initial check-in

2015-08-25 19:32:46 +00:00 · 2015-08-25 19:32:46 +00:00 · 596e008012
commit 596e008012
11 changed files with 1430 additions and 0 deletions
--- a/121
+++ b/121
@ -0,0 +1,121 @@
+
+OUTPUT = $(PWD)/output
+TARGET = sh2eb-linux-musl
+
+BINUTILS_VER = 2.25.1
+GCC_VER = 5.2.0
+
+COMMON_CONFIG = --disable-werror \
+	--target=$(TARGET) --prefix=$(OUTPUT) \
+	--with-sysroot=$(OUTPUT)/$(TARGET)
+
+BINUTILS_CONFIG = $(COMMON_CONFIG)
+GCC_CONFIG = $(COMMON_CONFIG) \
+	--disable-libmudflap --disable-libsanitizer \
+	--disable-libquadmath --disable-decimal-float
+
+GCC0_CONFIG = $(GCC_CONFIG) \
+	--without-headers --disable-libssp --disable-threads \
+	--disable-shared --disable-libgomp --disable-libatomic \
+	--disable-libquadmath --disable-decimal-float --disable-nls \
+	--enable-languages=c \
+	CFLAGS="-O0 -g0" CXXFLAGS="-O0 -g0"
+
+MUSL_CONFIG = CC=$(OUTPUT)/bin/$(TARGET)-gcc --prefix=/usr
+
+-include config.mak
+
+
+all: steps/install_binutils steps/install_musl steps/install_gcc
+
+
+steps/configure_gcc0: steps/install_binutils
+steps/configure_gcc: steps/install_musl
+
+
+sources/config.sub:
+	wget -O $@ 'http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD'
+
+sources/binutils-%:
+	wget -c -O $@.part http://ftp.gnu.org/pub/gnu/binutils/$(notdir $@)
+	mv $@.part $@
+
+sources/gcc-%:
+	wget -c -O $@.part http://ftp.gnu.org/pub/gnu/gcc/$(basename $(basename $(notdir $@)))/$(notdir $@)
+	mv $@.part $@
+
+
+
+steps/extract_binutils: sources/binutils-$(BINUTILS_VER).tar.bz2 sources/config.sub
+	tar jxvf $<
+	cat patches/binutils-$(BINUTILS_VER)/* | ( cd binutils-$(BINUTILS_VER) && patch -p1 )
+	cp sources/config.sub binutils-$(BINUTILS_VER)
+	touch $@
+
+steps/configure_binutils: steps/extract_binutils
+	test -e binutils-$(BINUTILS_VER)/config.status || ( cd binutils-$(BINUTILS_VER) && ./configure $(BINUTILS_CONFIG) )
+	touch $@
+
+steps/build_binutils: steps/configure_binutils
+	cd binutils-$(BINUTILS_VER) && $(MAKE)
+	touch $@
+
+steps/install_binutils: steps/build_binutils
+	cd binutils-$(BINUTILS_VER) && $(MAKE) install
+	touch $@
+
+
+
+
+steps/extract_gcc: sources/gcc-$(GCC_VER).tar.bz2 sources/config.sub
+	tar jxvf $<
+	cat patches/gcc-$(GCC_VER)/* | ( cd gcc-$(GCC_VER) && patch -p1 )
+	cp sources/config.sub gcc-$(GCC_VER)
+	touch $@
+
+steps/configure_gcc0: steps/extract_gcc
+	mkdir -p gcc-$(GCC_VER)/build0
+	test -e gcc-$(GCC_VER)/build0/config.status || ( cd gcc-$(GCC_VER)/build0 && ../configure $(GCC0_CONFIG) )
+	touch $@
+
+steps/build_gcc0: steps/configure_gcc0
+	cd gcc-$(GCC_VER)/build0 && $(MAKE)
+	touch $@
+
+steps/install_gcc0: steps/build_gcc0
+	cd gcc-$(GCC_VER)/build0 && $(MAKE) install
+	touch $@
+
+steps/configure_gcc: steps/extract_gcc
+	mkdir -p gcc-$(GCC_VER)/build
+	test -e gcc-$(GCC_VER)/build/config.status || ( cd gcc-$(GCC_VER)/build && ../configure $(GCC_CONFIG) )
+	touch $@
+
+steps/build_gcc: steps/configure_gcc
+	cd gcc-$(GCC_VER)/build && $(MAKE)
+	touch $@
+
+steps/install_gcc: steps/build_gcc
+	cd gcc-$(GCC_VER)/build && $(MAKE) install
+	touch $@
+
+
+
+
+
+steps/clone_musl:
+	test -d musl || git clone git://git.musl-libc.org/musl musl
+	touch $@
+
+steps/configure_musl: steps/clone_musl steps/install_gcc0
+	cd musl && ./configure $(MUSL_CONFIG)
+	cat patches/musl-complex-hack >> musl/config.mak
+	touch $@
+
+steps/build_musl: steps/configure_musl
+	cd musl && $(MAKE)
+	touch $@
+
+steps/install_musl: steps/build_musl
+	cd musl && $(MAKE) install DESTDIR=$(OUTPUT)/$(TARGET)
+	touch $@
--- a/config.mak.dist
+++ b/config.mak.dist
@ -0,0 +1,10 @@
+OUTPUT = $(PWD)/output
+TARGET = sh2eb-linux-musl
+
+BINUTILS_VER = 2.25.1
+GCC_VER = 5.2.0
+
+# COMMON_CONFIG += --disable-nls
+# GCC_CONFIG += --enable-languages=c,c++,lto
+# GCC_CONFIG += --disable-multilib
+# GCC_CONFIG += --with-cpu=mj2
--- a/patches/binutils-2.25.1/0001-staticpie.diff
+++ b/patches/binutils-2.25.1/0001-staticpie.diff
@ -0,0 +1,78 @@
+--- binutils-2.25.1.orig/bfd/elf32-sh.c
+++ binutils-2.25.1/bfd/elf32-sh.c
+@@ -3344,7 +3344,7 @@
+   if (htab->root.dynamic_sections_created)
+     {
+       /* Set the contents of the .interp section to the interpreter.  */
+-      if (info->executable)
+      if (info->executable && !info->nointerp)
+ 	{
+ 	  s = bfd_get_linker_section (dynobj, ".interp");
+ 	  BFD_ASSERT (s != NULL);
+--- binutils-2.25.1.orig/bfd/elflink.c
