1 /* Base configuration file for all FreeBSD targets. 2 Copyright (C) 1999, 2000, 2001, 2004, 2005, 2007, 2009, 2011 3 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3, or (at your option) 10 any later version. 11 12 GCC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 /* Common FreeBSD configuration. 27 All FreeBSD architectures should include this file, which will specify 28 their commonalities. 29 Adapted from gcc/config/freebsd.h by 30 David O'Brien <obrien@FreeBSD.org> 31 Loren J. Rittle <ljrittle@acm.org>. */ 32 33 34 /* In case we need to know. */ 35 #define USING_CONFIG_FREEBSD_SPEC 1 36 37 /* This defines which switch letters take arguments. On FreeBSD, most of 38 the normal cases (defined in gcc.c) apply, and we also have -h* and 39 -z* options (for the linker) (coming from SVR4). 40 We also have -R (alias --rpath), no -z, --soname (-h), --assert etc. */ 41 42 #define FBSD_SWITCH_TAKES_ARG(CHAR) \ 43 (DEFAULT_SWITCH_TAKES_ARG (CHAR) \ 44 || (CHAR) == 'h' \ 45 || (CHAR) == 'z' /* ignored by ld */ \ 46 || (CHAR) == 'R') 47 48 /* This defines which multi-letter switches take arguments. */ 49 50 #define FBSD_WORD_SWITCH_TAKES_ARG(STR) \ 51 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 52 || !strcmp ((STR), "rpath") || !strcmp ((STR), "rpath-link") \ 53 || !strcmp ((STR), "soname") || !strcmp ((STR), "defsym") \ 54 || !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker")) 55 56 #define FBSD_TARGET_OS_CPP_BUILTINS() \ 57 do \ 58 { \ 59 builtin_define_with_int_value ("__FreeBSD__", FBSD_MAJOR); \ 60 builtin_define_std ("unix"); \ 61 builtin_define ("__KPRINTF_ATTRIBUTE__"); \ 62 builtin_assert ("system=unix"); \ 63 builtin_assert ("system=bsd"); \ 64 builtin_assert ("system=FreeBSD"); \ 65 FBSD_TARGET_CPU_CPP_BUILTINS(); \ 66 } \ 67 while (0) 68 69 /* Define the default FreeBSD-specific per-CPU hook code. */ 70 #define FBSD_TARGET_CPU_CPP_BUILTINS() do {} while (0) 71 72 /* Provide a CPP_SPEC appropriate for FreeBSD. We just deal with the GCC 73 option `-posix', and PIC issues. */ 74 75 #define FBSD_CPP_SPEC " \ 76 %(cpp_cpu) \ 77 %(cpp_arch) \ 78 %{posix:-D_POSIX_SOURCE}" 79 80 /* Provide a STARTFILE_SPEC appropriate for FreeBSD. Here we add 81 the magical crtbegin.o file (see crtstuff.c) which provides part 82 of the support for getting C++ file-scope static object constructed 83 before entering `main'. */ 84 85 #define FBSD_STARTFILE_SPEC \ 86 "%{!shared: \ 87 %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \ 88 %{!p:%{profile:gcrt1.o%s} \ 89 %{!profile:crt1.o%s}}}} \ 90 crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}" 91 92 /* Provide a ENDFILE_SPEC appropriate for FreeBSD. Here we tack on 93 the magical crtend.o file (see crtstuff.c) which provides part of 94 the support for getting C++ file-scope static object constructed 95 before entering `main', followed by a normal "finalizer" file, 96 `crtn.o'. */ 97 98 #define FBSD_ENDFILE_SPEC \ 99 "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s" 100 101 /* Provide a LIB_SPEC appropriate for FreeBSD as configured and as 102 required by the user-land thread model. Before __FreeBSD_version 103 500016, select the appropriate libc, depending on whether we're 104 doing profiling or need threads support. At __FreeBSD_version 105 500016 and later, when threads support is requested include both 106 -lc and the threading lib instead of only -lc_r. To make matters 107 interesting, we can't actually use __FreeBSD_version provided by 108 <osreldate.h> directly since it breaks cross-compiling. As a final 109 twist, make it a hard error if -pthread is provided on the command 110 line and gcc was configured with --disable-threads (this will help 111 avoid bug reports from users complaining about threading when they 112 misconfigured the gcc bootstrap but are later consulting FreeBSD 113 manual pages that refer to the mythical -pthread option). */ 114 115 /* Provide a LIB_SPEC appropriate for FreeBSD. Just select the appropriate 116 libc, depending on whether we're doing profiling or need threads support. 117 (similar to the default, except no -lg, and no -p). */ 118 119 #ifdef FBSD_NO_THREADS 120 #define FBSD_LIB_SPEC " \ 121 %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \ 122 is built with the --enable-threads configure-time option.} \ 123 %{!shared: \ 124 %{!pg: -lc} \ 125 %{pg: -lc_p} \ 126 }" 127 #else 128 #if FBSD_MAJOR < 5 129 #define FBSD_LIB_SPEC " \ 130 %{!shared: \ 131 %{!pg: \ 132 %{!pthread:-lc} \ 133 %{pthread:-lc_r}} \ 134 %{pg: \ 135 %{!pthread:-lc_p} \ 136 %{pthread:-lc_r_p}} \ 137 }" 138 #else 139 #define FBSD_LIB_SPEC " \ 140 %{!shared: \ 141 %{!pg: %{pthread:-lpthread} -lc} \ 142 %{pg: %{pthread:-lpthread_p} -lc_p} \ 143 } \ 144 %{shared: \ 145 %{pthread:-lpthread} -lc \ 146 }" 147 #endif 148 #endif 149 150 #if FBSD_MAJOR < 6 151 #define FBSD_DYNAMIC_LINKER "/usr/libexec/ld-elf.so.1" 152 #else 153 #define FBSD_DYNAMIC_LINKER "/libexec/ld-elf.so.1" 154 #endif 155 156 #if defined(HAVE_LD_EH_FRAME_HDR) && !defined(LINK_EH_SPEC) 157 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} " 158 #endif 159 160 /* Use --as-needed -lgcc_s for eh support. */ 161 #ifdef HAVE_LD_AS_NEEDED 162 #define USE_LD_AS_NEEDED 1 163 #endif 164