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Commit 757228f3 authored by kazu's avatar kazu
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config/ 

	* no-executables.m4 (GCC_TRY_COMPILE_OR_LINK): New function.
	libstdc++-v3/

libstdc++/
	* acinclude.m4 (GLIBCXX_ENABLE_C99): Temporarily add
	-fno-exceptions to CXXFLAGS.  Use GCC_TRY_COMPILE_OR_LINK.
	Make the tests assign results to volatile variables.  Use -lm
	for link tests in GCC_TRY_COMPILE_OR_LINK.  Fall back to
	compile-only tests if -lm is not available.
	* configure: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@128982 138bc75d-0d04-0410-961f-82ee72b054a4
parent 07cc3a26
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Showing with 621 additions and 151 deletions
config/ChangeLog
View file @ 757228f3
2007-10-03 Richard Sandiford <richard@codesourcery.com>
* no-executables.m4 (GCC_TRY_COMPILE_OR_LINK): New function.
libstdc++-v3/
2007-10-03 Kazu Hirata <kazu@codesourcery.com>
Revert:
......
config/no-executables.m4
View file @ 757228f3
......@@ -59,3 +59,11 @@ fi)
m4_divert_pop()dnl
])# GCC_NO_EXECUTABLES
# Use the strongest available test out of AC_TRY_COMPILE and AC_TRY_LINK.
AC_DEFUN([GCC_TRY_COMPILE_OR_LINK],
[if test x$gcc_no_link = xyes; then
AC_TRY_COMPILE([$1], [$2], [$3], [$4])
else
AC_TRY_LINK([$1], [$2], [$3], [$4])
fi])
libstdc++-v3/ChangeLog
View file @ 757228f3
2007-10-03 Richard Sandiford <richard@codesourcery.com>
* acinclude.m4 (GLIBCXX_ENABLE_C99): Temporarily add
-fno-exceptions to CXXFLAGS. Use GCC_TRY_COMPILE_OR_LINK.
Make the tests assign results to volatile variables. Use -lm
for link tests in GCC_TRY_COMPILE_OR_LINK. Fall back to
compile-only tests if -lm is not available.
* configure: Regenerate.
2007-10-03 Paolo Carlini <pcarlini@suse.de>
PR libstdc++/33613
......
libstdc++-v3/acinclude.m4
View file @ 757228f3
......@@ -763,24 +763,45 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
# Use -fno-exceptions so that the C driver can link these tests without
# hitting undefined references to personality routines.
ac_save_CXXFLAGS="$CXXFLAGS"
ac_save_LIBS="$LIBS"
ac_save_gcc_no_link="$gcc_no_link"
if test x$gcc_no_link != xyes; then
# Use -fno-exceptions to that the C driver can link these tests without
# hitting undefined references to personality routines.
CXXFLAGS="$CXXFLAGS -fno-exceptions"
AC_CHECK_LIB(m, sin, [
LIBS="$LIBS -lm"
], [
# Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK
gcc_no_link=yes
])
fi
# Check for the existence of <math.h> functions used if C99 is enabled.
AC_MSG_CHECKING([for ISO C99 support in <math.h>])
AC_CACHE_VAL(ac_c99_math, [
AC_TRY_COMPILE([#include <math.h>],
[fpclassify(0.0);
isfinite(0.0);
isinf(0.0);
isnan(0.0);
isnormal(0.0);
signbit(0.0);
isgreater(0.0,0.0);
isgreaterequal(0.0,0.0);
isless(0.0,0.0);
islessequal(0.0,0.0);
islessgreater(0.0,0.0);
islessgreater(0.0,0.0);
isunordered(0.0,0.0);
],[ac_c99_math=yes], [ac_c99_math=no])
GCC_TRY_COMPILE_OR_LINK(
[#include <math.h>
volatile double d1, d2;
volatile int i;],
[i = fpclassify(d1);
i = isfinite(d1);
i = isinf(d1);
i = isnan(d1);
i = isnormal(d1);
i = signbit(d1);
i = isgreater(d1, d2);
i = isgreaterequal(d1, d2);
i = isless(d1, d2);
i = islessequal(d1, d2);
i = islessgreater(d1, d2);
i = islessgreater(d1, d2);
i = isunordered(d1, d2);
],[ac_c99_math=yes], [ac_c99_math=no])
])
AC_MSG_RESULT($ac_c99_math)
if test x"$ac_c99_math" = x"yes"; then
......@@ -798,47 +819,54 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
ac_c99_complex=no;
if test x"$ac_has_complex_h" = x"yes"; then
AC_MSG_CHECKING([for ISO C99 support in <complex.h>])
AC_TRY_COMPILE([#include <complex.h>],
[typedef __complex__ float float_type; float_type tmpf;
cabsf(tmpf);
cargf(tmpf);
ccosf(tmpf);
ccoshf(tmpf);
cexpf(tmpf);
clogf(tmpf);
csinf(tmpf);
csinhf(tmpf);
csqrtf(tmpf);
ctanf(tmpf);
