PR libstdc++/55741

	* acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Check for Sleep.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* src/c++11/thread.cc (__sleep_for): Use Sleep if available.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@194635 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 29 insertions, 0 deletions

diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 1e7c2937524..9e8360200b4 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -19900,6 +19900,35 @@ $as_echo "#define HAVE_USLEEP 1" >>confdefs.h
 $as_echo "$ac_has_usleep" >&6; }
   fi
 
+  if test x"$ac_has_nanosleep$ac_has_sleep" = x"nono"; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for Sleep" >&5
+$as_echo_n "checking for Sleep... " >&6; }
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <windows.h>
+int
+main ()
+{
+Sleep(1)
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  ac_has_win32_sleep=yes
+else
+  ac_has_win32_sleep=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+      if test x"$ac_has_win32_sleep" = x"yes"; then
+
+$as_echo "#define HAVE_WIN32_SLEEP 1" >>confdefs.h
+
+      fi
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_has_win32_sleep" >&5
+$as_echo "$ac_has_win32_sleep" >&6; }
+  fi
+
 
 
   CXXFLAGS="$ac_save_CXXFLAGS"