+++ binutils-2.25.1/bfd/elflink.c
+@@ -206,7 +206,7 @@
+ 
+   /* A dynamically linked executable has a .interp section, but a
+      shared library does not.  */
+-  if (info->executable)
+  if (info->executable && !info->nointerp)
+     {
+       s = bfd_make_section_anyway_with_flags (abfd, ".interp",
+ 					      flags | SEC_READONLY);
+@@ -5620,7 +5620,7 @@
+       bfd_boolean all_defined;
+ 
+       *sinterpptr = bfd_get_linker_section (dynobj, ".interp");
+-      BFD_ASSERT (*sinterpptr != NULL || !info->executable);
+      BFD_ASSERT (*sinterpptr != NULL || !info->executable || info->nointerp);
+ 
+       if (soname != NULL)
+ 	{
+--- binutils-2.25.1.orig/include/bfdlink.h
+++ binutils-2.25.1/include/bfdlink.h
+@@ -426,6 +426,9 @@
+   /* TRUE if BND prefix in PLT entries is always generated.  */
+   unsigned int bndplt: 1;
+ 
+  /* TRUE if generation of .interp/PT_INTERP should be suppressed.  */
+  unsigned int nointerp: 1;
+
+   /* Char that may appear as the first char of a symbol, but should be
+      skipped (like symbol_leading_char) when looking up symbols in
+      wrap_hash.  Used by PowerPC Linux for 'dot' symbols.  */
+--- binutils-2.25.1.orig/ld/ldlex.h
+++ binutils-2.25.1/ld/ldlex.h
+@@ -33,6 +33,7 @@
+   OPTION_DEFSYM,
+   OPTION_DEMANGLE,
+   OPTION_DYNAMIC_LINKER,
+  OPTION_NO_DYNAMIC_LINKER,
+   OPTION_SYSROOT,
+   OPTION_EB,
+   OPTION_EL,
+--- binutils-2.25.1.orig/ld/lexsup.c
+++ binutils-2.25.1/ld/lexsup.c
+@@ -138,6 +138,9 @@
+   { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
+     'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
+     TWO_DASHES },
+  { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER},
+    '\0', NULL, N_("Produce an executable with no program interpreter header"),
+    TWO_DASHES },
+   { {"library", required_argument, NULL, 'l'},
+     'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
+   { {"library-path", required_argument, NULL, 'L'},
+@@ -747,6 +750,11 @@
+ 	case 'I':		/* Used on Solaris.  */
+ 	case OPTION_DYNAMIC_LINKER:
+ 	  command_line.interpreter = optarg;
+	  link_info.nointerp = 0;
+	  break;
+	case OPTION_NO_DYNAMIC_LINKER:
+	  command_line.interpreter = NULL;
+	  link_info.nointerp = 1;
+ 	  break;
+ 	case OPTION_SYSROOT:
+ 	  /* Already handled in ldmain.c.  */
+
--- a/patches/binutils-2.25.1/0002-cas.diff
+++ b/patches/binutils-2.25.1/0002-cas.diff
@ -0,0 +1,45 @@
+--- binutils-2.25.1.orig/gas/config/tc-sh.c
+++ binutils-2.25.1/gas/config/tc-sh.c
+@@ -1730,6 +1730,11 @@
+ 		goto fail;
+ 	      break;
+ 
+	    case A_IND_0:
+	      if (user->type != A_IND_N || user->reg != 0)
+		goto fail;
+	      break;
+
+ 	    case A_REG_N:
+ 	    case A_INC_N:
+ 	    case A_DEC_N:
+--- binutils-2.25.1.orig/opcodes/sh-dis.c
+++ binutils-2.25.1/opcodes/sh-dis.c
+@@ -703,6 +703,9 @@
+ 	    case AS_DEC_N:
+ 	      fprintf_fn (stream, "@-r%d", rn);
+ 	      break;
+	    case A_IND_0:
+	      fprintf_fn (stream, "@r0");
+	      break;
+ 	    case A_IND_N:
+ 	    case AS_IND_N:
+ 	      fprintf_fn (stream, "@r%d", rn);
+--- binutils-2.25.1.orig/opcodes/sh-opc.h
+++ binutils-2.25.1/opcodes/sh-opc.h
+@@ -112,6 +112,7 @@
+     A_IMM,
+     A_INC_M,
+     A_INC_N,
+    A_IND_0,
+     A_IND_M,
+     A_IND_N,
+     A_IND_R0_REG_M,
+@@ -410,6 +411,8 @@
+ /* 10001111i8p1.... bf.s <bdisp8>       */{"bf.s",{A_BDISP8},{HEX_8,HEX_F,BRANCH_8}, arch_sh2_up},
+ 
+ /* 10001111i8p1.... bf/s <bdisp8>       */{"bf/s",{A_BDISP8},{HEX_8,HEX_F,BRANCH_8}, arch_sh2_up},
+
+/* 0011nnnnmmmm0001 cas.l <REG_M>,<REG_N>,@R0*/{"cas.l",{A_REG_M,A_REG_N,A_IND_0},{HEX_3,REG_N,REG_M,HEX_1}, arch_sh2_up},
+ 
+ /* 0000000010001000 clrdmxy             */{"clrdmxy",{0},{HEX_0,HEX_0,HEX_8,HEX_8}, arch_sh4al_dsp_up},
+ 
--- a/patches/gcc-5.2.0/0001-musl.diff
+++ b/patches/gcc-5.2.0/0001-musl.diff
@ -0,0 +1,891 @@
+diff --git a/fixincludes/mkfixinc.sh b/fixincludes/mkfixinc.sh
+index 6653fed..0d96c8c 100755
+--- a/fixincludes/mkfixinc.sh
+++ b/fixincludes/mkfixinc.sh
+@@ -19,7 +19,8 @@ case $machine in
+     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 --git a/gcc/config.gcc b/gcc/config.gcc
+index 3ede69b..d9eb8cf 100644
+--- a/gcc/config.gcc
+++ b/gcc/config.gcc
+@@ -575,7 +575,7 @@ case ${target} in
+ esac
+ 
+ # Common C libraries.
+-tm_defines="$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.
