diff -Nur gcc-4.7.3.orig/config.sub gcc-4.7.3/config.sub
--- gcc-4.7.3.orig/config.sub	2012-08-06 16:34:27.000000000 +0200
+++ gcc-4.7.3/config.sub	2013-09-16 15:39:42.000000000 +0200
@@ -4,7 +4,7 @@
 #   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
 #   2011 Free Software Foundation, Inc.
 
-timestamp='2011-10-29'
+timestamp='2011-03-23'
 
 # This file is (in principle) common to ALL GNU software.
 # The presence of a machine in this file suggests that SOME GNU software
@@ -125,6 +125,7 @@
 maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
   nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+  linux-musl* | \
   linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
   knetbsd*-gnu* | netbsd*-gnu* | \
   kopensolaris*-gnu* | \
@@ -251,17 +252,13 @@
 	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
 	| am33_2.0 \
 	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
-        | be32 | be64 \
 	| bfin \
 	| c4x | clipper \
 	| d10v | d30v | dlx | dsp16xx \
-	| epiphany \
 	| fido | fr30 | frv \
 	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
-	| hexagon \
 	| i370 | i860 | i960 | ia64 \
 	| ip2k | iq2000 \
-	| le32 | le64 \
 	| lm32 \
 	| m32c | m32r | m32rle | m68000 | m68k | m88k \
 	| maxq | mb | microblaze | mcore | mep | metag \
@@ -295,7 +292,7 @@
 	| pdp10 | pdp11 | pj | pjl \
 	| powerpc | powerpc64 | powerpc64le | powerpcle \
 	| pyramid \
-	| rl78 | rx \
+	| rx \
 	| score \
 	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
 	| sh64 | sh64le \
@@ -304,7 +301,7 @@
 	| spu \
 	| tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
 	| ubicom32 \
-	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
+	| v850 | v850e \
 	| we32k \
 	| x86 | xc16x | xstormy16 | xtensa \
 	| z8k | z80)
@@ -361,7 +358,6 @@
 	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
 	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
 	| avr-* | avr32-* \
-	| be32-* | be64-* \
 	| bfin-* | bs2000-* \
 	| c[123]* | c30-* | [cjt]90-* | c4x-* \
 	| clipper-* | craynv-* | cydra-* \
@@ -370,10 +366,8 @@
 	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
 	| h8300-* | h8500-* \
 	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
-	| hexagon-* \
 	| i*86-* | i860-* | i960-* | ia64-* \
 	| ip2k-* | iq2000-* \
-	| le32-* | le64-* \
 	| lm32-* \
 	| m32c-* | m32r-* | m32rle-* \
 	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
@@ -407,7 +401,7 @@
 	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
 	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
 	| pyramid-* \
-	| rl78-* | romp-* | rs6000-* | rx-* \
+	| romp-* | rs6000-* | rx-* \
 	| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
 	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
 	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
@@ -415,11 +409,10 @@
 	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx?-* \
 	| tahoe-* \
 	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
-	| tile*-* \
+	| tile-* | tilegx-* \
 	| tron-* \
 	| ubicom32-* \
-	| v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \
-	| vax-* \
+	| v850-* | v850e-* | vax-* \
 	| we32k-* \
 	| x86-* | x86_64-* | xc16x-* | xps100-* \
 	| xstormy16-* | xtensa*-* \
@@ -820,10 +813,6 @@
 		basic_machine=i370-ibm
 		os=-mvs
 		;;
-	nacl)
-		basic_machine=le32-unknown
-		os=-nacl
-		;;
 	ncr3000)
 		basic_machine=i486-ncr
 		os=-sysv4
@@ -1132,8 +1121,13 @@
 		basic_machine=t90-cray
 		os=-unicos
 		;;
+	# This must be matched before tile*.
+	tilegx*)
+		basic_machine=tilegx-unknown
+		os=-linux-gnu
+		;;
 	tile*)
-		basic_machine=$basic_machine-unknown
+		basic_machine=tile-unknown
 		os=-linux-gnu
 		;;
 	tx39)
@@ -1346,6 +1340,7 @@
 	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
 	      | -mingw32* | -linux-gnu* | -linux-android* \
 	      | -linux-newlib* | -linux-uclibc* \
+	      | -linux-musl* \
 	      | -uxpv* | -beos* | -mpeix* | -udk* \
 	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
 	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
diff -Nur gcc-4.7.3.orig/fixincludes/mkfixinc.sh gcc-4.7.3/fixincludes/mkfixinc.sh
--- gcc-4.7.3.orig/fixincludes/mkfixinc.sh	2011-09-22 16:00:17.000000000 +0200
+++ gcc-4.7.3/fixincludes/mkfixinc.sh	2013-09-16 15:39:42.000000000 +0200
@@ -20,7 +20,8 @@
     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-4.7.3.orig/gcc/config/arm/linux-eabi.h gcc-4.7.3/gcc/config/arm/linux-eabi.h
--- gcc-4.7.3.orig/gcc/config/arm/linux-eabi.h	2011-11-02 16:03:19.000000000 +0100
+++ gcc-4.7.3/gcc/config/arm/linux-eabi.h	2013-09-16 15:39:42.000000000 +0200
@@ -64,6 +64,23 @@
 #undef  GLIBC_DYNAMIC_LINKER
 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
 
