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authorWaldemar Brodkorb <wbx@openadk.org>2015-07-13 15:56:03 -0500
committerWaldemar Brodkorb <wbx@openadk.org>2015-07-13 15:57:21 -0500
commit18c77efc35de9ffd65b99a1ab792fdb88a23a304 (patch)
tree74f70fc0ab17311d7088e3df4fa1cb354502ab15 /toolchain/gcc/patches
parent3574407229f50681b91f071ffdee62fdb0c589e6 (diff)
add basic toolchain support for or1k arch with musl libc
Diffstat (limited to 'toolchain/gcc/patches')
-rw-r--r--toolchain/gcc/patches/4.9.2-or1k/cflags.patch222
-rw-r--r--toolchain/gcc/patches/4.9.2-or1k/gcc.musl40143
2 files changed, 40365 insertions, 0 deletions
diff --git a/toolchain/gcc/patches/4.9.2-or1k/cflags.patch b/toolchain/gcc/patches/4.9.2-or1k/cflags.patch
new file mode 100644
index 000000000..d4119cd39
--- /dev/null
+++ b/toolchain/gcc/patches/4.9.2-or1k/cflags.patch
@@ -0,0 +1,222 @@
+diff -Nur gcc-4.9.1.orig/gcc/c-family/c-opts.c gcc-4.9.1/gcc/c-family/c-opts.c
+--- gcc-4.9.1.orig/gcc/c-family/c-opts.c 2014-05-06 12:48:08.000000000 +0200
++++ gcc-4.9.1/gcc/c-family/c-opts.c 2014-08-05 15:54:02.000000000 +0200
+@@ -105,6 +105,9 @@
+ /* Whether any standard preincluded header has been preincluded. */
+ static bool done_preinclude;
+
++/* Check if a port honours COPTS. */
++static int honour_copts = 0;
++
+ static void handle_OPT_d (const char *);
+ static void set_std_cxx98 (int);
+ static void set_std_cxx11 (int);
+@@ -492,6 +495,12 @@
+ flag_no_builtin = !value;
+ break;
+
++ case OPT_fhonour_copts:
++ if (c_language == clk_c) {
++ honour_copts++;
++ }
++ break;
++
+ case OPT_fconstant_string_class_:
+ constant_string_class_name = arg;
+ break;
+@@ -1048,6 +1057,47 @@
+ return false;
+ }
+
++ if (c_language == clk_c) {
++ char *ev = getenv ("GCC_HONOUR_COPTS");
++ int evv;
++ if (ev == NULL)
++ evv = -1;
++ else if ((*ev == '0') || (*ev == '\0'))
++ evv = 0;
++ else if (*ev == '1')
++ evv = 1;
++ else if (*ev == '2')
++ evv = 2;
++ else if (*ev == 's')
++ evv = -1;
++ else {
++ warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
++ evv = 1; /* maybe depend this on something like MIRBSD_NATIVE? */
++ }
++ if (evv == 1) {
++ if (honour_copts == 0) {
++ error ("someone does not honour COPTS at all in lenient mode");
++ return false;
++ } else if (honour_copts != 1) {
++ warning (0, "someone does not honour COPTS correctly, passed %d times",
++ honour_copts);
++ }
++ } else if (evv == 2) {
++ if (honour_copts == 0) {
++ error ("someone does not honour COPTS at all in strict mode");
++ return false;
++ } else if (honour_copts != 1) {
++ error ("someone does not honour COPTS correctly, passed %d times",
++ honour_copts);
++ return false;
++ }
++ } else if (evv == 0) {
++ if (honour_copts != 1)
++ inform (0, "someone does not honour COPTS correctly, passed %d times",
++ honour_copts);
++ }
++ }
++
+ return true;
+ }
+
+diff -Nur gcc-4.9.1.orig/gcc/c-family/c.opt gcc-4.9.1/gcc/c-family/c.opt
+--- gcc-4.9.1.orig/gcc/c-family/c.opt 2014-04-03 15:41:55.000000000 +0200
++++ gcc-4.9.1/gcc/c-family/c.opt 2014-08-05 15:54:02.000000000 +0200
+@@ -391,6 +391,10 @@
+ C ObjC C++ ObjC++ Var(warn_float_conversion) LangEnabledBy(C ObjC C++ ObjC++,Wconversion)
+ Warn for implicit type conversions that cause loss of floating point precision
+
++Werror-maybe-reset
++C ObjC C++ ObjC++
++; Documented in common.opt
++
+ Wfloat-equal
+ C ObjC C++ ObjC++ Var(warn_float_equal) Warning
+ Warn if testing floating point numbers for equality
+@@ -972,6 +976,9 @@
+ fhonor-std