+@@ -720,6 +720,9 @@ case ${target} in
+     *-*-*uclibc*)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+       ;;
+    *-*-*musl*)
+      tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
+      ;;
+     *)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+       ;;
+diff --git a/gcc/config/aarch64/aarch64-linux.h b/gcc/config/aarch64/aarch64-linux.h
+index ba7fc3b..1600a32 100644
+--- a/gcc/config/aarch64/aarch64-linux.h
+++ b/gcc/config/aarch64/aarch64-linux.h
+@@ -23,6 +23,9 @@
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
+ 
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
+
+ #undef  ASAN_CC1_SPEC
+ #define ASAN_CC1_SPEC "%{%:sanitize(address):-funwind-tables}"
+ 
+diff --git a/gcc/config/alpha/linux.h b/gcc/config/alpha/linux.h
+index c567f43..475ea06 100644
+--- a/gcc/config/alpha/linux.h
+++ b/gcc/config/alpha/linux.h
+@@ -61,10 +61,14 @@ along with GCC; see the file COPYING3.  If not see
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+#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)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ /* Determine what functions are present at the runtime;
+diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
+index e9d65dc..f12e6bd 100644
+--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
+@@ -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 --git a/gcc/config/glibc-stdint.h b/gcc/config/glibc-stdint.h
+index 3fc67dc..98f4f04 100644
+--- a/gcc/config/glibc-stdint.h
+++ b/gcc/config/glibc-stdint.h
+@@ -22,6 +22,12 @@ 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/>.  */
+ 
+/* Systems using musl libc should use this header and make sure
+   OPTION_MUSL is defined correctly before using the TYPE macros. */
+#ifndef OPTION_MUSL
+#define OPTION_MUSL 0
+#endif
+
+ #define SIG_ATOMIC_TYPE "int"
+ 
+ #define INT8_TYPE "signed char"
+@@ -43,12 +49,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ #define UINT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
+ 
+ #define INT_FAST8_TYPE "signed char"
+-#define INT_FAST16_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
+-#define INT_FAST32_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
+#define INT_FAST16_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long int" : "int")
+#define INT_FAST32_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long int" : "int")
+ #define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
+ #define UINT_FAST8_TYPE "unsigned char"
+-#define UINT_FAST16_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
+-#define UINT_FAST32_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
+#define UINT_FAST16_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long unsigned int" : "unsigned int")
+#define UINT_FAST32_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long unsigned int" : "unsigned int")
+ #define UINT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
+ 
+ #define INTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
+diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h
+index a100963..385aefd 100644
+--- a/gcc/config/i386/linux.h
+++ b/gcc/config/i386/linux.h
+@@ -21,3 +21,6 @@ along with GCC; see the file COPYING3.  If not see
+ 
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
+index a27d3be..e300480 100644
+--- a/gcc/config/i386/linux64.h
+++ b/gcc/config/i386/linux64.h
+@@ -30,3 +30,10 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ #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"
+
+#undef MUSL_DYNAMIC_LINKER32
+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
+#undef MUSL_DYNAMIC_LINKER64
+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
+#undef MUSL_DYNAMIC_LINKERX32
+#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
+diff --git a/gcc/config/linux.h b/gcc/config/linux.h
+index 857389a..7bc87ab 100644
+--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
+@@ -32,10 +32,14 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+#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)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS()			\
+@@ -50,21 +54,25 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+     } while (0)
+ 
+ /* 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.  */
+   uClibc or Bionic or musl is the default C library and whether
+   -muclibc or -mglibc or -mbionic or -mmusl 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 */
+@@ -81,24 +89,100 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ #define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker"
+ #define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64"
+ #define BIONIC_DYNAMIC_LINKERX32 "/system/bin/linkerx32"
+/* Should be redefined for each target that supports musl.  */
+#define MUSL_DYNAMIC_LINKER "/dev/null"
+#define MUSL_DYNAMIC_LINKER32 "/dev/null"
+#define MUSL_DYNAMIC_LINKER64 "/dev/null"
+#define MUSL_DYNAMIC_LINKERX32 "/dev/null"
+ 
+ #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 --git a/gcc/config/linux.opt b/gcc/config/linux.opt
+index c054338..ef055a7 100644
+--- a/gcc/config/linux.opt
+++ b/gcc/config/linux.opt
+@@ -28,5 +28,9 @@ Target Report RejectNegative Var(linux_libc,LIBC_GLIBC) Negative(muclibc)
+ Use GNU C library
+ 
+ muclibc
+-Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mmusl)
+ Use uClibc C library
+
+mmusl
+Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mbionic)
+Use musl C library
+diff --git a/gcc/config/microblaze/linux.h b/gcc/config/microblaze/linux.h
+index 655a70f..a8a3f3e 100644
+--- a/gcc/config/microblaze/linux.h
+++ b/gcc/config/microblaze/linux.h
+@@ -28,10 +28,20 @@
+ #undef TLS_NEEDS_GOT
+ #define TLS_NEEDS_GOT 1
+ 
+-#define DYNAMIC_LINKER "/lib/ld.so.1"
+#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+
+#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
+#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:;:el}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:el}"
+#endif
+
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
+
+ #undef  SUBTARGET_EXTRA_SPECS
+ #define SUBTARGET_EXTRA_SPECS \
+-  { "dynamic_linker", DYNAMIC_LINKER }
+  { "dynamic_linker", GNU_USER_DYNAMIC_LINKER }
+ 
+ #undef LINK_SPEC
+ #define LINK_SPEC "%{shared:-shared} \
+diff --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
+index 91df261..fb358e2 100644
+--- a/gcc/config/mips/linux.h
+++ b/gcc/config/mips/linux.h
+@@ -37,7 +37,13 @@ along with GCC; see the file COPYING3.  If not see
+ #define UCLIBC_DYNAMIC_LINKERN32 \
+   "%{mnan=2008:/lib32/ld-uClibc-mipsn8.so.0;:/lib32/ld-uClibc.so.0}"
+ 
+#undef MUSL_DYNAMIC_LINKER32
+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-mips%{EL:el}%{msoft-float:-sf}.so.1"
+#undef MUSL_DYNAMIC_LINKER64
+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-mips64%{EL:el}%{msoft-float:-sf}.so.1"
+#define MUSL_DYNAMIC_LINKERN32 "/lib/ld-musl-mipsn32%{EL:el}%{msoft-float:-sf}.so.1"