ctanhf(tmpf);
cpowf(tmpf, tmpf);
typedef __complex__ double double_type; double_type tmpd;
cabs(tmpd);
carg(tmpd);
ccos(tmpd);
ccosh(tmpd);
cexp(tmpd);
clog(tmpd);
csin(tmpd);
csinh(tmpd);
csqrt(tmpd);
ctan(tmpd);
ctanh(tmpd);
cpow(tmpd, tmpd);
typedef __complex__ long double ld_type; ld_type tmpld;
cabsl(tmpld);
cargl(tmpld);
ccosl(tmpld);
ccoshl(tmpld);
cexpl(tmpld);
clogl(tmpld);
csinl(tmpld);
csinhl(tmpld);
csqrtl(tmpld);
ctanl(tmpld);
ctanhl(tmpld);
cpowl(tmpld, tmpld);
],[ac_c99_complex=yes], [ac_c99_complex=no])
GCC_TRY_COMPILE_OR_LINK(
[#include <complex.h>
typedef __complex__ float float_type;
typedef __complex__ double double_type;
typedef __complex__ long double ld_type;
volatile float_type tmpf;
volatile double_type tmpd;
volatile ld_type tmpld;
volatile float f;
volatile double d;
volatile long double ld;],
[f = cabsf(tmpf);
f = cargf(tmpf);
tmpf = ccosf(tmpf);
tmpf = ccoshf(tmpf);
tmpf = cexpf(tmpf);
tmpf = clogf(tmpf);
tmpf = csinf(tmpf);
tmpf = csinhf(tmpf);
tmpf = csqrtf(tmpf);
tmpf = ctanf(tmpf);
tmpf = ctanhf(tmpf);
tmpf = cpowf(tmpf, tmpf);
d = cabs(tmpd);
d = carg(tmpd);
tmpd = ccos(tmpd);
tmpd = ccosh(tmpd);
tmpd = cexp(tmpd);
tmpd = clog(tmpd);
tmpd = csin(tmpd);
tmpd = csinh(tmpd);
tmpd = csqrt(tmpd);
tmpd = ctan(tmpd);
tmpd = ctanh(tmpd);
tmpd = cpow(tmpd, tmpd);
ld = cabsl(tmpld);
ld = cargl(tmpld);
tmpld = ccosl(tmpld);
tmpld = ccoshl(tmpld);
tmpld = cexpl(tmpld);
tmpld = clogl(tmpld);
tmpld = csinl(tmpld);
tmpld = csinhl(tmpld);
tmpld = csqrtl(tmpld);
tmpld = ctanl(tmpld);
tmpld = ctanhl(tmpld);
tmpld = cpowl(tmpld, tmpld);
],[ac_c99_complex=yes], [ac_c99_complex=no])
fi
AC_MSG_RESULT($ac_c99_complex)
if test x"$ac_c99_complex" = x"yes"; then
......@@ -851,35 +879,43 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
# Check for the existence in <stdio.h> of vscanf, et. al.
AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
AC_CACHE_VAL(ac_c99_stdio, [
AC_TRY_COMPILE([#include <stdio.h>
#include <stdarg.h>
void foo(char* fmt, ...)
{
va_list args; va_start(args, fmt);
vfscanf(stderr, "%i", args);
vscanf("%i", args);
vsnprintf(fmt, 0, "%i", args);
vsscanf(fmt, "%i", args);
}],
[snprintf("12", 0, "%i");],
[ac_c99_stdio=yes], [ac_c99_stdio=no])
GCC_TRY_COMPILE_OR_LINK(
[#include <stdio.h>
#include <stdarg.h>
void foo(char* fmt, ...)
{
va_list args; va_start(args, fmt);
vfscanf(stderr, "%i", args);
vscanf("%i", args);
vsnprintf(fmt, 0, "%i", args);
vsscanf(fmt, "%i", args);
}],
[snprintf("12", 0, "%i");],
[ac_c99_stdio=yes], [ac_c99_stdio=no])
])
AC_MSG_RESULT($ac_c99_stdio)
# Check for the existence in <stdlib.h> of lldiv_t, et. al.
AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
AC_CACHE_VAL(ac_c99_stdlib, [
AC_TRY_COMPILE([#include <stdlib.h>],
[char* tmp;
strtof("gnu", &tmp);
strtold("gnu", &tmp);
strtoll("gnu", &tmp, 10);
strtoull("gnu", &tmp, 10);
llabs(10);
lldiv(10,1);
atoll("10");
_Exit(0);
lldiv_t mydivt;],[ac_c99_stdlib=yes], [ac_c99_stdlib=no])
GCC_TRY_COMPILE_OR_LINK(
[#include <stdlib.h>
volatile float f;
volatile long double ld;
volatile unsigned long long ll;
lldiv_t mydivt;],
[char* tmp;
f = strtof("gnu", &tmp);
ld = strtold("gnu", &tmp);
ll = strtoll("gnu", &tmp, 10);
ll = strtoull("gnu", &tmp, 10);
ll = llabs(10);
mydivt = lldiv(10,1);
ll = mydivt.quot;
ll = mydivt.rem;
ll = atoll("10");
_Exit(0);
],[ac_c99_stdlib=yes], [ac_c99_stdlib=no])
])
AC_MSG_RESULT($ac_c99_stdlib)
......@@ -940,6 +976,9 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
<complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.])
fi
gcc_no_link="$ac_save_gcc_no_link"
LIBS="$ac_save_LIBS"
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
fi
......
libstdc++-v3/configure
View file @ 757228f3
......@@ -15436,6 +15436,98 @@ ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ex
ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
 