+/* For ARM musl currently supports two 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.
+   musl does not support the legacy OABI (i.e. broken) mode.
+   All the dynamic linkers live in /lib.
+   We default to soft-float, but this can be overridden by changing both
+   MUSL_DYNAMIC_LINKER_DEFAULT and TARGET_DEFAULT_FLOAT_ABI.  */
+#undef  MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER_SOFT_FLOAT "/lib/ld-musl-arm.so.1"
+#define MUSL_DYNAMIC_LINKER_HARD_FLOAT "/lib/ld-musl-armhf.so.1"
+#define MUSL_DYNAMIC_LINKER_DEFAULT MUSL_DYNAMIC_LINKER_SOFT_FLOAT
+
+#define MUSL_DYNAMIC_LINKER \
+  "%{mfloat-abi=hard:" MUSL_DYNAMIC_LINKER_HARD_FLOAT "} \
+   %{mfloat-abi=soft*:" MUSL_DYNAMIC_LINKER_SOFT_FLOAT "} \
+   %{!mfloat-abi=*:" MUSL_DYNAMIC_LINKER_DEFAULT "}"
+
 /* 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-4.7.3.orig/gcc/config/i386/linux64.h gcc-4.7.3/gcc/config/i386/linux64.h
--- gcc-4.7.3.orig/gcc/config/i386/linux64.h	2011-07-07 17:38:34.000000000 +0200
+++ gcc-4.7.3/gcc/config/i386/linux64.h	2013-09-16 15:39:42.000000000 +0200
@@ -31,3 +31,7 @@
 #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-4.7.3.orig/gcc/config/i386/linux.h gcc-4.7.3/gcc/config/i386/linux.h
--- gcc-4.7.3.orig/gcc/config/i386/linux.h	2011-06-03 20:30:39.000000000 +0200
+++ gcc-4.7.3/gcc/config/i386/linux.h	2013-09-16 15:39:42.000000000 +0200
@@ -22,3 +22,4 @@
 
 #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-4.7.3.orig/gcc/config/linux.h gcc-4.7.3/gcc/config/linux.h
--- gcc-4.7.3.orig/gcc/config/linux.h	2012-08-14 15:59:04.000000000 +0200
+++ gcc-4.7.3/gcc/config/linux.h	2013-09-16 15:39:42.000000000 +0200
@@ -33,10 +33,12 @@
 #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()			\
@@ -54,18 +56,21 @@
    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 */
@@ -85,21 +90,21 @@
 
 #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)
 