+
+ #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32"
+ #define GNU_USER_DYNAMIC_LINKERN32 \
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \
+-                         BIONIC_DYNAMIC_LINKERN32)
+                         BIONIC_DYNAMIC_LINKERN32, MUSL_DYNAMIC_LINKERN32)
+diff --git a/gcc/config/rs6000/linux.h b/gcc/config/rs6000/linux.h
+index fe0ebd6..a68ff69 100644
+--- a/gcc/config/rs6000/linux.h
+++ b/gcc/config/rs6000/linux.h
+@@ -30,10 +30,14 @@
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+#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)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ /* Determine what functions are present at the runtime;
+diff --git a/gcc/config/rs6000/linux64.h b/gcc/config/rs6000/linux64.h
+index 0879e7e..6a7d435 100644
+--- a/gcc/config/rs6000/linux64.h
+++ b/gcc/config/rs6000/linux64.h
+@@ -299,10 +299,14 @@ extern int dot_symbols;
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+#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)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ /* Determine what functions are present at the runtime;
+@@ -365,17 +369,23 @@ extern int dot_symbols;
+ #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" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
+#define MUSL_DYNAMIC_LINKER64 \
+  "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.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 --git a/gcc/config/rs6000/secureplt.h b/gcc/config/rs6000/secureplt.h
+index b463463..77edf2a 100644
+--- a/gcc/config/rs6000/secureplt.h
+++ b/gcc/config/rs6000/secureplt.h
+@@ -18,3 +18,4 @@ along with GCC; see the file COPYING3.  If not see
+ <http://www.gnu.org/licenses/>.  */
+ 
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
+#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
+index 9917c2f..68365de 100644
+--- a/gcc/config/rs6000/sysv4.h
+++ b/gcc/config/rs6000/sysv4.h
+@@ -537,6 +537,9 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN)
+ #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.  */
+ #undef CC1_SPEC
+@@ -586,7 +589,8 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN)
+ 
+ /* 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 "\
+@@ -762,17 +766,23 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN)
+ 
+ #define LINK_START_LINUX_SPEC ""
+ 
+#define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("","le","")
+
+ #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" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.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} \
+@@ -895,6 +905,7 @@ ncrtn.o%s"
+   { "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 },			\
+@@ -949,3 +960,72 @@ ncrtn.o%s"
+ /* This target uses the sysv4.opt file.  */
+ #define TARGET_USES_SYSV4_OPT 1
+ 
+/* Include order changes for musl, same as in generic linux.h.  */
+#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
+diff --git a/gcc/config/rs6000/sysv4le.h b/gcc/config/rs6000/sysv4le.h
+index 7b1d6a1..064323c 100644
+--- a/gcc/config/rs6000/sysv4le.h
+++ b/gcc/config/rs6000/sysv4le.h
+@@ -35,3 +35,5 @@
+ /* Little-endian PowerPC64 Linux uses the ELF v2 ABI by default.  */
+ #define LINUX64_DEFAULT_ABI_ELFv2
+ 
+#undef MUSL_DYNAMIC_LINKER_E
+#define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("","le","le")
+diff --git a/gcc/config/sh/linux.h b/gcc/config/sh/linux.h
+index 0f5d614..4c167c6 100644
+--- a/gcc/config/sh/linux.h
+++ b/gcc/config/sh/linux.h
+@@ -43,6 +43,28 @@ along with GCC; see the file COPYING3.  If not see
+ 
+ #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+ 
+#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
+#define MUSL_DYNAMIC_LINKER_E "%{mb:eb}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{!ml:eb}"
+#endif
+
+#if TARGET_CPU_DEFAULT & ( MASK_HARD_SH2A_DOUBLE | MASK_SH4 )
+/* "-nofpu" if any nofpu option is specified */
+#define MUSL_DYNAMIC_LINKER_FP \
+  "%{m1|m2|m2a-nofpu|m3|m4-nofpu|m4-100-nofpu|m4-200-nofpu|m4-300-nofpu|" \
+  "m4-340|m4-400|m4-500|m4al|m5-32media-nofpu|m5-64media-nofpu|" \
+  "m5-compact-nofpu:-nofpu}"
+#else
+/* "-nofpu" if none of the hard fpu options are specified */
+#define MUSL_DYNAMIC_LINKER_FP \
+  "%{m2a|m4|m4-100|m4-200|m4-300|m4a|m5-32media|m5-64media|m5-compact:;:-nofpu}"
+#endif
+
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER \
+  "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E MUSL_DYNAMIC_LINKER_FP ".so.1"
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
+ #undef SUBTARGET_LINK_EMUL_SUFFIX
+diff --git a/gcc/configure b/gcc/configure
+index 0037240..66aab9f 100755
+--- a/gcc/configure
+++ b/gcc/configure
+@@ -27742,6 +27742,9 @@ if test "${gcc_cv_libc_provides_ssp+set}" = set; then :
+ else
+   gcc_cv_libc_provides_ssp=no
+     case "$target" in
+       *-*-musl*)
+	 # All versions of musl provide stack protector
+	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+       # glibc 2.4 and later provides __stack_chk_fail and
+       # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -27774,6 +27777,7 @@ fi
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+ 	 # realistically usable GNU/Hurd configurations.
+	 # All supported versions of musl provide it as well
+ 	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-darwin* | *-*-freebsd*)
+ 	 ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
+@@ -27870,6 +27874,9 @@ case "$target" in
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
+  *-linux-musl*)
+    gcc_cv_target_dl_iterate_phdr=yes
+    ;;
+ esac
+ 
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+diff --git a/gcc/configure.ac b/gcc/configure.ac
+index 6f38ba1..b81960c 100644
+--- a/gcc/configure.ac
+++ b/gcc/configure.ac
+@@ -5229,6 +5229,9 @@ AC_CACHE_CHECK(__stack_chk_fail in target C library,
+       gcc_cv_libc_provides_ssp,
+       [gcc_cv_libc_provides_ssp=no
+     case "$target" in
+       *-*-musl*)
+	 # All versions of musl provide stack protector
+	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+       # glibc 2.4 and later provides __stack_chk_fail and
+       # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -5255,6 +5258,7 @@ AC_CACHE_CHECK(__stack_chk_fail in target C library,
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+ 	 # realistically usable GNU/Hurd configurations.
+	 # All supported versions of musl provide it as well
+ 	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-darwin* | *-*-freebsd*)
+ 	 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+@@ -5328,6 +5332,9 @@ case "$target" in
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
+  *-linux-musl*)
+    gcc_cv_target_dl_iterate_phdr=yes
+    ;;
+ esac
+ GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
+index f84a199..ee9765b 100644
+--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
+@@ -667,7 +667,7 @@ Objective-C and Objective-C++ Dialects}.
