# 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 libsupc++ python src src/c++98 src/c++11 doc po testsuite])
+ m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/filesystem doc po testsuite python])
SUBDIRS='glibcxx_SUBDIRS'
# These need to be absolute paths, yet at the same time need to
])
+dnl
+dnl Check if the assembler used supports disabling generation of hardware
+dnl capabilities. This is only supported by Sun as at the moment.
+dnl
+dnl Defines:
+dnl HWCAP_FLAGS='-Wa,-nH' if possible.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_ASSEMBLER_HWCAP], [
+ test -z "$HWCAP_FLAGS" && HWCAP_FLAGS=''
+
+ # Restrict the test to Solaris, other assemblers (e.g. AIX as) have -nH
+ # with a different meaning.
+ case ${target_os} in
+ solaris2*)
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Wa,-nH"
+
+ AC_MSG_CHECKING([for as that supports -Wa,-nH])
+ AC_TRY_COMPILE([], [return 0;], [ac_hwcap_flags=yes],[ac_hwcap_flags=no])
+ if test "$ac_hwcap_flags" = "yes"; then
+ HWCAP_FLAGS="-Wa,-nH $HWCAP_FLAGS"
+ fi
+ AC_MSG_RESULT($ac_hwcap_flags)
+
+ CFLAGS="$ac_save_CFLAGS"
+ ;;
+ esac
+
+ AC_SUBST(HWCAP_FLAGS)
+])
+
+
dnl
dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
dnl the native linker is in use, all variables will be defined to something
glibcxx_local_stylesheets=yes
XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/docbook-xsl-ns
fi
+ if test -d /usr/share/xml/docbook/stylesheet/nwalsh5/current; then
+ glibcxx_local_stylesheets=yes
+ XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/nwalsh5/current
+ fi
fi
AC_MSG_RESULT($glibcxx_local_stylesheets)
dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
dnl
-dnl See docs/html/17_intro/configury.html#enable for documentation.
+dnl See manual/appendix_porting.html#appendix.porting.build_hacking for
+dnl documentation.
dnl
m4_define([GLIBCXX_ENABLE],[dnl
m4_define([_g_switch],[--enable-$1])dnl
GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])
if test x"$enable_c99" = x"yes"; then
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
+ # Use -std=c++98 (instead of -std=gnu++98) because leaving __STRICT_ANSI__
+ # undefined may cause fake C99 facilities, like pre-standard snprintf,
+ # to be spuriously enabled.
+ 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="$LIBS -lm"], [
+ # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK
+ gcc_no_link=yes
+ ])
+ fi
- # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
- # undefined and fake C99 facilities - like pre-standard snprintf - may be
- # spuriously enabled.
- # Long term, -std=c++0x could be even better, could manage to explicitely
- # request C99 facilities to the underlying C headers.
- ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS="$CXXFLAGS -std=c++98"
- ac_save_LIBS="$LIBS"
- ac_save_gcc_no_link="$gcc_no_link"
+ # Check for the existence of <math.h> functions used if C99 is enabled.
+ AC_MSG_CHECKING([for ISO C99 support in <math.h> for C++98])
+ AC_CACHE_VAL(glibcxx_cv_c99_math_cxx98, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <math.h>
+ volatile double d1, d2;
+ volatile int i;],
+ [i = fpclassify(d1);
+ i = isfinite(d1);
+ i = isinf(d1);
+ i = isnan(d1);
+ i = isnormal(d1);
+ i = signbit(d1);
+ i = isgreater(d1, d2);
+ i = isgreaterequal(d1, d2);
+ i = isless(d1, d2);
+ i = islessequal(d1, d2);
+ i = islessgreater(d1, d2);
+ i = islessgreater(d1, d2);
+ i = isunordered(d1, d2);
+ ], [glibcxx_cv_c99_math_cxx98=yes], [glibcxx_cv_c99_math_cxx98=no])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_c99_math_cxx98)
+ if test x"$glibcxx_cv_c99_math_cxx98" = x"yes"; then
+ AC_DEFINE(_GLIBCXX98_USE_C99_MATH, 1,
+ [Define if C99 functions or macros in <math.h> should be imported
+ in <cmath> in namespace std for C++98.])
+ fi
- if test x$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
+ # Check for the existence of <complex.h> complex math functions.
+ # This is necessary even though libstdc++ uses the builtin versions
+ # of these functions, because if the builtin cannot be used, a reference
+ # 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)
+ if test x"$ac_has_complex_h" = x"yes"; then
+ AC_MSG_CHECKING([for ISO C99 support in <complex.h> for C++98])
+ AC_CACHE_VAL(glibcxx_cv_c99_complex_cxx98, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <complex.h>
+ typedef __complex__ float float_type;
+ typedef __complex__ double double_type;
+ typedef __complex__ long double ld_type;
+ volatile float_type tmpf;
+ volatile double_type tmpd;
+ volatile ld_type tmpld;
+ volatile float f;
+ volatile double d;
+ volatile long double ld;],
+ [f = cabsf(tmpf);
+ f = cargf(tmpf);
+ tmpf = ccosf(tmpf);
+ tmpf = ccoshf(tmpf);
+ tmpf = cexpf(tmpf);
+ tmpf = clogf(tmpf);
+ tmpf = csinf(tmpf);
+ tmpf = csinhf(tmpf);
+ tmpf = csqrtf(tmpf);
+ tmpf = ctanf(tmpf);
+ tmpf = ctanhf(tmpf);
+ tmpf = cpowf(tmpf, tmpf);
+ tmpf = cprojf(tmpf);
+ d = cabs(tmpd);
+ d = carg(tmpd);
+ tmpd = ccos(tmpd);
+ tmpd = ccosh(tmpd);
+ tmpd = cexp(tmpd);
+ tmpd = clog(tmpd);
+ tmpd = csin(tmpd);
+ tmpd = csinh(tmpd);
+ tmpd = csqrt(tmpd);
+ tmpd = ctan(tmpd);
+ tmpd = ctanh(tmpd);
+ tmpd = cpow(tmpd, tmpd);
+ tmpd = cproj(tmpd);
+ ld = cabsl(tmpld);
+ ld = cargl(tmpld);
+ tmpld = ccosl(tmpld);
+ tmpld = ccoshl(tmpld);
+ tmpld = cexpl(tmpld);
+ tmpld = clogl(tmpld);
+ tmpld = csinl(tmpld);
+ tmpld = csinhl(tmpld);
+ tmpld = csqrtl(tmpld);
+ tmpld = ctanl(tmpld);
+ tmpld = ctanhl(tmpld);
+ tmpld = cpowl(tmpld, tmpld);
+ tmpld = cprojl(tmpld);
+ ], [glibcxx_cv_c99_complex_cxx98=yes], [glibcxx_cv_c99_complex_cxx98=no])
+ ])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_c99_complex_cxx98)
+ if test x"$glibcxx_cv_c99_complex_cxx98" = x"yes"; then
+ AC_DEFINE(_GLIBCXX98_USE_C99_COMPLEX, 1,
+ [Define if C99 functions in <complex.h> should be used in
+ <complex> for C++98. Using compiler builtins for these functions
+ requires corresponding C99 library functions to be present.])
+ fi
+
+ # Check for the existence in <stdio.h> of vscanf, et. al.
+ AC_MSG_CHECKING([for ISO C99 support in <stdio.h> for C++98])
+ AC_CACHE_VAL(glibcxx_cv_c99_stdio_cxx98, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <stdio.h>
+ #include <stdarg.h>
+ void foo(char* fmt, ...)
