freebsd.h revision 50048
10Sduke/* $Id: freebsd.h,v 1.17 1999/08/15 22:02:47 obrien Exp $ */ 2553Sohair/* Base configuration file for all FreeBSD targets. 30Sduke Copyright (C) 1999 Free Software Foundation, Inc. 40Sduke 50SdukeThis file is part of GNU CC. 60Sduke 70SdukeGNU CC is free software; you can redistribute it and/or modify 80Sdukeit under the terms of the GNU General Public License as published by 90Sdukethe Free Software Foundation; either version 2, or (at your option) 100Sdukeany later version. 110Sduke 120SdukeGNU CC is distributed in the hope that it will be useful, 130Sdukebut WITHOUT ANY WARRANTY; without even the implied warranty of 140SdukeMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 150SdukeGNU General Public License for more details. 160Sduke 170SdukeYou should have received a copy of the GNU General Public License 180Sdukealong with GNU CC; see the file COPYING. If not, write to 19553Sohairthe Free Software Foundation, 59 Temple Place - Suite 330, 20553SohairBoston, MA 02111-1307, USA. */ 21553Sohair 220Sduke/* Common FreeBSD configuration. 230Sduke All FreeBSD architectures should include this file, which will specify 240Sduke their commonalities. 250Sduke Adapted from /usr/src/contrib/gcc/config/i386/freebsd.h & 260Sduke egcs/gcc/config/i386/freebsd-elf.h version by David O'Brien */ 270Sduke 280Sduke 290Sduke/* Don't assume anything about the header files. */ 30288Sdarcy#undef NO_IMPLICIT_EXTERN_C 310Sduke#define NO_IMPLICIT_EXTERN_C 320Sduke 330Sduke/* This defines which switch letters take arguments. On FreeBSD, most of 340Sduke the normal cases (defined in gcc.c) apply, and we also have -h* and 350Sduke -z* options (for the linker) (comming from svr4). 360Sduke We also have -R (alias --rpath), no -z, --soname (-h), --assert etc. */ 370Sduke 380Sduke#define FBSD_SWITCH_TAKES_ARG(CHAR) \ 390Sduke (DEFAULT_SWITCH_TAKES_ARG (CHAR) \ 400Sduke || (CHAR) == 'h' \ 410Sduke || (CHAR) == 'z' /* ignored by ld */ \ 420Sduke || (CHAR) == 'R') 430Sduke 440Sduke#undef SWITCH_TAKES_ARG 450Sduke#define SWITCH_TAKES_ARG(CHAR) (FBSD_SWITCH_TAKES_ARG(CHAR)) 460Sduke 470Sduke#define FBSD_WORD_SWITCH_TAKES_ARG(STR) \ 480Sduke (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 490Sduke || !strcmp (STR, "rpath") || !strcmp (STR, "rpath-link") \ 500Sduke || !strcmp (STR, "soname") || !strcmp (STR, "defsym") \ 510Sduke || !strcmp (STR, "assert") || !strcmp (STR, "dynamic-linker")) 520Sduke 530Sduke#undef WORD_SWITCH_TAKES_ARG 540Sduke#define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR)) 550Sduke 560Sduke/* Place spaces around this string. We depend on string splicing to produce 57 the final CPP_PREDEFINES value. */ 58#define CPP_FBSD_PREDEFINES " -Dunix -D__FreeBSD__=4 -D__FreeBSD_cc_version=400002 -Asystem(unix) -Asystem(FreeBSD) " 59 60/* Provide a LIB_SPEC appropriate for FreeBSD. Just select the appropriate 61 libc, depending on whether we're doing profiling. 62 (like the default, except no -lg, and no -p). */ 63#undef LIB_SPEC 64#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}}}" 65 66 67/* Code generation parameters. */ 68 69/* Don't default to pcc-struct-return, because gcc is the only compiler, and 70 we want to retain compatibility with older gcc versions 71 (even though the svr4 ABI for the i386 says that records and unions are 72 returned in memory). */ 73#undef DEFAULT_PCC_STRUCT_RETURN 74#define DEFAULT_PCC_STRUCT_RETURN 0 75 76/* Ensure we the configuration knows our system correctly so we can link with 77 libraries compiled with the native cc. */ 78#undef NO_DOLLAR_IN_LABEL 79 80/* Use more efficient ``thunks'' to implement C++ vtables. XXX note that 81 this setting is claimed to have a few bugs by the EGCS maintainers. They 82 believe the bugs will be worked out in EGCS 1.2. */ 83#undef DEFAULT_VTABLE_THUNKS 84#define DEFAULT_VTABLE_THUNKS 1 85 86/* This is BSD, so we want the DBX format. */ 87#define DBX_DEBUGGING_INFO 88 89/* Use stabs instead of DWARF debug format. */ 90#undef PREFERRED_DEBUGGING_TYPE 91#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 92 93 94/* Miscellaneous parameters. */ 95 96/* Tell libgcc2.c that FreeBSD targets support atexit(3). */ 97#define HAVE_ATEXIT 98 99/* Our malloc can allocte pagesized blocks efficiently. The default size 100 of 4072 bytes is not optimal on the i386 nor the Alpha. */ 101#define OBSTACK_CHUNK_SIZE (getpagesize()) 102