+ -mcpu=@var{cpu}}
+ 
+ @emph{GNU/Linux Options}
+-@gccoptlist{-mglibc -muclibc -mbionic -mandroid @gol
+@gccoptlist{-mglibc -muclibc -mmusl -mbionic -mandroid @gol
+ -tno-android-cc -tno-android-ld}
+ 
+ @emph{H8/300 Options}
+@@ -15324,13 +15324,19 @@ These @samp{-m} options are defined for GNU/Linux targets:
+ @item -mglibc
+ @opindex mglibc
+ Use the GNU C library.  This is the default except
+-on @samp{*-*-linux-*uclibc*} and @samp{*-*-linux-*android*} targets.
+on @samp{*-*-linux-*uclibc*}, @samp{*-*-linux-*musl*} and
+@samp{*-*-linux-*android*} targets.
+ 
+ @item -muclibc
+ @opindex muclibc
+ Use uClibc C library.  This is the default on
+ @samp{*-*-linux-*uclibc*} targets.
+ 
+@item -mmusl
+@opindex mmusl
+Use the musl C library.  This is the default on
+@samp{*-*-linux-*musl*} targets.
+
+ @item -mbionic
+ @opindex mbionic
+ Use Bionic C library.  This is the default on
+diff --git a/libcilkrts/runtime/os-unix.c b/libcilkrts/runtime/os-unix.c
+index cb582dd..e43d7d5 100644
+--- a/libcilkrts/runtime/os-unix.c
+++ b/libcilkrts/runtime/os-unix.c
+@@ -51,6 +51,7 @@
+ #if defined __linux__
+ #   include <sys/sysinfo.h>
+ #   include <sys/syscall.h>
+#   include <sched.h>
+ #elif defined __APPLE__
+ #   include <sys/sysctl.h>
+     // Uses sysconf(_SC_NPROCESSORS_ONLN) in verbose output
+@@ -400,28 +401,19 @@ COMMON_SYSDEP void __cilkrts_sleep(void)
+ 
+ COMMON_SYSDEP void __cilkrts_yield(void)
+ {
+-#if __APPLE__ || __FreeBSD__ || __VXWORKS__
+-    // On MacOS, call sched_yield to yield quantum.  I'm not sure why we
+-    // don't do this on Linux also.
+-    sched_yield();
+-#elif defined(__DragonFly__)
+-    // On DragonFly BSD, call sched_yield to yield quantum.
+-    sched_yield();
+-#elif defined(__MIC__)
+#if defined(__MIC__)
+     // On MIC, pthread_yield() really trashes things.  Arch's measurements
+     // showed that calling _mm_delay_32() (or doing nothing) was a better
+     // option.  Delaying 1024 clock cycles is a reasonable compromise between
+     // giving up the processor and latency starting up when work becomes
+     // available
+     _mm_delay_32(1024);
+-#elif defined(__ANDROID__) || (defined(__sun__) && defined(__svr4__))
+-    // On Android and Solaris, call sched_yield to yield quantum.  I'm not
+-    // sure why we don't do this on Linux also.
+-    sched_yield();
+-#else
+-    // On Linux, call pthread_yield (which in turn will call sched_yield)
+-    // to yield quantum.
+#elif defined(__sun__) && !defined(__svr4__)
+    // On old SunOS call pthread_yield to yield a quantum.
+     pthread_yield();
+#else
+    // On other platforms call sched_yield to yield a quantum.
+    sched_yield();
+ #endif
+ }
+ 
+diff --git a/libgcc/unwind-dw2-fde-dip.c b/libgcc/unwind-dw2-fde-dip.c
+index e1e566b..137dced 100644
+--- a/libgcc/unwind-dw2-fde-dip.c
+++ b/libgcc/unwind-dw2-fde-dip.c
+@@ -59,6 +59,12 @@
+ 
+ #if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+     && defined(TARGET_DL_ITERATE_PHDR) \
+    && defined(__linux__)
+# define USE_PT_GNU_EH_FRAME
+#endif
+
+#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+    && defined(TARGET_DL_ITERATE_PHDR) \
+     && (defined(__DragonFly__) || defined(__FreeBSD__))
+ # define ElfW __ElfN
+ # define USE_PT_GNU_EH_FRAME
+diff --git a/libgfortran/acinclude.m4 b/libgfortran/acinclude.m4
+index ba890f9..30b8b1a6 100644
+--- a/libgfortran/acinclude.m4
+++ b/libgfortran/acinclude.m4
+@@ -100,7 +100,7 @@ void foo (void);
+ 	      [Define to 1 if the target supports #pragma weak])
+   fi
+   case "$host" in
+-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
+    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
+       AC_DEFINE(GTHREAD_USE_WEAK, 0,
+ 		[Define to 0 if the target shouldn't use #pragma weak])
+       ;;
+diff --git a/libgfortran/configure b/libgfortran/configure
+index e1592f7..07542e1 100755
+--- a/libgfortran/configure
+++ b/libgfortran/configure
+@@ -26447,7 +26447,7 @@ $as_echo "#define SUPPORTS_WEAK 1" >>confdefs.h
+ 
+   fi
+   case "$host" in
+-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
+    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
+ 
+ $as_echo "#define GTHREAD_USE_WEAK 0" >>confdefs.h
+ 
+diff --git a/libitm/config/arm/hwcap.cc b/libitm/config/arm/hwcap.cc
+index a1c2cfd..ea8f023 100644
+--- a/libitm/config/arm/hwcap.cc
+++ b/libitm/config/arm/hwcap.cc
+@@ -40,7 +40,7 @@ int GTM_hwcap HIDDEN = 0
+ 
+ #ifdef __linux__
+ #include <unistd.h>
+-#include <sys/fcntl.h>
+#include <fcntl.h>
+ #include <elf.h>
+ 
+ static void __attribute__((constructor))
+diff --git a/libitm/config/linux/x86/tls.h b/libitm/config/linux/x86/tls.h
+index e731ab7..54ad8b6 100644
+--- a/libitm/config/linux/x86/tls.h
+++ b/libitm/config/linux/x86/tls.h
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
+#if defined(__GLIBC_PREREQ)
+#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+    GLIBC has reserved words 10 through 13 for TM.  */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
+#endif
+ 
+ #include "config/generic/tls.h"
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
+#if defined(__GLIBC_PREREQ)
+#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+ 
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@ static inline void set_abi_disp(struct abi_dispatch *x)
+ 
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
+#endif
+ 
+ #endif // LIBITM_X86_TLS_H
+diff --git a/libstdc++-v3/config/os/generic/os_defines.h b/libstdc++-v3/config/os/generic/os_defines.h
+index 45bf52a..103ec0e 100644
+--- a/libstdc++-v3/config/os/generic/os_defines.h
+++ b/libstdc++-v3/config/os/generic/os_defines.h
+@@ -33,4 +33,9 @@
+ // System-specific #define, typedefs, corrections, etc, go here.  This
+ // file will come before all others.