+ {
+ va_list args; va_start(args, fmt);
+ vfscanf(stderr, "%i", args);
+ vscanf("%i", args);
+ vsnprintf(fmt, 0, "%i", args);
+ vsscanf(fmt, "%i", args);
+ snprintf(fmt, 0, "%i");
+ }], [],
+ [glibcxx_cv_c99_stdio_cxx98=yes], [glibcxx_cv_c99_stdio_cxx98=no])
])
- fi
+ AC_MSG_RESULT($glibcxx_cv_c99_stdio_cxx98)
+ if test x"$glibcxx_cv_c99_stdio_cxx98" = x"yes"; then
+ AC_DEFINE(_GLIBCXX98_USE_C99_STDIO, 1,
+ [Define if C99 functions or macros in <stdio.h> should be imported
+ in <cstdio> in namespace std for C++98.])
+ fi
- # Check for the existence of <math.h> functions used if C99 is enabled.
- AC_MSG_CHECKING([for ISO C99 support in <math.h>])
- AC_CACHE_VAL(glibcxx_cv_c99_math, [
- GCC_TRY_COMPILE_OR_LINK(
- [#include <math.h>
- volatile double d1, d2;
- volatile int i;],
- [i = fpclassify(d1);
- i = isfinite(d1);
- i = isinf(d1);
- i = isnan(d1);
- i = isnormal(d1);
- i = signbit(d1);
- i = isgreater(d1, d2);
- i = isgreaterequal(d1, d2);
- i = isless(d1, d2);
- i = islessequal(d1, d2);
- i = islessgreater(d1, d2);
- i = islessgreater(d1, d2);
- i = isunordered(d1, d2);
- ],[glibcxx_cv_c99_math=yes], [glibcxx_cv_c99_math=no])
- ])
- AC_MSG_RESULT($glibcxx_cv_c99_math)
- if test x"$glibcxx_cv_c99_math" = x"yes"; then
- AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1,
- [Define if C99 functions or macros in <math.h> should be imported
- in <cmath> in namespace std.])
- fi
+ # Check for the existence in <stdlib.h> of lldiv_t, et. al.
+ AC_MSG_CHECKING([for ISO C99 support in <stdlib.h> for C++98])
+ AC_CACHE_VAL(glibcxx_cv_c99_stdlib_cxx98, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <stdlib.h>
+ volatile float f;
+ volatile long double ld;
+ volatile unsigned long long ll;
+ lldiv_t mydivt;],
+ [char* tmp;
+ f = strtof("gnu", &tmp);
+ ld = strtold("gnu", &tmp);
+ ll = strtoll("gnu", &tmp, 10);
+ ll = strtoull("gnu", &tmp, 10);
+ ll = llabs(10);
+ mydivt = lldiv(10,1);
+ ll = mydivt.quot;
+ ll = mydivt.rem;
+ ll = atoll("10");
+ _Exit(0);
+ ], [glibcxx_cv_c99_stdlib_cxx98=yes], [glibcxx_cv_c99_stdlib_cxx98=no])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_c99_stdlib_cxx98)
+ if test x"$glibcxx_cv_c99_stdlib_cxx98" = x"yes"; then
+ AC_DEFINE(_GLIBCXX98_USE_C99_STDLIB, 1,
+ [Define if C99 functions or macros in <stdlib.h> should be imported
+ in <cstdlib> in namespace std for C++98.])
+ fi
- # Check for the existence of <complex.h> complex math functions.
- # This is necessary even though libstdc++ uses the builtin versions
- # of these functions, because if the builtin cannot be used, a reference
- # to the library function is emitted.
- AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no)
- AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
- glibcxx_cv_c99_complex=no;
- if test x"$ac_has_complex_h" = x"yes"; then
- AC_MSG_CHECKING([for ISO C99 support in <complex.h>])
- 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
- corresponding C99 library functions to be present.])
- fi
-
- # Check for the existence in <stdio.h> of vscanf, et. al.
- AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
- 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($glibcxx_cv_c99_stdio)
-
- # Check for the existence in <stdlib.h> of lldiv_t, et. al.
- AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
- AC_CACHE_VAL(glibcxx_cv_c99_stdlib, [
- GCC_TRY_COMPILE_OR_LINK(
- [#include <stdlib.h>
- volatile float f;
- volatile long double ld;
- volatile unsigned long long ll;
- lldiv_t mydivt;],
- [char* tmp;
- f = strtof("gnu", &tmp);
- ld = strtold("gnu", &tmp);
- ll = strtoll("gnu", &tmp, 10);
- ll = strtoull("gnu", &tmp, 10);
- ll = llabs(10);
- mydivt = lldiv(10,1);
- ll = mydivt.quot;
- ll = mydivt.rem;
- ll = atoll("10");
- _Exit(0);
- ],[glibcxx_cv_c99_stdlib=yes], [glibcxx_cv_c99_stdlib=no])
- ])
- AC_MSG_RESULT($glibcxx_cv_c99_stdlib)
-
- # Check for the existence in <wchar.h> of wcstold, etc.
- 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>])
- AC_TRY_COMPILE([#include <wchar.h>
- namespace test
- {
- using ::wcstold;
- using ::wcstoll;
- using ::wcstoull;
- }
- ],[],[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.
- # NB: only put functions here, instead of immediately above, if
- # absolutely necessary.
- AC_TRY_COMPILE([#include <wchar.h>
- namespace test { using ::vfwscanf; } ], [],
- [AC_DEFINE(HAVE_VFWSCANF,1,
- [Defined if vfwscanf exists.])],[])
-
- AC_TRY_COMPILE([#include <wchar.h>
- namespace test { using ::vswscanf; } ], [],
- [AC_DEFINE(HAVE_VSWSCANF,1,
- [Defined if vswscanf exists.])],[])
-
- AC_TRY_COMPILE([#include <wchar.h>
- namespace test { using ::vwscanf; } ], [],
- [AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[])
-
- AC_TRY_COMPILE([#include <wchar.h>
- namespace test { using ::wcstof; } ], [],
- [AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[])
-
- AC_TRY_COMPILE([#include <wctype.h>],
- [ wint_t t; int i = iswblank(t);],
- [AC_DEFINE(HAVE_ISWBLANK,1,
- [Defined if iswblank exists.])],[])
-
- AC_MSG_RESULT($glibcxx_cv_c99_wchar)
- fi
-
- # Option parsed, now set things appropriately.
- if test x"$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,
- [Define if C99 functions or macros from <wchar.h>, <math.h>,
- <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.])
- fi
+ # Check for the existence in <wchar.h> of wcstold, etc.
+ 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> for C++98])
+ AC_CACHE_VAL(glibcxx_cv_c99_wchar_cxx98, [
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test
+ {
+ using ::wcstold;
+ using ::wcstoll;
+ using ::wcstoull;
+ }
+ ], [], [glibcxx_cv_c99_wchar_cxx98=yes], [glibcxx_cv_c99_wchar_cxx98=no])
+ ])
- gcc_no_link="$ac_save_gcc_no_link"
- LIBS="$ac_save_LIBS"
- CXXFLAGS="$ac_save_CXXFLAGS"
- AC_LANG_RESTORE
+ # Checks for wide character functions that may not be present.
+ # Injection of these is wrapped with guard macros.
+ # NB: only put functions here, instead of immediately above, if
+ # absolutely necessary.
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::vfwscanf; }], [],
+ [AC_DEFINE(HAVE_VFWSCANF, 1, [Defined if vfwscanf exists.])], [])
+
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::vswscanf; }], [],
+ [AC_DEFINE(HAVE_VSWSCANF, 1, [Defined if vswscanf exists.])], [])
+
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::vwscanf; }], [],
+ [AC_DEFINE(HAVE_VWSCANF, 1, [Defined if vwscanf exists.])], [])
+
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::wcstof; }], [],
+ [AC_DEFINE(HAVE_WCSTOF, 1, [Defined if wcstof exists.])], [])
+
+ AC_TRY_COMPILE([#include <wctype.h>],
+ [wint_t t; int i = iswblank(t);],
+ [AC_DEFINE(HAVE_ISWBLANK, 1, [Defined if iswblank exists.])], [])
+
+ AC_MSG_RESULT($glibcxx_cv_c99_wchar_cxx98)
+ if test x"$glibcxx_cv_c99_wchar_cxx98" = x"yes"; then
+ AC_DEFINE(_GLIBCXX98_USE_C99_WCHAR, 1,
+ [Define if C99 functions or macros in <wchar.h> should be imported
+ in <cwchar> in namespace std for C++98.])
