2006-02-17  Jakub Jelinek  <jakub@redhat.com>

	PR libstdc++/11953
	* gthr-posix.h (_REENTRANT): Only define if __osf__ is defined.

	* config/ia64/linux.h (CPP_SPEC): Define.
	* config/s390/linux.h (CPP_SPEC): Define.
 
--- gcc/gthr-posix.h	(revision 111211)
+++ gcc/gthr-posix.h	(revision 111212)
@@ -36,7 +36,7 @@ Software Foundation, 51 Franklin Street,
 #define __GTHREADS 1
 
 /* Some implementations of <pthread.h> require this to be defined.  */
-#ifndef _REENTRANT
+#if !defined(_REENTRANT) && defined(__osf__)
 #define _REENTRANT 1
 #endif
 
--- gcc/config/s390/linux.h	(revision 111211)
+++ gcc/config/s390/linux.h	(revision 111212)
@@ -89,6 +89,7 @@ Software Foundation, 51 Franklin Street,
           %{m31:-dynamic-linker /lib/ld.so.1} \
           %{m64:-dynamic-linker /lib64/ld64.so.1}}}}"
 
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
 
 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
 
--- gcc/config/ia64/linux.h	(revision 111211)
+++ gcc/config/ia64/linux.h	(revision 111212)
@@ -48,6 +48,7 @@ do {						\
       %{!dynamic-linker:-dynamic-linker /lib/ld-linux-ia64.so.2}} \
       %{static:-static}}"
 
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
 
 #define JMP_BUF_SIZE  76