# Keep these sync'd with the list in Makefile.am. The first provides an
# expandable list at autoconf time; the second provides an expandable list
# (i.e., shell variable) at configure time.
- m4_define([glibcxx_SUBDIRS],[include libmath libsupc++ src po testsuite])
+ m4_define([glibcxx_SUBDIRS],[include libmath libsupc++ src doc po testsuite])
SUBDIRS='glibcxx_SUBDIRS'
# These need to be absolute paths, yet at the same time need to
dnl LD (as a side effect of testing)
dnl Sets:
dnl with_gnu_ld
+dnl glibcxx_ld_is_gold (set to "no" or "yes")
dnl glibcxx_gnu_ld_version (possibly)
dnl
dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will
# Start by getting the version number. I think the libtool test already
# does some of this, but throws away the result.
+ glibcxx_ld_is_gold=no
if test x"$with_gnu_ld" = x"yes"; then
AC_MSG_CHECKING([for ld version])
changequote(,)
+ if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+ glibcxx_ld_is_gold=yes
+ fi
ldver=`$LD --version 2>/dev/null | head -1 | \
- sed -e 's/GNU ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\3/'`
+ sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
changequote([,])
glibcxx_gnu_ld_version=`echo $ldver | \
$AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
fi
# Set --gc-sections.
- glibcxx_gcsections_min_ld=21602
- if test x"$with_gnu_ld" = x"yes" &&
+ glibcxx_have_gc_sections=no
+ if test "$glibcxx_ld_is_gold" = "yes"; then
+ if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+ glibcxx_have_gc_sections=yes
+ fi
+ else
+ glibcxx_gcsections_min_ld=21602
+ if test x"$with_gnu_ld" = x"yes" &&
test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-
+ glibcxx_have_gc_sections=yes
+ fi
+ fi
+ if test "$glibcxx_have_gc_sections" = "yes"; then
# Sufficiently young GNU ld it is! Joy and bunny rabbits!
# NB: This flag only works reliably after 2.16.1. Configure tests
# for this are difficult, so hard wire a value that should work.
GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE)
# Check for rlimit, setrlimit.
- AC_CACHE_VAL(ac_setrlimit, [
+ AC_CACHE_VAL(glibcxx_cv_setrlimit, [
AC_TRY_COMPILE(
[#include <unistd.h>
#include <sys/time.h>
],
[struct rlimit r;
setrlimit(0, &r);],
- [ac_setrlimit=yes], [ac_setrlimit=no])
+ [glibcxx_cv_setrlimit=yes], [glibcxx_cv_setrlimit=no])
])
fi
AC_MSG_CHECKING([for testsuite resource limits support])
- if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
+ if test $setrlimit_have_headers = yes && test $glibcxx_cv_setrlimit = yes; then
ac_res_limits=yes
AC_DEFINE(_GLIBCXX_RES_LIMITS, 1,
[Define if using setrlimit to set resource limits during
dnl
dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T.
+dnl Also check whether int64_t is actually a typedef to long or long long.
dnl
AC_DEFUN([GLIBCXX_CHECK_INT64_T], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+
AC_MSG_CHECKING([for int64_t])
AC_CACHE_VAL(glibcxx_cv_INT64_T, [
AC_TRY_COMPILE(
[glibcxx_cv_INT64_T=yes],
[glibcxx_cv_INT64_T=no])
])
+
if test $glibcxx_cv_INT64_T = yes; then
AC_DEFINE(HAVE_INT64_T, 1, [Define if int64_t is available in <stdint.h>.])
+ AC_MSG_RESULT($glibcxx_cv_INT64_T)
+
+ AC_MSG_CHECKING([for int64_t as long])
+ AC_CACHE_VAL(glibcxx_cv_int64_t_long, [
+ AC_TRY_COMPILE(
+ [#include <stdint.h>
+ template<typename, typename> struct same { enum { value = -1 }; };
+ template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; };
+ int array[same<int64_t, long>::value];], [],
+ [glibcxx_cv_int64_t_long=yes], [glibcxx_cv_int64_t_long=no])
+ ])
+
+ if test $glibcxx_cv_int64_t_long = yes; then
+ AC_DEFINE(HAVE_INT64_T_LONG, 1, [Define if int64_t is a long.])
+ AC_MSG_RESULT($glibcxx_cv_int64_t_long)
+ fi
+
+ AC_MSG_CHECKING([for int64_t as long long])
+ AC_CACHE_VAL(glibcxx_cv_int64_t_long_long, [
+ AC_TRY_COMPILE(
+ [#include <stdint.h>
+ template<typename, typename> struct same { enum { value = -1 }; };
+ template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; };
+ int array[same<int64_t, long long>::value];], [],
+ [glibcxx_cv_int64_t_long_long=yes], [glibcxx_cv_int64_t_long_long=no])
+ ])
+
+ if test $glibcxx_cv_int64_t_long_long = yes; then
+ AC_DEFINE(HAVE_INT64_T_LONG_LONG, 1, [Define if int64_t is a long long.])
