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109 lines
4.0 KiB
C
109 lines
4.0 KiB
C
/* $Id: freebsd.h,v 1.5 1999/08/16 00:12:21 obrien Exp $ */
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/* Base configuration file for all FreeBSD targets.
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Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Common FreeBSD configuration.
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All FreeBSD architectures should include this file, which will specify
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their commonalities.
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Adapted from /usr/src/contrib/gcc/config/i386/freebsd.h &
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egcs/gcc/config/i386/freebsd-elf.h version by David O'Brien */
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/* Don't assume anything about the header files. */
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#undef NO_IMPLICIT_EXTERN_C
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#define NO_IMPLICIT_EXTERN_C
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/* This defines which switch letters take arguments. On FreeBSD, most of
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the normal cases (defined in gcc.c) apply, and we also have -h* and
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-z* options (for the linker) (comming from svr4).
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We also have -R (alias --rpath), no -z, --soname (-h), --assert etc. */
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#define FBSD_SWITCH_TAKES_ARG(CHAR) \
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(DEFAULT_SWITCH_TAKES_ARG (CHAR) \
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|| (CHAR) == 'h' \
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|| (CHAR) == 'z' /* ignored by ld */ \
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|| (CHAR) == 'R')
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#undef SWITCH_TAKES_ARG
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#define SWITCH_TAKES_ARG(CHAR) (FBSD_SWITCH_TAKES_ARG(CHAR))
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#define FBSD_WORD_SWITCH_TAKES_ARG(STR) \
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(DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
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|| !strcmp (STR, "rpath") || !strcmp (STR, "rpath-link") \
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|| !strcmp (STR, "soname") || !strcmp (STR, "defsym") \
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|| !strcmp (STR, "assert") || !strcmp (STR, "dynamic-linker"))
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#undef WORD_SWITCH_TAKES_ARG
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#define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR))
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/* Place spaces around this string. We depend on string splicing to produce
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the final CPP_PREDEFINES value. */
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#define CPP_FBSD_PREDEFINES " -Dunix -D__FreeBSD__ -Asystem(unix) -Asystem(FreeBSD) "
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/* Provide a LIB_SPEC appropriate for FreeBSD. Just select the appropriate
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libc, depending on whether we're doing profiling or need threads support.
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(simular to the default, except no -lg, and no -p). */
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#undef LIB_SPEC
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#define LIB_SPEC "%{!shared: \
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%{!pg:%{!pthread:%{!kthread:-lc} \
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%{kthread:-lpthread -lc}} \
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%{pthread:-lc_r}} \
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%{pg:%{!pthread:%{!kthread:-lc_p} \
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%{kthread:-lpthread_p -lc_p}} \
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%{pthread:-lc_r_p}}}"
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#ifdef COMMENT_OUT /* only redefine LIBGCC_SPEC for our native GCC */
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/* Tell gcc to locate libgcc.a for us according to the -m rules. */
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#undef LIBGCC_SPEC
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#define LIBGCC_SPEC \
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"%{!shared:%{!pthread:%{!kthread:libgcc.a%s}}%{pthread|kthread:libgcc_r.a%s}}"
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#endif
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/* Code generation parameters. */
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/* Don't default to pcc-struct-return, because gcc is the only compiler, and
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we want to retain compatibility with older gcc versions
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(even though the svr4 ABI for the i386 says that records and unions are
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returned in memory). */
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#undef DEFAULT_PCC_STRUCT_RETURN
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#define DEFAULT_PCC_STRUCT_RETURN 0
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/* Ensure we the configuration knows our system correctly so we can link with
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libraries compiled with the native cc. */
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#undef NO_DOLLAR_IN_LABEL
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/* Use more efficient ``thunks'' to implement C++ vtables. */
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#undef DEFAULT_VTABLE_THUNKS
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#define DEFAULT_VTABLE_THUNKS 1
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/* Miscellaneous parameters. */
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/* Tell libgcc2.c that FreeBSD targets support atexit(3). */
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#define HAVE_ATEXIT
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#ifdef BOOTSTRAP_BOMBS_ON_CURRENT
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/* Our malloc can allocte pagesized blocks efficiently. The default size
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of 4072 bytes is not optimal on the i386 nor the Alpha. */
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#define OBSTACK_CHUNK_SIZE (getpagesize())
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#endif
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