+ C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+
++fhonour-copts
++C ObjC C++ ObjC++ RejectNegative
++
+ fhosted
+ C ObjC
+ Assume normal C execution environment
+diff -Nur gcc-4.9.1.orig/gcc/common.opt gcc-4.9.1/gcc/common.opt
+--- gcc-4.9.1.orig/gcc/common.opt 2014-04-07 15:27:39.000000000 +0200
++++ gcc-4.9.1/gcc/common.opt 2014-08-05 15:54:02.000000000 +0200
+@@ -549,6 +549,10 @@
+ Common Joined
+ Treat specified warning as error
+
++Werror-maybe-reset
++Common
++If environment variable GCC_NO_WERROR is set, act as -Wno-error
++
+ Wextra
+ Common Var(extra_warnings) Warning
+ Print extra (possibly unwanted) warnings
+@@ -1287,6 +1291,9 @@
+ Common Report Var(flag_guess_branch_prob) Optimization
+ Enable guessing of branch probabilities
+
++fhonour-copts
++Common RejectNegative
++
+ ; Nonzero means ignore `#ident' directives. 0 means handle them.
+ ; Generate position-independent code for executables if possible
+ ; On SVR4 targets, it also controls whether or not to emit a
+diff -Nur gcc-4.9.1.orig/gcc/doc/cppopts.texi gcc-4.9.1/gcc/doc/cppopts.texi
+--- gcc-4.9.1.orig/gcc/doc/cppopts.texi 2014-01-02 23:23:26.000000000 +0100
++++ gcc-4.9.1/gcc/doc/cppopts.texi 2014-08-05 15:54:02.000000000 +0200
+@@ -163,6 +163,11 @@
+ Make all warnings into hard errors. Source code which triggers warnings
+ will be rejected.
+
++ at item -Werror-maybe-reset
++ at opindex Werror-maybe-reset
++Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
++variable is set to anything other than 0 or empty.
++
+ @item -Wsystem-headers
+ @opindex Wsystem-headers
+ Issue warnings for code in system headers. These are normally unhelpful
+diff -Nur gcc-4.9.1.orig/gcc/doc/invoke.texi gcc-4.9.1/gcc/doc/invoke.texi
+--- gcc-4.9.1.orig/gcc/doc/invoke.texi 2014-05-28 13:37:50.000000000 +0200
++++ gcc-4.9.1/gcc/doc/invoke.texi 2014-08-05 15:54:02.000000000 +0200
+@@ -243,7 +243,7 @@
+ -Wconversion -Wcoverage-mismatch -Wdate-time -Wdelete-incomplete -Wno-cpp @gol
+ -Wno-deprecated -Wno-deprecated-declarations -Wdisabled-optimization @gol
+ -Wno-div-by-zero -Wdouble-promotion -Wempty-body -Wenum-compare @gol
+--Wno-endif-labels -Werror -Werror=* @gol
++-Wno-endif-labels -Werror -Werror=* -Werror-maybe-reset @gol
+ -Wfatal-errors -Wfloat-equal -Wformat -Wformat=2 @gol
+ -Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol
+ -Wformat-security -Wformat-y2k @gol
+@@ -5041,6 +5041,22 @@
+ @option{-Wall} and by @option{-Wpedantic}, which can be disabled with
+ @option{-Wno-pointer-sign}.
+
++ at item -Werror-maybe-reset
++ at opindex Werror-maybe-reset
++Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
++variable is set to anything other than 0 or empty.
++
++ at item -fhonour-copts
++ at opindex fhonour-copts
++If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
++given at least once, and warn if it is given more than once.
++If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
++given exactly once.
++If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option
++is not given exactly once.
++The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}.
++This flag and environment variable only affect the C language.
++
+ @item -Wstack-protector
+ @opindex Wstack-protector
+ @opindex Wno-stack-protector
+@@ -7188,7 +7204,7 @@
+ second branch or a point immediately following it, depending on whether
+ the condition is known to be true or false.
+
+-Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.
++Enabled at levels @option{-O3}.