+ AC_MSG_RESULT($glibcxx_cv_int64_t_long_long)
+ fi
fi
- AC_MSG_RESULT($glibcxx_cv_INT64_T)
+
+ AC_LANG_RESTORE
])
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
+ # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
+ # undefined and fake C99 facilities - like pre-standard snprintf - may be
+ # spuriously enabled.
+ # Long term, -std=c++0x could be even better, could manage to explicitely
+ # request C99 facilities to the underlying C headers.
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -std=c++98"
+ ac_save_LIBS="$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])
+ AC_CACHE_VAL(glibcxx_cv_c99_math, [
+ 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);
+ ],[glibcxx_cv_c99_math=yes], [glibcxx_cv_c99_math=no])
])
- AC_MSG_RESULT($ac_c99_math)
- if test x"$ac_c99_math" = x"yes"; then
+ AC_MSG_RESULT($glibcxx_cv_c99_math)
+ if test x"$glibcxx_cv_c99_math" = x"yes"; then
AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1,
[Define if C99 functions or macros in <math.h> should be imported
in <cmath> in namespace std.])
# to the library function is emitted.
AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no)
AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
- ac_c99_complex=no;
+ glibcxx_cv_c99_complex=no;
if test x"$ac_has_complex_h" = x"yes"; then
AC_MSG_CHECKING([for ISO C99 support in <complex.h>])
- AC_TRY_COMPILE([#include <complex.h>],
- [typedef __complex__ float float_type; float_type tmpf;
- cabsf(tmpf);
- cargf(tmpf);
- ccosf(tmpf);
- ccoshf(tmpf);
- cexpf(tmpf);
- clogf(tmpf);
- csinf(tmpf);
- csinhf(tmpf);
- csqrtf(tmpf);
- ctanf(tmpf);
- ctanhf(tmpf);
- cpowf(tmpf, tmpf);
- typedef __complex__ double double_type; double_type tmpd;
- cabs(tmpd);
- carg(tmpd);
- ccos(tmpd);
- ccosh(tmpd);
- cexp(tmpd);
- clog(tmpd);
- csin(tmpd);
- csinh(tmpd);
- csqrt(tmpd);
- ctan(tmpd);
- ctanh(tmpd);
- cpow(tmpd, tmpd);
- typedef __complex__ long double ld_type; ld_type tmpld;
- cabsl(tmpld);
- cargl(tmpld);
- ccosl(tmpld);
- ccoshl(tmpld);
- cexpl(tmpld);
- clogl(tmpld);
- csinl(tmpld);
- csinhl(tmpld);
- csqrtl(tmpld);
- ctanl(tmpld);
- ctanhl(tmpld);
- cpowl(tmpld, tmpld);
- ],[ac_c99_complex=yes], [ac_c99_complex=no])
- fi
- AC_MSG_RESULT($ac_c99_complex)
- if test x"$ac_c99_complex" = x"yes"; then
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <complex.h>
+ typedef __complex__ float float_type;
+ typedef __complex__ double double_type;
+ typedef __complex__ long double ld_type;
+ volatile float_type tmpf;
+ volatile double_type tmpd;
+ volatile ld_type tmpld;
+ volatile float f;
+ volatile double d;
+ volatile long double ld;],
+ [f = cabsf(tmpf);
+ f = cargf(tmpf);
+ tmpf = ccosf(tmpf);
+ tmpf = ccoshf(tmpf);
+ tmpf = cexpf(tmpf);
+ tmpf = clogf(tmpf);
+ tmpf = csinf(tmpf);
+ tmpf = csinhf(tmpf);
+ tmpf = csqrtf(tmpf);
+ tmpf = ctanf(tmpf);
+ tmpf = ctanhf(tmpf);
+ tmpf = cpowf(tmpf, tmpf);
+ tmpf = cprojf(tmpf);
+ d = cabs(tmpd);
+ d = carg(tmpd);
+ tmpd = ccos(tmpd);
+ tmpd = ccosh(tmpd);
+ tmpd = cexp(tmpd);
+ tmpd = clog(tmpd);
+ tmpd = csin(tmpd);
+ tmpd = csinh(tmpd);
+ tmpd = csqrt(tmpd);
+ tmpd = ctan(tmpd);
+ tmpd = ctanh(tmpd);
+ tmpd = cpow(tmpd, tmpd);
+ tmpd = cproj(tmpd);
+ ld = cabsl(tmpld);
+ ld = cargl(tmpld);
+ tmpld = ccosl(tmpld);
+ tmpld = ccoshl(tmpld);
+ tmpld = cexpl(tmpld);
+ tmpld = clogl(tmpld);
+ tmpld = csinl(tmpld);
+ tmpld = csinhl(tmpld);
+ tmpld = csqrtl(tmpld);
+ tmpld = ctanl(tmpld);
+ tmpld = ctanhl(tmpld);
+ tmpld = cpowl(tmpld, tmpld);
+ tmpld = cprojl(tmpld);
+ ],[glibcxx_cv_c99_complex=yes], [glibcxx_cv_c99_complex=no])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_c99_complex)
