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authorJonathan Nieder <jrnieder@gmail.com>2010-08-17 09:24:42 +0000
committerJunio C Hamano <gitster@pobox.com>2010-08-19 15:46:47 -0700
commita1e3b669faf7a157f31507213a098076ff1dad7e (patch)
tree2537c8e08db8ac60440d126329ef7b692e0dbf56 /configure.ac
parent7e36de5859afd77976b7583b2012c238b1ffbb7c (diff)
downloadgit-a1e3b669faf7a157f31507213a098076ff1dad7e.tar.gz
autoconf: don't use platform regex if it lacks REG_STARTEND
If the platform regex cannot match null bytes, we might as well use the glibc version instead. Cc: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Cc: René Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Tested-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac21
1 files changed, 21 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 5601e8bac9..71ac89fab3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -706,6 +706,27 @@ else
fi
AC_SUBST(NO_C99_FORMAT)
#
+# Define NO_REGEX if you have no or inferior regex support in your C library.
+AC_CACHE_CHECK([whether the platform regex can handle null bytes],
+ [ac_cv_c_excellent_regex], [
+AC_EGREP_CPP(yippeeyeswehaveit,
+ AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
+#include <regex.h>
+],
+[#ifdef REG_STARTEND
+yippeeyeswehaveit
+#endif
+]),
+ [ac_cv_c_excellent_regex=yes],
+ [ac_cv_c_excellent_regex=yes])
+])
+if test $ac_cv_c_excellent_regex = yes; then
+ NO_REGEX=
+else
+ NO_REGEX=YesPlease
+fi
+AC_SUBST(NO_REGEX)
+#
# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
# when attempting to read from an fopen'ed directory.
AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],