+
+ @item -fsplit-wide-types
+ @opindex fsplit-wide-types
+diff -Nur gcc-4.9.1.orig/gcc/java/jvspec.c gcc-4.9.1/gcc/java/jvspec.c
+--- gcc-4.9.1.orig/gcc/java/jvspec.c 2014-01-02 23:23:26.000000000 +0100
++++ gcc-4.9.1/gcc/java/jvspec.c 2014-08-05 15:54:02.000000000 +0200
+@@ -626,6 +626,7 @@
+ class name. Append dummy `.c' that can be stripped by set_input so %b
+ is correct. */
+ set_input (concat (main_class_name, "main.c", NULL));
++ putenv ("GCC_HONOUR_COPTS=s"); /* XXX hack! */
+ err = do_spec (jvgenmain_spec);
+ if (err == 0)
+ {
+diff -Nur gcc-4.9.1.orig/gcc/opts.c gcc-4.9.1/gcc/opts.c
+--- gcc-4.9.1.orig/gcc/opts.c 2014-05-18 00:20:43.000000000 +0200
++++ gcc-4.9.1/gcc/opts.c 2014-08-05 15:54:02.000000000 +0200
+@@ -499,6 +499,8 @@
+ { OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 },
+
+ /* -O3 optimizations. */
++ { OPT_LEVELS_3_PLUS, OPT_fstrict_aliasing, NULL, 1 },
++ { OPT_LEVELS_3_PLUS, OPT_fstrict_overflow, NULL, 1 },
+ { OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
+ { OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 },
+ /* Inlining of functions reducing size is a good idea with -Os
+@@ -1536,6 +1538,17 @@
+ opts, opts_set, loc, dc);
+ break;
+
++ case OPT_Werror_maybe_reset:
++ {
++ char *ev = getenv ("GCC_NO_WERROR");
++ if ((ev != NULL) && (*ev != '0'))
++ warnings_are_errors = 0;
++ }
++ break;
++
++ case OPT_fhonour_copts:
++ break;
++
+ case OPT_Wlarger_than_:
+ opts->x_larger_than_size = value;
+ opts->x_warn_larger_than = value != -1;
diff --git a/toolchain/gcc/patches/4.9.2-or1k/gcc.musl b/toolchain/gcc/patches/4.9.2-or1k/gcc.musl
new file mode 100644
index 000000000..b8f394eb5
--- /dev/null
+++ b/toolchain/gcc/patches/4.9.2-or1k/gcc.musl
@@ -0,0 +1,40143 @@
+diff -Nur gcc-4.9.2-or1k.orig/fixincludes/mkfixinc.sh gcc-4.9.2-or1k/fixincludes/mkfixinc.sh
+--- gcc-4.9.2-or1k.orig/fixincludes/mkfixinc.sh 2015-07-13 13:42:13.000000000 -0500
++++ gcc-4.9.2-or1k/fixincludes/mkfixinc.sh 2015-07-13 14:13:48.314287003 -0500
+@@ -19,7 +19,8 @@
+ powerpc-*-eabi* | \
+ powerpc-*-rtems* | \
+ powerpcle-*-eabisim* | \
+- powerpcle-*-eabi* )
++ powerpcle-*-eabi* | \
++ *-musl* )
+ # IF there is no include fixing,
+ # THEN create a no-op fixer and exit
+ (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/aarch64/aarch64-linux.h gcc-4.9.2-or1k/gcc/config/aarch64/aarch64-linux.h
+--- gcc-4.9.2-or1k.orig/gcc/config/aarch64/aarch64-linux.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/aarch64/aarch64-linux.h 2015-07-13 14:13:48.314287003 -0500
+@@ -23,6 +23,8 @@
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}.so.1"
+
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
++
+ #define CPP_SPEC "%{pthread:-D_REENTRANT}"
+
+ #define LINUX_TARGET_LINK_SPEC "%{h*} \
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/arm/linux-eabi.h gcc-4.9.2-or1k/gcc/config/arm/linux-eabi.h
+--- gcc-4.9.2-or1k.orig/gcc/config/arm/linux-eabi.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/arm/linux-eabi.h 2015-07-13 14:13:48.314287003 -0500
+@@ -77,6 +77,23 @@
+ %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+ %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
+
++/* For ARM musl currently supports four dynamic linkers:
++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++ musl does not support the legacy OABI mode.
++ All the dynamic linkers live in /lib.
