO_RELEASE_STATUS)
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AC_SUBST(CAIRO_LIBTOOL_VERSION_INFO)
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dnl Disable autoconf's version macros. We try hard to not rebuild the entire
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dnl library just because version changed. The PACKAGE_VERSION* stuff in
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dnl config.h is negating all the effort.
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AC_DEFINE(PACKAGE_VERSION, [USE_cairo_version_OR_cairo_version_string_INSTEAD])
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AC_DEFINE(PACKAGE_STRING, [USE_cairo_version_OR_cairo_version_string_INSTEAD])
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AC_DEFINE(PACKAGE_NAME, [USE_cairo_INSTEAD])
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AC_DEFINE(PACKAGE_TARNAME, [USE_cairo_INSTEAD])
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