+ 
+// Disable the weak reference logic in gthr.h for os/generic because it
+// is broken on every platform unless there is implementation specific
+// workaround in gthr-posix.h and at link-time for static linking.
+#define _GLIBCXX_GTHREAD_USE_WEAK 0
+
+ #endif
+diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
+index 640199c..106134e 100644
+--- a/libstdc++-v3/configure.host
+++ b/libstdc++-v3/configure.host
+@@ -273,6 +273,9 @@ case "${host_os}" in
+   freebsd*)
+     os_include_dir="os/bsd/freebsd"
+     ;;
+  linux-musl*)
+    os_include_dir="os/generic"
+    ;;
+   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+     if [ "$uclibc" = "yes" ]; then
+       os_include_dir="os/uclibc"
--- a/patches/gcc-5.2.0/0002-pr66609.diff
+++ b/patches/gcc-5.2.0/0002-pr66609.diff
@ -0,0 +1,138 @@
+--- a/gcc/config/sh/sh-protos.h	
+++ a/gcc/config/sh/sh-protos.h	
+@@ -159,6 +159,7 @@ extern int sh_eval_treg_value (rtx op);
+ extern HOST_WIDE_INT sh_disp_addr_displacement (rtx mem_op);
+ extern int sh_max_mov_insn_displacement (machine_mode mode, bool consider_sh2a);
+ extern bool sh_movsf_ie_ra_split_p (rtx, rtx, rtx);
+extern void sh_expand_sym_label2reg (rtx, rtx, rtx, bool);
+ 
+ /* Result value of sh_find_set_of_reg.  */
+ struct set_of_reg
+--- a/gcc/config/sh/sh.c	
+++ a/gcc/config/sh/sh.c	
+@@ -1604,6 +1604,10 @@ sh_asm_output_addr_const_extra (FILE *file, rtx x)
+ 	  output_addr_const (file, XVECEXP (x, 0, 0));
+ 	  fputs ("@GOTPLT", file);
+ 	  break;
+	case UNSPEC_PCREL:
+	  output_addr_const (file, XVECEXP (x, 0, 0));
+	  fputs ("@PCREL", file);
+	  break;
+ 	case UNSPEC_DTPOFF:
+ 	  output_addr_const (file, XVECEXP (x, 0, 0));
+ 	  fputs ("@DTPOFF", file);
+@@ -10441,6 +10445,7 @@ nonpic_symbol_mentioned_p (rtx x)
+ 	  || XINT (x, 1) == UNSPEC_DTPOFF
+ 	  || XINT (x, 1) == UNSPEC_TPOFF
+ 	  || XINT (x, 1) == UNSPEC_PLT
+	  || XINT (x, 1) == UNSPEC_PCREL
+ 	  || XINT (x, 1) == UNSPEC_SYMOFF
+ 	  || XINT (x, 1) == UNSPEC_PCREL_SYMOFF))
+     return false;
+@@ -10714,7 +10719,8 @@ sh_delegitimize_address (rtx orig_x)
+ 		  rtx symplt = XEXP (XVECEXP (y, 0, 0), 0);
+ 
+ 		  if (GET_CODE (symplt) == UNSPEC
+-		      && XINT (symplt, 1) == UNSPEC_PLT)
+		      && (XINT (symplt, 1) == UNSPEC_PLT
+			  || XINT (symplt, 1) == UNSPEC_PCREL))
+ 		    return XVECEXP (symplt, 0, 0);
+ 		}
+ 	    }
+@@ -11702,9 +11708,24 @@ sh_function_ok_for_sibcall (tree decl, tree exp ATTRIBUTE_UNUSED)
+ 	      || crtl->args.info.stack_regs == 0)
+ 	  && ! sh_cfun_interrupt_handler_p ()
+ 	  && (! flag_pic
+-	      || (decl && ! TREE_PUBLIC (decl))
+	      || (decl && ! (TREE_PUBLIC (decl) || DECL_WEAK (decl)))
+ 	      || (decl && DECL_VISIBILITY (decl) != VISIBILITY_DEFAULT)));
+ }
+
+/* Expand to appropriate sym*_label2reg for SYM and SIBCALL_P.  */
+void
+sh_expand_sym_label2reg (rtx reg, rtx sym, rtx lab, bool sibcall_p)
+{
+  const_tree decl = SYMBOL_REF_DECL (sym);
+  bool is_weak = (decl && DECL_P (decl) && DECL_WEAK (decl));
+
+  if (!is_weak && SYMBOL_REF_LOCAL_P (sym))
+    emit_insn (gen_sym_label2reg (reg, sym, lab));
+  else if (sibcall_p)
+    emit_insn (gen_symPCREL_label2reg (reg, sym, lab));
+  else
+    emit_insn (gen_symPLT_label2reg (reg, sym, lab));
+}
+ 
+ /* Machine specific built-in functions.  */
+ 
+--- a/gcc/config/sh/sh.md	
+++ a/gcc/config/sh/sh.md	
+@@ -135,6 +135,7 @@ 
+   UNSPEC_PLT
+   UNSPEC_CALLER
+   UNSPEC_GOTPLT
+  UNSPEC_PCREL
+   UNSPEC_ICACHE
+   UNSPEC_INIT_TRAMP
+   UNSPEC_FCOSA
+@@ -9470,11 +9471,8 @@ label:
+   [(const_int 0)]
+ {
+   rtx lab = PATTERN (gen_call_site ());
+-
+-  if (SYMBOL_REF_LOCAL_P (operands[0]))
+-    emit_insn (gen_sym_label2reg (operands[2], operands[0], lab));
+-  else
+-    emit_insn (gen_symPLT_label2reg (operands[2], operands[0], lab));
+  
+  sh_expand_sym_label2reg (operands[2], operands[0], lab, false);
+   emit_call_insn (gen_calli_pcrel (operands[2], operands[1], copy_rtx (lab)));
+   DONE;
+ }
+@@ -9605,10 +9603,7 @@ label:
+ {
+   rtx lab = PATTERN (gen_call_site ());
+ 
+-  if (SYMBOL_REF_LOCAL_P (operands[1]))
