/* Definitions for Linux-based GNU systems with ELF format
- Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006
+ Free Software Foundation, Inc.
Contributed by Eric Youngdale.
- Modified for stabs-in-ELF by H.J. Lu.
+ Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
-/* Don't assume anything about the header files. */
+/* Don't assume anything about the header files. */
#define NO_IMPLICIT_EXTERN_C
-#undef HAVE_ATEXIT
-#define HAVE_ATEXIT
-
-/* GNU/Linux uses ctype from glibc.a. I am not sure how complete it is.
- For now, we play safe. It may change later. */
-
-#if 0
-#undef MULTIBYTE_CHARS
-#define MULTIBYTE_CHARS 1
-#endif
-
#undef ASM_APP_ON
#define ASM_APP_ON "#APP\n"
#undef ASM_APP_OFF
#define ASM_APP_OFF "#NO_APP\n"
-#define SET_ASM_OP ".set"
-
-/* Use stabs instead of DWARF debug format. */
-#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
-#include "svr4.h"
-
#undef MD_EXEC_PREFIX
#undef MD_STARTFILE_PREFIX
-/* Output at beginning of assembler file. */
-/* The .file command should always begin the output. */
-#undef ASM_FILE_START
-#define ASM_FILE_START(FILE) \
- do { \
- output_file_directive (FILE, main_input_filename); \
- fprintf (FILE, "\t.version\t\"01.01\"\n"); \
- } while (0)
-
/* 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
- object constructed before entering `main'. */
+ object constructed before entering `main'. */
#undef STARTFILE_SPEC
+#if defined HAVE_LD_PIE
#define STARTFILE_SPEC \
- "%{!shared: \
- %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
- %{!p:%{profile:gcrt1.o%s} \
- %{!profile:crt1.o%s}}}} \
- crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
+ "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
+ crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+#else
+#define STARTFILE_SPEC \
+ "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
+ crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+#endif
/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
the GNU/Linux magical crtend.o file (see crtstuff.c) which
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
- "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
+ "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
-/* This is for -profile to use -lc_p instead of -lc. */
+/* This is for -profile to use -lc_p instead of -lc. */
#ifndef CC1_SPEC
#define CC1_SPEC "%{profile:-p}"
#endif
-#ifndef USE_GNULIBC_1
-#undef DEFAULT_VTABLE_THUNKS
-#define DEFAULT_VTABLE_THUNKS 1
-#endif
+/* The GNU C++ standard library requires that these macros be defined. */
+#undef CPLUSPLUS_CPP_SPEC
+#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
#undef LIB_SPEC
-/* We no longer link with libc_p.a or libg.a by default. If you
- want to profile or debug the GNU/Linux C library, please add
- -profile or -ggdb to LDFLAGS at the link time, respectively. */
-#if 1
-#ifdef USE_GNULIBC_1
-#define LIB_SPEC \
- "%{!shared: %{p:-lgmon} %{pg:-lgmon} %{profile:-lgmon -lc_p} \
- %{!profile:%{!ggdb:-lc} %{ggdb:-lg}}}"
-#else
#define LIB_SPEC \
- "%{shared: -lc} \
- %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
- %{profile:-lc_p} %{!profile: -lc}}"
+ "%{pthread:-lpthread} \
+ %{shared:-lc} \
+ %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
+
+#define LINUX_TARGET_OS_CPP_BUILTINS() \
+ do { \
+ builtin_define ("__gnu_linux__"); \
+ builtin_define_std ("linux"); \
+ builtin_define_std ("unix"); \
+ builtin_assert ("system=linux"); \
+ builtin_assert ("system=unix"); \
+ builtin_assert ("system=posix"); \
+ } while (0)
+
+#if defined(HAVE_LD_EH_FRAME_HDR)
+#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
+#endif
+
+/* Define this so we can compile MS code for use with WINE. */
+#define HANDLE_PRAGMA_PACK_PUSH_POP
+
+#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
+
+/* Determine which dynamic linker to use depending on whether GLIBC or
+ uClibc is the default C library and whether -muclibc or -mglibc has
+ been passed to change the default. */
+#if UCLIBC_DEFAULT
+#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
#else
-#define LIB_SPEC \
- "%{!shared: \
- %{p:-lgmon -lc_p} %{pg:-lgmon -lc_p} \
- %{!p:%{!pg:%{!g*:-lc} %{g*:-lg}}}}"
+#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
#endif
+
+/* For most targets the following definitions suffice;
+ GLIBC_DYNAMIC_LINKER must be defined for each target using them, or
+ GLIBC_DYNAMIC_LINKER32 and GLIBC_DYNAMIC_LINKER64 for targets
+ supporting both 32-bit and 64-bit compilation. */
+#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
+#define LINUX_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
+#define LINUX_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
+#define LINUX_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
+
+/* Determine whether the entire c99 runtime
+ is present in the runtime library. */
+#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
+
+#define TARGET_POSIX_IO
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