+ fi
+ fi
+
+ # Option parsed, now set things appropriately.
+ if test x"$glibcxx_cv_c99_math_cxx98" = x"no" ||
+ test x"$glibcxx_cv_c99_complex_cxx98" = x"no" ||
+ test x"$glibcxx_cv_c99_stdio_cxx98" = x"no" ||
+ test x"$glibcxx_cv_c99_stdlib_cxx98" = x"no" ||
+ test x"$glibcxx_cv_c99_wchar_cxx98" = x"no"; then
+ enable_c99=no;
+ else
+ AC_DEFINE(_GLIBCXX_USE_C99, 1,
+ [Define if C99 functions or macros from <wchar.h>, <math.h>,
+ <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="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+
+ # Use -std=c++11 and test again for C99 library feature in C++11 mode.
+ # For the reasons given above we use -std=c++11 not -std=gnu++11.
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -std=c++11"
+ ac_save_LIBS="$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> for C++11])
+ AC_CACHE_VAL(glibcxx_cv_c99_math_cxx11, [
+ 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_cxx11=yes], [glibcxx_cv_c99_math_cxx11=no])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_c99_math_cxx11)
+ if test x"$glibcxx_cv_c99_math_cxx11" = x"yes"; then
+ AC_DEFINE(_GLIBCXX11_USE_C99_MATH, 1,
+ [Define if C99 functions or macros in <math.h> should be imported
+ in <cmath> in namespace std for C++11.])
+ fi
+
+ # Check for the existence of <complex.h> complex math functions.
+ # This is necessary even though libstdc++ uses the builtin versions
+ # of these functions, because if the builtin cannot be used, a reference
+ # 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)
+ if test x"$ac_has_complex_h" = x"yes"; then
+ AC_MSG_CHECKING([for ISO C99 support in <complex.h> for C++11])
+ AC_CACHE_VAL(glibcxx_cv_c99_complex_cxx11, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <complex.h>
+ typedef __complex__ float float_type;
+ typedef __complex__ double double_type;
+ typedef __complex__ long double ld_type;
+ volatile float_type tmpf;
+ volatile double_type tmpd;
+ volatile ld_type tmpld;
+ volatile float f;
+ volatile double d;
+ volatile long double ld;],
+ [f = cabsf(tmpf);
+ f = cargf(tmpf);
+ tmpf = ccosf(tmpf);
+ tmpf = ccoshf(tmpf);
+ tmpf = cexpf(tmpf);
+ tmpf = clogf(tmpf);
+ tmpf = csinf(tmpf);
+ tmpf = csinhf(tmpf);
+ tmpf = csqrtf(tmpf);
+ tmpf = ctanf(tmpf);
+ tmpf = ctanhf(tmpf);
+ tmpf = cpowf(tmpf, tmpf);
+ tmpf = cprojf(tmpf);
+ d = cabs(tmpd);
+ d = carg(tmpd);
+ tmpd = ccos(tmpd);
+ tmpd = ccosh(tmpd);
+ tmpd = cexp(tmpd);
+ tmpd = clog(tmpd);
+ tmpd = csin(tmpd);
+ tmpd = csinh(tmpd);
+ tmpd = csqrt(tmpd);
+ tmpd = ctan(tmpd);
+ tmpd = ctanh(tmpd);
+ tmpd = cpow(tmpd, tmpd);
+ tmpd = cproj(tmpd);
+ ld = cabsl(tmpld);
+ ld = cargl(tmpld);
+ tmpld = ccosl(tmpld);
+ tmpld = ccoshl(tmpld);
+ tmpld = cexpl(tmpld);
+ tmpld = clogl(tmpld);
+ tmpld = csinl(tmpld);
+ tmpld = csinhl(tmpld);
+ tmpld = csqrtl(tmpld);
+ tmpld = ctanl(tmpld);
+ tmpld = ctanhl(tmpld);
+ tmpld = cpowl(tmpld, tmpld);
+ tmpld = cprojl(tmpld);
+ ], [glibcxx_cv_c99_complex_cxx11=yes], [glibcxx_cv_c99_complex_cxx11=no])
+ ])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_c99_complex_cxx11)
+ if test x"$glibcxx_cv_c99_complex_cxx11" = x"yes"; then
+ AC_DEFINE(_GLIBCXX11_USE_C99_COMPLEX, 1,
+ [Define if C99 functions in <complex.h> should be used in
+ <complex> for C++11. Using compiler builtins for these functions
+ requires corresponding C99 library functions to be present.])
+ fi
+
+ # Check for the existence in <stdio.h> of vscanf, et. al.
+ AC_MSG_CHECKING([for ISO C99 support in <stdio.h> for C++11])
+ AC_CACHE_VAL(glibcxx_cv_c99_stdio_cxx11, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <stdio.h>
+ #include <stdarg.h>
+ void foo(char* fmt, ...)
+ {
+ va_list args; va_start(args, fmt);
+ vfscanf(stderr, "%i", args);
+ vscanf("%i", args);
+ vsnprintf(fmt, 0, "%i", args);
+ vsscanf(fmt, "%i", args);
+ snprintf(fmt, 0, "%i");
+ }], [],
+ [glibcxx_cv_c99_stdio_cxx11=yes], [glibcxx_cv_c99_stdio_cxx11=no])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_c99_stdio_cxx11)
+ if test x"$glibcxx_cv_c99_stdio_cxx11" = x"yes"; then
+ AC_DEFINE(_GLIBCXX11_USE_C99_STDIO, 1,
+ [Define if C99 functions or macros in <stdio.h> should be imported
+ in <cstdio> in namespace std for C++11.])
+ fi
+
+ # Check for the existence in <stdlib.h> of lldiv_t, et. al.
+ AC_MSG_CHECKING([for ISO C99 support in <stdlib.h> for C++11])
+ AC_CACHE_VAL(glibcxx_cv_c99_stdlib_cxx11, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <stdlib.h>
+ volatile float f;
+ volatile long double ld;
+ volatile unsigned long long ll;
+ lldiv_t mydivt;],
+ [char* tmp;
+ f = strtof("gnu", &tmp);
+ ld = strtold("gnu", &tmp);
+ ll = strtoll("gnu", &tmp, 10);
+ ll = strtoull("gnu", &tmp, 10);
+ ll = llabs(10);
+ mydivt = lldiv(10,1);
+ ll = mydivt.quot;
+ ll = mydivt.rem;
+ ll = atoll("10");
+ _Exit(0);
+ ], [glibcxx_cv_c99_stdlib_cxx11=yes], [glibcxx_cv_c99_stdlib_cxx11=no])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_c99_stdlib_cxx11)
+ if test x"$glibcxx_cv_c99_stdlib_cxx11" = x"yes"; then
+ AC_DEFINE(_GLIBCXX11_USE_C99_STDLIB, 1,
+ [Define if C99 functions or macros in <stdlib.h> should be imported
+ in <cstdlib> in namespace std for C++11.])
+ fi
+
+ # Check for the existence in <wchar.h> of wcstold, etc.
+ if test x"$ac_has_wchar_h" = xyes &&
+ test x"$ac_has_wctype_h" = xyes; then
+ AC_MSG_CHECKING([for ISO C99 support in <wchar.h> for C++11])
+ AC_CACHE_VAL(glibcxx_cv_c99_wchar_cxx11, [
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test
+ {
+ using ::wcstold;
+ using ::wcstoll;
+ using ::wcstoull;
+ }
+ ], [], [glibcxx_cv_c99_wchar_cxx11=yes], [glibcxx_cv_c99_wchar_cxx11=no])
+ ])
+
+ # Checks for wide character functions that may not be present.