# Use -fno-exceptions so that the C driver can link these tests without
# hitting undefined references to personality routines.
ac_save_CXXFLAGS="$CXXFLAGS"
ac_save_LIBS="$LIBS"
ac_save_gcc_no_link="$gcc_no_link"
if test x$gcc_no_link != xyes; then
# Use -fno-exceptions to that the C driver can link these tests without
# hitting undefined references to personality routines.
CXXFLAGS="$CXXFLAGS -fno-exceptions"
echo "$as_me:$LINENO: checking for sin in -lm" >&5
echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
if test "${ac_cv_lib_m_sin+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
ac_check_lib_save_LIBS=$LIBS
LIBS="-lm $LIBS"
if test x$gcc_no_link = xyes; then
{ { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
{ (exit 1); exit 1; }; }
fi
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
/* Override any gcc2 internal prototype to avoid an error. */
#ifdef __cplusplus
extern "C"
#endif
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char sin ();
int
main ()
{
sin ();
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_cxx_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_lib_m_sin=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_lib_m_sin=no
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
if test $ac_cv_lib_m_sin = yes; then
LIBS="$LIBS -lm"
else
# Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK
gcc_no_link=yes
fi
fi
# Check for the existence of <math.h> functions used if C99 is enabled.
echo "$as_me:$LINENO: checking for ISO C99 support in <math.h>" >&5
echo $ECHO_N "checking for ISO C99 support in <math.h>... $ECHO_C" >&6
......@@ -15443,6 +15535,7 @@ echo $ECHO_N "checking for ISO C99 support in <math.h>... $ECHO_C" >&6
echo $ECHO_N "(cached) $ECHO_C" >&6
else
 
