* Re: [PATCH 5/5] autoconf: don't use platform regex if it lacks REG_STARTEND
@ 2010-08-17 12:50 j6t
2010-08-17 21:47 ` [PATCH 5/5 v2] " Jonathan Nieder
0 siblings, 1 reply; 4+ messages in thread
From: j6t @ 2010-08-17 12:50 UTC (permalink / raw)
To: Ævar Arnfjörð Bjarmason
Cc: git, Paolo Bonzini, Andreas Schwab, Jonathan Nieder,
Junio C Hamano, Frank Li, Marius Storm-Olsen, René Scharfe
Ævar Arnfjörð Bjarmason schrieb:
> +[#ifdef REG_STARTEND
> +yippeeyeswehaveit
> +#endif
> +]),
> + [ac_cv_c_excellent_regex=yes],
> + [ac_cv_c_excellent_regex=yes])
> +])
Do you have REG_STARTEND?
o Yes
o Yes
Choose wisely! :)
-- Hannes
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 5/5 v2] autoconf: don't use platform regex if it lacks REG_STARTEND
2010-08-17 12:50 [PATCH 5/5] autoconf: don't use platform regex if it lacks REG_STARTEND j6t
@ 2010-08-17 21:47 ` Jonathan Nieder
2010-08-18 8:49 ` Ævar Arnfjörð Bjarmason
0 siblings, 1 reply; 4+ messages in thread
From: Jonathan Nieder @ 2010-08-17 21:47 UTC (permalink / raw)
To: j6t
Cc: Ævar Arnfjörð Bjarmason, git, Paolo Bonzini,
Andreas Schwab, Junio C Hamano, Frank Li, Marius Storm-Olsen,
René Scharfe
If the platform regex cannot match null bytes, we might as well
use the glibc version instead.
Cc: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Tested-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
j6t@kdbg.org wrote:
> Ævar Arnfjörð Bjarmason schrieb:
>> +[#ifdef REG_STARTEND
>> +yippeeyeswehaveit
>> +#endif
>> +]),
>> + [ac_cv_c_excellent_regex=yes],
>> + [ac_cv_c_excellent_regex=yes])
>> +])
>
> Do you have REG_STARTEND?
>
> o Yes
> o Yes
>
> Choose wisely! :)
Good catch. Warning: I only tested the following with glibc.
Testing on platforms with missing or ancient regex support would
be very welcome.
config.mak.in | 1 +
configure.ac | 21 +++++++++++++++++++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/config.mak.in b/config.mak.in
index b4e65c3..67dbd3b 100644
--- a/config.mak.in
+++ b/config.mak.in
@@ -58,6 +58,7 @@ NO_INET_NTOP=@NO_INET_NTOP@
NO_INET_PTON=@NO_INET_PTON@
NO_ICONV=@NO_ICONV@
OLD_ICONV=@OLD_ICONV@
+NO_REGEX=@NO_REGEX@
NO_DEFLATE_BOUND=@NO_DEFLATE_BOUND@
INLINE=@INLINE@
SOCKLEN_T=@SOCKLEN_T@
diff --git a/configure.ac b/configure.ac
index 5601e8b..ed0561b 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=no])
+])
+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],
--
1.7.2.1.544.ga752d.dirty
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 5/5 v2] autoconf: don't use platform regex if it lacks REG_STARTEND
2010-08-17 21:47 ` [PATCH 5/5 v2] " Jonathan Nieder
@ 2010-08-18 8:49 ` Ævar Arnfjörð Bjarmason
0 siblings, 0 replies; 4+ messages in thread
From: Ævar Arnfjörð Bjarmason @ 2010-08-18 8:49 UTC (permalink / raw)
To: Jonathan Nieder
Cc: j6t, git, Paolo Bonzini, Andreas Schwab, Junio C Hamano, Frank Li,
Marius Storm-Olsen, René Scharfe
On Tue, Aug 17, 2010 at 21:47, Jonathan Nieder <jrnieder@gmail.com> wrote:
> Good catch. Warning: I only tested the following with glibc.
> Testing on platforms with missing or ancient regex support would
> be very welcome.