++ We default to soft-float, EL. */
++#undef MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
+ use the GNU/Linux version, not the generic BPABI version. */
+ #undef LINK_SPEC
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/i386/linux64.h gcc-4.9.2-or1k/gcc/config/i386/linux64.h
+--- gcc-4.9.2-or1k.orig/gcc/config/i386/linux64.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/i386/linux64.h 2015-07-13 14:13:48.314287003 -0500
+@@ -30,3 +30,7 @@
+ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/i386/linux.h gcc-4.9.2-or1k/gcc/config/i386/linux.h
+--- gcc-4.9.2-or1k.orig/gcc/config/i386/linux.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/i386/linux.h 2015-07-13 14:13:48.318287001 -0500
+@@ -21,3 +21,4 @@
+
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/linux.h gcc-4.9.2-or1k/gcc/config/linux.h
+--- gcc-4.9.2-or1k.orig/gcc/config/linux.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/linux.h 2015-07-13 14:13:48.318287001 -0500
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
+ #endif
+
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
+@@ -53,18 +55,21 @@
+ 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 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,21 +89,92 @@
+
+ #define GNU_USER_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+- BIONIC_DYNAMIC_LINKER)
++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+- BIONIC_DYNAMIC_LINKER32)
++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+- BIONIC_DYNAMIC_LINKER64)
++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+- BIONIC_DYNAMIC_LINKERX32)
++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+ #define TARGET_HAS_BIONIC (OPTION_BIONIC)
+
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP \
++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS \
++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL \
++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS \
++ { \
++ INCLUDE_DEFAULTS_MUSL_GPP \
++ INCLUDE_DEFAULTS_MUSL_PREFIX \
++ INCLUDE_DEFAULTS_MUSL_CROSS \
++ INCLUDE_DEFAULTS_MUSL_TOOL \
++ INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
++ { 0, 0, 0, 0, 0, 0 } \
++ }
++#endif
++
+ #if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
+ /* This is a *uclinux* target. We don't define below macros to normal linux
+ versions, because doing so would require *uclinux* targets to include
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/linux.opt gcc-4.9.2-or1k/gcc/config/linux.opt
+--- gcc-4.9.2-or1k.orig/gcc/config/linux.opt 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/linux.opt 2015-07-13 14:13:48.318287001 -0500
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/microblaze/linux.h gcc-4.9.2-or1k/gcc/config/microblaze/linux.h
+--- gcc-4.9.2-or1k.orig/gcc/config/microblaze/linux.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/microblaze/linux.h 2015-07-13 14:13:48.318287001 -0500
+@@ -25,7 +25,22 @@
+ #undef TLS_NEEDS_GOT
+ #define TLS_NEEDS_GOT 1
+
+-#define DYNAMIC_LINKER "/lib/ld.so.1"
++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
++#endif
++
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
++#if DEFAULT_LIBC == LIBC_MUSL
++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
++#else
++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
++#endif
++
++
+ #undef SUBTARGET_EXTRA_SPECS
+ #define SUBTARGET_EXTRA_SPECS \
+ { "dynamic_linker", DYNAMIC_LINKER }
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/microblaze/microblaze.h gcc-4.9.2-or1k/gcc/config/microblaze/microblaze.h
+--- gcc-4.9.2-or1k.orig/gcc/config/microblaze/microblaze.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/microblaze/microblaze.h 2015-07-13 14:13:48.318287001 -0500
+@@ -218,6 +218,12 @@
+ #undef PTRDIFF_TYPE
+ #define PTRDIFF_TYPE "int"
+
++#undef SIZE_TYPE
++#define SIZE_TYPE "unsigned int"
++
++#undef PTRDIFF_TYPE
++#define PTRDIFF_TYPE "int"
++
+ #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
+ ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
+ && (ALIGN) < BITS_PER_WORD \
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/mips/linux.h gcc-4.9.2-or1k/gcc/config/mips/linux.h
+--- gcc-4.9.2-or1k.orig/gcc/config/mips/linux.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/mips/linux.h 2015-07-13 14:13:48.318287001 -0500
+@@ -23,3 +23,10 @@
+ #undef UCLIBC_DYNAMIC_LINKER
+ #define UCLIBC_DYNAMIC_LINKER \
+ "%{mnan=2008:/lib/ld-uClibc-mipsn8.so.0;:/lib/ld-uClibc.so.0}"
++