if test x$gcc_no_link = xyes; then
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
......@@ -15450,22 +15543,24 @@ cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <math.h>
volatile double d1, d2;
volatile int i;
int
main ()
{
fpclassify(0.0);
isfinite(0.0);
isinf(0.0);
isnan(0.0);
isnormal(0.0);
signbit(0.0);
isgreater(0.0,0.0);
isgreaterequal(0.0,0.0);
isless(0.0,0.0);
islessequal(0.0,0.0);
islessgreater(0.0,0.0);
islessgreater(0.0,0.0);
isunordered(0.0,0.0);
i = fpclassify(d1);
i = isfinite(d1);
i = isinf(d1);
i = isnan(d1);
i = isnormal(d1);
i = signbit(d1);
i = isgreater(d1, d2);
i = isgreaterequal(d1, d2);
i = isless(d1, d2);
i = islessequal(d1, d2);
i = islessgreater(d1, d2);
i = islessgreater(d1, d2);
i = isunordered(d1, d2);
 
;
return 0;
......@@ -15501,6 +15596,74 @@ sed 's/^/| /' conftest.$ac_ext >&5
ac_c99_math=no
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
else
if test x$gcc_no_link = xyes; then
{ { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
{ (exit 1); exit 1; }; }
fi
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <math.h>
volatile double d1, d2;
volatile int i;
int
main ()
{
i = fpclassify(d1);
i = isfinite(d1);
i = isinf(d1);
i = isnan(d1);
i = isnormal(d1);
i = signbit(d1);
i = isgreater(d1, d2);
i = isgreaterequal(d1, d2);
i = isless(d1, d2);
i = islessequal(d1, d2);
i = islessgreater(d1, d2);
i = islessgreater(d1, d2);
i = isunordered(d1, d2);
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_cxx_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_c99_math=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_c99_math=no
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
 
fi
 
......@@ -15826,55 +15989,62 @@ done
if test x"$ac_has_complex_h" = x"yes"; then
echo "$as_me:$LINENO: checking for ISO C99 support in <complex.h>" >&5
echo $ECHO_N "checking for ISO C99 support in <complex.h>... $ECHO_C" >&6
cat >conftest.$ac_ext <<_ACEOF
if test x$gcc_no_link = xyes; then
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <complex.h>
typedef __complex__ float float_type;
typedef __complex__ double double_type;
typedef __complex__ long double ld_type;
volatile float_type tmpf;
volatile double_type tmpd;
volatile ld_type tmpld;
volatile float f;
volatile double d;
volatile long double ld;
int
main ()
{
typedef __complex__ float float_type; float_type tmpf;
cabsf(tmpf);
cargf(tmpf);
ccosf(tmpf);
ccoshf(tmpf);
cexpf(tmpf);
clogf(tmpf);
csinf(tmpf);
csinhf(tmpf);
csqrtf(tmpf);
ctanf(tmpf);
ctanhf(tmpf);
cpowf(tmpf, tmpf);
typedef __complex__ double double_type; double_type tmpd;
cabs(tmpd);
carg(tmpd);
ccos(tmpd);
ccosh(tmpd);
cexp(tmpd);
clog(tmpd);
csin(tmpd);
csinh(tmpd);
csqrt(tmpd);
ctan(tmpd);
ctanh(tmpd);
cpow(tmpd, tmpd);
typedef __complex__ long double ld_type; ld_type tmpld;
cabsl(tmpld);
cargl(tmpld);
ccosl(tmpld);
ccoshl(tmpld);
cexpl(tmpld);
clogl(tmpld);
csinl(tmpld);
csinhl(tmpld);
csqrtl(tmpld);
ctanl(tmpld);
ctanhl(tmpld);
cpowl(tmpld, tmpld);
f = cabsf(tmpf);
f = cargf(tmpf);
tmpf = ccosf(tmpf);
tmpf = ccoshf(tmpf);
tmpf = cexpf(tmpf);
tmpf = clogf(tmpf);
tmpf = csinf(tmpf);
tmpf = csinhf(tmpf);
tmpf = csqrtf(tmpf);
tmpf = ctanf(tmpf);
tmpf = ctanhf(tmpf);
tmpf = cpowf(tmpf, tmpf);
d = cabs(tmpd);
d = carg(tmpd);
tmpd = ccos(tmpd);
tmpd = ccosh(tmpd);
tmpd = cexp(tmpd);
tmpd = clog(tmpd);
tmpd = csin(tmpd);
tmpd = csinh(tmpd);
tmpd = csqrt(tmpd);
tmpd = ctan(tmpd);
tmpd = ctanh(tmpd);
tmpd = cpow(tmpd, tmpd);
ld = cabsl(tmpld);
ld = cargl(tmpld);
tmpld = ccosl(tmpld);
tmpld = ccoshl(tmpld);
tmpld = cexpl(tmpld);
tmpld = clogl(tmpld);
tmpld = csinl(tmpld);
tmpld = csinhl(tmpld);
tmpld = csqrtl(tmpld);
tmpld = ctanl(tmpld);
tmpld = ctanhl(tmpld);
tmpld = cpowl(tmpld, tmpld);
 
