acinclude.m4 (GLIBCPP_CHECK_MATH_SUPPORT): Add -D_GNU_SOURCE, so that all the…

acinclude.m4 (GLIBCPP_CHECK_MATH_SUPPORT): Add -D_GNU_SOURCE, so that all the freaky stuff like sincos will be around...


2000-06-23  Benjamin Kosnik  <bkoz@purist.soma.redhat.com>
            Ulrich Drepper  <drepper@cygnus.com>

	* acinclude.m4 (GLIBCPP_CHECK_MATH_SUPPORT): Add -D_GNU_SOURCE, so
	that all the freaky stuff like sincos will be around...

Co-Authored-By: Ulrich Drepper <drepper@cygnus.com>

From-SVN: r34666

libstdc++-v3/ChangeLog

+2000-06-23  Benjamin Kosnik  <bkoz@purist.soma.redhat.com>
+            Ulrich Drepper  <drepper@cygnus.com>
+	
+	* acinclude.m4 (GLIBCPP_CHECK_MATH_SUPPORT): Add -D_GNU_SOURCE, so
+	that all the freaky stuff like sincos will be around...
+
 2000-06-22  Branko Cibej  <branko.cibej@hermes.si>
 
         * Makefile.am (AM_MAKEFLAGS): Added WERROR to list of flags.

libstdc++-v3/acinclude.m4

@@ -482,7 +482,7 @@ dnl GLIBCPP_CHECK_MATH_SUPPORT
 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
   ac_test_CXXFLAGS="${CXXFLAGS+set}"
   ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtins'
+  CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
 
   dnl Check libm
   AC_CHECK_LIB(m, sin, libm="-lm")

libstdc++-v3/aclocal.m4

@@ -494,7 +494,7 @@ dnl GLIBCPP_CHECK_MATH_SUPPORT
 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
   ac_test_CXXFLAGS="${CXXFLAGS+set}"
   ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtins'
+  CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
 
   dnl Check libm
   AC_CHECK_LIB(m, sin, libm="-lm")

libstdc++-v3/configure

@@ -3970,7 +3970,7 @@ EOF
   
   ac_test_CXXFLAGS="${CXXFLAGS+set}"
   ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtins'
+  CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
 
     echo $ac_n "checking for sin in -lm""... $ac_c" 1>&6
 echo "configure:3977: checking for sin in -lm" >&5