 /* Determine whether the entire c99 runtime
    is present in the runtime library.  */
 #undef TARGET_C99_FUNCTIONS
-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
+#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
 
 /* Whether we have sincos that follows the GNU extension.  */
 #undef TARGET_HAS_SINCOS
@@ -108,3 +113,74 @@
 /* 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
diff -Nur gcc-4.7.3.orig/gcc/config/linux.opt gcc-4.7.3/gcc/config/linux.opt
--- gcc-4.7.3.orig/gcc/config/linux.opt	2010-09-29 16:51:52.000000000 +0200
+++ gcc-4.7.3/gcc/config/linux.opt	2013-09-16 15:39:42.000000000 +0200
@@ -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-4.7.3.orig/gcc/config/mips/linux.h gcc-4.7.3/gcc/config/mips/linux.h
--- gcc-4.7.3.orig/gcc/config/mips/linux.h	2011-07-19 20:00:27.000000000 +0200
+++ gcc-4.7.3/gcc/config/mips/linux.h	2013-09-16 15:39:43.000000000 +0200
@@ -19,3 +19,5 @@
 <http://www.gnu.org/licenses/>.  */
 
 #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
diff -Nur gcc-4.7.3.orig/gcc/config/rs6000/linux64.h gcc-4.7.3/gcc/config/rs6000/linux64.h
--- gcc-4.7.3.orig/gcc/config/rs6000/linux64.h	2012-03-12 17:16:51.000000000 +0100
+++ gcc-4.7.3/gcc/config/rs6000/linux64.h	2013-09-16 15:39:43.000000000 +0200
@@ -362,17 +362,21 @@
 #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
 #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)
 
 
 #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
diff -Nur gcc-4.7.3.orig/gcc/config/rs6000/sysv4.h gcc-4.7.3/gcc/config/rs6000/sysv4.h
--- gcc-4.7.3.orig/gcc/config/rs6000/sysv4.h	2012-04-30 19:39:01.000000000 +0200
+++ gcc-4.7.3/gcc/config/rs6000/sysv4.h	2013-09-16 15:39:43.000000000 +0200
@@ -804,15 +808,18 @@
 
 #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} \
diff -Nur gcc-4.7.3.orig/gcc/config.gcc gcc-4.7.3/gcc/config.gcc
--- gcc-4.7.3.orig/gcc/config.gcc	2013-03-06 23:54:11.000000000 +0100
+++ gcc-4.7.3/gcc/config.gcc	2013-09-16 15:39:43.000000000 +0200
@@ -522,7 +522,7 @@
 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"
 
 # Common parts for widely ported systems.
 case ${target} in
@@ -625,6 +625,9 @@
     *-*-*uclibc*)
       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
       ;;
+    *-*-*musl*)
+      tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
+      ;;
     *)
       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
       ;;
@@ -2092,6 +2095,10 @@
 	    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-4.7.3.orig/gcc/configure gcc-4.7.3/gcc/configure
--- gcc-4.7.3.orig/gcc/configure	2013-02-06 16:23:55.000000000 +0100
+++ gcc-4.7.3/gcc/configure	2013-09-16 15:39:43.000000000 +0200
@@ -26815,7 +26815,8 @@
          gcc_cv_libc_provides_ssp=yes
       fi
 	;;
-       *-*-gnu*)
+       *-*-gnu* | \
+       *-linux-musl*)
 	 # Avoid complicated tests (see
 	 # <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
@@ -26902,6 +26903,9 @@
       gcc_cv_target_dl_iterate_phdr=no
     fi
     ;;
+  *-linux-musl*)
+    gcc_cv_target_dl_iterate_phdr=yes
+    ;;
 esac
 
