|
0
|
1 /* Definitions for Linux-based GNU systems with ELF format
|
|
|
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006,
|
|
|
3 2007, 2009 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 3, 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 Under Section 7 of GPL version 3, you are granted additional
|
|
|
20 permissions described in the GCC Runtime Library Exception, version
|
|
|
21 3.1, as published by the Free Software Foundation.
|
|
|
22
|
|
|
23 You should have received a copy of the GNU General Public License and
|
|
|
24 a copy of the GCC Runtime Library Exception along with this program;
|
|
|
25 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
|
26 <http://www.gnu.org/licenses/>. */
|
|
|
27
|
|
|
28 /* Don't assume anything about the header files. */
|
|
|
29 #define NO_IMPLICIT_EXTERN_C
|
|
|
30
|
|
|
31 #undef ASM_APP_ON
|
|
|
32 #define ASM_APP_ON "#APP\n"
|
|
|
33
|
|
|
34 #undef ASM_APP_OFF
|
|
|
35 #define ASM_APP_OFF "#NO_APP\n"
|
|
|
36
|
|
|
37 #undef MD_EXEC_PREFIX
|
|
|
38 #undef MD_STARTFILE_PREFIX
|
|
|
39
|
|
|
40 /* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
|
|
|
41 the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
|
|
|
42 provides part of the support for getting C++ file-scope static
|
|
|
43 object constructed before entering `main'. */
|
|
|
44
|
|
|
45 #undef STARTFILE_SPEC
|
|
|
46 #if defined HAVE_LD_PIE
|
|
|
47 #define STARTFILE_SPEC \
|
|
|
48 "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
|
|
|
49 crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
|
|
|
50 #else
|
|
|
51 #define 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 #endif
|
|
|
55
|
|
|
56 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
|
|
|
57 the GNU/Linux magical crtend.o file (see crtstuff.c) which
|
|
|
58 provides part of the support for getting C++ file-scope static
|
|
|
59 object constructed before entering `main', followed by a normal
|
|
|
60 GNU/Linux "finalizer" file, `crtn.o'. */
|
|
|
61
|
|
|
62 #undef ENDFILE_SPEC
|
|
|
63 #define ENDFILE_SPEC \
|
|
|
64 "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
|
|
|
65
|
|
|
66 /* This is for -profile to use -lc_p instead of -lc. */
|
|
|
67 #ifndef CC1_SPEC
|
|
|
68 #define CC1_SPEC "%{profile:-p}"
|
|
|
69 #endif
|
|
|
70
|
|
|
71 /* The GNU C++ standard library requires that these macros be defined. */
|
|
|
72 #undef CPLUSPLUS_CPP_SPEC
|
|
|
73 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
|
|
|
74
|
|
|
75 #undef LIB_SPEC
|
|
|
76 #define LIB_SPEC \
|
|
|
77 "%{pthread:-lpthread} \
|
|
|
78 %{shared:-lc} \
|
|
|
79 %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
|
|
|
80
|
|
|
81 #define LINUX_TARGET_OS_CPP_BUILTINS() \
|
|
|
82 do { \
|
|
|
83 builtin_define ("__gnu_linux__"); \
|
|
|
84 builtin_define_std ("linux"); \
|
|
|
85 builtin_define_std ("unix"); \
|
|
|
86 builtin_assert ("system=linux"); \
|
|
|
87 builtin_assert ("system=unix"); \
|
|
|
88 builtin_assert ("system=posix"); \
|
|
|
89 } while (0)
|
|
|
90
|
|
|
91 #if defined(HAVE_LD_EH_FRAME_HDR)
|
|
|
92 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
|
|
|
93 #endif
|
|
|
94
|
|
|
95 /* Define this so we can compile MS code for use with WINE. */
|
|
|
96 #define HANDLE_PRAGMA_PACK_PUSH_POP
|
|
|
97
|
|
|
98 #undef LINK_GCC_C_SEQUENCE_SPEC
|
|
|
99 #define LINK_GCC_C_SEQUENCE_SPEC \
|
|
|
100 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
|
|
|
101
|
|
|
102 /* Use --as-needed -lgcc_s for eh support. */
|
|
|
103 #ifdef HAVE_LD_AS_NEEDED
|
|
|
104 #define USE_LD_AS_NEEDED 1
|
|
|
105 #endif
|
|
|
106
|
|
|
107 /* Determine which dynamic linker to use depending on whether GLIBC or
|
|
|
108 uClibc is the default C library and whether -muclibc or -mglibc has
|
|
|
109 been passed to change the default. */
|
|
|
110 #if UCLIBC_DEFAULT
|
|
|
111 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
|
|
|
112 #else
|
|
|
113 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
|
|
|
114 #endif
|
|
|
115
|
|
|
116 /* For most targets the following definitions suffice;
|
|
|
117 GLIBC_DYNAMIC_LINKER must be defined for each target using them, or
|
|
|
118 GLIBC_DYNAMIC_LINKER32 and GLIBC_DYNAMIC_LINKER64 for targets
|
|
|
119 supporting both 32-bit and 64-bit compilation. */
|
|
|
120 #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
|
|
|
121 #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
|
|
|
122 #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
|
|
|
123 #define LINUX_DYNAMIC_LINKER \
|
|
|
124 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
|
|
|
125 #define LINUX_DYNAMIC_LINKER32 \
|
|
|
126 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
|
|
|
127 #define LINUX_DYNAMIC_LINKER64 \
|
|
|
128 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
|
|
|
129
|
|
|
130 /* Determine whether the entire c99 runtime
|
|
|
131 is present in the runtime library. */
|
|
|
132 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
|
|
|
133
|
|
|
134 /* Whether we have sincos that follows the GNU extension. */
|
|
|
135 #define TARGET_HAS_SINCOS (OPTION_GLIBC)
|
|
|
136
|
|
|
137 #define TARGET_POSIX_IO
|