+ # Injection of these is wrapped with guard macros.
+ # NB: only put functions here, instead of immediately above, if
+ # absolutely necessary.
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::vfwscanf; }], [],
+ [AC_DEFINE(HAVE_VFWSCANF, 1, [Defined if vfwscanf exists.])], [])
+
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::vswscanf; }], [],
+ [AC_DEFINE(HAVE_VSWSCANF, 1, [Defined if vswscanf exists.])], [])
+
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::vwscanf; }], [],
+ [AC_DEFINE(HAVE_VWSCANF, 1, [Defined if vwscanf exists.])], [])
+
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::wcstof; }], [],
+ [AC_DEFINE(HAVE_WCSTOF, 1, [Defined if wcstof exists.])], [])
+
+ AC_TRY_COMPILE([#include <wctype.h>],
+ [wint_t t; int i = iswblank(t);],
+ [AC_DEFINE(HAVE_ISWBLANK, 1, [Defined if iswblank exists.])], [])
+
+ AC_MSG_RESULT($glibcxx_cv_c99_wchar_cxx11)
+ if test x"$glibcxx_cv_c99_wchar_cxx11" = x"yes"; then
+ AC_DEFINE(_GLIBCXX11_USE_C99_WCHAR, 1,
+ [Define if C99 functions or macros in <wchar.h> should be imported
+ in <cwchar> in namespace std for C++11.])
+ fi
+ fi
+
+ gcc_no_link="$ac_save_gcc_no_link"
+ LIBS="$ac_save_LIBS"
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
fi
AC_MSG_CHECKING([for fully enabled ISO C99 support])
dnl links in the latter.
dnl --enable-libstdcxx-time=rt
dnl also searches (and, if needed, links) librt. Note that this is
-dnl not always desirable because, in glibc, for example, in turn it
-dnl triggers the linking of libpthread too, which activates locking,
+dnl not always desirable because, in glibc 2.16 and earlier, for
+dnl example, in turn it triggers the linking of libpthread too,
+dnl which activates locking,
dnl a large overhead for single-thread programs.
dnl --enable-libstdcxx-time=no
dnl --disable-libstdcxx-time
dnl disables the checks completely
dnl
+dnl N.B. Darwin provides nanosleep but doesn't support the whole POSIX
+dnl Timers option, so doesn't define _POSIX_TIMERS. Because the test
+dnl below fails Darwin unconditionally defines _GLIBCXX_USE_NANOSLEEP in
+dnl os_defines.h and also defines _GLIBCXX_USE_SCHED_YIELD.
+dnl
AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
- AC_MSG_CHECKING([for clock_gettime, nanosleep and sched_yield])
- GLIBCXX_ENABLE(libstdcxx-time,$1,[[[=KIND]]],
+ GLIBCXX_ENABLE(libstdcxx-time,auto,[[[=KIND]]],
[use KIND for check type],
[permit yes|no|rt])
ac_has_clock_monotonic=no
ac_has_clock_realtime=no
- AC_MSG_RESULT($enable_libstdcxx_time)
+ ac_has_nanosleep=no
+ ac_has_sched_yield=no
+
+ if test x"$enable_libstdcxx_time" = x"auto"; then
+
+ case "${target_os}" in
+ cygwin*)
+ ac_has_nanosleep=yes
+ ;;
+ darwin*)
+ ac_has_nanosleep=yes
+ ac_has_sched_yield=yes
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+ AC_MSG_CHECKING([for at least GNU libc 2.17])
+ AC_TRY_COMPILE(
+ [#include <features.h>],
+ [
+ #if ! __GLIBC_PREREQ(2, 17)
+ #error
+ #endif
+ ],
+ [glibcxx_glibc217=yes], [glibcxx_glibc217=no])
+ AC_MSG_RESULT($glibcxx_glibc217)
+
+ if test x"$glibcxx_glibc217" = x"yes"; then
+ ac_has_clock_monotonic=yes
+ ac_has_clock_realtime=yes
+ fi
+ ac_has_nanosleep=yes
+ ac_has_sched_yield=yes
+ ;;
+ freebsd*|netbsd*|dragonfly*)
+ ac_has_clock_monotonic=yes
+ ac_has_clock_realtime=yes
+ ac_has_nanosleep=yes
+ ac_has_sched_yield=yes
+ ;;
+ openbsd*)
+ ac_has_clock_monotonic=yes
+ ac_has_clock_realtime=yes
+ ac_has_nanosleep=yes
+ ;;
+ solaris*)
+ GLIBCXX_LIBS="$GLIBCXX_LIBS -lrt"
+ ac_has_clock_monotonic=yes
+ ac_has_clock_realtime=yes
+ ac_has_nanosleep=yes
+ ac_has_sched_yield=yes
+ ;;
+ esac
- if test x"$enable_libstdcxx_time" != x"no"; then
+ elif test x"$enable_libstdcxx_time" != x"no"; then
if test x"$enable_libstdcxx_time" = x"rt"; then
AC_SEARCH_LIBS(clock_gettime, [rt posix4])
case "$ac_cv_search_sched_yield" in
-lposix4*)
GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
- AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
- [ Defined if sched_yield is available. ])
+ ac_has_sched_yield=yes
;;
-lrt*)
if test x"$enable_libstdcxx_time" = x"rt"; then
GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
- AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
- [ Defined if sched_yield is available. ])
+ ac_has_sched_yield=yes
fi
;;
*)
- AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
- [ Defined if sched_yield is available. ])
+ ac_has_sched_yield=yes
;;
esac
fi
fi
+ if test x"$ac_has_clock_monotonic" != x"yes"; then
+ case ${target_os} in
+ linux*)
+ AC_MSG_CHECKING([for clock_gettime syscall])
+ AC_TRY_COMPILE(
+ [#include <unistd.h>
+ #include <time.h>
+ #include <sys/syscall.h>
+ ],
+ [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
+ timespec tp;
+ #endif
+ syscall(SYS_clock_gettime, CLOCK_MONOTONIC, &tp);
+ syscall(SYS_clock_gettime, CLOCK_REALTIME, &tp);
+ ], [ac_has_clock_monotonic_syscall=yes], [ac_has_clock_monotonic_syscall=no])
+ AC_MSG_RESULT($ac_has_clock_monotonic_syscall)
+ if test x"$ac_has_clock_monotonic_syscall" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_CLOCK_GETTIME_SYSCALL, 1,
+ [ Defined if clock_gettime syscall has monotonic and realtime clock support. ])
+ ac_has_clock_monotonic=yes
+ ac_has_clock_realtime=yes
+ fi;;
+ esac
+ fi
+
if test x"$ac_has_clock_monotonic" = x"yes"; then
AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1,
[ Defined if clock_gettime has monotonic clock support. ])
[ Defined if clock_gettime has realtime clock support. ])
fi
+ if test x"$ac_has_sched_yield" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
+ [ Defined if sched_yield is available. ])
+ fi
+
if test x"$ac_has_nanosleep" = x"yes"; then
AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1,
[ Defined if nanosleep is available. ])
+ else
+ AC_MSG_CHECKING([for sleep])
+ AC_TRY_COMPILE([#include <unistd.h>],
+ [sleep(1)],
+ [ac_has_sleep=yes],[ac_has_sleep=no])
+ if test x"$ac_has_sleep" = x"yes"; then
+ AC_DEFINE(HAVE_SLEEP,1, [Defined if sleep exists.])
+ fi
+ AC_MSG_RESULT($ac_has_sleep)
+ AC_MSG_CHECKING([for usleep])
+ AC_TRY_COMPILE([#include <unistd.h>],
+ [sleep(1);
+ usleep(100);],
+ [ac_has_usleep=yes],[ac_has_usleep=no])
+ if test x"$ac_has_usleep" = x"yes"; then
+ AC_DEFINE(HAVE_USLEEP,1, [Defined if usleep exists.])