I tested it on Solaris (which I should have done in the first place),
there it sets NO_REGEX=YesPlease as expected as Solaris doesn't have
REG_STARTEND.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH/RFC v2 0/3] Update compat/regex
@ 2010-08-17 8:03 Jonathan Nieder
2010-08-17 9:24 ` [PATCH 5/5] autoconf: don't use platform regex if it lacks REG_STARTEND Ævar Arnfjörð Bjarmason
0 siblings, 1 reply; 4+ messages in thread
From: Jonathan Nieder @ 2010-08-17 8:03 UTC (permalink / raw)
To: Ævar Arnfjörð Bjarmason
Cc: git, Paolo Bonzini, Andreas Schwab, Junio C Hamano
Ævar Arnfjörð Bjarmason wrote:
> Ævar Arnfjörð Bjarmason (3):
> compat/regex: use the regex engine from gawk for compat
> compat/regex: get the gawk regex engine to compile within git
> t/t7008-grep-binary.sh: un-TODO a test that needs REG_STARTEND
For what it’s worth:
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Thanks. Here’s a patch to go on top. I am not sure what platforms
support REG_STARTEND, but we can always update the makefile as reports
come in.
-- 8< --
Subject: 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>
---
config.mak.in | 1 +
configure.ac | 21 +++++++++++++++++++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/config.mak.in b/config.mak.in
index b4e65c3..67dbd3b 100644
--- a/config.mak.in
+++ b/config.mak.in
@@ -58,6 +58,7 @@ NO_INET_NTOP=@NO_INET_NTOP@
NO_INET_PTON=@NO_INET_PTON@
NO_ICONV=@NO_ICONV@
OLD_ICONV=@OLD_ICONV@
+NO_REGEX=@NO_REGEX@
NO_DEFLATE_BOUND=@NO_DEFLATE_BOUND@
INLINE=@INLINE@
SOCKLEN_T=@SOCKLEN_T@
diff --git a/configure.ac b/configure.ac
index 5601e8b..71ac89f 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],
--
1.7.2.1.544.ga752d.dirty
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 5/5] autoconf: don't use platform regex if it lacks REG_STARTEND
2010-08-17 8:03 [PATCH/RFC v2 0/3] Update compat/regex Jonathan Nieder
@ 2010-08-17 9:24 ` Ævar Arnfjörð Bjarmason
0 siblings, 0 replies; 4+ messages in thread
From: Ævar Arnfjörð Bjarmason @ 2010-08-17 9:24 UTC (permalink / raw)
To: git
Cc: Paolo Bonzini, Andreas Schwab, Jonathan Nieder, Junio C Hamano,
Frank Li, Marius Storm-Olsen, Johannes Sixt,
Ævar Arnfjörð Bjarmason, René Scharfe
From: Jonathan Nieder <jrnieder@gmail.com>
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>
---
config.mak.in | 1 +
configure.ac | 21 +++++++++++++++++++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/config.mak.in b/config.mak.in
index b4e65c3..67dbd3b 100644
--- a/config.mak.in
+++ b/config.mak.in
@@ -58,6 +58,7 @@ NO_INET_NTOP=@NO_INET_NTOP@
NO_INET_PTON=@NO_INET_PTON@
NO_ICONV=@NO_ICONV@
OLD_ICONV=@OLD_ICONV@
+NO_REGEX=@NO_REGEX@
NO_DEFLATE_BOUND=@NO_DEFLATE_BOUND@
INLINE=@INLINE@
SOCKLEN_T=@SOCKLEN_T@
diff --git a/configure.ac b/configure.ac
index 5601e8b..71ac89f 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],
--
1.7.2.1.389.gc3d0b
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-08-18 8:49 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2010-08-17 12:50 [PATCH 5/5] autoconf: don't use platform regex if it lacks REG_STARTEND j6t
2010-08-17 21:47 ` [PATCH 5/5 v2] " Jonathan Nieder
2010-08-18 8:49 ` Ævar Arnfjörð Bjarmason
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2010-08-17 8:03 [PATCH/RFC v2 0/3] Update compat/regex Jonathan Nieder
2010-08-17 9:24 ` [PATCH 5/5] autoconf: don't use platform regex if it lacks REG_STARTEND Ævar Arnfjörð Bjarmason
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