AC_DEFUN([CAIRO_BIGENDIAN],
[ case $host_os in
darwin*)
AH_VERBATIM([X_BYTE_ORDER],
[
/* Deal with multiple architecture compiles on Mac OS X */
])
;;
*)
AC_C_BIGENDIAN
AX_C_FLOAT_WORDS_BIGENDIAN
;;
esac
])
AC_DEFUN([CAIRO_CHECK_FUNCS_WITH_FLAGS],
[ _save_cflags="$CFLAGS"
_save_libs="$LIBS"
CFLAGS="$CFLAGS $2"
LIBS="$LIBS $3"
AC_CHECK_FUNCS($1, $4, $5)
CFLAGS="$_save_cflags"
LIBS="$_save_libs"
])
AC_DEFUN([CAIRO_CONFIG_COMMANDS],
[ AC_CONFIG_COMMANDS($1,
[
_config_file=$1
_tmp_file=cairoconf.tmp
AC_MSG_NOTICE([creating $_config_file])
{
$2
} >> "$_tmp_file" ||
AC_MSG_ERROR([failed to write to $_tmp_file])
if cmp -s "$_tmp_file" "$_config_file"; then
AC_MSG_NOTICE([$_config_file is unchanged])
rm -f "$_tmp_file"
else
mv "$_tmp_file" "$_config_file" ||
AC_MSG_ERROR([failed to update $_config_file])
fi
], $3)
])
AC_DEFUN([CAIRO_CC_TRY_FLAG],
[ AC_MSG_CHECKING([whether $CC supports $1])
_save_cflags="$CFLAGS"
CFLAGS="$CFLAGS -Werror $1"
AC_COMPILE_IFELSE([ ], [cairo_cc_flag=yes], [cairo_cc_flag=no])
CFLAGS="$_save_cflags"
if test "x$cairo_cc_flag" = "xyes"; then
ifelse([$2], , :, [$2])
else
ifelse([$3], , :, [$3])
fi
AC_MSG_RESULT([$cairo_cc_flag])
])
AC_DEFUN([CAIRO_CC_TRY_LINK_FLAG],
[ AC_MSG_CHECKING([whether $CC supports $1])
_save_cflags="$CFLAGS"
CFLAGS="$CFLAGS -Werror $1"
AC_LINK_IFELSE([int main(void){ return 0;} ],
[cairo_cc_flag=yes],
[cairo_cc_flag=no])
CFLAGS="$_save_cflags"
if test "x$cairo_cc_flag" = "xyes"; then
ifelse([$2], , :, [$2])
else
ifelse([$3], , :, [$3])
fi
AC_MSG_RESULT([$cairo_cc_flag])
])
AC_DEFUN([CAIRO_CHECK_NATIVE_ATOMIC_PRIMITIVES],
[ AC_CACHE_CHECK([for native atomic primitives], cairo_cv_atomic_primitives,
[
cairo_cv_atomic_primitives="none"
AC_TRY_LINK([
int atomic_add(int i) { return __sync_fetch_and_add (&i, 1); }
int atomic_cmpxchg(int i, int j, int k) { return __sync_val_compare_and_swap (&i, j, k); }
], [],
cairo_cv_atomic_primitives="Intel"
)
])
if test "x$cairo_cv_atomic_primitives" = xIntel; then
AC_DEFINE(HAVE_INTEL_ATOMIC_PRIMITIVES, 1,
[Enable if your compiler supports the Intel __sync_* atomic primitives])
fi
])
AC_DEFUN([CAIRO_CHECK_ATOMIC_OP_NEEDS_MEMORY_BARRIER],
[ AC_CACHE_CHECK([whether atomic ops require a memory barrier], cairo_cv_atomic_op_needs_memory_barrier,
[
case $host_cpu in
i?86) cairo_cv_atomic_op_needs_memory_barrier="no" ;;
x86_64) cairo_cv_atomic_op_needs_memory_barrier="no" ;;
arm*) cairo_cv_atomic_op_needs_memory_barrier="no" ;;
*) cairo_cv_atomic_op_needs_memory_barrier="yes" ;;
esac
])
if test "x$cairo_cv_atomic_op_needs_memory_barrier" = "xyes"; then
AC_DEFINE_UNQUOTED(ATOMIC_OP_NEEDS_MEMORY_BARRIER, 1,
[whether memory barriers are needed around atomic operations])
fi
])
AC_DEFUN([CAIRO_TEXT_WRAP], [m4_text_wrap([$1], [$2],, 78)])