7231b5a661
threatened over 2 years ago.
Why? -pthread was a hack to prevent linking to both libc and libc_r
and became unecessary when libc_r became free of libc. Now that we
have multiple thread libraries from which to choose, it is more confusing
because you can't link to more than one threads library at a time.
Things like autoconf and libtool sometimes detect -pthread and
also -lc_r, and in conjunction with ports usage of ${PTHREAD_LIBS},
really wacky things ensue when PTHREAD_LIBS is set to another
threads library. This might not be so bad if the build broke
when this happens, but it doesn't and you don't know it until
funny things happen when you run the application (or use an
affected library).
Reviewed by: obrien
179 lines
6.5 KiB
C
179 lines
6.5 KiB
C
/* Base configuration file for all FreeBSD targets.
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Copyright (C) 1999, 2000, 2001 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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/* $FreeBSD$ */
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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 gcc/config/freebsd.h by
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David O'Brien <obrien@FreeBSD.org>
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Loren J. Rittle <ljrittle@acm.org>. */
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/* In case we need to know. */
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#define USING_CONFIG_FREEBSD_SPEC 1
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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) (coming 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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/* This defines which multi-letter switches take arguments. */
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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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#define FBSD_TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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if (FBSD_MAJOR == 6) \
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builtin_define ("__FreeBSD__=6"); \
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else if (FBSD_MAJOR == 5) \
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builtin_define ("__FreeBSD__=5"); \
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else if (FBSD_MAJOR == 4) \
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builtin_define ("__FreeBSD__=4"); \
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else if (FBSD_MAJOR == 3) \
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builtin_define ("__FreeBSD__=3"); \
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else \
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builtin_define ("__FreeBSD__"); \
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builtin_define_std ("unix"); \
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builtin_define ("__ELF__"); \
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builtin_define ("__KPRINTF_ATTRIBUTE__"); \
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builtin_assert ("system=unix"); \
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builtin_assert ("system=bsd"); \
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builtin_assert ("system=FreeBSD"); \
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FBSD_NATIVE_TARGET_OS_CPP_BUILTINS(); \
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FBSD_TARGET_CPU_CPP_BUILTINS(); \
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} \
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while (0)
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/* Define the default FreeBSD-specific per-CPU hook code. */
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#define FBSD_TARGET_CPU_CPP_BUILTINS() do {} while (0)
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#ifdef FREEBSD_NATIVE
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#define FBSD_NATIVE_TARGET_OS_CPP_BUILTINS() \
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do { \
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builtin_define_std ("__FreeBSD_cc_version=500006"); \
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} while (0)
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#else
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#define FBSD_NATIVE_TARGET_OS_CPP_BUILTINS() \
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do {} while (0)
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#endif
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/* Provide a CPP_SPEC appropriate for FreeBSD. We just deal with the GCC
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option `-posix', and PIC issues. Try to detect support for the
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`long long' type. Unfortunately the GCC spec parser will not allow us
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to properly detect the "iso9899:1990" and "iso9899:199409" forms of
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-std=c89. Because of the ':' in the -std argument. :-( I have left
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them in the spec as a place holder in hopes someone knows a way to make
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the detection of them work. */
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#define FBSD_CPP_SPEC " \
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%(cpp_cpu) \
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%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} \
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%{!ansi:%{!std=c89:%{!std=iso9899.1990:%{!std=iso9899.199409:-D_LONGLONG}}}} \
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%{posix:-D_POSIX_SOURCE}"
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/* Provide a STARTFILE_SPEC appropriate for FreeBSD. Here we add the magical
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crtbegin.o file (see crtstuff.c) which provides part of the support for
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getting C++ file-scope static object constructed before entering `main'. */
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#define FBSD_STARTFILE_SPEC "\
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%{!shared: \
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%{pg:gcrt1.o%s} \
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%{!pg: \
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%{p:gcrt1.o%s} \
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%{!p: \
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%{profile:gcrt1.o%s} \
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%{!profile:crt1.o%s}}}} \
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crti.o%s \
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%{!shared:crtbegin.o%s} \
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%{shared:crtbeginS.o%s}"
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/* Provide an ENDFILE_SPEC appropriate for FreeBSD/i386. Here we tack on
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our own magical crtend.o file (see crtstuff.c) which provides part of
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the support for getting C++ file-scope static object constructed before
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entering `main', followed by the normal "finalizer" file, `crtn.o'. */
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#define FBSD_ENDFILE_SPEC "\
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%{!shared:crtend.o%s} \
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%{shared:crtendS.o%s} \
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crtn.o%s "
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/* Provide a LIB_SPEC appropriate for FreeBSD as configured and as
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required by the user-land thread model. Before __FreeBSD_version
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500016, select the appropriate libc, depending on whether we're
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doing profiling or need threads support. At __FreeBSD_version
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500016 and later, threads libraries can be linked with libc.
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Because of this, and because different (not multiple) threading
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libraries may be selected in the link option, the -pthread option
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is no longer supported. To make matters interesting, we can't
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actually use __FreeBSD_version provided by <osreldate.h> directly
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since it breaks cross-compiling. As a final twist, make it a hard
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error if -pthread is provided on the command line and gcc was
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configured with --disable-threads (this will help avoid bug reports
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from users complaining about threading when they misconfigured the
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gcc bootstrap but are later consulting FreeBSD manual pages that
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refer to the mythical -pthread option). */
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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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#ifdef FBSD_NO_THREADS
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#define FBSD_LIB_SPEC " \
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%{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
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is built with the --enable-threads configure-time option.} \
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%{!shared: \
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%{!pg: -lc} \
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%{pg: -lc_p} \
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}"
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#else
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#include <sys/param.h>
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#if __FreeBSD_version >= 500016
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#define FBSD_LIB_SPEC " \
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%{pthread: %eThe -pthread option is deprecated.} \
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%{!shared: \
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%{!pg: -lc} \
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%{pg: -lc_p} \
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}"
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#else
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#define FBSD_LIB_SPEC " \
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%{!shared: \
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%{!pg: \
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%{!pthread:-lc} \
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%{pthread:-lc_r}} \
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%{pg: \
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%{!pthread:-lc_p} \
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%{pthread:-lc_r_p}} \
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}"
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#endif
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#endif
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