+ fi
+ AC_MSG_RESULT($ac_has_usleep)
+ fi
+
+ if test x"$ac_has_nanosleep$ac_has_sleep" = x"nono"; then
+ AC_MSG_CHECKING([for Sleep])
+ AC_TRY_COMPILE([#include <windows.h>],
+ [Sleep(1)],
+ [ac_has_win32_sleep=yes],[ac_has_win32_sleep=no])
+ if test x"$ac_has_win32_sleep" = x"yes"; then
+ AC_DEFINE(HAVE_WIN32_SLEEP,1, [Defined if Sleep exists.])
+ fi
+ AC_MSG_RESULT($ac_has_win32_sleep)
fi
AC_SUBST(GLIBCXX_LIBS)
<tr1/cinttypes> in namespace std::tr1.])
fi
- # Check for the existence of whcar_t <inttypes.h> functions (NB: doesn't
+ # Check for the existence of wchar_t <inttypes.h> functions (NB: doesn't
# make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
ac_c99_inttypes_wchar_t_tr1=no;
if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
AC_LANG_RESTORE
])
+dnl
+dnl Check for uchar.h and usability.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_UCHAR_H], [
+
+ # Test uchar.h.
+ AC_CHECK_HEADERS(uchar.h, ac_has_uchar_h=yes, ac_has_uchar_h=no)
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -std=c++11"
+
+ if test x"$ac_has_uchar_h" = x"yes"; then
+ AC_MSG_CHECKING([for ISO C11 support for <uchar.h>])
+ AC_TRY_COMPILE([#include <uchar.h>
+ #ifdef __STDC_UTF_16__
+ long i = __STDC_UTF_16__;
+ #endif
+ #ifdef __STDC_UTF_32__
+ long j = __STDC_UTF_32__;
+ #endif
+ namespace test
+ {
+ using ::c16rtomb;
+ using ::c32rtomb;
+ using ::mbrtoc16;
+ using ::mbrtoc32;
+ }
+ ],
+ [], [ac_c11_uchar_cxx11=yes], [ac_c11_uchar_cxx11=no])
+ else
+ ac_c11_uchar_cxx11=no
+ fi
+ AC_MSG_RESULT($ac_c11_uchar_cxx11)
+ if test x"$ac_c11_uchar_cxx11" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_C11_UCHAR_CXX11, 1,
+ [Define if C11 functions in <uchar.h> should be imported into
+ namespace std in <cuchar>.])
+ fi
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
+
+
dnl
dnl Check whether "/dev/random" and "/dev/urandom" are available for the
dnl random_device of "TR1" (Chapter 5.1, "Random number generation").
AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for TR1 random_device])
AC_CACHE_VAL(glibcxx_cv_random_tr1, [
if test -r /dev/random && test -r /dev/urandom; then
- glibcxx_cv_random_tr1=yes;
+ ## For MSys environment the test above is detect as false-positive
+ ## on mingw-targets. So disable it explicit for them.
+ case ${target_os} in
+ *mingw*) glibcxx_cv_random_tr1=no ;;
+ *) glibcxx_cv_random_tr1=yes ;;
+ esac
else
glibcxx_cv_random_tr1=no;
fi
AC_LANG_RESTORE
])
+dnl
+dnl Check whether required C++11 overloads are present in <math.h>.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -std=c++11"
+
+ case "$host" in
+ *-*-solaris2.*)
+ # Solaris 12 introduced the C++11 <math.h> overloads. A backport to
+ # a Solaris 11.3 SRU is likely, maybe even a Solaris 10 patch.
+ AC_MSG_CHECKING([for C++11 <math.h> overloads])
+ AC_CACHE_VAL(glibcxx_cv_math11_overload, [
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+ [#include <math.h>
+ #undef isfinite
+ namespace std {
+ inline bool isfinite(float __x)
+ { return __builtin_isfinite(__x); }
+ }
+ ])],
+ [glibcxx_cv_math11_overload=no],
+ [glibcxx_cv_math11_overload=yes]
+ )])
+
+ # autoheader cannot handle indented templates.
+ AH_VERBATIM([__CORRECT_ISO_CPP11_MATH_H_PROTO],
+ [/* Define if all C++11 overloads are available in <math.h>. */
+#if __cplusplus >= 201103L
+#undef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#endif])
+
+ if test $glibcxx_cv_math11_overload = yes; then
+ AC_DEFINE(__CORRECT_ISO_CPP11_MATH_H_PROTO)
+ fi
+ AC_MSG_RESULT([$glibcxx_cv_math11_overload])
+ ;;
+ *-*-*gnu* | *-*-aix* | *-*-hpux*)
+ # If <math.h> defines the obsolete isinf(double) and isnan(double)
+ # functions (instead of or as well as the C99 generic macros) then we
+ # can't define std::isinf(double) and std::isnan(double) in <cmath>
+ # and must use the ones from <math.h> instead.
+ AC_MSG_CHECKING([for obsolete isinf function in <math.h>])
+ AC_CACHE_VAL(glibcxx_cv_obsolete_isinf, [
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+ [#include <math.h>
+ #undef isinf
+ namespace std {
+ using ::isinf;
+ bool isinf(float);
+ bool isinf(long double);
+ }
+ using std::isinf;
+ bool b = isinf(0.0);
+ ])],
+ [glibcxx_cv_obsolete_isinf=yes],
+ [glibcxx_cv_obsolete_isinf=no]
+ )])
+ AC_MSG_RESULT([$glibcxx_cv_obsolete_isinf])
+ if test $glibcxx_cv_obsolete_isinf = yes; then
+ AC_DEFINE(HAVE_OBSOLETE_ISINF, 1,
+ [Define if <math.h> defines obsolete isinf function.])
+ fi
+
+ AC_MSG_CHECKING([for obsolete isnan function in <math.h>])
+ AC_CACHE_VAL(glibcxx_cv_obsolete_isnan, [
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+ [#include <math.h>
+ #undef isnan
+ namespace std {
+ using ::isnan;
+ bool isnan(float);
+ bool isnan(long double);
+ }
+ using std::isnan;
+ bool b = isnan(0.0);
+ ])],
+ [glibcxx_cv_obsolete_isnan=yes],
+ [glibcxx_cv_obsolete_isnan=no]
+ )])
+ AC_MSG_RESULT([$glibcxx_cv_obsolete_isnan])
+ if test $glibcxx_cv_obsolete_isnan = yes; then
+ AC_DEFINE(HAVE_OBSOLETE_ISNAN, 1,
+ [Define if <math.h> defines obsolete isnan function.])
+ fi
+ ;;
+ esac
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
+
dnl
dnl Check whether macros, etc are present for <system_error>
dnl
linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
enable_clocale_flag=gnu
;;
- darwin* | freebsd*)
+ darwin*)
enable_clocale_flag=darwin
;;
+ dragonfly* | freebsd*)
+ enable_clocale_flag=dragonfly
+ ;;
+ openbsd*)
+ enable_clocale_flag=newlib
+ ;;
*)
if test x"$with_newlib" = x"yes"; then
enable_clocale_flag=newlib
CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
;;
darwin)
- AC_MSG_RESULT(darwin or freebsd)
+ AC_MSG_RESULT(darwin)
CLOCALE_H=config/locale/generic/c_locale.h
CLOCALE_CC=config/locale/generic/c_locale.cc
CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
;;
+ dragonfly)
+ AC_MSG_RESULT(dragonfly or freebsd)
+
+ CLOCALE_H=config/locale/dragonfly/c_locale.h
+ CLOCALE_CC=config/locale/dragonfly/c_locale.cc
+ CCODECVT_CC=config/locale/dragonfly/codecvt_members.cc
+ CCOLLATE_CC=config/locale/dragonfly/collate_members.cc
+ CCTYPE_CC=config/locale/dragonfly/ctype_members.cc
+ CMESSAGES_H=config/locale/generic/messages_members.h
+ CMESSAGES_CC=config/locale/generic/messages_members.cc
+ CMONEY_CC=config/locale/dragonfly/monetary_members.cc
+ CNUMERIC_CC=config/locale/dragonfly/numeric_members.cc
+ CTIME_H=config/locale/dragonfly/time_members.h
+ CTIME_CC=config/locale/dragonfly/time_members.cc
+ CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
+ ;;
+
gnu)
AC_MSG_RESULT(gnu)
;;
esac
+ GLIBCXX_CONDITIONAL(ENABLE_ALLOCATOR_NEW,
+ test $enable_libstdcxx_allocator_flag = new)
AC_SUBST(ALLOCATOR_H)
AC_SUBST(ALLOCATOR_NAME)
])
GLIBCXX_CONDITIONAL(ENABLE_EXTERN_TEMPLATE, test $enable_extern_template = yes)
])
+dnl
+dnl Use vtable verification.