++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
++#endif
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/or1k/linux-elf.h gcc-4.9.2-or1k/gcc/config/or1k/linux-elf.h
+--- gcc-4.9.2-or1k.orig/gcc/config/or1k/linux-elf.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/or1k/linux-elf.h 2015-07-13 14:19:46.226287005 -0500
+@@ -65,6 +65,7 @@
+ #define DRIVER_SELF_SPECS ""
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-or1k.so.1"
+
+ /* Define a set of Linux builtins. This is copied from linux.h. We can't
+ include the whole file for now, because that causes configure to require ld
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/rs6000/linux64.h gcc-4.9.2-or1k/gcc/config/rs6000/linux64.h
+--- gcc-4.9.2-or1k.orig/gcc/config/rs6000/linux64.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/rs6000/linux64.h 2015-07-13 14:13:48.318287001 -0500
+@@ -375,17 +375,21 @@
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+
+ #undef DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/rs6000/secureplt.h gcc-4.9.2-or1k/gcc/config/rs6000/secureplt.h
+--- gcc-4.9.2-or1k.orig/gcc/config/rs6000/secureplt.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/rs6000/secureplt.h 2015-07-13 14:13:48.318287001 -0500
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/rs6000/sysv4.h gcc-4.9.2-or1k/gcc/config/rs6000/sysv4.h
+--- gcc-4.9.2-or1k.orig/gcc/config/rs6000/sysv4.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/rs6000/sysv4.h 2015-07-13 14:13:48.318287001 -0500
+@@ -537,6 +537,9 @@
+ #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
+
+ /* Pass -G xxx to the compiler. */
+ #define CC1_SPEC "%{G*} %(cc1_cpu)" \
+@@ -585,7 +588,8 @@
+
+ /* Override the default target of the linker. */
+ #define LINK_TARGET_SPEC \
+- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+
+ /* Any specific OS flags. */
+ #define LINK_OS_SPEC "\
+@@ -763,15 +767,18 @@
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+@@ -894,6 +901,7 @@
+ { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
+ { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
+ { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
+ { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
+ { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
+ { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config/sh/linux.h gcc-4.9.2-or1k/gcc/config/sh/linux.h
+--- gcc-4.9.2-or1k.orig/gcc/config/sh/linux.h 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config/sh/linux.h 2015-07-13 14:13:48.318287001 -0500
+@@ -43,7 +43,14 @@
+
+ #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
++#define MUSL_DYNAMIC_LINKER_E "eb"
++#else
++#define MUSL_DYNAMIC_LINKER_E
++#endif
++
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
+
+ #undef SUBTARGET_LINK_EMUL_SUFFIX
+ #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config.gcc gcc-4.9.2-or1k/gcc/config.gcc
+--- gcc-4.9.2-or1k.orig/gcc/config.gcc 2015-07-13 13:42:14.000000000 -0500
++++ gcc-4.9.2-or1k/gcc/config.gcc 2015-07-13 14:13:48.318287001 -0500
+@@ -600,7 +600,7 @@
+ esac
+
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+
+ # 32-bit x86 processors supported by --with-arch=. Each processor
+ # MUST be separated by exactly one space.
+@@ -725,6 +725,9 @@
+ *-*-*uclibc*)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+ ;;
++ *-*-*musl*)
++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++ ;;
+ *)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+ ;;
+@@ -2363,6 +2366,10 @@
+ powerpc*-*-linux*paired*)
+ tm_file="${tm_file} rs6000/750cl.h" ;;
+ esac
++ case ${target} in
++ *-linux*-musl*)
++ enable_secureplt=yes ;;
++ esac
+ if test x${enable_secureplt} = xyes; then
+ tm_file="rs6000/secureplt.h ${tm_file}"
+ fi
+diff -Nur gcc-4.9.2-or1k.orig/gcc/config.gcc.orig gcc-4.9.2-or1k/gcc/config.gcc.orig
+--- gcc-4.9.2-or1k.orig/gcc/config.gcc.orig 1969-12-31 18:00:00.000000000 -0600
++++ gcc-4.9.2-or1k/gcc/config.gcc.orig 2015-07-13 13:42:14.000000000 -0500
+@@ -0,0 +1,4265 @@
++# GCC target-specific configuration file.
++# Copyright (C) 1997-2014 Free Software Foundation, Inc.
++
++#This file is part of GCC.
++
++#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 3, or (at your option) any later
++#version.
++
++#GCC is distributed in the hope that it will be useful, but WITHOUT
++#ANY WARRANTY; without even the implied warranty of 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 COPYING3. If not see
++#<http://www.gnu.org/licenses/>.