 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
diff -Nur gcc-4.7.3.orig/gcc/configure.ac gcc-4.7.3/gcc/configure.ac
--- gcc-4.7.3.orig/gcc/configure.ac	2013-02-06 16:23:55.000000000 +0100
+++ gcc-4.7.3/gcc/configure.ac	2013-09-16 15:39:43.000000000 +0200
@@ -4692,7 +4692,8 @@
          gcc_cv_libc_provides_ssp=yes
       fi]
 	;;
-       *-*-gnu*)
+       *-*-gnu* | \
+       *-linux-musl*)
 	 # Avoid complicated tests (see
 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
 	 # simply assert that glibc does provide this, which is true for all
@@ -4762,6 +4763,9 @@
       gcc_cv_target_dl_iterate_phdr=no
     fi
     ;;
+  *-linux-musl*)
+    gcc_cv_target_dl_iterate_phdr=yes
+    ;;
 esac
 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
diff -Nur gcc-4.7.3.orig/gcc/ginclude/stddef.h gcc-4.7.3/gcc/ginclude/stddef.h
--- gcc-4.7.3.orig/gcc/ginclude/stddef.h	2012-02-12 02:06:04.000000000 +0100
+++ gcc-4.7.3/gcc/ginclude/stddef.h	2013-09-16 15:39:43.000000000 +0200
@@ -184,6 +184,7 @@
 #ifndef _GCC_SIZE_T
 #ifndef _SIZET_
 #ifndef __size_t
+#ifndef __DEFINED_size_t /* musl */
 #define __size_t__	/* BeOS */
 #define __SIZE_T__	/* Cray Unicos/Mk */
 #define _SIZE_T
@@ -200,6 +201,7 @@
 #define ___int_size_t_h
 #define _GCC_SIZE_T
 #define _SIZET_
+#define __DEFINED_size_t /* musl */
 #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
   || defined(__FreeBSD_kernel__)
 /* __size_t is a typedef on FreeBSD 5, must not trash it. */
@@ -215,6 +217,7 @@
 typedef long ssize_t;
 #endif /* __BEOS__ */
 #endif /* !(defined (__GNUG__) && defined (size_t)) */
+#endif /* __DEFINED_size_t */
 #endif /* __size_t */
 #endif /* _SIZET_ */
 #endif /* _GCC_SIZE_T */
diff -Nur gcc-4.7.3.orig/libgcc/unwind-dw2-fde-dip.c gcc-4.7.3/libgcc/unwind-dw2-fde-dip.c
--- gcc-4.7.3.orig/libgcc/unwind-dw2-fde-dip.c	2012-10-06 23:55:06.000000000 +0200
+++ gcc-4.7.3/libgcc/unwind-dw2-fde-dip.c	2013-09-16 15:39:43.000000000 +0200
@@ -47,28 +47,13 @@
 #include "unwind-compat.h"
 #include "gthr.h"
 
-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-    && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
-	|| (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
-# define USE_PT_GNU_EH_FRAME
-#endif
-
-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-    && defined(__FreeBSD__) && __FreeBSD__ >= 7
-# define ElfW __ElfN
-# define USE_PT_GNU_EH_FRAME
-#endif
-
-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-    && defined(__OpenBSD__)
-# define ElfW(type) Elf_##type
-# define USE_PT_GNU_EH_FRAME
-#endif
-
-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-    && defined(TARGET_DL_ITERATE_PHDR) \
-    && defined(__sun__) && defined(__svr4__)
+#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
 # define USE_PT_GNU_EH_FRAME
+# ifdef __OpenBSD__
+#  define ElfW(type) Elf_##typ
+# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
+#  define ElfW __ElfN
+# endif
 #endif
 
 #if defined(USE_PT_GNU_EH_FRAME)
diff -Nur gcc-4.7.3.orig/libgomp/config/posix/time.c gcc-4.7.3/libgomp/config/posix/time.c
--- gcc-4.7.3.orig/libgomp/config/posix/time.c	2009-04-09 17:00:19.000000000 +0200
+++ gcc-4.7.3/libgomp/config/posix/time.c	2013-09-16 15:39:43.000000000 +0200
@@ -28,6 +28,8 @@
    The following implementation uses the most simple POSIX routines.
    If present, POSIX 4 clocks should be used instead.  */
 
