linux.h: Define __gnu_linux__ wherever __linux__ is defined...

	* alpha/linux.h: Define __gnu_linux__ wherever __linux__ is
	defined, and __gnu_hurd__ wherever __GNU__ is defined.
	* arm/linux-elf.h: Likewise.
	* cris/aout.h: Likewise.
	* cris/linux.h: Likewise.
	* i370/linux.h: Likewise.
	* i386/gnu.h: Likewise.
	* i386/linux-aout.h: Likewise.
	* i386/linux-oldld.h: Likewise.
	* i386/linux.h: Likewise.
	* i386/linux64.h: Likewise.
	* ia64/linux.h: Likewise.
	* m68k/linux-aout.h: Likewise.
	* m68k/linux.h: Likewise.
	* mips/linux.h: Likewise.
	* pa/pa-linux.h: Likewise.
	* pj/linux.h: Likewise.
	* rs6000/sysv4.h: Likewise.
	* s390/linux.h: Likewise.
	* sh/linux.h: Likewise.
	* sparc/linux-aout.h: Likewise.
	* sparc/linux.h: Likewise.
	* sparc/linux64.h: Likewise.
	* xtensa/linux.h: Likewise.

From-SVN: r52279

23 files changed, 50 insertions, 50 deletions

diff --git a/gcc/config/alpha/linux.h b/gcc/config/alpha/linux.h
index 721153a03c3..7c4057fabbe 100644
--- a/gcc/config/alpha/linux.h
+++ b/gcc/config/alpha/linux.h
@@ -1,6 +1,6 @@
 /* Definitions of target machine for GNU compiler,
    for Alpha Linux-based GNU systems.
-   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 2002 Free Software Foundation, Inc.
    Contributed by Richard Henderson.
 
 This file is part of GNU CC.
@@ -25,7 +25,7 @@ Boston, MA 02111-1307, USA.  */
 
 #undef CPP_PREDEFINES
 #define CPP_PREDEFINES \
-  "-Dlinux -Dunix -Asystem=linux -D_LONGLONG -D__alpha__"
+  "-Dgnu_linux -Dlinux -Dunix -Asystem=linux -D_LONGLONG -D__alpha__"
 
 /* The GNU C++ standard library requires that these macros be defined.  */
 #undef CPLUSPLUS_CPP_SPEC
diff --git a/gcc/config/arm/linux-elf.h b/gcc/config/arm/linux-elf.h
index 74f7e7ef999..86e48c898cf 100644
--- a/gcc/config/arm/linux-elf.h
+++ b/gcc/config/arm/linux-elf.h
@@ -1,5 +1,5 @@
 /* Definitions for ARM running Linux-based GNU systems using ELF
-   Copyright (C) 1993, 1994, 1997, 1998, 1999, 2000, 2001 
+   Copyright (C) 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002 
    Free Software Foundation, Inc.
    Contributed by Philip Blundell <philb@gnu.org>
 
@@ -87,7 +87,7 @@ Boston, MA 02111-1307, USA.  */
 
 #undef  CPP_PREDEFINES
 #define CPP_PREDEFINES \
-"-Dunix -Dlinux -D__ELF__ \
+"-Dunix -Dgnu_linux -Dlinux -D__ELF__ \
 -Asystem=unix -Asystem=posix"
 
 /* Allow #sccs in preprocessor.  */
diff --git a/gcc/config/cris/aout.h b/gcc/config/cris/aout.h
index dc998f1b0fe..ce906e79592 100644
--- a/gcc/config/cris/aout.h
+++ b/gcc/config/cris/aout.h
@@ -1,5 +1,5 @@
 /* Definitions for GCC.  Part of the machine description for CRIS.
-   Copyright (C) 2001 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2002 Free Software Foundation, Inc.
    Contributed by Axis Communications.  Written by Hans-Peter Nilsson.
 
 This file is part of GCC.
@@ -65,7 +65,7 @@ Boston, MA 02111-1307, USA.  */
 #undef CRIS_CPP_SUBTARGET_SPEC
 #define CRIS_CPP_SUBTARGET_SPEC \
  "-D__AOUT__\
-  %{melinux:-D__linux__ -D__unix__ -D__elinux__ -D__uclinux__\
+  %{melinux:-D__gnu_linux__ -D__linux__ -D__unix__ -D__elinux__ -D__uclinux__\
     %{!nostdinc:\
       %{!mbest-lib-options:%{isystem*}}\
       -isystem elinux/include%s\
diff --git a/gcc/config/cris/linux.h b/gcc/config/cris/linux.h
index 5949937ef71..6962d742dd7 100644
--- a/gcc/config/cris/linux.h
+++ b/gcc/config/cris/linux.h
@@ -1,5 +1,5 @@
 /* Definitions for GCC.  Part of the machine description for CRIS.
-   Copyright (C) 2001 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2002 Free Software Foundation, Inc.
    Contributed by Axis Communications.  Written by Hans-Peter Nilsson.
 