+ if test x"$glibcxx_cv_c99_complex" = x"yes"; then
AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1,
[Define if C99 functions in <complex.h> should be used in
<complex>. Using compiler builtins for these functions requires
# Check for the existence in <stdio.h> of vscanf, et. al.
AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
- AC_CACHE_VAL(ac_c99_stdio, [
- AC_TRY_COMPILE([#include <stdio.h>
- #include <stdarg.h>
- void foo(char* fmt, ...)
- {
- va_list args; va_start(args, fmt);
- vfscanf(stderr, "%i", args);
- vscanf("%i", args);
- vsnprintf(fmt, 0, "%i", args);
- vsscanf(fmt, "%i", args);
- }],
- [snprintf("12", 0, "%i");],
- [ac_c99_stdio=yes], [ac_c99_stdio=no])
+ AC_CACHE_VAL(glibcxx_cv_c99_stdio, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <stdio.h>
+ #include <stdarg.h>
+ void foo(char* fmt, ...)
+ {
+ va_list args; va_start(args, fmt);
+ vfscanf(stderr, "%i", args);
+ vscanf("%i", args);
+ vsnprintf(fmt, 0, "%i", args);
+ vsscanf(fmt, "%i", args);
+ }],
+ [snprintf("12", 0, "%i");],
+ [glibcxx_cv_c99_stdio=yes], [glibcxx_cv_c99_stdio=no])
])
- AC_MSG_RESULT($ac_c99_stdio)
+ AC_MSG_RESULT($glibcxx_cv_c99_stdio)
# Check for the existence in <stdlib.h> of lldiv_t, et. al.
AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
- AC_CACHE_VAL(ac_c99_stdlib, [
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp;
- strtof("gnu", &tmp);
- strtold("gnu", &tmp);
- strtoll("gnu", &tmp, 10);
- strtoull("gnu", &tmp, 10);
- llabs(10);
- lldiv(10,1);
- atoll("10");
- _Exit(0);
- lldiv_t mydivt;],[ac_c99_stdlib=yes], [ac_c99_stdlib=no])
+ AC_CACHE_VAL(glibcxx_cv_c99_stdlib, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <stdlib.h>
+ volatile float f;
+ volatile long double ld;
+ volatile unsigned long long ll;
+ lldiv_t mydivt;],
+ [char* tmp;
+ f = strtof("gnu", &tmp);
+ ld = strtold("gnu", &tmp);
+ ll = strtoll("gnu", &tmp, 10);
+ ll = strtoull("gnu", &tmp, 10);
+ ll = llabs(10);
+ mydivt = lldiv(10,1);
+ ll = mydivt.quot;
+ ll = mydivt.rem;
+ ll = atoll("10");
+ _Exit(0);
+ ],[glibcxx_cv_c99_stdlib=yes], [glibcxx_cv_c99_stdlib=no])
])
- AC_MSG_RESULT($ac_c99_stdlib)
+ AC_MSG_RESULT($glibcxx_cv_c99_stdlib)
# Check for the existence in <wchar.h> of wcstold, etc.
- ac_c99_wchar=no;
+ glibcxx_cv_c99_wchar=no;
if test x"$ac_has_wchar_h" = xyes &&
test x"$ac_has_wctype_h" = xyes; then
AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
using ::wcstoll;
using ::wcstoull;
}
- ],[],[ac_c99_wchar=yes], [ac_c99_wchar=no])
+ ],[],[glibcxx_cv_c99_wchar=yes], [glibcxx_cv_c99_wchar=no])
# Checks for wide character functions that may not be present.
# Injection of these is wrapped with guard macros.
[AC_DEFINE(HAVE_ISWBLANK,1,
[Defined if iswblank exists.])],[])
- AC_MSG_RESULT($ac_c99_wchar)
+ AC_MSG_RESULT($glibcxx_cv_c99_wchar)