+#define _POSIX_C_SOURCE 199309L /* for clocks */
+
 #include "libgomp.h"
 #include <unistd.h>
 #if TIME_WITH_SYS_TIME
diff -Nur gcc-4.7.3.orig/libitm/config/arm/hwcap.cc gcc-4.7.3/libitm/config/arm/hwcap.cc
--- gcc-4.7.3.orig/libitm/config/arm/hwcap.cc	2011-12-15 04:24:05.000000000 +0100
+++ gcc-4.7.3/libitm/config/arm/hwcap.cc	2013-09-16 15:39:43.000000000 +0200
@@ -40,7 +40,11 @@
 
 #ifdef __linux__
 #include <unistd.h>
+#ifdef __GLIBC__
 #include <sys/fcntl.h>
+#else
+#include <fcntl.h>
+#endif
 #include <elf.h>
 
 static void __attribute__((constructor))
diff -Nur gcc-4.7.3.orig/libitm/config/linux/x86/tls.h gcc-4.7.3/libitm/config/linux/x86/tls.h
--- gcc-4.7.3.orig/libitm/config/linux/x86/tls.h	2011-11-08 12:13:41.000000000 +0100
+++ gcc-4.7.3/libitm/config/linux/x86/tls.h	2013-09-16 15:39:43.000000000 +0200
@@ -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 @@
 
 } // namespace GTM
 #endif /* >= GLIBC 2.10 */
+#endif
 
 #endif // LIBITM_X86_TLS_H
diff -Nur gcc-4.7.3.orig/libssp/configure gcc-4.7.3/libssp/configure
--- gcc-4.7.3.orig/libssp/configure	2012-08-06 16:34:27.000000000 +0200
+++ gcc-4.7.3/libssp/configure	2013-09-16 15:39:43.000000000 +0200
@@ -626,6 +626,8 @@
 ssp_have_usable_vsnprintf
 EGREP
 GREP
+LIBSSP_IN_LIBC_FALSE
+LIBSSP_IN_LIBC_TRUE
 LIBSSP_USE_SYMVER_SUN_FALSE
 LIBSSP_USE_SYMVER_SUN_TRUE
 LIBSSP_USE_SYMVER_GNU_FALSE
@@ -735,6 +737,7 @@
 enable_multilib
 enable_dependency_tracking
 enable_symvers
+enable_ssp_in_libc
 enable_shared
 enable_static
 with_pic
@@ -1374,6 +1377,7 @@
   --disable-dependency-tracking  speeds up one-time build
   --enable-dependency-tracking   do not reject slow dependency extractors
   --disable-symvers       disable symbol versioning for libssp
+  --enable-ssp-in-libc    do not build SSP, as it is in libc
   --enable-shared[=PKGS]  build shared libraries [default=yes]
   --enable-static[=PKGS]  build static libraries [default=yes]
   --enable-fast-install[=PKGS]
@@ -4206,6 +4210,36 @@
 fi
 
