config.gcc (powerpc*-*-linux*): Include gnu-user.h in tm_file.

	* config.gcc (powerpc*-*-linux*): Include gnu-user.h in tm_file.
	* config/rs6000/sysv4.h (CC!_SPEC): Undefine it before defining it.
	* config/rs6000/linux.h (CPLUSPLUS_CPP_SPEC): Delete define.
	(LINK_GCC_C_SEQUENCE_SPEC): Likewise.
	(USE_LD_AS_NEEDED): Likewise.
	(ASM_APP_ON): Likewise.
	(ASM_APP_OFF): Likewise.
	(TARGET_POSIX_IO): Likewise.
	* config/rs6000/linux64.h (CPLUSPLUS_CPP_SPEC): Likewise.
	(LINK_GCC_C_SEQUENCE_SPEC): Likewise.
	(USE_LD_AS_NEEDED): Likewise.
	(ASM_APP_ON): Likewise.
	(ASM_APP_OFF): Likewise.
	(TARGET_POSIX_IO): Likewise.

From-SVN: r213125

gcc/ChangeLog

+2014-07-28  Peter Bergner  <bergner@vnet.ibm.com>
+
+	* config.gcc (powerpc*-*-linux*): Include gnu-user.h in tm_file.
+	* config/rs6000/sysv4.h (CC!_SPEC): Undefine it before defining it.
+	* config/rs6000/linux.h (CPLUSPLUS_CPP_SPEC): Delete define.
+	(LINK_GCC_C_SEQUENCE_SPEC): Likewise.
+	(USE_LD_AS_NEEDED): Likewise.
+	(ASM_APP_ON): Likewise.
+	(ASM_APP_OFF): Likewise.
+	(TARGET_POSIX_IO): Likewise.
+	* config/rs6000/linux64.h (CPLUSPLUS_CPP_SPEC): Likewise.
+	(LINK_GCC_C_SEQUENCE_SPEC): Likewise.
+	(USE_LD_AS_NEEDED): Likewise.
+	(ASM_APP_ON): Likewise.
+	(ASM_APP_OFF): Likewise.
+	(TARGET_POSIX_IO): Likewise.
+
 2014-07-28  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR middle-end/61734

gcc/config.gcc

@@ -2252,7 +2252,7 @@ powerpc-*-rtems*)
 	tmake_file="${tmake_file} rs6000/t-fprules rs6000/t-rtems rs6000/t-ppccomm"
 	;;
 powerpc*-*-linux*)
-	tm_file="${tm_file} dbxelf.h elfos.h freebsd-spec.h rs6000/sysv4.h"
+	tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h freebsd-spec.h rs6000/sysv4.h"
 	extra_options="${extra_options} rs6000/sysv4.opt"
 	tmake_file="rs6000/t-fprules rs6000/t-ppcos ${tmake_file} rs6000/t-ppccomm"
 	extra_objs="$extra_objs rs6000-linux.o"

gcc/config/rs6000/linux.h

@@ -56,12 +56,6 @@
 #undef	CPP_OS_DEFAULT_SPEC
 #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
 
-/* The GNU C++ standard library currently requires _GNU_SOURCE being
-   defined on glibc-based systems. This temporary hack accomplishes this,
-   it should go away as soon as libstdc++-v3 has a real fix.  */
-#undef  CPLUSPLUS_CPP_SPEC
-#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
-
 #undef  LINK_SHLIB_SPEC
 #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
 
@@ -98,22 +92,6 @@
   %{rdynamic:-export-dynamic} \
   -dynamic-linker " GNU_USER_DYNAMIC_LINKER "}}"
 
-#define LINK_GCC_C_SEQUENCE_SPEC \
-  "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
-
-/* Use --as-needed -lgcc_s for eh support.  */
-#ifdef HAVE_LD_AS_NEEDED
-#define USE_LD_AS_NEEDED 1
-#endif
-
-/* Override rs6000.h definition.  */
-#undef  ASM_APP_ON
-#define ASM_APP_ON "#APP\n"
-
-/* Override rs6000.h definition.  */
-#undef  ASM_APP_OFF
-#define ASM_APP_OFF "#NO_APP\n"
-
 /* For backward compatibility, we must continue to use the AIX
    structure return convention.  */
 #undef  DRAFT_V4_STRUCT_RET
@@ -129,8 +107,6 @@
 #define RELOCATABLE_NEEDS_FIXUP \
   (rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE)
 
-#define TARGET_POSIX_IO
-
 #ifdef TARGET_LIBC_PROVIDES_SSP
 /* ppc32 glibc provides __stack_chk_guard in -0x7008(2).  */
 #define TARGET_THREAD_SSP_OFFSET	-0x7008

gcc/config/rs6000/linux64.h

@@ -343,12 +343,6 @@ extern int dot_symbols;
 #undef  CPP_OS_DEFAULT_SPEC
 #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
 
-/* The GNU C++ standard library currently requires _GNU_SOURCE being
-   defined on glibc-based systems. This temporary hack accomplishes this,
-   it should go away as soon as libstdc++-v3 has a real fix.  */
-#undef  CPLUSPLUS_CPP_SPEC
-#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
-
 #undef  LINK_SHLIB_SPEC
 #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
 
@@ -440,14 +434,6 @@ extern int dot_symbols;
 #undef  WCHAR_TYPE_SIZE
 #define WCHAR_TYPE_SIZE 32
 
-/* Override rs6000.h definition.  */
-#undef  ASM_APP_ON
-#define ASM_APP_ON "#APP\n"
-
-/* Override rs6000.h definition.  */
-#undef  ASM_APP_OFF
-#define ASM_APP_OFF "#NO_APP\n"
-
 #undef  RS6000_MCOUNT
 #define RS6000_MCOUNT "_mcount"
 
@@ -547,16 +533,6 @@ extern int dot_symbols;
 #undef DRAFT_V4_STRUCT_RET
 #define DRAFT_V4_STRUCT_RET (!TARGET_64BIT)
 
-#define TARGET_POSIX_IO
-
-#define LINK_GCC_C_SEQUENCE_SPEC \
-  "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
-
-/* Use --as-needed -lgcc_s for eh support.  */
-#ifdef HAVE_LD_AS_NEEDED
-#define USE_LD_AS_NEEDED 1
-#endif
-
 #ifdef TARGET_LIBC_PROVIDES_SSP
 /* ppc32 glibc provides __stack_chk_guard in -0x7008(2),
    ppc64 glibc provides it at -0x7010(13).  */

gcc/config/rs6000/sysv4.h

@@ -539,6 +539,7 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN)
 #endif
 
 /* Pass -G xxx to the compiler.  */
+#undef CC1_SPEC
 #define	CC1_SPEC "%{G*} %(cc1_cpu)" \
 "%{meabi: %{!mcall-*: -mcall-sysv }} \
 %{!meabi: %{!mno-eabi: \