 This file is part of GCC.
@@ -47,7 +47,7 @@ Boston, MA 02111-1307, USA.  */
 
 #undef CRIS_CPP_SUBTARGET_SPEC
 #define CRIS_CPP_SUBTARGET_SPEC \
-  "-D__linux__ -D__unix__  -D__ELF__\
+  "-D__gnu_linux__ __linux__ -D__unix__  -D__ELF__\
    %{pthread:-D_REENTRANT}\
    %{fPIC|fpic: -D__PIC__ -D__pic__}\
    %{!fleading-underscore:-fno-leading-underscore -D__NO_UNDERSCORES__}\
diff --git a/gcc/config/i370/linux.h b/gcc/config/i370/linux.h
index 52a34385949..6cc95c041b4 100644
--- a/gcc/config/i370/linux.h
+++ b/gcc/config/i370/linux.h
@@ -35,7 +35,7 @@ Boston, MA 02111-1307, USA.  */
 /* Names to predefine in the preprocessor for this target machine.  */
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-DGCC -Dgcc -D__ELF__ -Dunix -Dlinux -Asystem=posix -Acpu=i370 -Amachine=i370"
+#define CPP_PREDEFINES "-DGCC -Dgcc -D__ELF__ -Dunix -Dgnu_linux -Dlinux -Asystem=posix -Acpu=i370 -Amachine=i370"
 
 /* Options for this target machine.  */
 
@@ -86,7 +86,7 @@ Boston, MA 02111-1307, USA.  */
 #endif
 
 #ifndef CPP_OS_LINUX_SPEC
-#define CPP_OS_LINUX_SPEC "-D__unix__ -D__linux__ \
+#define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
 %{!ansi: -Dunix -Dlinux } \
 -Asystem=unix -Asystem=linux"
 #endif
diff --git a/gcc/config/i386/gnu.h b/gcc/config/i386/gnu.h
index 0214c05771f..fb80d0fa793 100644
--- a/gcc/config/i386/gnu.h
+++ b/gcc/config/i386/gnu.h
@@ -5,7 +5,7 @@
 
 #undef CPP_PREDEFINES
 #define CPP_PREDEFINES "-D__ELF__ -DMACH -Asystem=mach \
-  -Dunix -Asystem=unix -Asystem=posix -D__GNU__ -Asystem=gnu"
+  -Dunix -Asystem=unix -Asystem=posix -Dgnu_hurd -D__GNU__ -Asystem=gnu"
 
 #undef CPP_SPEC
 #define CPP_SPEC "%(cpp_cpu) \
diff --git a/gcc/config/i386/linux-aout.h b/gcc/config/i386/linux-aout.h
index 9bcbfe7045c..a4ea805c210 100644
--- a/gcc/config/i386/linux-aout.h
+++ b/gcc/config/i386/linux-aout.h
@@ -26,7 +26,7 @@ Boston, MA 02111-1307, USA.  */
 /* Specify predefined symbols in preprocessor.  */
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Dunix -Dlinux -Asystem=posix"
+#define CPP_PREDEFINES "-Dunix -Dgnu_linux -Dlinux -Asystem=posix"
 
 #undef CPP_SPEC
 #define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}"
diff --git a/gcc/config/i386/linux-oldld.h b/gcc/config/i386/linux-oldld.h
index 6a6139683e8..a1453d9873a 100644
--- a/gcc/config/i386/linux-oldld.h
+++ b/gcc/config/i386/linux-oldld.h
@@ -1,6 +1,6 @@
 /* Definitions for Intel 386 running Linux-based GNU systems with pre-BFD
    a.out linkers.
-   Copyright (C) 1995, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1997, 1998, 2002 Free Software Foundation, Inc.
    Contributed by Michael Meissner (meissner@cygnus.com)
 
 This file is part of GNU CC.
@@ -26,7 +26,7 @@ Boston, MA 02111-1307, USA.  */
 /* Specify predefined symbols in preprocessor.  */
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Dunix -Dlinux -Asystem=posix"
+#define CPP_PREDEFINES "-Dunix -Dgnu_linux -Dlinux -Asystem=posix"
 