+dnl
+dnl --enable-vtable-verify defines _GLIBCXX_VTABLE_VERIFY to 1
+dnl --disable-vtable-verify defines _GLIBCXX_VTABLE_VERIFY to 0
+
+dnl + Usage: GLIBCXX_ENABLE_VTABLE_VERIFY[(DEFAULT)]
+dnl Where DEFAULT is `yes' or `no'.
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_VTABLE_VERIFY], [
+
+ GLIBCXX_ENABLE(vtable-verify,$1,,[enable vtable verify])
+
+ AC_MSG_CHECKING([for vtable verify support])
+ AC_MSG_RESULT([$enable_vtable_verify])
+
+ vtv_cygmin=no
+ if test $enable_vtable_verify = yes; then
+ case ${target_os} in
+ cygwin*|mingw32*)
+ VTV_CXXFLAGS="-fvtable-verify=std -Wl,-lvtv,-u_vtable_map_vars_start,-u_vtable_map_vars_end"
+ VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,--rpath -Wl,${toplevel_builddir}/libvtv/.libs"
+ vtv_cygmin=yes
+ ;;
+ darwin*)
+ VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u,_vtable_map_vars_start -Wl,-u,_vtable_map_vars_end"
+ VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,-rpath,${toplevel_builddir}/libvtv/.libs"
+ ;;
+ solaris2*)
+ VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end"
+ VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,-R -Wl,${toplevel_builddir}/libvtv/.libs"
+ ;;
+ *)
+ VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end"
+ VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,--rpath -Wl,${toplevel_builddir}/libvtv/.libs"
+ ;;
+ esac
+ VTV_PCH_CXXFLAGS="-fvtable-verify=std"
+ else
+ VTV_CXXFLAGS=
+ VTV_PCH_CXXFLAGS=
+ VTV_CXXLINKFLAGS=
+ fi
+
+ AC_SUBST(VTV_CXXFLAGS)
+ AC_SUBST(VTV_PCH_CXXFLAGS)
+ AC_SUBST(VTV_CXXLINKFLAGS)
+ AM_CONDITIONAL(VTV_CYGMIN, test x$vtv_cygmin = xyes)
+ GLIBCXX_CONDITIONAL(ENABLE_VTABLE_VERIFY, test $enable_vtable_verify = yes)
+])
+
dnl
dnl Check for parallel mode pre-requisites, including OpenMP support.
dnl
AC_MSG_CHECKING([for parallel mode support])
AC_MSG_RESULT([$enable_parallel])
- GLIBCXX_CONDITIONAL(ENABLE_PARALLEL, test $enable_parallel = yes)
])
dnl
dnl --enable-libstdcxx-debug-flags='-O1'
dnl is a general method for passing flags to be used when
-dnl building debug libraries with --enable-debug.
+dnl building debug libraries with --enable-libstdcxx-debug.
dnl
dnl --disable-libstdcxx-debug-flags does nothing.
dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
])
+dnl
+dnl Check if the user wants a non-verbose library implementation.
+dnl
+dnl --disable-libstdcxx-verbose will turn off descriptive messages to
+dnl standard error on termination.
+dnl
+dnl Defines:
+dnl _GLIBCXX_VERBOSE (always defined, either to 1 or 0)
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_VERBOSE], [
+ AC_ARG_ENABLE([libstdcxx-verbose],
+ AC_HELP_STRING([--disable-libstdcxx-verbose],
+ [disable termination messages to standard error]),,
+ [enable_libstdcxx_verbose=yes])
+ if test x"$enable_libstdcxx_verbose" = xyes; then
+ verbose_define=1
+ else
+ AC_MSG_NOTICE([verbose termination messages are disabled])
+ verbose_define=0
+ fi
+ AC_DEFINE_UNQUOTED(_GLIBCXX_VERBOSE, $verbose_define,
+ [Define to 1 if a verbose library is built, or 0 otherwise.])
+])
+
+
dnl
dnl Check for template specializations for the 'long long' type.
dnl The result determines only whether 'long long' I/O is enabled; things
AC_LANG_RESTORE
# Set atomicity_dir to builtins if all but the long long test above passes.
- if test $glibcxx_cv_atomic_bool = yes \
- && test $glibcxx_cv_atomic_short = yes \
- && test $glibcxx_cv_atomic_int = yes; then
+ if test "$glibcxx_cv_atomic_bool" = yes \
+ && test "$glibcxx_cv_atomic_short" = yes \
+ && test "$glibcxx_cv_atomic_int" = yes; then
AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1,
[Define if the compiler supports C++11 atomics.])
atomicity_dir=cpu/generic/atomicity_builtins
])
-dnl
-dnl Check for exception handling support. If an explicit enable/disable
-dnl sjlj exceptions is given, we don't have to detect. Otherwise the
-dnl target may or may not support call frame exceptions.
-dnl
-dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
-dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
-dnl Neither one forces an attempt at detection.
-dnl
-dnl Defines:
-dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
-dnl
-AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [
- AC_MSG_CHECKING([for exception model to use])
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- GLIBCXX_ENABLE(sjlj-exceptions,auto,,
- [force use of builtin_setjmp for exceptions],
- [permit yes|no|auto])
-
- if test $enable_sjlj_exceptions = auto; then
- # Botheration. Now we've got to detect the exception model. Link tests
- # against libgcc.a are problematic since we've not been given proper -L
- # bits for single-tree newlib and libgloss.
- #
- # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
- cat > conftest.$ac_ext << EOF
-[#]line __oline__ "configure"
-struct S { ~S(); };
-void bar();
-void foo()
-{
- S s;
- bar();
-}
-EOF
- old_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS=-S
- if AC_TRY_EVAL(ac_compile); then
- if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
- enable_sjlj_exceptions=yes
- elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
- enable_sjlj_exceptions=no
- elif grep __cxa_end_cleanup conftest.s >/dev/null 2>&1 ; then
- enable_sjlj_exceptions=no
- fi
- fi
- CXXFLAGS="$old_CXXFLAGS"
- rm -f conftest*
- fi
-
- # This is a tad weird, for hysterical raisins. We have to map
- # enable/disable to two different models.
- case $enable_sjlj_exceptions in
- yes)
- AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
- [Define if the compiler is configured for setjmp/longjmp exceptions.])
- ac_exception_model_name=sjlj
- ;;
- no)
- ac_exception_model_name="call frame"
- ;;
- *)
- AC_MSG_ERROR([unable to detect exception model])
- ;;
- esac
- AC_LANG_RESTORE
- AC_MSG_RESULT($ac_exception_model_name)
-])
-
-
dnl
dnl Allow visibility attributes to be used on namespaces, objects, etc.
dnl
fi
# For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=6:17:0
+libtool_VERSION=6:22:0
# Everything parsed; figure out what files and settings to use.
case $enable_symvers in
dnl namespace are complex and fragile enough as it is). We must also
dnl add a relative path so that -I- is supported properly.
dnl
+dnl Substs:
+dnl thread_header
+dnl
AC_DEFUN([GLIBCXX_ENABLE_THREADS], [
AC_MSG_CHECKING([for thread model used by GCC])
target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
AC_MSG_RESULT([$target_thread_file])
+ GCC_AC_THREAD_HEADER([$target_thread_file])
])
#ifndef __GTHREADS_CXX0X
#error
#endif
- ], [case $target_os in
- # gthreads support breaks symbol versioning on Solaris 9 (PR
- # libstdc++/52189).
