-/* Definitions for Linux-based GNU systems with ELF format
- Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004
- Free Software Foundation, Inc.
+/* Definitions for systems using the Linux kernel, with or without
+ MMU, using ELF at the compiler level but possibly FLT for final
+ linked executables and shared libraries in some no-MMU cases, and
+ possibly with a choice of libc implementations.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006,
+ 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
Contributed by Eric Youngdale.
Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
-/* Don't assume anything about the header files. */
-#define NO_IMPLICIT_EXTERN_C
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
-#undef ASM_APP_ON
-#define ASM_APP_ON "#APP\n"
-
-#undef ASM_APP_OFF
-#define ASM_APP_OFF "#NO_APP\n"
-
-#undef MD_EXEC_PREFIX
-#undef MD_STARTFILE_PREFIX
-
-/* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
- the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
- provides part of the support for getting C++ file-scope static
- object constructed before entering `main'. */
-
-#undef STARTFILE_SPEC
-#if defined HAVE_LD_PIE
-#define STARTFILE_SPEC \
- "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
- crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+/* C libraries supported on Linux. */
+#ifdef SINGLE_LIBC
+#define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
+#define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+#define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
#else
-#define STARTFILE_SPEC \
- "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
- crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
-#endif
-
-/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
- the GNU/Linux magical crtend.o file (see crtstuff.c) which
- provides part of the support for getting C++ file-scope static
- object constructed before entering `main', followed by a normal
- GNU/Linux "finalizer" file, `crtn.o'. */
-
-#undef ENDFILE_SPEC
-#define ENDFILE_SPEC \
- "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
-
-/* This is for -profile to use -lc_p instead of -lc. */
-#ifndef CC1_SPEC
-#define CC1_SPEC "%{profile:-p}"
+#define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
+#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+#define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
#endif
-/* The GNU C++ standard library requires that these macros be defined. */
-#undef CPLUSPLUS_CPP_SPEC
-#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
-
-#undef LIB_SPEC
-#define LIB_SPEC \
- "%{pthread:-lpthread} \
- %{shared:-lc} \
- %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
-
-#define LINUX_TARGET_OS_CPP_BUILTINS() \
+#define GNU_USER_TARGET_OS_CPP_BUILTINS() \
do { \
- builtin_define ("__gnu_linux__"); \
+ if (OPTION_GLIBC) \
+ builtin_define ("__gnu_linux__"); \
builtin_define_std ("linux"); \
builtin_define_std ("unix"); \
builtin_assert ("system=linux"); \
builtin_assert ("system=posix"); \
} while (0)
-#if defined(HAVE_LD_EH_FRAME_HDR)
-#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
-#endif
-
-/* Define this so we can compile MS code for use with WINE. */
-#define HANDLE_PRAGMA_PACK_PUSH_POP
-
-#define LINK_GCC_C_SEQUENCE_SPEC \
- "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
-
-/* Use --as-needed -lgcc_s for eh support. */
-#ifdef HAVE_LD_AS_NEEDED
-#define USE_LD_AS_NEEDED 1
-#endif
-
-/* Determine whether the the entire c99 runtime
+/* Determine which dynamic linker to use depending on whether GLIBC or
+ uClibc or Bionic is the default C library and whether
+ -muclibc or -mglibc or -mbionic has been passed to change the default. */
+
+#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
+ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
+
+#if DEFAULT_LIBC == LIBC_GLIBC
+#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
+#elif DEFAULT_LIBC == LIBC_UCLIBC
+#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
+#elif DEFAULT_LIBC == LIBC_BIONIC
+#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
+#else
+#error "Unsupported DEFAULT_LIBC"
+#endif /* DEFAULT_LIBC */
+
+/* For most targets the following definitions suffice;
+ GLIBC_DYNAMIC_LINKER must be defined for each target using them, or
+ GLIBC_DYNAMIC_LINKER32 and GLIBC_DYNAMIC_LINKER64 for targets
+ supporting both 32-bit and 64-bit compilation. */
+#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKERX32 "/lib/ldx32-uClibc.so.0"
+#define BIONIC_DYNAMIC_LINKER "/system/bin/linker"
+#define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker"
+#define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64"
+#define BIONIC_DYNAMIC_LINKERX32 "/system/bin/linkerx32"
+
+#define GNU_USER_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+ BIONIC_DYNAMIC_LINKER)
+#define GNU_USER_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+ BIONIC_DYNAMIC_LINKER32)
+#define GNU_USER_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+ BIONIC_DYNAMIC_LINKER64)
+#define GNU_USER_DYNAMIC_LINKERX32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+ BIONIC_DYNAMIC_LINKERX32)
+
+/* Determine whether the entire c99 runtime
is present in the runtime library. */
-#define TARGET_C99_FUNCTIONS 1
+#undef TARGET_C99_FUNCTIONS
+#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
-#define TARGET_HAS_F_SETLKW
+/* Whether we have sincos that follows the GNU extension. */
+#undef TARGET_HAS_SINCOS
+#define TARGET_HAS_SINCOS (OPTION_GLIBC || OPTION_BIONIC)
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