 #undef CPP_SPEC
 #define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}"
diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h
index 282a11b05a7..89b661bb25e 100644
--- a/gcc/config/i386/linux.h
+++ b/gcc/config/i386/linux.h
@@ -84,7 +84,7 @@ Boston, MA 02111-1307, USA.  */
 #define WCHAR_TYPE_SIZE BITS_PER_WORD
     
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-D__ELF__ -Dunix -Dlinux -Asystem=posix"
+#define CPP_PREDEFINES "-D__ELF__ -Dunix -Dgnu_linux -Dlinux -Asystem=posix"
 
 #undef CPP_SPEC
 #ifdef USE_GNULIBC_1
diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
index a969ab9906e..82ff36ac91c 100644
--- a/gcc/config/i386/linux64.h
+++ b/gcc/config/i386/linux64.h
@@ -24,7 +24,7 @@ Boston, MA 02111-1307, USA.  */
 #define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)");
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-D__ELF__ -Dunix -Dlinux -Asystem(posix)"
+#define CPP_PREDEFINES "-D__ELF__ -Dunix -Dgnu_linux -Dlinux -Asystem(posix)"
 
 #undef CPP_SPEC
 #define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT} %{!m32:-D__LONG_MAX__=9223372036854775807L}"
diff --git a/gcc/config/ia64/linux.h b/gcc/config/ia64/linux.h
index 51ba60f1635..d54b4592684 100644
--- a/gcc/config/ia64/linux.h
+++ b/gcc/config/ia64/linux.h
@@ -11,8 +11,8 @@
 
 /* ??? Maybe this should be in sysv4.h?  */
 #define CPP_PREDEFINES "\
-  -D__linux -D__linux__ -D_LONGLONG -Dlinux -Dunix \
-  -Asystem=linux"
+  -D__gnu_linux__ -D__linux -D__linux__ -D_LONGLONG -Dgnu_linux
+  -Dlinux -Dunix -Asystem=linux"
 
 /* Need to override linux.h STARTFILE_SPEC, since it has crtbeginT.o in.  */
 #undef STARTFILE_SPEC
diff --git a/gcc/config/m68k/linux-aout.h b/gcc/config/m68k/linux-aout.h
index f7bb33726ad..7b9293ae9e7 100644
--- a/gcc/config/m68k/linux-aout.h
+++ b/gcc/config/m68k/linux-aout.h
@@ -1,5 +1,5 @@
 /* Definitions for Motorola m68k running Linux-based GNU systems.
-   Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -29,7 +29,7 @@ Boston, MA 02111-1307, USA.  */
 #define ASM_COMMENT_START "|"
 
 #define CPP_PREDEFINES \
-  "-Dunix -Dmc68000 -Dmc68020 -Dlinux -Asystem=unix -Asystem=posix -Acpu=m68k -Amachine=m68k"
+  "-Dunix -Dmc68000 -Dmc68020 -Dgnu_linux -Dlinux -Asystem=unix -Asystem=posix -Acpu=m68k -Amachine=m68k"
 
 #undef CPP_SPEC
 #if TARGET_DEFAULT & MASK_68881
diff --git a/gcc/config/m68k/linux.h b/gcc/config/m68k/linux.h
index b1ec9777364..e5208e604f7 100644
--- a/gcc/config/m68k/linux.h
+++ b/gcc/config/m68k/linux.h
@@ -1,6 +1,6 @@
 /* Definitions for Motorola 68k running Linux-based GNU systems with
    ELF format.
-   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -113,7 +113,7 @@ Boston, MA 02111-1307, USA.  */
 #define WCHAR_TYPE_SIZE BITS_PER_WORD
 
 #define CPP_PREDEFINES \
-  "-D__ELF__ -Dunix -Dmc68000 -Dmc68020 -Dlinux -Asystem=unix -Asystem=posix -Acpu=m68k -Amachine=m68k"
+  "-D__ELF__ -Dunix -Dmc68000 -Dmc68020 -Dgnu_linux -Dlinux -Asystem=unix -Asystem=posix -Acpu=m68k -Amachine=m68k"
 