;
return 0;
......@@ -15910,6 +16080,104 @@ sed 's/^/| /' conftest.$ac_ext >&5
ac_c99_complex=no
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
else
if test x$gcc_no_link = xyes; then
{ { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
{ (exit 1); exit 1; }; }
fi
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <complex.h>
typedef __complex__ float float_type;
typedef __complex__ double double_type;
typedef __complex__ long double ld_type;
volatile float_type tmpf;
volatile double_type tmpd;
volatile ld_type tmpld;
volatile float f;
volatile double d;
volatile long double ld;
int
main ()
{
f = cabsf(tmpf);
f = cargf(tmpf);
tmpf = ccosf(tmpf);
tmpf = ccoshf(tmpf);
tmpf = cexpf(tmpf);
tmpf = clogf(tmpf);
tmpf = csinf(tmpf);
tmpf = csinhf(tmpf);
tmpf = csqrtf(tmpf);
tmpf = ctanf(tmpf);
tmpf = ctanhf(tmpf);
tmpf = cpowf(tmpf, tmpf);
d = cabs(tmpd);
d = carg(tmpd);
tmpd = ccos(tmpd);
tmpd = ccosh(tmpd);
tmpd = cexp(tmpd);
tmpd = clog(tmpd);
tmpd = csin(tmpd);
tmpd = csinh(tmpd);
tmpd = csqrt(tmpd);
tmpd = ctan(tmpd);
tmpd = ctanh(tmpd);
tmpd = cpow(tmpd, tmpd);
ld = cabsl(tmpld);
ld = cargl(tmpld);
tmpld = ccosl(tmpld);
tmpld = ccoshl(tmpld);
tmpld = cexpl(tmpld);
tmpld = clogl(tmpld);
tmpld = csinl(tmpld);
tmpld = csinhl(tmpld);
tmpld = csqrtl(tmpld);
tmpld = ctanl(tmpld);
tmpld = ctanhl(tmpld);
tmpld = cpowl(tmpld, tmpld);
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_cxx_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_c99_complex=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_c99_complex=no
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
fi
echo "$as_me:$LINENO: result: $ac_c99_complex" >&5
echo "${ECHO_T}$ac_c99_complex" >&6
......@@ -15928,6 +16196,7 @@ echo $ECHO_N "checking for ISO C99 support in <stdio.h>... $ECHO_C" >&6
echo $ECHO_N "(cached) $ECHO_C" >&6
else
 