fi
# Option parsed, now set things appropriately.
- if test x"$ac_c99_math" = x"no" ||
- test x"$ac_c99_complex" = x"no" ||
- test x"$ac_c99_stdio" = x"no" ||
- test x"$ac_c99_stdlib" = x"no" ||
- test x"$ac_c99_wchar" = x"no"; then
+ if test x"$glibcxx_cv_c99_math" = x"no" ||
+ test x"$glibcxx_cv_c99_complex" = x"no" ||
+ test x"$glibcxx_cv_c99_stdio" = x"no" ||
+ test x"$glibcxx_cv_c99_stdlib" = x"no" ||
+ test x"$glibcxx_cv_c99_wchar" = x"no"; then
enable_c99=no;
else
AC_DEFINE(_GLIBCXX_USE_C99, 1,
<complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.])
fi
+ gcc_no_link="$ac_save_gcc_no_link"
+ LIBS="$ac_save_LIBS"
+ CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
fi
dnl
+dnl Check for IEEE Std 1003.1-2001 clock_gettime required for
+dnl 20.8.5 [time.clock] in the current C++0X working draft.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_CLOCK_GETTIME], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
+ ac_save_LIBS="$LIBS"
+
+ AC_SEARCH_LIBS(clock_gettime, [posix4])
+
+ # Link to -lposix4.
+ case "$ac_cv_search_clock_gettime" in
+ -lposix4*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime
+ esac
+
+ AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no)
+
+ ac_has_clock_monotonic=no;
+ ac_has_clock_realtime=no;
+ if test x"$ac_has_unistd_h" = x"yes"; then
+ AC_MSG_CHECKING([for monotonic clock])
+ AC_TRY_LINK(
+ [#include <unistd.h>
+ #include <time.h>
+ ],
+ [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
+ timespec tp;
+ #endif
+ clock_gettime(CLOCK_MONOTONIC, &tp);
+ ], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no])
+
+ AC_MSG_RESULT($ac_has_clock_monotonic)
+
+ AC_MSG_CHECKING([for realtime clock])
+ AC_TRY_LINK(
+ [#include <unistd.h>
+ #include <time.h>
+ ],
+ [#if _POSIX_TIMERS > 0
+ timespec tp;
+ #endif
+ clock_gettime(CLOCK_REALTIME, &tp);
+ ], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no])
+
+ AC_MSG_RESULT($ac_has_clock_realtime)
+ fi
+
+ if test x"$ac_has_clock_monotonic" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1,
+ [ Defined if clock_gettime has monotonic clock support. ])
+ fi
+
+ if test x"$ac_has_clock_realtime" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_CLOCK_REALTIME, 1,
+ [ Defined if clock_gettime has realtime clock support. ])
+ fi
+
+ AC_SUBST(GLIBCXX_LIBS)
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ LIBS="$ac_save_LIBS"
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check for IEEE Std 1003.1-2001 gettimeofday required for
+dnl 20.8.5 [time.clock] in the current C++0X working draft.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
+
+ ac_has_gettimeofday=no;
+ AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no)
+ if test x"$ac_has_sys_time_h" = x"yes"; then
+ AC_MSG_CHECKING([for gettimeofday])
+ AC_TRY_LINK([#include <sys/time.h>],
+ [timeval tv; gettimeofday(&tv, 0);],
+ [ac_has_gettimeofday=yes], [ac_has_gettimeofday=no])
+
+ AC_MSG_RESULT($ac_has_gettimeofday)
+ fi
+
+ if test x"$ac_has_gettimeofday" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1,
+ [ Defined if gettimeofday is available. ])
+ fi
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
+
+dnl
dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1"
dnl facilities in Chapter 8, "C compatibility".
dnl
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
+ # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
+ # undefined and fake C99 facilities may be spuriously enabled.
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -std=c++98"
+
# Check for the existence of <complex.h> complex math functions used
# by tr1/complex.
AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
# Check for the existence of <ctype.h> functions.
AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>])
- AC_CACHE_VAL(ac_c99_ctype_tr1, [
+ AC_CACHE_VAL(glibcxx_cv_c99_ctype_tr1, [
AC_TRY_COMPILE([#include <ctype.h>],
[int ch;
int ret;
ret = isblank(ch);
- ],[ac_c99_ctype_tr1=yes], [ac_c99_ctype_tr1=no])
+ ],[glibcxx_cv_c99_ctype_tr1=yes],
+ [glibcxx_cv_c99_ctype_tr1=no])
])
- AC_MSG_RESULT($ac_c99_ctype_tr1)
- if test x"$ac_c99_ctype_tr1" = x"yes"; then
+ AC_MSG_RESULT($glibcxx_cv_c99_ctype_tr1)
+ if test x"$glibcxx_cv_c99_ctype_tr1" = x"yes"; then
AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1,
[Define if C99 functions in <ctype.h> should be imported in
<tr1/cctype> in namespace std::tr1.])
