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2015-03-31Fix bugs and otherwise improve ax_check_capsicum.m4.Lasse Collin1-52/+51
AU_ALIAS was removed because the new version is incompatible with the old version. It no longer checks for <sys/capability.h> separately. It's enough to test for it as part of AC_CHECK_DECL. The defines HAVE_CAPSICUM_SYS_CAPSICUM_H and HAVE_CAPSICUM_SYS_CAPABILITY_H were removed as unneeded. HAVE_SYS_CAPSICUM_H from AC_CHECK_HEADERS is enough. It no longer does a useless search for the Capsicum library if the header wasn't found. Fixed a bug in ACTION-IF-FOUND (the first argument). Specifying the argument omitted the default action but the given action wasn't used instead. AC_DEFINE([HAVE_CAPSICUM]) is now always called when Capsicum support is found. Previously it was part of the default ACTION-IF-FOUND which a custom action would override. Now the default action only prepends ${CAPSICUM_LIB} to LIBS. The documentation was updated. Since there as no serial number, "#serial 2" was added.
2015-03-31Add m4/ax_check_capsicum.m4 for detecting Capsicum support.Lasse Collin1-0/+86
The file was loaded from this web page: https://github.com/google/capsicum-test/blob/dev/autoconf/m4/ax_check_capsicum.m4 Thanks to Loganaden Velvindron for pointing it out for me.