+-    emit_insn (gen_sym_label2reg (operands[3], operands[1], lab));
+-  else
+-    emit_insn (gen_symPLT_label2reg (operands[3], operands[1], lab));
+  sh_expand_sym_label2reg (operands[3], operands[1], lab, false);
+   emit_call_insn (gen_call_valuei_pcrel (operands[0], operands[3],
+ 					 operands[2], copy_rtx (lab)));
+   DONE;
+@@ -10008,7 +10003,7 @@ label:
+   rtx lab = PATTERN (gen_call_site ());
+   rtx call_insn;
+ 
+-  emit_insn (gen_sym_label2reg (operands[2], operands[0], lab));
+  sh_expand_sym_label2reg (operands[2], operands[0], lab, true);
+   call_insn = emit_call_insn (gen_sibcalli_pcrel (operands[2], operands[1],
+ 						  copy_rtx (lab)));
+   SIBLING_CALL_P (call_insn) = 1;
+@@ -10200,7 +10195,7 @@ label:
+   rtx lab = PATTERN (gen_call_site ());
+   rtx call_insn;
+ 
+-  emit_insn (gen_sym_label2reg (operands[3], operands[1], lab));
+  sh_expand_sym_label2reg (operands[3], operands[1], lab, true);
+   call_insn = emit_call_insn (gen_sibcall_valuei_pcrel (operands[0],
+ 							operands[3],
+ 							operands[2],
+@@ -10748,6 +10743,16 @@ label:
+ 			     UNSPEC_SYMOFF)))]
+   "TARGET_SH1" "")
+ 
+(define_expand "symPCREL_label2reg"
+  [(set (match_operand:SI 0 "" "")
+	(const:SI
+	 (unspec:SI
+	  [(const:SI (unspec:SI [(match_operand:SI 1 "" "")] UNSPEC_PCREL))
+	   (const:SI (plus:SI (match_operand:SI 2 "" "")
+			      (const_int 2)))] UNSPEC_PCREL_SYMOFF)))]
+  "TARGET_SH1"
+  "")
+
+ (define_expand "symGOT_load"
+   [(set (match_dup 2) (match_operand 1 "" ""))
+    (set (match_dup 3) (plus (match_dup 2) (reg PIC_REG)))
--- a/patches/gcc-5.2.0/0003-shbitrot.diff
+++ b/patches/gcc-5.2.0/0003-shbitrot.diff
@ -0,0 +1,11 @@
+--- gcc-5.2.0.orig/gcc/config.gcc
+++ gcc-5.2.0/gcc/config.gcc
+@@ -4096,7 +4099,7 @@
+ 		esac
+ 		;;
+ 
+-	sh[123456ble]-*-* | sh-*-*)
+	sh[123456ble]*-*-* | sh-*-*)
+ 		supported_defaults="cpu"
+ 		case "`echo $with_cpu | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ_ abcdefghijklmnopqrstuvwxyz- | sed s/sh/m/`" in
+ 		"" | m1 | m2 | m2e | m3 | m3e | m4 | m4-single | m4-single-only | m4-nofpu )
--- a/patches/gcc-5.2.0/0004-j2.diff
+++ b/patches/gcc-5.2.0/0004-j2.diff
@ -0,0 +1,91 @@
+--- gcc-5.2.0.orig/gcc/config.gcc
+++ gcc-5.2.0/gcc/config.gcc
+@@ -2668,7 +2671,7 @@
+ 	  sh2a-single-only | sh2a-single | sh2a-nofpu | sh2a | \
+ 	  sh4a-single-only | sh4a-single | sh4a-nofpu | sh4a | sh4al | \
+ 	  sh4-single-only | sh4-single | sh4-nofpu | sh4 | sh4-300 | \
+-	  sh3e | sh3 | sh2e | sh2 | sh1) ;;
+	  sh3e | sh3 | sh2e | sh2 | sh1 | shj2 ) ;;
+ 	"")	sh_cpu_default=${sh_cpu_target} ;;
+ 	*)	echo "with_cpu=$with_cpu not supported"; exit 1 ;;
+ 	esac
+@@ -2687,9 +2690,9 @@
+ 			sh_multilibs="`echo $sh_multilibs|sed -e s/m4/sh4-nofpu/ -e s/,m4-[^,]*//g -e s/,m[23]e// -e s/m2a,m2a-single/m2a-nofpu/ -e s/m5-..m....,//g`"
+ 		fi
+ 	fi
+-	target_cpu_default=SELECT_`echo ${sh_cpu_default}|tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`
+	target_cpu_default=SELECT_`echo ${sh_cpu_default}|sed 's/^shj/j/'|tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`
+ 	tm_defines=${tm_defines}' SH_MULTILIB_CPU_DEFAULT=\"'`echo $sh_cpu_default|sed s/sh/m/`'\"'
+-	tm_defines="$tm_defines SUPPORT_`echo $sh_cpu_default | sed 's/^m/sh/' | tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`=1"
+	tm_defines="$tm_defines SUPPORT_`echo $sh_cpu_default | sed -e 's/^m/sh/' -e 's/^shj/j/' | tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`=1"
+ 	sh_multilibs=`echo $sh_multilibs | sed -e 's/,/ /g' -e 's/^[Ss][Hh]/m/' -e 's/ [Ss][Hh]/ m/g' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ_ abcdefghijklmnopqrstuvwxyz-`
+ 	for sh_multilib in ${sh_multilibs}; do
+ 		case ${sh_multilib} in
+@@ -4106,6 +4109,8 @@
+ 			;;
+ 		m4a | m4a-single | m4a-single-only | m4a-nofpu | m4al)
+ 		        ;;
+		mj2)
+			;;
+ 		*)
+ 			echo "Unknown CPU used in --with-cpu=$with_cpu, known values:"  1>&2
+ 			echo "m1 m2 m2e m3 m3e m4 m4-single m4-single-only m4-nofpu" 1>&2
+--- gcc-5.2.0.orig/gcc/config/sh/sh.h
+++ gcc-5.2.0/gcc/config/sh/sh.h
