main/gcc: implement crosscompiler creation and crossbuilding, musl fixes

1 files changed, 427 insertions, 34 deletions

diff --git a/main/gcc/gcc-4.8-musl.patch b/main/gcc/gcc-4.8-musl.patch
index 4c32a3e58..a394630b0 100644
--- a/main/gcc/gcc-4.8-musl.patch
+++ b/main/gcc/gcc-4.8-musl.patch
@@ -1,25 +1,51 @@
-11b7c7e47a01 tip
+--- a/gcc/config/aarch64/aarch64-linux.h	2013-01-10 21:38:27.000000000 +0100
++++ b/gcc/config/aarch64/aarch64-linux.h	2013-09-12 21:39:34.004829498 +0200
+@@ -21,7 +21,11 @@
+ #ifndef GCC_AARCH64_LINUX_H
+ #define GCC_AARCH64_LINUX_H
+ 
++/* The AArch64 port currently supports two dynamic linkers:
++   - ld-linux-aarch64.so.1 - GLIBC dynamic linker
++   - ld-musl-aarch64.so.1 - musl libc dynamic linker  */
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
+ 
+ #define LINUX_TARGET_LINK_SPEC  "%{h*}		\
+    %{static:-Bstatic}				\
 # HG changeset patch
-# Parent 6b1b8174ce29396d7dbd482296f43eba38948222
+# Parent e87035576969de2cc4d03decf5f81d682addf305
 Support for arm-linux-musl.
 
-diff -r 6b1b8174ce29 gcc/config/arm/linux-eabi.h
---- a/gcc/config/arm/linux-eabi.h	Fri Mar 29 16:41:20 2013 -0400
-+++ b/gcc/config/arm/linux-eabi.h	Fri Mar 29 16:41:23 2013 -0400
-@@ -77,6 +77,10 @@
+diff -r e87035576969 gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h	Sun Sep 08 16:10:51 2013 -0400
++++ b/gcc/config/arm/linux-eabi.h	Sun Sep 08 16:12:57 2013 -0400
+@@ -77,6 +77,23 @@
      %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
      %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
  
-+/* musl has no "classic" (i.e. broken) mode */
++/* 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 "/lib/ld-musl-arm.so.1"
++#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 -r 6b1b8174ce29 libitm/config/arm/hwcap.cc
---- a/libitm/config/arm/hwcap.cc	Fri Mar 29 16:41:20 2013 -0400
-+++ b/libitm/config/arm/hwcap.cc	Fri Mar 29 16:41:23 2013 -0400
+diff -r e87035576969 libitm/config/arm/hwcap.cc
+--- a/libitm/config/arm/hwcap.cc	Sun Sep 08 16:10:51 2013 -0400
++++ b/libitm/config/arm/hwcap.cc	Sun Sep 08 16:12:57 2013 -0400
 @@ -40,7 +40,11 @@
  
  #ifdef __linux__
@@ -32,13 +58,26 @@ diff -r 6b1b8174ce29 libitm/config/arm/hwcap.cc
  #include <elf.h>
  
  static void __attribute__((constructor))
+--- a/gcc/configure
++++ b/gcc/configure
+@@ -26970,6 +26970,9 @@
+       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
+
 # HG changeset patch
-# Parent 2b29df135cf04fe23c38301f6d0fc5796366aecf
+# Parent 572f7b4d1c50cefde3aa2c43d06040fc308ad989
 Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
 
-diff -r 2b29df135cf0 gcc/config.gcc
---- a/gcc/config.gcc	Fri Mar 29 16:41:11 2013 -0400
-+++ b/gcc/config.gcc	Fri Mar 29 16:41:14 2013 -0400
+diff -r 572f7b4d1c50 gcc/config.gcc
+--- a/gcc/config.gcc	Sun Sep 08 22:58:18 2013 -0400
++++ b/gcc/config.gcc	Mon Sep 09 12:48:34 2013 -0400
 @@ -549,7 +549,7 @@
  esac
  
@@ -58,9 +97,9 @@ diff -r 2b29df135cf0 gcc/config.gcc
      *)
        tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
        ;;
-diff -r 2b29df135cf0 gcc/config/linux.h
---- a/gcc/config/linux.h	Fri Mar 29 16:41:11 2013 -0400
-+++ b/gcc/config/linux.h	Fri Mar 29 16:41:14 2013 -0400
+diff -r 572f7b4d1c50 gcc/config/linux.h
+--- a/gcc/config/linux.h	Sun Sep 08 22:58:18 2013 -0400
++++ b/gcc/config/linux.h	Mon Sep 09 12:48:34 2013 -0400
 @@ -32,10 +32,12 @@
  #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
  #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
@@ -104,7 +143,7 @@ diff -r 2b29df135cf0 gcc/config/linux.h
  #else
  #error "Unsupported DEFAULT_LIBC"
  #endif /* DEFAULT_LIBC */
-@@ -84,16 +89,16 @@
+@@ -84,21 +89,21 @@
  
  #define GNU_USER_DYNAMIC_LINKER						\
    CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
@@ -125,9 +164,90 @@ diff -r 2b29df135cf0 gcc/config/linux.h
  
