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) 1995-2023 Free Software Foundation, Inc.
5 Contributed by Eric Youngdale.
6 Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
7
8This file is part of GCC.
9
10GCC is free software; you can redistribute it and/or modify
11it under the terms of the GNU General Public License as published by
12the Free Software Foundation; either version 3, or (at your option)
13any later version.
14
15GCC is distributed in the hope that it will be useful,
16but WITHOUT ANY WARRANTY; without even the implied warranty of
17MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18GNU General Public License for more details.
19
20Under Section 7 of GPL version 3, you are granted additional
21permissions described in the GCC Runtime Library Exception, version
223.1, as published by the Free Software Foundation.
23
24You should have received a copy of the GNU General Public License and
25a copy of the GCC Runtime Library Exception along with this program;
26see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
27<http://www.gnu.org/licenses/>. */
28
29#undef ASM_APP_ON
30#define ASM_APP_ON "#APP\n"
31
32#undef ASM_APP_OFF
33#define ASM_APP_OFF "#NO_APP\n"
34
35#if ENABLE_OFFLOADING == 1
36#define CRTOFFLOADBEGIN "%{fopenacc|fopenmp:crtoffloadbegin%O%s}"
37#define CRTOFFLOADEND "%{fopenacc|fopenmp:crtoffloadend%O%s}"
38#else
39#define CRTOFFLOADBEGIN ""
40#define CRTOFFLOADEND ""
41#endif
42
43#define GNU_USER_TARGET_CRTI "crti.o%s"
44#define GNU_USER_TARGET_CRTN "crtn.o%s"
45
46/* Provide a STARTFILE_SPEC appropriate for GNU userspace. Here we add
47 the GNU userspace magical crtbegin.o file (see crtstuff.c) which
48 provides part of the support for getting C++ file-scope static
49 object constructed before entering `main'. */
50
51#define GNU_USER_TARGET_STARTFILE_SPEC \
52 "%{shared:; \
53 pg|p|profile:%{static-pie:grcrt1.o%s;:gcrt1.o%s}; \
54 static:crt1.o%s; \
55 static-pie:rcrt1.o%s; \
56 " PIE_SPEC ":Scrt1.o%s; \
57 :crt1.o%s} " \
58 GNU_USER_TARGET_CRTI " \
59 %{static:crtbeginT.o%s; \
60 shared|static-pie|" PIE_SPEC ":crtbeginS.o%s; \
61 :crtbegin.o%s} \
62 %{fvtable-verify=none:%s; \
63 fvtable-verify=preinit:vtv_start_preinit.o%s; \
64 fvtable-verify=std:vtv_start.o%s} " \
65 CRTOFFLOADBEGIN
66#undef STARTFILE_SPEC
67#define STARTFILE_SPEC GNU_USER_TARGET_STARTFILE_SPEC
68
69/* Provide a ENDFILE_SPEC appropriate for GNU userspace. Here we tack on
70 the GNU userspace magical crtend.o file (see crtstuff.c) which
71 provides part of the support for getting C++ file-scope static
72 object constructed before entering `main', followed by a normal
73 GNU userspace "finalizer" file, `crtn.o'. */
74
75#define GNU_USER_TARGET_ENDFILE_SPEC \
76 "%{!static:%{fvtable-verify=none:%s; \
77 fvtable-verify=preinit:vtv_end_preinit.o%s; \
78 fvtable-verify=std:vtv_end.o%s}} \
79 %{static:crtend.o%s; \
80 shared|static-pie|" PIE_SPEC ":crtendS.o%s; \
81 :crtend.o%s} " \
82 GNU_USER_TARGET_CRTN " " \
83 CRTOFFLOADEND
84#undef ENDFILE_SPEC
85#define ENDFILE_SPEC GNU_USER_TARGET_ENDFILE_SPEC
86
87/* This is for -profile to use -lc_p instead of -lc. */
88#define GNU_USER_TARGET_CC1_SPEC "%{profile:-p}"
89#ifndef CC1_SPEC
90#define CC1_SPEC GNU_USER_TARGET_CC1_SPEC
91#endif
92
93/* The GNU C++ standard library requires that these macros be defined. */
94#undef CPLUSPLUS_CPP_SPEC
95#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
96
97#define GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC \
98 "%{shared:-lc} \
99 %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
100
101#define GNU_USER_TARGET_LIB_SPEC \
102 "%{pthread:-lpthread} " \
103 GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC
104
105#undef LIB_SPEC
106#define LIB_SPEC GNU_USER_TARGET_LIB_SPEC
107
108#if defined(HAVE_LD_EH_FRAME_HDR)
109#define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} "
110#endif
111
112#define GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC \
113 "%{static|static-pie:--start-group} %G %{!nolibc:%L} \
114 %{static|static-pie:--end-group}%{!static:%{!static-pie:%G}}"
115
116#undef LINK_GCC_C_SEQUENCE_SPEC
117#define LINK_GCC_C_SEQUENCE_SPEC GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC
118
119/* Use --as-needed -lgcc_s for eh support. */
120#ifdef HAVE_LD_AS_NEEDED
121#define USE_LD_AS_NEEDED 1
122#endif
123
124#define TARGET_POSIX_IO
125
126#undef TARGET_LIBC_HAS_FUNCTION
127#define TARGET_LIBC_HAS_FUNCTION gnu_libc_has_function
128
129/* Link -lasan early on the command line. For -static-libasan, don't link
130 it for -shared link, the executable should be compiled with -static-libasan
131 in that case, and for executable link with --{,no-}whole-archive around
132 it to force everything into the executable. And similarly for -ltsan,
133 -lhwasan, and -llsan. */
134#if defined(HAVE_LD_STATIC_DYNAMIC)
135#undef LIBASAN_EARLY_SPEC
136#define LIBASAN_EARLY_SPEC "%{!shared:libasan_preinit%O%s} " \
137 "%{static-libasan:%{!shared:" \
138 LD_STATIC_OPTION " --whole-archive -lasan --no-whole-archive " \
139 LD_DYNAMIC_OPTION "}}%{!static-libasan:-lasan}"
140#undef LIBHWASAN_EARLY_SPEC
141#define LIBHWASAN_EARLY_SPEC "%{!shared:libhwasan_preinit%O%s} " \
142 "%{static-libhwasan:%{!shared:" \
143 LD_STATIC_OPTION " --whole-archive -lhwasan --no-whole-archive " \
144 LD_DYNAMIC_OPTION "}}%{!static-libhwasan:-lhwasan}"
145#undef LIBTSAN_EARLY_SPEC
146#define LIBTSAN_EARLY_SPEC "%{!shared:libtsan_preinit%O%s} " \
147 "%{static-libtsan:%{!shared:" \
148 LD_STATIC_OPTION " --whole-archive -ltsan --no-whole-archive " \
149 LD_DYNAMIC_OPTION "}}%{!static-libtsan:-ltsan}"
150#undef LIBLSAN_EARLY_SPEC
151#define LIBLSAN_EARLY_SPEC "%{!shared:liblsan_preinit%O%s} " \
152 "%{static-liblsan:%{!shared:" \
153 LD_STATIC_OPTION " --whole-archive -llsan --no-whole-archive " \
154 LD_DYNAMIC_OPTION "}}%{!static-liblsan:-llsan}"
155#endif
156
157#undef TARGET_F951_OPTIONS
158#define TARGET_F951_OPTIONS "%{!nostdinc:\
159 %:fortran-preinclude-file(-fpre-include= math-vector-fortran.h finclude%s/)}"
160

source code of gcc/config/gnu-user.h