 
+# musl provides libssp in libc
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether libssp is provided in libc" >&5
+$as_echo_n "checking whether libssp is provided in libc... " >&6; }
+# Check whether --enable-ssp_in_libc was given.
+if test "${enable_ssp_in_libc+set}" = set; then :
+  enableval=$enable_ssp_in_libc; ssp_in_libc=$enableval
+else
+  ssp_in_libc=check
+fi
+
+if test "x$ssp_in_libc" = "xcheck"; then
+  case "$host" in
+    *-musl*)
+      ssp_in_libc=yes
+      ;;
+
+    *)
+      ssp_in_libc=no
+      ;;
+  esac
+fi
+ if test "x$ssp_in_libc" = xyes; then
+  LIBSSP_IN_LIBC_TRUE=
+  LIBSSP_IN_LIBC_FALSE='#'
+else
+  LIBSSP_IN_LIBC_TRUE='#'
+  LIBSSP_IN_LIBC_FALSE=
+fi
+
+
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
 $as_echo_n "checking for grep that handles long lines and -e... " >&6; }
@@ -10650,7 +10684,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10653 "configure"
+#line 10687 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10756,7 +10790,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10759 "configure"
+#line 10793 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11185,6 +11219,10 @@
   as_fn_error "conditional \"LIBSSP_USE_SYMVER_SUN\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${LIBSSP_IN_LIBC_TRUE}" && test -z "${LIBSSP_IN_LIBC_FALSE}"; then
+  as_fn_error "conditional \"LIBSSP_IN_LIBC\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 
 : ${CONFIG_STATUS=./config.status}
 ac_write_fail=0
diff -Nur gcc-4.7.3.orig/libssp/configure.ac gcc-4.7.3/libssp/configure.ac
--- gcc-4.7.3.orig/libssp/configure.ac	2012-05-31 20:59:34.000000000 +0200
+++ gcc-4.7.3/libssp/configure.ac	2013-09-16 15:39:43.000000000 +0200
@@ -114,6 +114,26 @@
 AM_CONDITIONAL(LIBSSP_USE_SYMVER_GNU, [test "x$ssp_use_symver" = xgnu])
 AM_CONDITIONAL(LIBSSP_USE_SYMVER_SUN, [test "x$ssp_use_symver" = xsun])
 
+# musl provides libssp in libc
+AC_MSG_CHECKING([whether libssp is provided in libc])
+AC_ARG_ENABLE(ssp_in_libc,
+AC_HELP_STRING([--enable-ssp-in-libc],
+  [do not build SSP, as it is in libc]),
+ssp_in_libc=$enableval,
+ssp_in_libc=check)
+if test "x$ssp_in_libc" = "xcheck"; then
+  case "$host" in
+    *-musl*)
+      ssp_in_libc=yes
+      ;;
+
+    *)
+      ssp_in_libc=no
+      ;;
+  esac
+fi
+AM_CONDITIONAL(LIBSSP_IN_LIBC, [test "x$ssp_in_libc" = xyes])
+
 AC_CHECK_HEADERS(alloca.h malloc.h paths.h syslog.h string.h unistd.h fcntl.h stdio.h limits.h)
 
 if test x$gcc_no_link = xyes; then
diff -Nur gcc-4.7.3.orig/libssp/Makefile.am gcc-4.7.3/libssp/Makefile.am
--- gcc-4.7.3.orig/libssp/Makefile.am	2010-12-06 01:50:04.000000000 +0100
+++ gcc-4.7.3/libssp/Makefile.am	2013-09-16 15:39:43.000000000 +0200
@@ -36,7 +36,11 @@
 
 AM_CFLAGS = -Wall
 
+if LIBSSP_IN_LIBC
+toolexeclib_LTLIBRARIES = libssp_nonshared.la
+else
 toolexeclib_LTLIBRARIES = libssp.la libssp_nonshared.la
+endif
 
