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util: improve compiler guard

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Glibc 2.26 has dropped xlocale.h, but the functions needed (strtod_l()
and strdof_l()) can be found in stdlib.h.
Improve the detection method to allow newer builds to still make use of
the locale-setting.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102454
Cc: Laurent Carlier <lordheavym@gmail.com>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Laurent Carlier <lordheavym@gmail.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Eric Engestrom
2017-08-31 16:55:56 +00:00
committed by Eric Engestrom
parent 8514c5d078
commit 49b428470e
3 changed files with 43 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
configure.ac
View File

@@ -795,6 +795,27 @@ AC_CHECK_HEADER([sys/sysctl.h], [DEFINES="$DEFINES -DHAVE_SYS_SYSCTL_H"])
AC_CHECK_FUNC([strtof], [DEFINES="$DEFINES -DHAVE_STRTOF"])
AC_CHECK_FUNC([mkostemp], [DEFINES="$DEFINES -DHAVE_MKOSTEMP"])
AC_MSG_CHECKING([whether strtod has locale support])
AC_LINK_IFELSE([AC_LANG_SOURCE([[
#define _GNU_SOURCE
#include <stdlib.h>
#include <locale.h>
#ifdef HAVE_XLOCALE_H
#include <xlocale.h>
#endif
int main() {
locale_t loc = newlocale(LC_CTYPE_MASK, "C", NULL);
const char *s = "1.0";
char *end;
double d = strtod_l(s, end, loc);
float f = strtof_l(s, end, loc);
freelocale(loc);
return 0;
}]])],
[DEFINES="$DEFINES -DHAVE_STRTOD_L"];
AC_MSG_RESULT([yes]),
AC_MSG_RESULT([no]))
dnl Check to see if dlopen is in default libraries (like Solaris, which
dnl has it in libc), or if libdl is needed to get it.
AC_CHECK_FUNC([dlopen], [DEFINES="$DEFINES -DHAVE_DLOPEN"],

16
scons/gallium.py
View File

@@ -157,6 +157,19 @@ def check_header(env, header):
env = conf.Finish()
return have_header
def check_functions(env, functions):
'''Check if all of the functions exist'''
conf = SCons.Script.Configure(env)
have_functions = True
for function in functions:
if not conf.CheckFunc(function):
have_functions = False
env = conf.Finish()
return have_functions
def check_prog(env, prog):
"""Check whether this program exists."""
@@ -339,6 +352,9 @@ def generate(env):
if check_header(env, 'xlocale.h'):
cppdefines += ['HAVE_XLOCALE_H']
if check_functions(env, ['strtod_l', 'strtof_l']):
cppdefines += ['HAVE_STRTOD_L']
if platform == 'windows':
cppdefines += [
'WIN32',

12
src/util/strtod.c
View File

@@ -26,12 +26,12 @@
#include <stdlib.h>
#ifdef _GNU_SOURCE
#if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
#include <locale.h>
#ifdef HAVE_XLOCALE_H
#include <xlocale.h>
static locale_t loc;
#endif
static locale_t loc;
#endif
#include "strtod.h"
@@ -40,7 +40,7 @@ static locale_t loc;
void
_mesa_locale_init(void)
{
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
#if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
loc = newlocale(LC_CTYPE_MASK, "C", NULL);
#endif
}
@@ -48,7 +48,7 @@ _mesa_locale_init(void)
void
_mesa_locale_fini(void)
{
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
#if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
freelocale(loc);
#endif
}
@@ -60,7 +60,7 @@ _mesa_locale_fini(void)
double
_mesa_strtod(const char *s, char **end)
{
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
#if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
return strtod_l(s, end, loc);
#else
return strtod(s, end);
@@ -75,7 +75,7 @@ _mesa_strtod(const char *s, char **end)
float
_mesa_strtof(const char *s, char **end)
{
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
#if defined(_GNU_SOURCE) && defined(HAVE_STRTOD_L)
return strtof_l(s, end, loc);
#elif defined(HAVE_STRTOF)
return strtof(s, end);