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m4_define([libcairo_pthread_setspecific_program],[dnl
#include <stdlib.h>
#include <pthread.h>
#include <stdio.h>
static pthread_once_t once_control = PTHREAD_ONCE_INIT;
static pthread_key_t key;
static void
make_key (void)
{
pthread_key_create (&key, NULL);
}
int
main (int argc, char **argv)
{
void *value = NULL;
if (pthread_once (&once_control, make_key) != 0)
{
value = NULL;
}
else
{
value = pthread_getspecific (key);
if (!value)
{
value = malloc (100);
pthread_setspecific (key, value);
}
}
printf ("%d, %p\n", argc, argv);
return 0;
}
}])
AC_DEFUN([CAIRO_CONFIGURE_TLS], [dnl
have_tls=no
AC_CACHE_VAL(ac_cv_tls, [
ac_cv_tls=none
keywords="__thread __declspec(thread)"
for kw in $keywords ; do
AC_TRY_COMPILE([
#if defined(__MINGW32__) && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
#error This MinGW version has broken __thread support
#endif
#ifdef __OpenBSD__
#error OpenBSD has broken __thread support
#endif
int $kw test;], [], [ac_cv_tls=$kw; break])
done
])
if test "$ac_cv_tls" != "none"; then
have_tls=yes
AC_DEFINE([CAIRO_HAS_TLS], 1, [Define to 1 if we have tls support])
AC_DEFINE_UNQUOTED([TLS], $ac_cv_tls, [The compiler supported TLS storage class])
fi
dnl Set the output variables for CAIRO_ENABLE.
use_tls="$have_tls"
tls_REQUIRES=""
])
AC_DEFUN([CAIRO_CHECK_PTHREAD_SETSPECIFIC],[dnl
CAIRO_CC_TRY_LINK_WITH_ENV_SILENT(
[CFLAGS="$CFLAGS $2";
LIBS="$LIBS $3"],
[$4],
[$1_CFLAGS="$2";
$1_LIBS="$3";
$5],
[$1_CFLAGS="";
$1_LIBS="";
$6])
])
AC_DEFUN([CAIRO_CONFIGURE_PTHREAD_SETSPECIFIC],[dnl
if test "x$PTHREAD_SETSPECIFIC_CFLAGS" = "x"; then
PTHREAD_SETSPECIFIC_CFLAGS="-D_REENTRANT"
fi
if test "x$PTHREAD_SETSPECIFIC_LIBS" = "x"; then
PTHREAD_SETSPECIFIC_LIBS="-lpthread"
fi
CAIRO_CHECK_PTHREAD_SETSPECIFIC(
[pthread_setspecific], [$PTHREAD_SETSPECIFIC_CFLAGS], [$PTHREAD_SETSPECIFIC_LIBS],
[libcairo_pthread_setspecific_program],
[have_pthread_setspecific=yes],
[have_pthread_setspecific=no])
PTHREAD_SETSPECIFIC_CFLAGS=
PTHREAD_SETSPECIFIC_LIBS=
dnl Tell autoconf about the results.
if test "x$have_pthread_setspecific" = "xyes"; then
AC_DEFINE([CAIRO_HAS_PTHREAD_SETSPECIFIC], 1,
[Define to 1 if we have pthread_setspecific support])
fi
dnl Set the output variables for CAIRO_ENABLE.
use_pthread_setspecific="$have_pthread_setspecific"
pthread_setspecific_REQUIRES=""
])
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