freebsd.h revision 48474
1/* $Id: freebsd.h,v 1.13 1999/06/28 09:05:56 obrien Exp $ */ 2/* Base configuration file for all FreeBSD targets. 3 Copyright (C) 1999 Free Software Foundation, Inc. 4 5This file is part of GNU CC. 6 7GNU CC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU CC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU CC; see the file COPYING. If not, write to 19the Free Software Foundation, 59 Temple Place - Suite 330, 20Boston, MA 02111-1307, USA. */ 21 22/* Common FreeBSD configuration. 23 All FreeBSD architectures should include this file, which will specify 24 their commonalities. 25 Adapted from /usr/src/contrib/gcc/config/i386/freebsd.h & 26 egcs/gcc/config/i386/freebsd-elf.h version by David O'Brien */ 27 28 29/* Don't assume anything about the header files. */ 30#undef NO_IMPLICIT_EXTERN_C 31#define NO_IMPLICIT_EXTERN_C 32 33/* This defines which switch letters take arguments. On FreeBSD, most of 34 the normal cases (defined in gcc.c) apply, and we also have -h* and 35 -z* options (for the linker) (comming from svr4). 36 We also have -R (alias --rpath), no -z, --soname (-h), --assert etc. */ 37 38#define FBSD_SWITCH_TAKES_ARG(CHAR) \ 39 (DEFAULT_SWITCH_TAKES_ARG (CHAR) \ 40 || (CHAR) == 'h' \ 41 || (CHAR) == 'z' /* ignored by ld */ \ 42 || (CHAR) == 'R') 43 44#define FBSD_WORD_SWITCH_TAKES_ARG(STR) \ 45 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 46 || !strcmp (STR, "rpath") || !strcmp (STR, "rpath-link") \ 47 || !strcmp (STR, "soname") || !strcmp (STR, "defsym") \ 48 || !strcmp (STR, "assert") || !strcmp (STR, "dynamic-linker")) 49 50/* Place spaces around this string. We depend on string splicing to produce 51 the final CPP_PREDEFINES value. */ 52#define CPP_FBSD_PREDEFINES " -Dunix -D__FreeBSD__=4 -D__FreeBSD_cc_version=400002 -Asystem(unix) -Asystem(FreeBSD) " 53 54/* Provide a LIB_SPEC appropriate for FreeBSD. Just select the appropriate 55 libc, depending on whether we're doing profiling. 56 (like the default, except no -lg, and no -p). */ 57#undef LIB_SPEC 58#define LIB_SPEC "%{!shared:%{!pg:%{!pthread:%{!kthread:-lc}%{kthread:-lpthread -lc}}%{pthread:-lc_r}}%{pg:%{!pthread:%{!kthread:-lc_p}%{kthread:-lpthread_p -lc_p}}%{pthread:-lc_r_p}}}" 59 60/* Let gcc locate this for us according to the -m rules. */ 61#undef LIBGCC_SPEC 62#define LIBGCC_SPEC \ 63 "%{!shared:%{!pthread:%{!kthread:libgcc.a%s}}%{pthread|kthread:libgcc_r.a%s}}" 64 65 66/* Code generation parameters. */ 67 68/* Don't default to pcc-struct-return, because gcc is the only compiler, and 69 we want to retain compatibility with older gcc versions 70 (even though the svr4 ABI for the i386 says that records and unions are 71 returned in memory). */ 72#undef DEFAULT_PCC_STRUCT_RETURN 73#define DEFAULT_PCC_STRUCT_RETURN 0 74 75/* Ensure we the configuration knows our system correctly so we can link with 76 libraries compiled with the native cc. */ 77#undef NO_DOLLAR_IN_LABEL 78 79/* Use more efficient ``thunks'' to implement C++ vtables. XXX note that 80 this setting is claimed to have a few bugs by the EGCS maintainers. They 81 believe the bugs will be worked out in EGCS 1.2. */ 82#undef DEFAULT_VTABLE_THUNKS 83#define DEFAULT_VTABLE_THUNKS 1 84 85/* Our malloc can allocte pagesized blocks efficiently. The default size 86 of 4072 bytes is not optimal on the i386 nor the Alpha. */ 87#define OBSTACK_CHUNK_SIZE (getpagesize()) 88 89 90/* Miscellaneous parameters. */ 91 92/* Tell libgcc2.c that FreeBSD targets support atexit(3). */ 93#define HAVE_ATEXIT 94