# Check for the existence of <stdint.h> types.
AC_MSG_CHECKING([for ISO C99 support to TR1 in <stdint.h>])
- AC_CACHE_VAL(ac_c99_stdint_tr1, [
+ AC_CACHE_VAL(glibcxx_cv_c99_stdint_tr1, [
AC_TRY_COMPILE([#include <stdint.h>],
[typedef int8_t my_int8_t;
typedef int16_t my_int16_t;
typedef uint_least64_t my_uint_least64_t;
typedef uintmax_t my_uintmax_t;
typedef uintptr_t my_uintptr_t;
- ],[ac_c99_stdint_tr1=yes], [ac_c99_stdint_tr1=no])
+ ],[glibcxx_cv_c99_stdint_tr1=yes],
+ [glibcxx_cv_c99_stdint_tr1=no])
])
- AC_MSG_RESULT($ac_c99_stdint_tr1)
- if test x"$ac_c99_stdint_tr1" = x"yes"; then
+ AC_MSG_RESULT($glibcxx_cv_c99_stdint_tr1)
+ if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1,
[Define if C99 types in <stdint.h> should be imported in
<tr1/cstdint> in namespace std::tr1.])
# Check for the existence of <math.h> functions.
AC_MSG_CHECKING([for ISO C99 support to TR1 in <math.h>])
- AC_CACHE_VAL(ac_c99_math_tr1, [
+ AC_CACHE_VAL(glibcxx_cv_c99_math_tr1, [
AC_TRY_COMPILE([#include <math.h>],
[typedef double_t my_double_t;
typedef float_t my_float_t;
trunc(0.0);
truncf(0.0f);
truncl(0.0l);
- ],[ac_c99_math_tr1=yes], [ac_c99_math_tr1=no])
+ ],[glibcxx_cv_c99_math_tr1=yes], [glibcxx_cv_c99_math_tr1=no])
])
- AC_MSG_RESULT($ac_c99_math_tr1)
- if test x"$ac_c99_math_tr1" = x"yes"; then
+ AC_MSG_RESULT($glibcxx_cv_c99_math_tr1)
+ if test x"$glibcxx_cv_c99_math_tr1" = x"yes"; then
AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1,
[Define if C99 functions or macros in <math.h> should be imported
in <tr1/cmath> in namespace std::tr1.])
# Check for the existence of <inttypes.h> functions (NB: doesn't make
# sense if the previous check fails, per C99, 7.8/1).
ac_c99_inttypes_tr1=no;
- if test x"$ac_c99_stdint_tr1" = x"yes"; then
+ if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>])
AC_TRY_COMPILE([#include <inttypes.h>],
[intmax_t i, numer, denom, base;
# Check for the existence of the <stdbool.h> header.
AC_CHECK_HEADERS(stdbool.h)
+ CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
])
AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [
AC_MSG_CHECKING([for "dev/random" and "dev/urandom" for TR1 random_device])
- AC_CACHE_VAL(ac_random_tr1, [
+ AC_CACHE_VAL(glibcxx_cv_random_tr1, [
AC_TRY_RUN([#include <stdio.h>
int main()
{
&& fopen("/dev/urandom", "r"));
}
],
- [ac_random_tr1=yes], [ac_random_tr1=no],
- [ac_random_tr1=no])
+ [glibcxx_cv_random_tr1=yes], [glibcxx_cv_random_tr1=no],
+ [glibcxx_cv_random_tr1=no])
])
- AC_MSG_RESULT($ac_random_tr1)
- if test x"$ac_random_tr1" = x"yes"; then
+ AC_MSG_RESULT($glibcxx_cv_random_tr1)
+ if test x"$glibcxx_cv_random_tr1" = x"yes"; then
AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1,
[Define if dev/random and dev/urandom are available for
the random_device of TR1 (Chapter 5.1).])
])
dnl
-dnl Check whether macros, etc are present for <system_error>
+dnl Check whether EOF, SEEK_CUR, and SEEK_END have the most common values:
+dnl in that case including <cstdio> in some C++ headers can be avoided.
dnl
-AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [
+AC_DEFUN([GLIBCXX_CHECK_STDIO_MACROS], [
- AC_MSG_CHECKING([for EOWNERDEAD])
- AC_CACHE_VAL(ac_system_error1, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = EOWNERDEAD; ],
- [ac_system_error1=yes], [ac_system_error1=no])
+ AC_MSG_CHECKING([for EOF == -1, SEEK_CUR == 1, SEEK_END == 2])
+ AC_CACHE_VAL(glibcxx_cv_stdio_macros, [
+ AC_TRY_COMPILE([#include <stdio.h>],
+ [#if ((EOF != -1) || (SEEK_CUR != 1) || (SEEK_END != 2))
+ unusual values...
