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Simplify strchrnul() compat code

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strchrnul() was introduced in glibc in April 1999 and included in
glibc-2.1. Checking for that version means the majority of all git
users would get to use the optimized version in glibc. Of the
remaining few some might get to use a slightly slower version
than necessary but probably not slower than what we have today.

Unfortunately, __GLIBC_PREREQ() macro was not available in glibc 2.1.1
which was short lived but already supported strchrnul().  Odd minority
users of that library needs to live with our compatibility inline version.

Rediffed-against-next-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Andreas Ericsson 2007-11-10 12:55:48 +01:00 committed by Junio C Hamano
parent b9c6232138
commit 9e79f00f06
3 changed files with 7 additions and 23 deletions
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13
Makefile
View File

@ -30,8 +30,6 @@ all::
#
# Define NO_MEMMEM if you don't have memmem.
#
# Define NO_STRCHRNUL if you don't have strchrnul.
#
# Define NO_STRLCPY if you don't have strlcpy.
#
# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
@ -408,7 +406,6 @@ ifeq ($(uname_S),Darwin)
OLD_ICONV = UnfortunatelyYes
NO_STRLCPY = YesPlease
NO_MEMMEM = YesPlease
NO_STRCHRNUL = YesPlease
endif
ifeq ($(uname_S),SunOS)
NEEDS_SOCKET = YesPlease
@ -416,7 +413,6 @@ ifeq ($(uname_S),SunOS)
SHELL_PATH = /bin/bash
NO_STRCASESTR = YesPlease
NO_MEMMEM = YesPlease
NO_STRCHRNUL = YesPlease
NO_HSTRERROR = YesPlease
ifeq ($(uname_R),5.8)
NEEDS_LIBICONV = YesPlease
@ -442,7 +438,6 @@ ifeq ($(uname_O),Cygwin)
NO_D_INO_IN_DIRENT = YesPlease
NO_STRCASESTR = YesPlease
NO_MEMMEM = YesPlease
NO_STRCHRNUL = YesPlease
NO_SYMLINK_HEAD = YesPlease
NEEDS_LIBICONV = YesPlease
NO_FAST_WORKING_DIRECTORY = UnfortunatelyYes
@ -457,14 +452,12 @@ endif
ifeq ($(uname_S),FreeBSD)
NEEDS_LIBICONV = YesPlease
NO_MEMMEM = YesPlease
NO_STRCHRNUL = YesPlease
BASIC_CFLAGS += -I/usr/local/include
BASIC_LDFLAGS += -L/usr/local/lib
endif
ifeq ($(uname_S),OpenBSD)
NO_STRCASESTR = YesPlease
NO_MEMMEM = YesPlease
NO_STRCHRNUL = YesPlease
NEEDS_LIBICONV = YesPlease
BASIC_CFLAGS += -I/usr/local/include
BASIC_LDFLAGS += -L/usr/local/lib
@ -480,7 +473,6 @@ endif
ifeq ($(uname_S),AIX)
NO_STRCASESTR=YesPlease
NO_MEMMEM = YesPlease
NO_STRCHRNUL = YesPlease
NO_STRLCPY = YesPlease
NEEDS_LIBICONV=YesPlease
endif
@ -493,7 +485,6 @@ ifeq ($(uname_S),IRIX64)
NO_SETENV=YesPlease
NO_STRCASESTR=YesPlease
NO_MEMMEM = YesPlease
NO_STRCHRNUL = YesPlease
NO_STRLCPY = YesPlease
NO_SOCKADDR_STORAGE=YesPlease
SHELL_PATH=/usr/gnu/bin/bash
@ -704,10 +695,6 @@ ifdef NO_MEMMEM
COMPAT_CFLAGS += -DNO_MEMMEM
COMPAT_OBJS += compat/memmem.o
endif
ifdef NO_STRCHRNUL
COMPAT_CFLAGS += -DNO_STRCHRNUL
COMPAT_OBJS += compat/strchrnul.o
endif
ifdef THREADED_DELTA_SEARCH
BASIC_CFLAGS += -DTHREADED_DELTA_SEARCH

8
compat/strchrnul.c
View File

@ -1,8 +0,0 @@
#include "../git-compat-util.h"
char *gitstrchrnul(const char *s, int c)
{
while (*s && *s != c)
s++;
return (char *)s;
}

9
git-compat-util.h
View File

@ -183,9 +183,14 @@ void *gitmemmem(const void *haystack, size_t haystacklen,
const void *needle, size_t needlelen);
#endif
#ifdef NO_STRCHRNUL
#if !defined(__GLIBC_PREREQ) && !__GLIBC_PREREQ(2, 1)
#define strchrnul gitstrchrnul
char *gitstrchrnul(const char *s, int c);
static inline char *gitstrchrnul(const char *s, int c)
{
while (*s && *s != c)
s++;
return (char *)s;
}
#endif
extern void release_pack_memory(size_t, int);