 target_noncanonical = @target_noncanonical@
 libsubincludedir = $(libdir)/gcc/$(target_noncanonical)/$(gcc_version)/include
diff -Nur gcc-4.7.3.orig/libssp/Makefile.in gcc-4.7.3/libssp/Makefile.in
--- gcc-4.7.3.orig/libssp/Makefile.in	2011-02-13 12:45:53.000000000 +0100
+++ gcc-4.7.3/libssp/Makefile.in	2013-09-16 15:39:43.000000000 +0200
@@ -93,12 +93,17 @@
 libssp_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 	$(libssp_la_LDFLAGS) $(LDFLAGS) -o $@
+@LIBSSP_IN_LIBC_FALSE@am_libssp_la_rpath = -rpath $(toolexeclibdir)
 am_libssp_nonshared_la_OBJECTS = libssp_nonshared_la-ssp-local.lo
 libssp_nonshared_la_OBJECTS = $(am_libssp_nonshared_la_OBJECTS)
 libssp_nonshared_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) \
 	$(libssp_nonshared_la_CFLAGS) $(CFLAGS) \
 	$(libssp_nonshared_la_LDFLAGS) $(LDFLAGS) -o $@
+@LIBSSP_IN_LIBC_FALSE@am_libssp_nonshared_la_rpath = -rpath \
+@LIBSSP_IN_LIBC_FALSE@	$(toolexeclibdir)
+@LIBSSP_IN_LIBC_TRUE@am_libssp_nonshared_la_rpath = -rpath \
+@LIBSSP_IN_LIBC_TRUE@	$(toolexeclibdir)
 DEFAULT_INCLUDES = -I.@am__isrc@
 depcomp = $(SHELL) $(top_srcdir)/../depcomp
 am__depfiles_maybe = depfiles
@@ -258,7 +263,8 @@
 @LIBSSP_USE_SYMVER_GNU_TRUE@@LIBSSP_USE_SYMVER_TRUE@version_dep = $(srcdir)/ssp.map
 @LIBSSP_USE_SYMVER_SUN_TRUE@@LIBSSP_USE_SYMVER_TRUE@version_dep = ssp.map-sun
 AM_CFLAGS = -Wall
-toolexeclib_LTLIBRARIES = libssp.la libssp_nonshared.la
+@LIBSSP_IN_LIBC_FALSE@toolexeclib_LTLIBRARIES = libssp.la libssp_nonshared.la
+@LIBSSP_IN_LIBC_TRUE@toolexeclib_LTLIBRARIES = libssp_nonshared.la
 libsubincludedir = $(libdir)/gcc/$(target_noncanonical)/$(gcc_version)/include
 nobase_libsubinclude_HEADERS = ssp/ssp.h ssp/string.h ssp/stdio.h ssp/unistd.h
 libssp_la_SOURCES = \
@@ -414,9 +420,9 @@
 	  rm -f "$${dir}/so_locations"; \
 	done
 libssp.la: $(libssp_la_OBJECTS) $(libssp_la_DEPENDENCIES) 
-	$(libssp_la_LINK) -rpath $(toolexeclibdir) $(libssp_la_OBJECTS) $(libssp_la_LIBADD) $(LIBS)
+	$(libssp_la_LINK) $(am_libssp_la_rpath) $(libssp_la_OBJECTS) $(libssp_la_LIBADD) $(LIBS)
 libssp_nonshared.la: $(libssp_nonshared_la_OBJECTS) $(libssp_nonshared_la_DEPENDENCIES) 
-	$(libssp_nonshared_la_LINK) -rpath $(toolexeclibdir) $(libssp_nonshared_la_OBJECTS) $(libssp_nonshared_la_LIBADD) $(LIBS)
+	$(libssp_nonshared_la_LINK) $(am_libssp_nonshared_la_rpath) $(libssp_nonshared_la_OBJECTS) $(libssp_nonshared_la_LIBADD) $(LIBS)
 
 mostlyclean-compile:
 	-rm -f *.$(OBJEXT)
diff -Nur gcc-4.7.3.orig/libstdc++-v3/configure.host gcc-4.7.3/libstdc++-v3/configure.host
--- gcc-4.7.3.orig/libstdc++-v3/configure.host	2012-12-18 15:27:14.000000000 +0100
+++ gcc-4.7.3/libstdc++-v3/configure.host	2013-09-16 15:39:43.000000000 +0200
@@ -243,6 +243,13 @@
     os_include_dir="os/bsd/freebsd"
     ;;
   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+    # check for musl by target
+    case "${host_os}" in
+      *-musl*)
+        os_include_dir="os/generic"
+        ;;
+      *)
+
     if [ "$uclibc" = "yes" ]; then
       os_include_dir="os/uclibc"
     elif [ "$bionic" = "yes" ]; then
@@ -251,6 +258,9 @@
       os_include_dir="os/gnu-linux"
     fi
     ;;
+
+    esac
+    ;;
   hpux*)
     os_include_dir="os/hpux"
     ;;