- solaris2.9*)
- if test x$enable_symvers = xno; then
- ac_has_gthreads=yes
- elif test x$enable_libstdcxx_threads = xyes; then
- AC_MSG_WARN([You have requested C++11 threads support, but])
- AC_MSG_WARN([this breaks symbol versioning.])
- ac_has_gthreads=yes
- else
- ac_has_gthreads=no
- fi
- ;;
- *)
- ac_has_gthreads=yes
- ;;
- esac],
- [ac_has_gthreads=no])
+ ], [ac_has_gthreads=yes], [ac_has_gthreads=no])
else
ac_has_gthreads=no
fi
if test x"$ac_has_gthreads" = x"yes"; then
AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1,
[Define if gthreads library is available.])
+
+ # Also check for pthread_rwlock_t for std::shared_timed_mutex in C++14
+ AC_CHECK_TYPE([pthread_rwlock_t],
+ [AC_DEFINE([_GLIBCXX_USE_PTHREAD_RWLOCK_T], 1,
+ [Define if POSIX read/write locks are available in <gthr.h>.])],
+ [],
+ [#include "gthr.h"])
fi
CXXFLAGS="$ac_save_CXXFLAGS"
])
])
+dnl
+dnl Check whether rdrand is supported in the assembler.
+AC_DEFUN([GLIBCXX_CHECK_X86_RDRAND], [
+ AC_MSG_CHECKING([for rdrand support in assembler])
+ AC_CACHE_VAL(ac_cv_x86_rdrand, [
+ ac_cv_x86_rdrand=no
+ case "$target" in
+ i?86-*-* | \
+ x86_64-*-*)
+ AC_TRY_COMPILE(, [asm("rdrand %eax");],
+ [ac_cv_x86_rdrand=yes], [ac_cv_x86_rdrand=no])
+ esac
+ ])
+ if test $ac_cv_x86_rdrand = yes; then
+ AC_DEFINE(_GLIBCXX_X86_RDRAND, 1,
+ [ Defined if as can handle rdrand. ])
+ fi
+ AC_MSG_RESULT($ac_cv_x86_rdrand)
+])
+
dnl
dnl Check whether get_nprocs is available in <sys/sysinfo.h>, and define _GLIBCXX_USE_GET_NPROCS.
dnl
GLIBCXX_CONDITIONAL(ENABLE_WERROR, test $enable_werror = yes)
])
+dnl
+dnl Check whether obsolescent tmpnam is available in <stdio.h>,
+dnl and define _GLIBCXX_USE_TMPNAM.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_TMPNAM], [dnl
+dnl
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
+dnl
+ AC_MSG_CHECKING([for tmpnam])
+ AC_CACHE_VAL(glibcxx_cv_TMPNAM, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <stdio.h>],
+ [char *tmp = tmpnam(NULL);],
+ [glibcxx_cv_TMPNAM=yes],
+ [glibcxx_cv_TMPNAM=no])
+ ])
+ if test $glibcxx_cv_TMPNAM = yes; then
+ AC_DEFINE(_GLIBCXX_USE_TMPNAM, 1, [Define if obsolescent tmpnam is available in <stdio.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_TMPNAM)
+dnl
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check to see if sys/sdt.h exists and that it is suitable for use.
+dnl Some versions of sdt.h were not compatible with C++11.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_SDT_H], [
+ AC_MSG_CHECKING([for suitable sys/sdt.h])
+ # Note that this test has to be run with the C language.
+ # Otherwise, sdt.h will try to include some headers from
+ # libstdc++ itself.
+ AC_LANG_SAVE
+ AC_LANG_C
+ AC_CACHE_VAL(glibcxx_cv_sys_sdt_h, [
+ # Because we have to run the test in C, we use grep rather
+ # than the compiler to check for the bug. The bug is that
+ # were strings without trailing whitespace, causing g++
+ # to look for operator"". The pattern searches for the fixed
+ # output.
+ AC_EGREP_CPP([ \",\" ], [
+ #include <sys/sdt.h>
+ int f() { STAP_PROBE(hi, bob); }
+ ], [glibcxx_cv_sys_sdt_h=yes], [glibcxx_cv_sys_sdt_h=no])
+ ])
+ AC_LANG_RESTORE
+ if test $glibcxx_cv_sys_sdt_h = yes; then
+ AC_DEFINE(HAVE_SYS_SDT_H, 1,
+ [Define to 1 if you have a suitable <sys/sdt.h> header file])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_sys_sdt_h)
+])
+
+dnl
+dnl Control whether the library should define symbols for old and new ABIs.
+dnl This affects definitions of strings, stringstreams and locale facets.
+dnl
+dnl --disable-libstdcxx-dual-abi will use old ABI for all types.
+dnl
+dnl Defines:
+dnl _GLIBCXX_USE_DUAL_ABI (always defined, either to 1 or 0)
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI], [
+ GLIBCXX_ENABLE(libstdcxx-dual-abi,$1,,[support two versions of std::string])
+ if test x$enable_symvers = xgnu-versioned-namespace; then
+ # gnu-versioned-namespace is incompatible with the dual ABI.
+ enable_libstdcxx_dual_abi="no"
+ fi
+ if test x"$enable_libstdcxx_dual_abi" != xyes; then
+ AC_MSG_NOTICE([dual ABI is disabled])
+ default_libstdcxx_abi="gcc4-compatible"
+ fi
+ GLIBCXX_CONDITIONAL(ENABLE_DUAL_ABI, test $enable_libstdcxx_dual_abi = yes)
+])
+
+dnl
+dnl Check to see which ABI should be enabled by default.
