@ -4475,190 +4475,49 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C99" >&5
$as_echo_n "checking for $CC option to accept ISO C99... " >&6; }
if ${ac_cv_prog_cc_c99+:} false; then :
# Detect option needed for C11
# loosely modeled after code in later Autoconf versions
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C11" >&5
$as_echo_n "checking for $CC option to accept ISO C11... " >&6; }
if ${pgac_cv_prog_cc_c11+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_cv_prog_cc_c99=no
ac_save_CC=$CC
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
pgac_cv_prog_cc_c11=no
pgac_save_CC=$CC
for pgac_arg in '' '-std=gnu11' '-std=c11'; do
CC="$pgac_save_CC $pgac_arg"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <stdarg.h>
#include <stdbool.h>
#include <stdlib.h>
#include <wchar.h>
#include <stdio.h>
// Check varargs macros. These examples are taken from C99 6.10.3.5.
#define debug(...) fprintf (stderr, __VA_ARGS__)
#define showlist(...) puts (#__VA_ARGS__)
#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))
static void
test_varargs_macros (void)
{
int x = 1234;
int y = 5678;
debug ("Flag");
debug ("X = %d\n", x);
showlist (The first, second, and third items.);
report (x>y, "x is %d but y is %d", x, y);
}
// Check long long types.
#define BIG64 18446744073709551615ull
#define BIG32 4294967295ul
#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)
#if !BIG_OK
your preprocessor is broken;
#endif
#if BIG_OK
#else
your preprocessor is broken;
#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L
# error "Compiler does not advertise C11 conformance"
#endif
static long long int bignum = -9223372036854775807LL;
static unsigned long long int ubignum = BIG64;
struct incomplete_array
{
int datasize;
double data[];
};
struct named_init {
int number;
const wchar_t *name;
double average;
};
typedef const char *ccp;
static inline int
test_restrict (ccp restrict text)
{
// See if C++-style comments work.
// Iterate through items via the restricted pointer.
// Also check for declarations in for loops.
for (unsigned int i = 0; *(text+i) != '\0'; ++i)
continue;
return 0;
}
// Check varargs and va_copy.
static void
test_varargs (const char *format, ...)
{
va_list args;
va_start (args, format);
va_list args_copy;
va_copy (args_copy, args);
const char *str;
int number;
float fnumber;
while (*format)
{
switch (*format++)
{
case 's': // string
str = va_arg (args_copy, const char *);
break;
case 'd': // int
number = va_arg (args_copy, int);
break;
case 'f': // float
fnumber = va_arg (args_copy, double);
break;
default:
break;
}
}
va_end (args_copy);
va_end (args);
}
int
main ()
{
// Check bool.
_Bool success = false;
// Check restrict.
if (test_restrict ("String literal") == 0)
success = true;
char *restrict newvar = "Another string";
// Check varargs.
test_varargs ("s, d' f .", "string", 65, 34.234);
test_varargs_macros ();
// Check flexible array members.
struct incomplete_array *ia =
malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));
ia->datasize = 10;
for (int i = 0; i < ia->datasize; ++i)
ia->data[i] = i * 1.234;
// Check named initializers.
struct named_init ni = {
.number = 34,
.name = L"Test wide string",
.average = 543.34343,
};
ni.number = 58;
int dynamic_array[ni.number];
dynamic_array[ni.number - 1] = 543;
// work around unused variable warnings
return (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == 'x'
|| dynamic_array[ni.number - 1] != 543);
;
return 0;
}
_ACEOF
for ac_arg in '' -std=gnu99 -std=c99 -c99 -AC99 -D_STDC_C99= -qlanglvl=extc99
do
CC="$ac_save_CC $ac_arg"
if ac_fn_c_try_compile "$LINENO"; then :
ac_cv_prog_cc_c99=$ac_arg
if ac_fn_c_try_compile "$LINENO"; then :
pgac_cv_prog_cc_c11=$pgac_arg
fi
rm -f core conftest.err conftest.$ac_objext
test "x$ac_cv_prog_cc_c99" != "x no" && break
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
test x"$pgac_cv_prog_cc_c11" != x"no" && break
done
rm -f conftest.$ac_ext
CC=$ac_save_CC
fi
# AC_CACHE_VAL
case "x$ac_cv_prog_cc_c99" in
x)
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
$as_echo "none needed" >&6; } ;;
xno)
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
$as_echo "unsupported" >&6; } ;;
*)
CC="$CC $ac_cv_prog_cc_c99"
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
$as_echo "$ac_cv_prog_cc_c99" >&6; } ;;
esac
if test "x$ac_cv_prog_cc_c99" != xno; then :
CC=$pgac_save_CC
fi
# Error out if the compiler does not support C99, as the codebase
# relies on that.
if test "$ac_cv_prog_cc_c99" = no; then
as_fn_error $? "C compiler \"$CC\" does not support C99" "$LINENO" 5
if test x"$pgac_cv_prog_cc_c11" = x"no"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
$as_echo "unsupported" >&6; }
as_fn_error $? "C compiler \"$CC\" does not support C11" "$LINENO" 5
elif test x"$pgac_cv_prog_cc_c11" = x""; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
$as_echo "none needed" >&6; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_prog_cc_c11" >&5
$as_echo "$pgac_cv_prog_cc_c11" >&6; }
CC="$CC $pgac_cv_prog_cc_c11"
fi
ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@ -4920,7 +4779,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
# Check if it's Intel's compiler, which (usually) pretends to be gcc,
# but has idiosyncrasies of its own. We assume icc will define
# __INTEL_COMPILER regardless of CFLAGS.
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
Peter Eisentraut
3 weeks ago