gcc/config/linux.h

/* Definitions for Linux-based GNU systems with ELF format
   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
   Contributed by Eric Youngdale.
   Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).

This file is part of GNU CC.

GNU CC 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,
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.  */

/* Don't assume anything about the header files. */
#define NO_IMPLICIT_EXTERN_C

/* 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"

#undef MD_EXEC_PREFIX
#undef MD_STARTFILE_PREFIX

/* 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'. */
   
#undef	STARTFILE_SPEC
#ifdef USE_GNULIBC_1
#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}"
#else
#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 %{static:crtbeginT.o%s}\
   %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.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
   provides part of the support for getting C++ file-scope static
   object constructed before entering `main', followed by a normal
   GNU/Linux "finalizer" file, `crtn.o'.  */

#undef	ENDFILE_SPEC
#define ENDFILE_SPEC \
  "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"

/* This is for -profile to use -lc_p instead of -lc. */
#ifndef CC1_SPEC
#define CC1_SPEC "%{profile:-p}"
#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}}"
#endif
#else
#define LIB_SPEC \
  "%{!shared: \
     %{p:-lgmon -lc_p} %{pg:-lgmon -lc_p} \
       %{!p:%{!pg:%{!g*:-lc} %{g*:-lg}}}}"
#endif

#if !defined(USE_GNULIBC_1) && 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