 #undef CPP_SPEC
 #ifdef USE_GNULIBC_1
diff --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
index c63c461d847..738e1f644db 100644
--- a/gcc/config/mips/linux.h
+++ b/gcc/config/mips/linux.h
@@ -1,5 +1,5 @@
 /* Definitions for MIPS running Linux-based GNU systems with ELF format.
-   Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -134,11 +134,11 @@ void FN ()							\
 #undef CPP_PREDEFINES
 #if TARGET_ENDIAN_DEFAULT == 0
 #define CPP_PREDEFINES "-DMIPSEL -D_MIPSEL -Dunix -Dmips -D_mips \
--DR3000 -D_R3000 -Dlinux -Asystem=posix -Acpu=mips \
+-DR3000 -D_R3000 -Dgnu_linux -Dlinux -Asystem=posix -Acpu=mips \
 -Amachine=mips -D__ELF__ -D__PIC__ -D__pic__"
 #else
 #define CPP_PREDEFINES "-DMIPSEB -D_MIPSEB -Dunix -Dmips -D_mips \
--DR3000 -D_R3000 -Dlinux -Asystem=posix -Acpu=mips \
+-DR3000 -D_R3000 -Dgnu_linux -Dlinux -Asystem=posix -Acpu=mips \
 -Amachine=mips -D__ELF__ -D__PIC__ -D__pic__"
 #endif
 
diff --git a/gcc/config/pa/pa-linux.h b/gcc/config/pa/pa-linux.h
index 16599ef171a..ffae14dfc75 100644
--- a/gcc/config/pa/pa-linux.h
+++ b/gcc/config/pa/pa-linux.h
@@ -58,7 +58,7 @@ Boston, MA 02111-1307, USA.  */
     } while (0)
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__hppa__ -Dlinux -Asystem=unix -Asystem=posix -Acpu=hppa -Amachine=hppa -Amachine=bigendian"
+#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__hppa__ -Dgnu_linux -Dlinux -Asystem=unix -Asystem=posix -Acpu=hppa -Amachine=hppa -Amachine=bigendian"
 
 #undef	LIB_SPEC
 #define LIB_SPEC \
diff --git a/gcc/config/pj/linux.h b/gcc/config/pj/linux.h
index 1b79c6178f7..1404a55be73 100644
--- a/gcc/config/pj/linux.h
+++ b/gcc/config/pj/linux.h
@@ -1,5 +1,5 @@
 /* Definitions for a picoJava Linux-based GNU system.
-   Copyright (C) 2000 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2002 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -26,7 +26,7 @@ Boston, MA 02111-1307, USA.  */
 #undef STARTFILE_SPEC
 #undef ENDFILE_SPEC
 
-#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__pj__ -Dlinux -Asystem=posix"
+#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__pj__ -Dgnu_linux -Dlinux -Asystem=posix"
 #define STARTFILE_SPEC "crt1.o%s crti.o%s crtbegin.o%s"
 #define ENDFILE_SPEC   "crtend.o%s crtn.o%s"
 
diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
index 6b5f48a12ec..6b97d7777d9 100644
--- a/gcc/config/rs6000/sysv4.h
+++ b/gcc/config/rs6000/sysv4.h
@@ -1221,18 +1221,18 @@ do {						\
 #endif
 
 #ifdef USE_GNULIBC_1
-#define CPP_OS_LINUX_SPEC "-D__unix__ -D__linux__		\
-%{!undef:							\
-  %{!ansi:							\
-    %{!std=*:-Dunix -D__unix -Dlinux -D__linux}			\
-    %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}		\
+#define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
+%{!undef:							  \
+  %{!ansi:							  \
+    %{!std=*:-Dunix -D__unix -Dlinux -D__linux}	                  \
+    %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}		  \
 -Asystem=unix -Asystem=posix"
 #else
-#define CPP_OS_LINUX_SPEC "-D__unix__ -D__linux__		\
-%{!undef:							\
-  %{!ansi:							\
-    %{!std=*:-Dunix -D__unix -Dlinux -D__linux}			\
-    %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}		\
+#define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
+%{!undef:							  \
+  %{!ansi:							  \
+    %{!std=*:-Dunix -D__unix -Dlinux -D__linux}			  \
+    %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}		  \
 -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
 #endif
 
@@ -1256,9 +1256,9 @@ do {						\
   %{rdynamic:-export-dynamic} \
   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
 
-#define CPP_OS_GNU_SPEC "-D__unix__ -D__GNU__	\
-%{!undef:					\
-  %{!ansi: -Dunix -D__unix}}			\
+#define CPP_OS_GNU_SPEC "-D__unix__ -Dgnu_hurd -D__GNU__	\
+%{!undef:					                \
+  %{!ansi: -Dunix -D__unix}}			                \
 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
 
 /* NetBSD support.  */
diff --git a/gcc/config/s390/linux.h b/gcc/config/s390/linux.h
index 5ce0a714e72..365971485e5 100644
--- a/gcc/config/s390/linux.h
+++ b/gcc/config/s390/linux.h
@@ -54,7 +54,7 @@ Boston, MA 02111-1307, USA.  */
 #define NO_BUILTIN_PTRDIFF_TYPE
 
