xref: /freebsd-10-stable/contrib/gcc/config/freebsd-spec.h

/* Base configuration file for all FreeBSD targets.
   Copyright (C) 1999, 2000, 2001, 2004, 2005 Free Software Foundation, Inc.

This file is part of GCC.

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.

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 GCC; see the file COPYING.  If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.  */

/* $FreeBSD$ */

/* Common FreeBSD configuration.
   All FreeBSD architectures should include this file, which will specify
   their commonalities.
   Adapted from gcc/config/freebsd.h by
   David O'Brien <obrien@FreeBSD.org>
   Loren J. Rittle <ljrittle@acm.org>.  */


/* In case we need to know.  */
#define USING_CONFIG_FREEBSD_SPEC 1

/* This defines which switch letters take arguments.  On FreeBSD, most of
   the normal cases (defined in gcc.c) apply, and we also have -h* and
   -z* options (for the linker) (coming from SVR4).
   We also have -R (alias --rpath), no -z, --soname (-h), --assert etc.  */

#define FBSD_SWITCH_TAKES_ARG(CHAR)					\
  (DEFAULT_SWITCH_TAKES_ARG (CHAR)					\
    || (CHAR) == 'h'							\
    || (CHAR) == 'z' /* ignored by ld */				\
    || (CHAR) == 'R')

/* This defines which multi-letter switches take arguments.  */

#define FBSD_WORD_SWITCH_TAKES_ARG(STR)					\
  (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)					\
   || !strcmp ((STR), "rpath") || !strcmp ((STR), "rpath-link")		\
   || !strcmp ((STR), "soname") || !strcmp ((STR), "defsym") 		\
   || !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker"))

#define FBSD_TARGET_OS_CPP_BUILTINS()					\
  do									\
    {									\
	builtin_define_with_int_value ("__FreeBSD__", FBSD_MAJOR);	\
	builtin_define_std ("unix");					\
	builtin_define_std ("__unix__");				\
	builtin_define ("__KPRINTF_ATTRIBUTE__");			\
	builtin_assert ("system=unix");					\
	builtin_assert ("system=bsd");					\
	builtin_assert ("system=FreeBSD");				\
	FBSD_NATIVE_TARGET_OS_CPP_BUILTINS();				\
	FBSD_TARGET_CPU_CPP_BUILTINS();					\
    }									\
  while (0)

/* Define the default FreeBSD-specific per-CPU hook code.  */
#define FBSD_TARGET_CPU_CPP_BUILTINS() do {} while (0)

#ifdef FREEBSD_NATIVE
#define FBSD_NATIVE_TARGET_OS_CPP_BUILTINS()				\
  do {									\
	builtin_define_with_int_value ("__FreeBSD_cc_version", FBSD_CC_VER); \
  } while (0)
#else
#define FBSD_NATIVE_TARGET_OS_CPP_BUILTINS()				\
  do {} while (0)
#endif

/* Provide a CPP_SPEC appropriate for FreeBSD.  We just deal with the GCC
   option `-posix', and PIC issues.  Try to detect support for the
   `long long' type.  Unfortunately the GCC spec parser will not allow us
   to properly detect the "iso9899:1990" and "iso9899:199409" forms of
   -std=c89.  Because of the ':' in the -std argument. :-(  I have left
   them in the spec as a place holder in hopes someone knows a way to make
   the detection of them work.  */

#define FBSD_CPP_SPEC "							\
  %(cpp_cpu)								\
  %(cpp_arch)								\
  %{!ansi:%{!std=c89:%{!std=iso9899.1990:%{!std=iso9899.199409:-D_LONGLONG}}}} \
  %{posix:-D_POSIX_SOURCE}"

/* Provide a STARTFILE_SPEC appropriate for FreeBSD.  Here we add the magical
   crtbegin.o file (see crtstuff.c) which provides part of the support for
   getting C++ file-scope static object constructed before entering `main'.  */

#define FBSD_STARTFILE_SPEC "\
  %{!shared: \
    %{pg:gcrt1.o%s} \
    %{!pg: \
      %{p:gcrt1.o%s} \
      %{!p: \
	%{profile:gcrt1.o%s} \
	%{!profile: \
          %{pie: Scrt1.o%s;:crt1.o%s}}}}} \
  crti.o%s \
  %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"

/* Provide an ENDFILE_SPEC appropriate for FreeBSD/i386.  Here we tack on
   our own 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 the normal "finalizer" file, `crtn.o'.  */

#define FBSD_ENDFILE_SPEC "\
  %{shared|pie:crtendS.o%s;:crtend.o%s} \
  crtn.o%s "

/* Provide a LIB_SPEC appropriate for FreeBSD as configured and as
   required by the user-land thread model.  Before __FreeBSD_version
   500016, select the appropriate libc, depending on whether we're
   doing profiling or need threads support.  At __FreeBSD_version
   500016 and later, when threads support is requested include both
   -lc and the threading lib instead of only -lc_r.  To make matters
   interesting, we can't actually use __FreeBSD_version provided by
   <osreldate.h> directly since it breaks cross-compiling.  As a final
   twist, make it a hard error if -pthread is provided on the command
   line and gcc was configured with --disable-threads (this will help
   avoid bug reports from users complaining about threading when they
   misconfigured the gcc bootstrap but are later consulting FreeBSD
   manual pages that refer to the mythical -pthread option).  */

/* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
   libc, depending on whether we're doing profiling or need threads support.
   (similar to the default, except no -lg, and no -p).  */

#ifdef FBSD_NO_THREADS
#define FBSD_LIB_SPEC "							\
  %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
is built with the --enable-threads configure-time option.}		\
  %{!shared:								\
    %{!pg: -lc}								\
    %{pg:  -lc_p}							\
  }"
#else
#include <sys/param.h>
#if __FreeBSD_version < 500016
#define FBSD_LIB_SPEC "							\
  %{!shared:								\
    %{!pg:								\
      %{!pthread:-lc}							\
      %{pthread:-lc_r}}							\
    %{pg:								\
      %{!pthread:-lc_p}							\
      %{pthread:-lc_r_p}}						\
  }"
#elif __FreeBSD_version < 700022
#define FBSD_LIB_SPEC "							\
  %{!shared:								\
    %{!pg: %{pthread:-lpthread} -lc}					\
    %{pg:  %{pthread:-lpthread_p} -lc_p}				\
  }"
#else
#define FBSD_LIB_SPEC "							\
  %{!shared:								\
    %{!pg: %{pthread:-lpthread} -lc}					\
    %{pg:  %{pthread:-lpthread_p} -lc_p}}				\
  %{shared:								\
    %{pthread:-lpthread} -lc}						\
  %{fstack-protector|fstack-protector-all:-lssp_nonshared}		\
  "
#endif
#endif

#if FBSD_MAJOR < 5
#define FBSD_DYNAMIC_LINKER "/usr/libexec/ld-elf.so.1"
#else
#define FBSD_DYNAMIC_LINKER "/libexec/ld-elf.so.1"
#endif

#if defined(HAVE_LD_EH_FRAME_HDR)
#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
#endif

/* Use --as-needed -lgcc_s for eh support.  */
#ifdef HAVE_LD_AS_NEEDED
#define USE_LD_AS_NEEDED 1
#endif

#define FBSD_SIZE_TYPE \
	(POINTER_SIZE == 64 ? "long unsigned int" : "unsigned int")
#define FBSD_PTRDIFF_TYPE \
	(POINTER_SIZE == 64 ? "long int" : "int")