if test x$gcc_no_link = xyes; then
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
......@@ -15935,15 +16204,15 @@ cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <stdio.h>
#include <stdarg.h>
void foo(char* fmt, ...)
{
va_list args; va_start(args, fmt);
vfscanf(stderr, "%i", args);
vscanf("%i", args);
vsnprintf(fmt, 0, "%i", args);
vsscanf(fmt, "%i", args);
}
#include <stdarg.h>
void foo(char* fmt, ...)
{
va_list args; va_start(args, fmt);
vfscanf(stderr, "%i", args);
vscanf("%i", args);
vsnprintf(fmt, 0, "%i", args);
vsscanf(fmt, "%i", args);
}
int
main ()
{
......@@ -15982,6 +16251,68 @@ sed 's/^/| /' conftest.$ac_ext >&5
ac_c99_stdio=no
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
else
if test x$gcc_no_link = xyes; then
{ { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
{ (exit 1); exit 1; }; }
fi
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <stdio.h>
#include <stdarg.h>
void foo(char* fmt, ...)
{
va_list args; va_start(args, fmt);
vfscanf(stderr, "%i", args);
vscanf("%i", args);
vsnprintf(fmt, 0, "%i", args);
vsscanf(fmt, "%i", args);
}
int
main ()
{
snprintf("12", 0, "%i");
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_cxx_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_c99_stdio=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_c99_stdio=no
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
 
fi
 
......@@ -15995,6 +16326,7 @@ echo $ECHO_N "checking for ISO C99 support in <stdlib.h>... $ECHO_C" >&6
echo $ECHO_N "(cached) $ECHO_C" >&6
else
 
if test x$gcc_no_link = xyes; then
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
......@@ -16002,19 +16334,25 @@ cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <stdlib.h>
volatile float f;
volatile long double ld;
volatile unsigned long long ll;
lldiv_t mydivt;
int
main ()
{
char* tmp;
strtof("gnu", &tmp);
strtold("gnu", &tmp);
strtoll("gnu", &tmp, 10);
strtoull("gnu", &tmp, 10);
llabs(10);
lldiv(10,1);
atoll("10");
_Exit(0);
lldiv_t mydivt;
f = strtof("gnu", &tmp);
ld = strtold("gnu", &tmp);
ll = strtoll("gnu", &tmp, 10);
ll = strtoull("gnu", &tmp, 10);
ll = llabs(10);
mydivt = lldiv(10,1);
ll = mydivt.quot;
ll = mydivt.rem;
ll = atoll("10");
_Exit(0);
;
return 0;
}
......@@ -16049,6 +16387,74 @@ sed 's/^/| /' conftest.$ac_ext >&5
ac_c99_stdlib=no
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
else
if test x$gcc_no_link = xyes; then
{ { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
{ (exit 1); exit 1; }; }
fi
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <stdlib.h>
volatile float f;
volatile long double ld;
volatile unsigned long long ll;
lldiv_t mydivt;
int
main ()
{
char* tmp;
f = strtof("gnu", &tmp);
ld = strtold("gnu", &tmp);
ll = strtoll("gnu", &tmp, 10);
ll = strtoull("gnu", &tmp, 10);
ll = llabs(10);
mydivt = lldiv(10,1);
ll = mydivt.quot;
ll = mydivt.rem;
ll = atoll("10");
_Exit(0);
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_cxx_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_c99_stdlib=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_c99_stdlib=no
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
 
fi
 
......@@ -16386,6 +16792,9 @@ _ACEOF
 
fi
 
gcc_no_link="$ac_save_gcc_no_link"
LIBS="$ac_save_LIBS"
CXXFLAGS="$ac_save_CXXFLAGS"
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
......@@ -17305,7 +17714,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
# Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
cat > conftest.$ac_ext << EOF
#line 17308 "configure"
#line 17717 "configure"
int main()
{
// NB: _Atomic_word not necessarily int.
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