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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>
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@ -58,6 +58,7 @@ NO_INET_NTOP=@NO_INET_NTOP@
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NO_INET_PTON=@NO_INET_PTON@
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NO_ICONV=@NO_ICONV@
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OLD_ICONV=@OLD_ICONV@
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NO_REGEX=@NO_REGEX@
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NO_DEFLATE_BOUND=@NO_DEFLATE_BOUND@
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INLINE=@INLINE@
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SOCKLEN_T=@SOCKLEN_T@
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21
configure.ac
21
configure.ac
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@ -706,6 +706,27 @@ else
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fi
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AC_SUBST(NO_C99_FORMAT)
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#
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# Define NO_REGEX if you have no or inferior regex support in your C library.
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AC_CACHE_CHECK([whether the platform regex can handle null bytes],
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[ac_cv_c_excellent_regex], [
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AC_EGREP_CPP(yippeeyeswehaveit,
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AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
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#include <regex.h>
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],
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[#ifdef REG_STARTEND
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yippeeyeswehaveit
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#endif
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]),
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[ac_cv_c_excellent_regex=yes],
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[ac_cv_c_excellent_regex=yes])
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])
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if test $ac_cv_c_excellent_regex = yes; then
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NO_REGEX=
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else
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NO_REGEX=YesPlease
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fi
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AC_SUBST(NO_REGEX)
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#
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# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
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# when attempting to read from an fopen'ed directory.
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AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
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