++
++# This is the GCC target-specific configuration file
++# where a configuration type is mapped to different system-specific
++# definitions and files. This is invoked by the autoconf-generated
++# configure script. Putting it in a separate shell file lets us skip
++# running autoconf when modifying target-specific information.
++
++# When you change the cases in the OS or target switches, consider
++# updating ../libgcc/config.host also.
++
++# This file switches on the shell variable ${target}, and also uses the
++# following shell variables:
++#
++# with_* Various variables as set by configure.
++#
++# enable_threads Either the name, yes or no depending on whether
++# threads support was requested.
++#
++# default_use_cxa_atexit
++# The default value for the $enable___cxa_atexit
++# variable. enable___cxa_atexit needs to be set to
++# "yes" for the correct operation of C++ destructors
++# but it relies upon the presence of a non-standard C
++# library function called __cxa_atexit.
++# Since not all C libraries provide __cxa_atexit the
++# default value of $default_use_cxa_atexit is set to
++# "no" except for targets which are known to be OK.
++#
++# default_gnu_indirect_function
++# The default value for the $enable_gnu_indirect_function
++# variable. enable_gnu_indirect_function relies
++# upon the presence of a non-standard gnu ifunc support
++# in the assembler, linker and dynamic linker.
++# Since not all libraries provide the dynamic linking
++# support, the default value of
++# $default_gnu_indirect_function is set to
++# "no" except for targets which are known to be OK.
++#
++# gas_flag Either yes or no depending on whether GNU as was
++# requested.
++#
++# gnu_ld_flag Either yes or no depending on whether GNU ld was
++# requested.
++
++# This file sets the following shell variables for use by the
++# autoconf-generated configure script:
++#
++# cpu_type The name of the cpu, if different from the first
++# chunk of the canonical target name.
++#
++# tm_defines List of target macros to define for all compilations.
++#
++# tm_file A list of target macro files, if different from
++# "$cpu_type/$cpu_type.h". Usually it's constructed
++# per target in a way like this:
++# tm_file="${tm_file} dbxelf.h elfos.h ${cpu_type.h}/elf.h"
++# Note that the preferred order is:
++# - specific target header "${cpu_type}/${cpu_type.h}"
++# - generic headers like dbxelf.h elfos.h, etc.
++# - specializing target headers like ${cpu_type.h}/elf.h
++# This helps to keep OS specific stuff out of the CPU
++# defining header ${cpu_type}/${cpu_type.h}.
++#
++# It is possible to include automatically-generated
++# build-directory files by prefixing them with "./".
++# All other files should relative to $srcdir/config.
++#
++# tm_p_file Location of file with declarations for functions
++# in $out_file.
++#
++# out_file The name of the machine description C support
++# file, if different from "$cpu_type/$cpu_type.c".
++#
++# common_out_file The name of the source file for code shared between
++# the compiler proper and the driver.
++#
++# md_file The name of the machine-description file, if
++# different from "$cpu_type/$cpu_type.md".
++#
++# tmake_file A list of machine-description-specific
++# makefile-fragments, if different from
++# "$cpu_type/t-$cpu_type".
++#
++# extra_modes The name of the file containing a list of extra
++# machine modes, if necessary and different from
++# "$cpu_type/$cpu_type-modes.def".
++#
++# extra_objs List of extra objects that should be linked into
++# the compiler proper (cc1, cc1obj, cc1plus)
++# depending on target.
++#
++# extra_gcc_objs List of extra objects that should be linked into
++# the compiler driver (gcc) depending on target.
++#
++# extra_headers List of used header files from the directory
++# config/${cpu_type}.
++#
++# user_headers_inc_next_pre
++# List of header file names of internal gcc header
++# files, which should be prefixed by an include_next.
++# user_headers_inc_next_post
++# List of header file names of internal gcc header
++# files, which should be postfixed by an include_next.
++# use_gcc_tgmath If set, add tgmath.h to the list of used header
++# files.
++#
++# use_gcc_stdint If "wrap", install a version of stdint.h that
++# wraps the system's copy for hosted compilations;
++# if "provide", provide a version of systems without
++# such a system header; otherwise "none", do not
++# provide such a header at all.
++#
++# extra_programs List of extra executables compiled for this target
++# machine, used when linking.
++#
++# extra_options List of target-dependent .opt files.
