diff options
Diffstat (limited to 'libstdc++-v3/acinclude.m4')
| -rw-r--r-- | libstdc++-v3/acinclude.m4 | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 4936cc8..bec563f 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -1201,6 +1201,39 @@ AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [ ]) dnl +dnl Check for nanosleep, used in the implementation of 30.2.2 +dnl [thread.thread.this] in the current C++0x working draft. +dnl +AC_DEFUN([GLIBCXX_CHECK_NANOSLEEP], [ + + AC_MSG_CHECKING([for nanosleep]) + + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + ac_save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -fno-exceptions" + + ac_has_nanosleep=no; + AC_CHECK_HEADERS(time.h, ac_has_time_h=yes, ac_has_time_h=no) + if test x"$ac_has_time_h" = x"yes"; then + AC_MSG_CHECKING([for nanosleep]) + AC_TRY_COMPILE([#include <time.h>], + [timespec ts; nanosleep(&ts, 0);], + [ac_has_nanosleep=yes], [ac_has_nanosleep=no]) + + AC_MSG_RESULT($ac_has_nanosleep) + fi + + if test x"$ac_has_nanosleep" = x"yes"; then + AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1, + [ Defined if nanosleep is available. ]) + fi + + CXXFLAGS="$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 |