+ #endif
+ ], [glibcxx_cv_stdio_macros=yes],
+ [glibcxx_cv_stdio_macros=no])
])
- AC_MSG_RESULT($ac_system_error1)
- if test x"$ac_system_error1" = x"yes"; then
- AC_DEFINE(HAVE_EOWNERDEAD, 1, [Define if EOWNERDEAD exists.])
+ AC_MSG_RESULT($glibcxx_cv_stdio_macros)
+ if test x"$glibcxx_cv_stdio_macros" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_STDIO_MACROS, 1,
+ [Define if EOF == -1, SEEK_CUR == 1, SEEK_END == 2.])
fi
- AC_MSG_CHECKING([for ENOTRECOVERABLE])
- AC_CACHE_VAL(ac_system_error2, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = ENOTRECOVERABLE; ],
- [ac_system_error2=yes], [ac_system_error2=no])
- ])
- AC_MSG_RESULT($ac_system_error2)
- if test x"$ac_system_error2" = x"yes"; then
- AC_DEFINE(HAVE_ENOTRECOVERABLE, 1, [Define if ENOTRECOVERABLE exists.])
- fi
-
- AC_MSG_CHECKING([for ENOLINK])
- AC_CACHE_VAL(ac_system_error3, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = ENOLINK; ],
- [ac_system_error3=yes], [ac_system_error3=no])
- ])
- AC_MSG_RESULT($ac_system_error3)
- if test x"$ac_system_error3" = x"yes"; then
- AC_DEFINE(HAVE_ENOLINK, 1, [Define if ENOLINK exists.])
- fi
+])
- AC_MSG_CHECKING([for EPROTO])
- AC_CACHE_VAL(ac_system_error_4, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = EPROTO; ],
- [ac_system_error_4=yes], [ac_system_error_4=no])
- ])
- AC_MSG_RESULT($ac_system_error_4)
- if test x"$ac_system_error_4" = x"yes"; then
- AC_DEFINE(HAVE_EPROTO, 1, [Define if EPROTO exists.])
- fi
+dnl
+dnl Check whether macros, etc are present for <system_error>
+dnl
+AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [
- AC_MSG_CHECKING([for ENODATA])
- AC_CACHE_VAL(ac_system_error_5, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = ENODATA; ],
- [ac_system_error_5=yes], [ac_system_error_5=no])
- ])
- AC_MSG_RESULT($ac_system_error_5)
- if test x"$ac_system_error_5" = x"yes"; then
- AC_DEFINE(HAVE_ENODATA, 1, [Define if ENODATA exists.])
- fi
+m4_pushdef([n_syserr], [1])dnl
+m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA,
+ ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED,
+ EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY],
+[m4_pushdef([SYSERR], m4_toupper(syserr))dnl
+AC_MSG_CHECKING([for syserr])
+AC_CACHE_VAL([glibcxx_cv_system_error[]n_syserr], [
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]],
+ [int i = syserr;])],
+ [glibcxx_cv_system_error[]n_syserr=yes],
+ [glibcxx_cv_system_error[]n_syserr=no])
+])
+AC_MSG_RESULT([$glibcxx_cv_system_error[]n_syserr])
+if test x"$glibcxx_cv_system_error[]n_syserr" = x"yes"; then
+ AC_DEFINE([HAVE_]SYSERR, 1, [Define if ]syserr[ exists.])
+fi
+m4_define([n_syserr], m4_incr(n_syserr))dnl
+m4_popdef([SYSERR])dnl
+])
+m4_popdef([n_syserr])dnl
+])
- AC_MSG_CHECKING([for ENOSR])
- AC_CACHE_VAL(ac_system_error_6, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = ENOSR; ],
- [ac_system_error_6=yes], [ac_system_error_6=no])
- ])
- AC_MSG_RESULT($ac_system_error_6)
- if test x"$ac_system_error_6" = x"yes"; then
- AC_DEFINE(HAVE_ENOSR, 1, [Define if ENOSR exists.])
- fi
+dnl
+dnl Check whether C++200x's standard layout types are supported.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_STANDARD_LAYOUT], [
- AC_MSG_CHECKING([for ENOSTR])
- AC_CACHE_VAL(ac_system_error_7, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = ENOSTR; ],
- [ac_system_error_7=yes], [ac_system_error_7=no])
- ])
- AC_MSG_RESULT($ac_system_error_7)
- if test x"$ac_system_error_7" = x"yes"; then
- AC_DEFINE(HAVE_ENOSTR, 1, [Define if ENOSTR exists.])
