1 /* Definitions for Linux-based GNU systems with ELF format 2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004 3 Free Software Foundation, Inc. 4 Contributed by Eric Youngdale. 5 Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org). 6 7 This file is part of GCC. 8 9 GCC is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2, or (at your option) 12 any later version. 13 14 GCC is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GCC; see the file COPYING. If not, write to 21 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 22 Boston, MA 02110-1301, USA. */ 23 24 /* Don't assume anything about the header files. */ 25 #define NO_IMPLICIT_EXTERN_C 26 27 #undef ASM_APP_ON 28 #define ASM_APP_ON "#APP\n" 29 30 #undef ASM_APP_OFF 31 #define ASM_APP_OFF "#NO_APP\n" 32 33 #undef MD_EXEC_PREFIX 34 #undef MD_STARTFILE_PREFIX 35 36 /* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add 37 the GNU/Linux magical crtbegin.o file (see crtstuff.c) which 38 provides part of the support for getting C++ file-scope static 39 object constructed before entering `main'. */ 40 41 #undef STARTFILE_SPEC 42 #if defined HAVE_LD_PIE 43 #define STARTFILE_SPEC \ 44 "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \ 45 crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" 46 #else 47 #define STARTFILE_SPEC \ 48 "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \ 49 crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" 50 #endif 51 52 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on 53 the GNU/Linux magical crtend.o file (see crtstuff.c) which 54 provides part of the support for getting C++ file-scope static 55 object constructed before entering `main', followed by a normal 56 GNU/Linux "finalizer" file, `crtn.o'. */ 57 58 #undef ENDFILE_SPEC 59 #define ENDFILE_SPEC \ 60 "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s" 61 62 /* This is for -profile to use -lc_p instead of -lc. */ 63 #ifndef CC1_SPEC 64 #define CC1_SPEC "%{profile:-p}" 65 #endif 66 67 /* The GNU C++ standard library requires that these macros be defined. */ 68 #undef CPLUSPLUS_CPP_SPEC 69 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" 70 71 #undef LIB_SPEC 72 #define LIB_SPEC \ 73 "%{pthread:-lpthread} \ 74 %{shared:-lc} \ 75 %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}" 76 77 #define LINUX_TARGET_OS_CPP_BUILTINS() \ 78 do { \ 79 builtin_define ("__gnu_linux__"); \ 80 builtin_define_std ("linux"); \ 81 builtin_define_std ("unix"); \ 82 builtin_assert ("system=linux"); \ 83 builtin_assert ("system=unix"); \ 84 builtin_assert ("system=posix"); \ 85 } while (0) 86 87 #if defined(HAVE_LD_EH_FRAME_HDR) 88 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} " 89 #endif 90 91 /* Define this so we can compile MS code for use with WINE. */ 92 #define HANDLE_PRAGMA_PACK_PUSH_POP 93 94 #define LINK_GCC_C_SEQUENCE_SPEC \ 95 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" 96 97 /* Use --as-needed -lgcc_s for eh support. */ 98 #ifdef HAVE_LD_AS_NEEDED 99 #define USE_LD_AS_NEEDED 1 100 #endif 101 102 /* Determine whether the entire c99 runtime 103 is present in the runtime library. */ 104 #define TARGET_C99_FUNCTIONS 1 105 106 #define TARGET_POSIX_IO 107