++#
++# c_target_objs List of extra target-dependent objects that be
++# linked into the C compiler only.
++#
++# cxx_target_objs List of extra target-dependent objects that be
++# linked into the C++ compiler only.
++#
++# fortran_target_objs List of extra target-dependent objects that be
++# linked into the fortran compiler only.
++#
++# target_gtfiles List of extra source files with type information.
++#
++# xm_defines List of macros to define when compiling for the
++# target machine.
++#
++# xm_file List of files to include when compiling for the
++# target machine.
++#
++# use_collect2 Set to yes or no, depending on whether collect2
++# will be used.
++#
++# target_cpu_default Set to override the default target model.
++#
++# gdb_needs_out_file_path
++# Set to yes if gdb needs a dir command with
++# `dirname $out_file`.
++#
++# thread_file Set to control which thread package to use.
++#
++# gas Set to yes or no depending on whether the target
++# system normally uses GNU as.
++#
++# need_64bit_hwint Set to yes if HOST_WIDE_INT must be 64 bits wide
++# for this target. This is true if this target
++# supports "long" or "wchar_t" wider than 32 bits,
++# or BITS_PER_WORD is wider than 32 bits.
++# The setting made here must match the one made in
++# other locations such as libcpp/configure.ac
++#
++# configure_default_options
++# Set to an initializer for configure_default_options
++# in configargs.h, based on --with-cpu et cetera.
++#
++# native_system_header_dir
++# Where system header files are found for this
++# target. This defaults to /usr/include. If
++# the --with-sysroot configure option or the
++# --sysroot command line option is used this
++# will be relative to the sysroot.
++# target_type_format_char
++# The default character to be used for formatting
++# the attribute in a
++# .type symbol_name, ${t_t_f_c}<property>
++# directive.
++
++# The following variables are used in each case-construct to build up the
++# outgoing variables:
++#
++# gnu_ld Set to yes or no depending on whether the target
++# system normally uses GNU ld.
++#
++# target_has_targetcm Set to yes or no depending on whether the target
++# has its own definition of targetcm.
++#
++# target_has_targetm_common Set to yes or no depending on whether the
++# target has its own definition of targetm_common.
++
++out_file=
++common_out_file=
++tmake_file=
++extra_headers=
++user_headers_inc_next_pre=
++user_headers_inc_next_post=
++use_gcc_tgmath=yes
++use_gcc_stdint=none
++extra_programs=
++extra_objs=
++extra_gcc_objs=
++extra_options=
++c_target_objs=
++cxx_target_objs=
++fortran_target_objs=
++target_has_targetcm=no
++target_has_targetm_common=yes
++tm_defines=
++xm_defines=
++# Set this to force installation and use of collect2.
++use_collect2=
++# Set this to override the default target model.
++target_cpu_default=
++# Set this if gdb needs a dir command with `dirname $out_file`
++gdb_needs_out_file_path=
++# Set this to control which thread package will be used.
++thread_file=
++# Reinitialize these from the flag values every loop pass, since some
++# configure entries modify them.
++gas="$gas_flag"
++gnu_ld="$gnu_ld_flag"
++default_use_cxa_atexit=no
++default_gnu_indirect_function=no
++target_gtfiles=
++need_64bit_hwint=
++need_64bit_isa=
++native_system_header_dir=/usr/include
++target_type_format_char='@'
++
++# Don't carry these over build->host->target. Please.
++xm_file=
++md_file=
++
++# Obsolete configurations.
++case ${target} in
++ picochip-* \
++ | score-* \
++ | *-*-solaris2.9* \
++ )
++ if test "x$enable_obsolete" != xyes; then
++ echo "*** Configuration ${target} is obsolete." >&2
++ echo "*** Specify --enable-obsolete to build it anyway." >&2
++ echo "*** Support will be REMOVED in the next major release of GCC," >&2
++ echo "*** unless a maintainer comes forward." >&2
++ exit 1
++ fi;;
++esac
++
++# Unsupported targets list. Do not put an entry in this list unless
++# it would otherwise be caught by a more permissive pattern. The list
++# should be in alphabetical order.
++case ${target} in
++ # Avoid special cases that are not obsolete
++ arm*-*-*eabi* \
++ )
++ ;;
++ arm*-wince-pe* \
++ | arm*-*-ecos-elf \
++ | arm*-*-elf \
++ | arm*-*-freebsd* \
++ | arm*