+dnl
+dnl --with-default-libstdcxx-abi={gcc4-compatible,new}
+dnl
+dnl Defines:
+dnl _GLIBCXX_USE_CXX11_ABI (always defined, either to 1 or 0)
+dnl
+AC_DEFUN([GLIBCXX_DEFAULT_ABI], [
+ if test x$enable_libstdcxx_dual_abi = xyes; then
+ AC_MSG_CHECKING([for default std::string ABI to use])
+ AC_ARG_WITH([default-libstdcxx-abi],
+ AS_HELP_STRING([--with-default-libstdcxx-abi],
+ [set the std::string ABI to use by default]),
+ [case "$withval" in
+ gcc4-compatible) default_libstdcxx_abi="gcc4-compatible" ;;
+ new|cxx11) default_libstdcxx_abi="new" ;;
+ c++*|gnu++*) AC_MSG_ERROR([Supported arguments for --with-default-libstdcxx-abi have changed, use "new" or "gcc4-compatible"]) ;;
+ *) AC_MSG_ERROR([Invalid argument for --with-default-libstdcxx-abi]) ;;
+ esac
+ ],
+ [default_libstdcxx_abi="new"])
+ AC_MSG_RESULT(${default_libstdcxx_abi})
+ fi
+ if test $default_libstdcxx_abi = "new"; then
+ glibcxx_cxx11_abi=1
+ glibcxx_cxx98_abi=0
+ else
+ glibcxx_cxx11_abi=0
+ glibcxx_cxx98_abi=1
+ fi
+ AC_SUBST(glibcxx_cxx98_abi)
+ GLIBCXX_CONDITIONAL(ENABLE_CXX11_ABI, test $glibcxx_cxx11_abi = 1)
+])
+
+dnl
+dnl Check to see whether to build libstdc++fs.a
+dnl
+dnl --enable-libstdcxx-filesystem-ts
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_FILESYSTEM_TS], [
+ GLIBCXX_ENABLE(libstdcxx-filesystem-ts,auto,,
+ [turns on ISO/IEC TS 18822 support],
+ [permit yes|no|auto])
+
+ AC_MSG_CHECKING([whether to build Filesystem TS support])
+ if test x"$ac_cv_header_dirent_h" != x"yes"; then
+ enable_libstdcxx_filesystem_ts=no
+ fi
+ if test x"$enable_libstdcxx_filesystem_ts" = x"auto"; then
+ case "${target_os}" in
+ freebsd*|netbsd*|openbsd*|dragonfly*|darwin*)
+ enable_libstdcxx_filesystem_ts=yes
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+ enable_libstdcxx_filesystem_ts=yes
+ ;;
+ solaris*)
+ enable_libstdcxx_filesystem_ts=yes
+ ;;
+ *)
+ enable_libstdcxx_filesystem_ts=no
+ ;;
+ esac
+ fi
+ AC_MSG_RESULT($enable_libstdcxx_filesystem_ts)
+ GLIBCXX_CONDITIONAL(ENABLE_FILESYSTEM_TS, test $enable_libstdcxx_filesystem_ts = yes)
+])
+
+dnl
+dnl Check whether the library calls required by the Filesystem TS are present
+dnl and define _GLIBCXX_USE_REALPATH and _GLIBCXX_USE_UTIMENSAT.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_FILESYSTEM_DEPS], [dnl
+dnl
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
+dnl
+ AC_MSG_CHECKING([for struct dirent.d_type])
+ AC_CACHE_VAL(glibcxx_cv_dirent_d_type, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <dirent.h>],
+ [
+ struct dirent d;
+ if (sizeof d.d_type) return 0;
+ ],
+ [glibcxx_cv_dirent_d_type=yes],
+ [glibcxx_cv_dirent_d_type=no])
+ ])
+ if test $glibcxx_cv_dirent_d_type = yes; then
+ AC_DEFINE(HAVE_STRUCT_DIRENT_D_TYPE, 1, [Define to 1 if `d_type' is a member of `struct dirent'.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_dirent_d_type)
+dnl
+ AC_MSG_CHECKING([for realpath])
+ AC_CACHE_VAL(glibcxx_cv_realpath, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [
+ #include <stdlib.h>
+ #include <unistd.h>
+ ],
+ [
+ #if _XOPEN_VERSION < 500
+ #error
+ #elif _XOPEN_VERSION >= 700 || defined(PATH_MAX)
+ char *tmp = realpath((const char*)NULL, (char*)NULL);
+ #else
+ #error
+ #endif
+ ],
+ [glibcxx_cv_realpath=yes],
+ [glibcxx_cv_realpath=no])
+ ])
+ if test $glibcxx_cv_realpath = yes; then
+ AC_DEFINE(_GLIBCXX_USE_REALPATH, 1, [Define if usable realpath is available in <stdlib.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_realpath)
+dnl
+ AC_MSG_CHECKING([for utimensat])
+ AC_CACHE_VAL(glibcxx_cv_utimensat, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [
+ #include <fcntl.h>
+ #include <sys/stat.h>
+ ],
+ [
+ struct timespec ts[2] = { { 0, UTIME_OMIT }, { 1, 1 } };
+ int i = utimensat(AT_FDCWD, "path", ts, 0);
+ ],
+ [glibcxx_cv_utimensat=yes],
+ [glibcxx_cv_utimensat=no])
+ ])
+ if test $glibcxx_cv_utimensat = yes; then
+ AC_DEFINE(_GLIBCXX_USE_UTIMENSAT, 1, [Define if utimensat and UTIME_OMIT are available in <sys/stat.h> and AT_FDCWD in <fcntl.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_utimensat)
+dnl
+ AC_MSG_CHECKING([for struct stat.st_mtim.tv_nsec])
+ AC_CACHE_VAL(glibcxx_cv_st_mtim, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [ #include <sys/stat.h> ],
+ [
+ struct stat st;
+ return st.st_mtim.tv_nsec;
+ ],
+ [glibcxx_cv_st_mtim=yes],
+ [glibcxx_cv_st_mtim=no])
+ ])
+ if test $glibcxx_cv_st_mtim = yes; then
+ AC_DEFINE(_GLIBCXX_USE_ST_MTIM, 1, [Define if struct stat has timespec members.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_st_mtim)
+dnl
+ AC_MSG_CHECKING([for fchmod])
+ AC_CACHE_VAL(glibcxx_cv_fchmod, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <sys/stat.h>],
+ [fchmod(1, S_IWUSR);],
+ [glibcxx_cv_fchmod=yes],
+ [glibcxx_cv_fchmod=no])
+ ])
+ if test $glibcxx_cv_fchmod = yes; then
+ AC_DEFINE(_GLIBCXX_USE_FCHMOD, 1, [Define if fchmod is available in <sys/stat.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_fchmod)
+dnl
+ AC_MSG_CHECKING([for fchmodat])
+ AC_CACHE_VAL(glibcxx_cv_fchmodat, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [
+ #include <fcntl.h>
+ #include <sys/stat.h>
+ ],
+ [fchmodat(AT_FDCWD, "", 0, AT_SYMLINK_NOFOLLOW);],
+ [glibcxx_cv_fchmodat=yes],
+ [glibcxx_cv_fchmodat=no])
+ ])
+ if test $glibcxx_cv_fchmodat = yes; then
+ AC_DEFINE(_GLIBCXX_USE_FCHMODAT, 1, [Define if fchmodat is available in <sys/stat.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_fchmodat)
+dnl
+ AC_MSG_CHECKING([for sendfile that can copy files])
+ AC_CACHE_VAL(glibcxx_cv_sendfile, [dnl
+ case "${target_os}" in
+ gnu* | linux* | solaris*)
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <sys/sendfile.h>],
+ [sendfile(1, 2, (off_t*)NULL, sizeof 1);],
+ [glibcxx_cv_sendfile=yes],
+ [glibcxx_cv_sendfile=no])
+ ;;
+ *)
+ glibcxx_cv_sendfile=no
+ ;;
+ esac
+ ])
+ if test $glibcxx_cv_sendfile = yes; then
+ AC_DEFINE(_GLIBCXX_USE_SENDFILE, 1, [Define if sendfile is available in <sys/stat.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_sendfile)
+dnl
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check how size_t is mangled. Copied from libitm.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_SIZE_T_MANGLING], [
+ AC_CACHE_CHECK([how size_t is mangled],
+ glibcxx_cv_size_t_mangling, [
+ AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned long x;],
+ [glibcxx_cv_size_t_mangling=m], [
+ AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned int x;],
+ [glibcxx_cv_size_t_mangling=j], [
+ AC_TRY_COMPILE([],
+ [extern __SIZE_TYPE__ x; extern unsigned long long x;],
+ [glibcxx_cv_size_t_mangling=y], [
+ AC_TRY_COMPILE([],
+ [extern __SIZE_TYPE__ x; extern unsigned short x;],
+ [glibcxx_cv_size_t_mangling=t],
+ [glibcxx_cv_size_t_mangling=x])
+ ])
+ ])
+ ])
+ ])
+ if test $glibcxx_cv_size_t_mangling = x; then
+ AC_MSG_ERROR([Unknown underlying type for size_t])
+ fi
+ AC_DEFINE_UNQUOTED(_GLIBCXX_MANGLE_SIZE_T, [$glibcxx_cv_size_t_mangling],
+ [Define to the letter to which size_t is mangled.])
+])
# Macros from the top-level gcc directory.
m4_include([../config/gc++filt.m4])
m4_include([../config/tls.m4])
+m4_include([../config/gthr.m4])
projects / gcc.git / blobdiff