 #define CPP_PREDEFINES \
-  "-Dunix -Asystem(unix) -Dlinux -Asystem(linux) -D__ELF__ \
+  "-Dunix -Asystem(unix) -Dgnu_linux -Dlinux -Asystem(linux) -D__ELF__ \
    -Acpu(s390) -Amachine(s390) -D__s390__"
 
 #define CPP_ARCH31_SPEC \
diff --git a/gcc/config/sh/linux.h b/gcc/config/sh/linux.h
index be5bcb58148..a6f94b61f59 100644
--- a/gcc/config/sh/linux.h
+++ b/gcc/config/sh/linux.h
@@ -41,7 +41,7 @@ Boston, MA 02111-1307, USA.  */
 
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__sh__ -Dlinux -Asystem=posix"
+#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__sh__ -Dgnu_linux -Dlinux -Asystem=posix"
 
 #undef SUBTARGET_ASM_ENDIAN_SPEC
 #define SUBTARGET_ASM_ENDIAN_SPEC "%{!mb:-little}"
diff --git a/gcc/config/sparc/linux-aout.h b/gcc/config/sparc/linux-aout.h
index bed72db14f6..b5930d9ae3c 100644
--- a/gcc/config/sparc/linux-aout.h
+++ b/gcc/config/sparc/linux-aout.h
@@ -1,5 +1,5 @@
 /* Definitions for SPARC running Linux-based GNU systems with a.out.
-   Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1999, 2002 Free Software Foundation, Inc.
    Contributed by Eddie C. Dost (ecd@skynet.be)
 
 This file is part of GNU CC.
@@ -60,7 +60,7 @@ Boston, MA 02111-1307, USA.  */
 #define WCHAR_TYPE_SIZE 32
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Dunix -Dsparc -Dlinux -Asystem=unix -Asystem=posix"
+#define CPP_PREDEFINES "-Dunix -Dsparc -Dgnu_linux -Dlinux -Asystem=unix -Asystem=posix"
 
 #undef CPP_SUBTARGET_SPEC
 #define CPP_SUBTARGET_SPEC \
diff --git a/gcc/config/sparc/linux.h b/gcc/config/sparc/linux.h
index f7ae4d7f9f1..119fe345e0f 100644
--- a/gcc/config/sparc/linux.h
+++ b/gcc/config/sparc/linux.h
@@ -1,5 +1,5 @@
 /* Definitions for SPARC running Linux-based GNU systems with ELF.
-   Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
    Contributed by Eddie C. Dost (ecd@skynet.be)
 
 This file is part of GNU CC.
@@ -101,7 +101,7 @@ Boston, MA 02111-1307, USA.  */
 #define WCHAR_TYPE_SIZE 32
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__sparc__ -Dlinux -Asystem=unix -Asystem=posix"
+#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__sparc__ -Dgnu_linux -Dlinux -Asystem=unix -Asystem=posix"
 
 #undef CPP_SUBTARGET_SPEC
 #ifdef USE_GNULIBC_1
diff --git a/gcc/config/sparc/linux64.h b/gcc/config/sparc/linux64.h
index 9540efc40d7..13bd25cc348 100644
--- a/gcc/config/sparc/linux64.h
+++ b/gcc/config/sparc/linux64.h
@@ -169,7 +169,7 @@ ENDFILE_SPEC_COMMON
 #endif
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-D__ELF__ -Dunix -D_LONGLONG -D__sparc__ -Dlinux -Asystem=unix -Asystem=posix"
+#define CPP_PREDEFINES "-D__ELF__ -Dunix -D_LONGLONG -D__sparc__ -Dgnu_linux -Dlinux -Asystem=unix -Asystem=posix"
 
 #undef CPP_SUBTARGET_SPEC
 #define CPP_SUBTARGET_SPEC "\
diff --git a/gcc/config/xtensa/linux.h b/gcc/config/xtensa/linux.h
index 04c6b7f3d6d..afe35ddca6b 100644
--- a/gcc/config/xtensa/linux.h
+++ b/gcc/config/xtensa/linux.h
@@ -1,6 +1,6 @@
 /* Xtensa Linux configuration.
    Derived from the configuration for GCC for Intel i386 running Linux.
-   Copyright (C) 2001 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2002 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -52,7 +52,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #undef CPP_PREDEFINES
 #define CPP_PREDEFINES \
  "-D__XTENSA__ -D__ELF__ -Acpu=xtensa -Amachine=xtensa \
-  -Dunix -Dlinux -Asystem=posix"
+  -Dunix -Dgnu_linux -Dlinux -Asystem=posix"
 
 #undef LOCAL_LABEL_PREFIX
 #define LOCAL_LABEL_PREFIX	"."