- fi
+ AC_MSG_CHECKING([for ISO C++200x standard layout type support])
+ AC_CACHE_VAL(ac_standard_layout, [
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_test_CXXFLAGS="${CXXFLAGS+set}"
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS='-std=gnu++0x'
- AC_MSG_CHECKING([for ETIME])
- AC_CACHE_VAL(ac_system_error_8, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = ETIME; ],
- [ac_system_error_8=yes], [ac_system_error_8=no])
- ])
- AC_MSG_RESULT($ac_system_error_8)
- if test x"$ac_system_error_8" = x"yes"; then
- AC_DEFINE(HAVE_ETIME, 1, [Define if ETIME exists.])
- fi
+ AC_TRY_COMPILE([struct b
+ {
+ bool t;
- AC_MSG_CHECKING([for sys_nerr])
- AC_CACHE_VAL(ac_system_error9, [
- AC_TRY_COMPILE([#include <errno.h> ], [ int i = sys_nerr; ],
- [ac_system_error9=yes], [ac_system_error9=no])
- ])
- AC_MSG_RESULT($ac_system_error9)
- if test x"$ac_system_error9" = x"yes"; then
- AC_DEFINE(HAVE_SYS_NERR, 1, [Define if sys_nerr exists.])
- fi
+ // Need standard layout relaxation from POD
+ private:
+ b& operator=(const b&);
+ b(const b&);
+ };
- AC_MSG_CHECKING([for EBADMSG])
- AC_CACHE_VAL(ac_system_error_10, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = EBADMSG; ],
- [ac_system_error_10=yes], [ac_system_error_10=no])
- ])
- AC_MSG_RESULT($ac_system_error_10)
- if test x"$ac_system_error_10" = x"yes"; then
- AC_DEFINE(HAVE_EBADMSG, 1, [Define if EBADMSG exists.])
- fi
+ int main()
+ {
+ b tst1 = { false };
+ return 0;
+ }],,
+ [ac_standard_layout=yes], [ac_standard_layout=no])
- AC_MSG_CHECKING([for ECANCELED])
- AC_CACHE_VAL(ac_system_error_11, [
- AC_TRY_COMPILE([#include <errno.h>], [ int i = ECANCELED; ],
- [ac_system_error_11=yes], [ac_system_error_11=no])
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
])
- AC_MSG_RESULT($ac_system_error_11)
- if test x"$ac_system_error_11" = x"yes"; then
- AC_DEFINE(HAVE_ECANCELED, 1, [Define if ECANCELED exists.])
+ AC_MSG_RESULT($ac_standard_layout)
+ if test x"$ac_standard_layout" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_STANDARD_LAYOUT, 1,
+ [Define if standard layout types are supported in C++200x.])
fi
])
fi
])
+dnl
+dnl Check for parallel mode pre-requisites, including OpenMP support.
+dnl
+dnl + Usage: GLIBCXX_ENABLE_PARALLEL
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [
+
+ enable_parallel=no;
+
+ # See if configured libgomp/omp.h exists. (libgomp may be in
+ # noconfigdirs but not explicitly disabled.)
+ if test -f $glibcxx_builddir/../libgomp/omp.h; then
+ enable_parallel=yes;
+ else
+ AC_MSG_NOTICE([$glibcxx_builddir/../libgomp/omp.h not found])
+ fi
+
+ AC_MSG_CHECKING([for parallel mode support])
+ AC_MSG_RESULT([$enable_parallel])
+ GLIBCXX_CONDITIONAL(ENABLE_PARALLEL, test $enable_parallel = yes)
+])
+
dnl
dnl Check for which I/O library to use: stdio, or something specific.
GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes)
if test $enable_libstdcxx_pch = yes; then
- glibcxx_PCHFLAGS="-include bits/stdtr1c++.h"
+ glibcxx_PCHFLAGS="-include bits/stdc++.h"
else
glibcxx_PCHFLAGS=""
fi
dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins
dnl
dnl This checks to see if the host supports the compiler-generated
-dnl builtins for atomic operations. Note, this is intended to be an
-dnl all-or-nothing switch, so all the atomic operations that are used
-dnl should be checked.
+dnl builtins for atomic operations for various integral sizes. Note, this
+dnl is intended to be an all-or-nothing switch, so all the atomic operations
+dnl that are used should be checked.
dnl
dnl Note:
dnl libgomp and libgfortran do this with a link test, instead of an asm test.
dnl see: CHECK_SYNC_FETCH_AND_ADD
dnl
dnl Defines:
-dnl _GLIBCXX_ATOMIC_BUILTINS if the compiler on this target supports atomics.
