linux.h (CPLUSPLUS_CPP_SPEC): Add -D_GNU_SOURCE.

2001-07-30  H.J. Lu <hjl@gnu.org>

	* config/mips/linux.h (CPLUSPLUS_CPP_SPEC): Add
	-D_GNU_SOURCE.

From-SVN: r44480

gcc/ChangeLog

+2001-07-30  H.J. Lu <hjl@gnu.org>
+
+	* config/mips/linux.h (CPLUSPLUS_CPP_SPEC): Add
+	-D_GNU_SOURCE.
+
 2001-07-30  H.J. Lu  (hjl@gnu.org)
 
 	* config/mips/linux.h (ASM_DECLARE_FUNCTION_NAME): Defined.

gcc/config/mips/linux.h

@@ -105,6 +105,13 @@ Boston, MA 02111-1307, USA.  */
 %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} \
 %{pthread:-D_REENTRANT}"
 
+/* The GNU C++ standard library requires that these macros be defined.  */
+#undef CPLUSPLUS_CPP_SPEC
+#define CPLUSPLUS_CPP_SPEC "\
+-D__LANGUAGE_C_PLUS_PLUS -D_LANGUAGE_C_PLUS_PLUS \
+-D_GNU_SOURCE %(cpp) \
+"
+
 /* Provide a STARTFILE_SPEC appropriate for GNU/Linux.  Here we add
    the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
    provides part of the support for getting C++ file-scope static