2007-04-09 H.J. Lu <hongjiu.lu@intel.com>

[pf3gnuchains/gcc-fork.git] / libstdc++-v3 / acinclude.m4

diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 1b58eef..18d1840 100644 (file)
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -795,6 +795,7 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
   # 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)
   ac_c99_complex=no;
   if test x"$ac_has_complex_h" = x"yes"; then
@@ -1264,19 +1265,30 @@ dnl
 dnl --enable-cheaders= [does stuff].
 dnl --disable-cheaders [does not do anything, really].
 dnl  +  Usage:  GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
-dnl       Where DEFAULT is either `c' or `c_std'.
+dnl       Where DEFAULT is either 'c' or 'c_std' or 'c_global'.
 dnl
 AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [
   GLIBCXX_ENABLE(cheaders,$1,[=KIND],
-    [construct "C" headers for g++], [permit c|c_std])
+    [construct "C" headers for g++], [permit c|c_std|c_global])
   AC_MSG_NOTICE("C" header strategy set to $enable_cheaders)
 
   C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders
 
+  # Allow overrides to configure.host here.
+  if test $enable_cheaders = c_global; then
+     c_compatibility=yes
+  fi
+
+  if test $enable_cheaders = c_global || test $enable_cheaders = c_std; then
+     c_extra=yes
+  fi
+
   AC_SUBST(C_INCLUDE_DIR)
   GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
   GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
+  GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global)
   GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes)
+  GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_EXTRA, test $c_extra = yes)
 ])