Commit 612ddbfa authored by Uwe Schulzweida's avatar Uwe Schulzweida
Browse files

added autoconf macro AC_C_RESTRICT

parent ea7291dc
......@@ -12354,6 +12354,52 @@ fi
 
 
 
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C/C++ restrict keyword" >&5
$as_echo_n "checking for C/C++ restrict keyword... " >&6; }
if ${ac_cv_c_restrict+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_cv_c_restrict=no
# The order here caters to the fact that C++ does not require restrict.
for ac_kw in __restrict __restrict__ _Restrict restrict; do
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
typedef int * int_ptr;
int foo (int_ptr $ac_kw ip) {
return ip[0];
}
int
main ()
{
int s[1];
int * $ac_kw t = s;
t[0] = 0;
return foo(t)
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
ac_cv_c_restrict=$ac_kw
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
test "$ac_cv_c_restrict" != no && break
done
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_restrict" >&5
$as_echo "$ac_cv_c_restrict" >&6; }
case $ac_cv_c_restrict in
restrict) ;;
no) $as_echo "#define restrict /**/" >>confdefs.h
;;
*) cat >>confdefs.h <<_ACEOF
#define restrict $ac_cv_c_restrict
_ACEOF
;;
esac
ac_ext=${ac_fc_srcext-f}
ac_compile='$FC -c $FCFLAGS $ac_fcflags_srcext conftest.$ac_ext >&5'
ac_link='$FC -o conftest$ac_exeext $FCFLAGS $LDFLAGS $ac_fcflags_srcext conftest.$ac_ext $LIBS >&5'
......
......@@ -27,6 +27,7 @@ LT_INIT([pic-only])
AC_CHECK_TOOL([CC],[gcc],[:])
AC_PROG_CC_C99
AM_PROG_CC_C_O
AC_C_RESTRICT
AC_PROG_FC
AS_IF([test -n "$FC" && test "X$FC" != "Xno"],
[AC_FC_SRCEXT([f90])
......
......@@ -260,3 +260,17 @@
/* Defined to return type of backtrace(). */
#undef backtrace_size_t
/* Define to the equivalent of the C99 'restrict' keyword, or to
nothing if this is not supported. Do not define if restrict is
supported directly. */
#undef restrict
/* Work around a bug in Sun C++: it does not support _Restrict or
__restrict__, even though the corresponding Sun C compiler ends up with
"#define restrict _Restrict" or "#define restrict __restrict__" in the
previous line. Perhaps some future version of Sun C++ will work with
restrict; if so, hopefully it defines __RESTRICT like Sun C does. */
#if defined __SUNPRO_CC && !defined __RESTRICT
# define _Restrict
# define __restrict__
#endif
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