+dnl _GLIBCXX_ATOMIC_BUILTINS_1
+dnl _GLIBCXX_ATOMIC_BUILTINS_4
dnl
AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
- AC_MSG_CHECKING([for atomic builtins])
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
+ old_CXXFLAGS="$CXXFLAGS"
+
+ # Compile unoptimized.
+ CXXFLAGS='-O0 -S'
+
+ # Fake what AC_TRY_COMPILE does, without linking as this is
+ # unnecessary for a builtins test.
- # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
cat > conftest.$ac_ext << EOF
[#]line __oline__ "configure"
int main()
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
- if (__sync_fetch_and_add(&c1, c2) == c3)
- {
- // Do something.
- }
- return 0;
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();
+ return 0;
}
EOF
- old_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS=-S
+
+ AC_MSG_CHECKING([for atomic builtins for int])
if AC_TRY_EVAL(ac_compile); then
- if grep __sync_fetch_and_add conftest.s >/dev/null 2>&1 ; then
- enable_atomic_builtins=no
+ if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ enable_atomic_builtinsi=no
else
- AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1,
- [Define if builtin atomic operations are supported on this host.])
- enable_atomic_builtins=yes
- atomicity_dir=cpu/generic/atomicity_builtins
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
+ [Define if builtin atomic operations for int are supported on this host.])
+ enable_atomic_builtinsi=yes
fi
fi
- CXXFLAGS="$old_CXXFLAGS"
+ AC_MSG_RESULT($enable_atomic_builtinsi)
rm -f conftest*
- # Now, if still generic, set to mutex.
+ cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+int main()
+{
+ typedef bool atomic_type;
+ atomic_type c1;
+ atomic_type c2;
+ const atomic_type c3(0);
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();
+ return 0;
+}
+EOF
+
+ AC_MSG_CHECKING([for atomic builtins for bool])
+ if AC_TRY_EVAL(ac_compile); then
+ if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ enable_atomic_builtinsb=no
+ else
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
+ [Define if builtin atomic operations for bool are supported on this host.])
+ enable_atomic_builtinsb=yes
+ fi
+ fi
+ AC_MSG_RESULT($enable_atomic_builtinsb)
+ rm -f conftest*
+
+ CXXFLAGS="$old_CXXFLAGS"
+ AC_LANG_RESTORE
+
+ # Set atomicity_dir to builtins if either of above tests pass.
+ if test $enable_atomic_builtinsi = yes || test $enable_atomic_builtinsb = yes ; then
+ atomicity_dir=cpu/generic/atomicity_builtins
+ fi
+
+ # If still generic, set to mutex.
if test $atomicity_dir = "cpu/generic" ; then
- atomicity_dir=cpu/generic/atomicity_mutex
+ atomicity_dir=cpu/generic/atomicity_mutex
+ AC_MSG_WARN([No native atomic operations are provided for this platform.])
+ if test $target_thread_file = single; then
+ AC_MSG_WARN([They cannot be faked when thread support is disabled.])
+ AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.])
+ else
+ AC_MSG_WARN([They will be faked using a mutex.])
+ AC_MSG_WARN([Performance of certain classes will degrade as a result.])
+ fi
fi
- AC_LANG_RESTORE
- AC_MSG_RESULT($enable_atomic_builtins)
+
])
dnl all hail libgfortran
dnl Check whether the target supports hidden visibility.
AC_CACHE_CHECK([whether the target supports hidden visibility],
- have_attribute_visibility, [
+ glibcxx_cv_have_attribute_visibility, [
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror"
AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }],
- [], have_attribute_visibility=yes,
- have_attribute_visibility=no)
+ [], glibcxx_cv_have_attribute_visibility=yes,
+ glibcxx_cv_have_attribute_visibility=no)
CFLAGS="$save_CFLAGS"])
- if test $have_attribute_visibility = no; then
+ if test $glibcxx_cv_have_attribute_visibility = no; then
enable_visibility=no
fi
fi
AC_MSG_WARN([=== you are not using the GNU linker.])
AC_MSG_WARN([=== Symbol versioning will be disabled.])
enable_symvers=no
+ elif test $glibcxx_ld_is_gold = yes ; then
+ : All versions of gold support symbol versioning.
elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then
# The right tools, the right setup, but too old. Fallbacks?
AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
# be used in projects which are not available under the GNU Public License
# but which still want to provide support for the GNU gettext functionality.
# Please note that the actual code is *not* freely available.
-
-# serial 1
AC_DEFUN([AC_LC_MESSAGES], [
AC_CHECK_HEADER(locale.h, [
AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
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