+@@ -139,6 +139,7 @@
+ #define SELECT_SH2A_SINGLE	 (MASK_SH_E | MASK_HARD_SH2A \
+ 				  | MASK_FPU_SINGLE | MASK_HARD_SH2A_DOUBLE \
+ 				  | MASK_SH2 | MASK_SH1)
+#define SELECT_J2		 (MASK_SH2 | MASK_J2 | SELECT_SH1)
+ #define SELECT_SH3		 (MASK_SH3 | SELECT_SH2)
+ #define SELECT_SH3E		 (MASK_SH_E | MASK_FPU_SINGLE | SELECT_SH3)
+ #define SELECT_SH4_NOFPU	 (MASK_HARD_SH4 | SELECT_SH3)
+@@ -162,6 +163,9 @@
+ #define SUPPORT_SH2 1
+ #endif
+ #if SUPPORT_SH2
+#define SUPPORT_J2 1
+#endif
+#ifdef SUPPORT_J2
+ #define SUPPORT_SH3 1
+ #define SUPPORT_SH2A_NOFPU 1
+ #endif
+@@ -211,7 +215,7 @@
+ #define MASK_ARCH (MASK_SH1 | MASK_SH2 | MASK_SH3 | MASK_SH_E | MASK_SH4 \
+ 		   | MASK_HARD_SH2A | MASK_HARD_SH2A_DOUBLE | MASK_SH4A \
+ 		   | MASK_HARD_SH4 | MASK_FPU_SINGLE | MASK_SH5 \
+-		   | MASK_FPU_SINGLE_ONLY)
+		   | MASK_FPU_SINGLE_ONLY | MASK_J2)
+ 
+ /* This defaults us to big-endian.  */
+ #ifndef TARGET_ENDIAN_DEFAULT
+@@ -271,6 +275,7 @@
+ %(subtarget_asm_isa_spec) %(subtarget_asm_spec) \
+ %{m1:--isa=sh} \
+ %{m2:--isa=sh2} \
+%{mj2:--isa=any} \
+ %{m2e:--isa=sh2e} \
+ %{m3:--isa=sh3} \
+ %{m3e:--isa=sh3e} \
+@@ -1834,7 +1839,7 @@
+ 
+ /* Nonzero if the target supports dynamic shift instructions
+    like shad and shld.  */
+-#define TARGET_DYNSHIFT (TARGET_SH3 || TARGET_SH2A)
+#define TARGET_DYNSHIFT (TARGET_SH3 || TARGET_SH2A || TARGET_J2)
+ 
+ /* The cost of using the dynamic shift insns (shad, shld) are the same
+    if they are available.  If they are not available a library function will
+--- gcc-5.2.0.orig/gcc/config/sh/sh.opt
+++ gcc-5.2.0/gcc/config/sh/sh.opt
+@@ -71,6 +71,10 @@
+ Target RejectNegative Condition(SUPPORT_SH2E)
+ Generate SH2e code
+ 
+mj2
+Target RejectNegative Mask(J2) Condition(SUPPORT_J2)
+Generate J2 code
+
+ m3
+ Target RejectNegative Mask(SH3) Condition(SUPPORT_SH3)
+ Generate SH3 code
--- a/patches/gcc-5.2.0/0005-staticpie.diff
+++ b/patches/gcc-5.2.0/0005-staticpie.diff
@ -0,0 +1,24 @@
+--- gcc-5.2.0.orig/gcc/config/gnu-user.h	2015-01-05 12:33:28.000000000 +0000
+++ gcc-5.2.0/gcc/config/gnu-user.h	2015-08-25 08:15:18.354957759 +0000
+@@ -42,8 +42,8 @@
+ 
+ #if defined HAVE_LD_PIE
+ #define GNU_USER_TARGET_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} \
+  "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:%{static:rcrt1.o%s;:Scrt1.o%s};:crt1.o%s}} \
+   crti.o%s %{shared|pie:crtbeginS.o%s;static:crtbeginT.o%s;:crtbegin.o%s} \
+    %{fvtable-verify=none:%s; \
+      fvtable-verify=preinit:vtv_start_preinit.o%s; \
+      fvtable-verify=std:vtv_start.o%s}"
+--- gcc-5.2.0.orig/gcc/config/sh/linux.h	2015-01-05 12:33:28.000000000 +0000
+++ gcc-5.2.0/gcc/config/sh/linux.h	2015-08-25 07:57:14.161690536 +0000
+@@ -53,7 +75,7 @@
+    %{!static: \
+      %{rdynamic:-export-dynamic} \
+      -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
+-   %{static:-static}"
+   %{static:-static -E --no-dynamic-linker}"
+ 
+ /* Output assembler code to STREAM to call the profiler.  */
+ #undef FUNCTION_PROFILER
--- a/patches/gcc-5.2.0/0006-defaultpie.diff
+++ b/patches/gcc-5.2.0/0006-defaultpie.diff
@ -0,0 +1,19 @@
+--- gcc-5.2.0.orig/gcc/gcc.c	2015-03-10 09:37:41.000000000 +0000
+++ gcc-5.2.0/gcc/gcc.c	2015-08-25 07:47:12.895060530 +0000
+@@ -1012,10 +1012,15 @@
+ #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
+ #endif
+ 
+/* Default to PIE */
+#ifndef PIE_SELF_SPECS
+#define PIE_SELF_SPECS "%{shared|pie|r|nostdlib|nopie:;:-pie} %{fpic|fPIC|fpie|fPIE|fno-pic|fno-PIC|fno-pie|fno-PIE|D__KERNEL__:;:-fPIE}"
+#endif
+
+ static const char *const driver_self_specs[] = {
+   "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
+   DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS,
+-  CILK_SELF_SPECS
+  CILK_SELF_SPECS, PIE_SELF_SPECS
+ };
+ 
+ #ifndef OPTION_DEFAULT_SPECS
--- a/patches/musl-complex-hack
+++ b/patches/musl-complex-hack
@ -0,0 +1,2 @@
+$(patsubst %.c,%.o,$(wildcard src/complex/*.c)): CFLAGS += -fno-optimize-sibling-calls
+$(patsubst %.c,%.lo,$(wildcard src/complex/*.c)): CFLAGS += -fno-optimize-sibling-calls