1 /* Definitions for systems using, at least optionally, a GNU 2 (glibc-based) userspace or other userspace with libc derived from 3 glibc (e.g. uClibc) or for which similar specs are appropriate. 4 Copyright (C) 1995-2015 Free Software Foundation, Inc. 5 Contributed by Eric Youngdale. 6 Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org). 7 8 This file is part of GCC. 9 10 GCC is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3, or (at your option) 13 any later version. 14 15 GCC is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 Under Section 7 of GPL version 3, you are granted additional 21 permissions described in the GCC Runtime Library Exception, version 22 3.1, as published by the Free Software Foundation. 23 24 You should have received a copy of the GNU General Public License and 25 a copy of the GCC Runtime Library Exception along with this program; 26 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 27 <http://www.gnu.org/licenses/>. */ 28 29 /* Don't assume anything about the header files. */ 30 #define NO_IMPLICIT_EXTERN_C 31 32 #undef ASM_APP_ON 33 #define ASM_APP_ON "#APP\n" 34 35 #undef ASM_APP_OFF 36 #define ASM_APP_OFF "#NO_APP\n" 37 38 /* Provide a STARTFILE_SPEC appropriate for GNU userspace. Here we add 39 the GNU userspace magical crtbegin.o file (see crtstuff.c) which 40 provides part of the support for getting C++ file-scope static 41 object constructed before entering `main'. */ 42 43 #if defined HAVE_LD_PIE 44 #define GNU_USER_TARGET_STARTFILE_SPEC \ 45 "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \ 46 crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s} \ 47 %{fvtable-verify=none:%s; \ 48 fvtable-verify=preinit:vtv_start_preinit.o%s; \ 49 fvtable-verify=std:vtv_start.o%s}" 50 #else 51 #define GNU_USER_TARGET_STARTFILE_SPEC \ 52 "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \ 53 crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s} \ 54 %{fvtable-verify=none:%s; \ 55 fvtable-verify=preinit:vtv_start_preinit.o%s; \ 56 fvtable-verify=std:vtv_start.o%s}" 57 #endif 58 #undef STARTFILE_SPEC 59 #define STARTFILE_SPEC GNU_USER_TARGET_STARTFILE_SPEC 60 61 /* Provide a ENDFILE_SPEC appropriate for GNU userspace. Here we tack on 62 the GNU userspace magical crtend.o file (see crtstuff.c) which 63 provides part of the support for getting C++ file-scope static 64 object constructed before entering `main', followed by a normal 65 GNU userspace "finalizer" file, `crtn.o'. */ 66 67 #define GNU_USER_TARGET_ENDFILE_SPEC \ 68 "%{fvtable-verify=none:%s; \ 69 fvtable-verify=preinit:vtv_end_preinit.o%s; \ 70 fvtable-verify=std:vtv_end.o%s} \ 71 %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s" 72 #undef ENDFILE_SPEC 73 #define ENDFILE_SPEC GNU_USER_TARGET_ENDFILE_SPEC 74 75 /* This is for -profile to use -lc_p instead of -lc. */ 76 #define GNU_USER_TARGET_CC1_SPEC "%{profile:-p}" 77 #ifndef CC1_SPEC 78 #define CC1_SPEC GNU_USER_TARGET_CC1_SPEC 79 #endif 80 81 /* The GNU C++ standard library requires that these macros be defined. */ 82 #undef CPLUSPLUS_CPP_SPEC 83 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" 84 85 #define GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC \ 86 "%{shared:-lc} \ 87 %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}" 88 89 #define GNU_USER_TARGET_LIB_SPEC \ 90 "%{pthread:-lpthread} " \ 91 GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC 92 93 #undef LIB_SPEC 94 #define LIB_SPEC GNU_USER_TARGET_LIB_SPEC 95 96 #if defined(HAVE_LD_EH_FRAME_HDR) 97 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} " 98 #endif 99 100 #undef LINK_GCC_C_SEQUENCE_SPEC 101 #define LINK_GCC_C_SEQUENCE_SPEC \ 102 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" 103 104 /* Use --as-needed -lgcc_s for eh support. */ 105 #ifdef HAVE_LD_AS_NEEDED 106 #define USE_LD_AS_NEEDED 1 107 #endif 108 109 #define TARGET_POSIX_IO 110 111 #undef TARGET_LIBC_HAS_FUNCTION 112 #define TARGET_LIBC_HAS_FUNCTION gnu_libc_has_function 113 114 /* Link -lasan early on the command line. For -static-libasan, don't link 115 it for -shared link, the executable should be compiled with -static-libasan 116 in that case, and for executable link link with --{,no-}whole-archive around 117 it to force everything into the executable. And similarly for -ltsan 118 and -llsan. */ 119 #if defined(HAVE_LD_STATIC_DYNAMIC) 120 #undef LIBASAN_EARLY_SPEC 121 #define LIBASAN_EARLY_SPEC "%{!shared:libasan_preinit%O%s} " \ 122 "%{static-libasan:%{!shared:" \ 123 LD_STATIC_OPTION " --whole-archive -lasan --no-whole-archive " \ 124 LD_DYNAMIC_OPTION "}}%{!static-libasan:-lasan}" 125 #undef LIBTSAN_EARLY_SPEC 126 #define LIBTSAN_EARLY_SPEC "%{static-libtsan:%{!shared:" \ 127 LD_STATIC_OPTION " --whole-archive -ltsan --no-whole-archive " \ 128 LD_DYNAMIC_OPTION "}}%{!static-libtsan:-ltsan}" 129 #undef LIBLSAN_EARLY_SPEC 130 #define LIBLSAN_EARLY_SPEC "%{static-liblsan:%{!shared:" \ 131 LD_STATIC_OPTION " --whole-archive -llsan --no-whole-archive " \ 132 LD_DYNAMIC_OPTION "}}%{!static-liblsan:-llsan}" 133 #endif 134