  /* Determine whether the entire c99 runtime
     is present in the runtime library.  */
-diff -r 2b29df135cf0 gcc/config/linux.opt
---- a/gcc/config/linux.opt	Fri Mar 29 16:41:11 2013 -0400
-+++ b/gcc/config/linux.opt	Fri Mar 29 16:41:14 2013 -0400
+ #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
+@@ -107,3 +112,74 @@
+ /* 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 -r 572f7b4d1c50 gcc/config/linux.opt
+--- a/gcc/config/linux.opt	Sun Sep 08 22:58:18 2013 -0400
++++ b/gcc/config/linux.opt	Mon Sep 09 12:48:34 2013 -0400
 @@ -30,3 +30,7 @@
  muclibc
  Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
@@ -136,9 +256,9 @@ diff -r 2b29df135cf0 gcc/config/linux.opt
 +mmusl
 +Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
 +Use musl C library
-diff -r 2b29df135cf0 gcc/ginclude/stddef.h
---- a/gcc/ginclude/stddef.h	Fri Mar 29 16:41:11 2013 -0400
-+++ b/gcc/ginclude/stddef.h	Fri Mar 29 16:41:14 2013 -0400
+diff -r 572f7b4d1c50 gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h	Sun Sep 08 22:58:18 2013 -0400
++++ b/gcc/ginclude/stddef.h	Mon Sep 09 12:48:34 2013 -0400
 @@ -181,6 +181,7 @@
  #ifndef _GCC_SIZE_T
  #ifndef _SIZET_
@@ -180,6 +300,246 @@ diff -r 2b94537ce249 libgomp/config/posix/time.c
  #include <unistd.h>
  #if TIME_WITH_SYS_TIME
 # HG changeset patch
+# Parent 94e435662aff38e86c9ca0dff4bbf451e0190b34
+Get rid of ever-broken fixincludes on musl.
+
+
+diff -r 94e435662aff -r e27957848dc8 fixincludes/mkfixinc.sh
+--- a/fixincludes/mkfixinc.sh	Sat Jul 27 23:37:20 2013 -0400
++++ b/fixincludes/mkfixinc.sh	Sat Jul 27 23:43:03 2013 -0400
+@@ -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" ) > ${target}
+# HG changeset patch
+# Parent 8eb8b35e72f3987450f5050db45d6e4425084fb5
+libssp is provided in musl libc.
+
+diff -r 8eb8b35e72f3 gcc/configure
+--- a/gcc/configure	Mon Aug 26 15:14:02 2013 -0400
++++ b/gcc/configure	Mon Aug 26 15:46:55 2013 -0400
+@@ -26764,7 +26764,8 @@
+          gcc_cv_libc_provides_ssp=yes
+       fi
+ 	;;
+-       *-*-gnu*)
++       *-*-gnu* | \
++       *-linux-musl*)
+ 	 # Avoid complicated tests (see
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+diff -r 8eb8b35e72f3 gcc/configure.ac
+--- a/gcc/configure.ac	Mon Aug 26 15:14:02 2013 -0400
++++ b/gcc/configure.ac	Mon Aug 26 15:46:55 2013 -0400
+@@ -4747,7 +4747,8 @@
+          gcc_cv_libc_provides_ssp=yes
+       fi]
+ 	;;
+-       *-*-gnu*)
++       *-*-gnu* | \
++       *-linux-musl*)
+ 	 # Avoid complicated tests (see
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+@@ -4817,6 +4818,9 @@
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
++  *-linux-musl*)
++    gcc_cv_target_dl_iterate_phdr=yes
++    ;;
+ esac
+ GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+diff -r 8eb8b35e72f3 libssp/Makefile.am
+--- a/libssp/Makefile.am	Mon Aug 26 15:14:02 2013 -0400
++++ b/libssp/Makefile.am	Mon Aug 26 15:46:55 2013 -0400
+@@ -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 -r 8eb8b35e72f3 libssp/Makefile.in
+--- a/libssp/Makefile.in	Mon Aug 26 15:14:02 2013 -0400
++++ b/libssp/Makefile.in	Mon Aug 26 15:46:55 2013 -0400
+@@ -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 -r 8eb8b35e72f3 libssp/configure
+--- a/libssp/configure	Mon Aug 26 15:14:02 2013 -0400
++++ b/libssp/configure	Mon Aug 26 15:46:55 2013 -0400
+@@ -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
+ $as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+@@ -10658,7 +10692,7 @@
+   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+   lt_status=$lt_dlunknown
+   cat > conftest.$ac_ext <<_LT_EOF
+-#line 10661 "configure"
++#line 10695 "configure"
+ #include "confdefs.h"
+ 
+ #if HAVE_DLFCN_H
+@@ -10764,7 +10798,7 @@
+   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+   lt_status=$lt_dlunknown
+   cat > conftest.$ac_ext <<_LT_EOF
+-#line 10767 "configure"
++#line 10801 "configure"
+ #include "confdefs.h"
+ 
+ #if HAVE_DLFCN_H
+@@ -11193,6 +11227,10 @@
+   as_fn_error "conditional \"LIBSSP_USE_SYMVER_SUN\" was never defined.
+ Usually this means the macro was only invoked conditionally." "$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
+ 
+ : ${CONFIG_STATUS=./config.status}
+ ac_write_fail=0
+diff -r 8eb8b35e72f3 libssp/configure.ac
+--- a/libssp/configure.ac	Mon Aug 26 15:14:02 2013 -0400
++++ b/libssp/configure.ac	Mon Aug 26 15:46:55 2013 -0400
+@@ -114,6 +114,26 @@
+ AM_CONDITIONAL(LIBSSP_USE_SYMVER_GNU, [test "x$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
+# HG changeset patch
 # Parent f50bb54f331f73405131a30b4f353cfda1c70304
 Use the generic implementation of libstdc++ primitives when we're on musl, not the glibc one.
 
@@ -331,17 +691,49 @@ diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
    { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
    { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
    { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
-diff -r 2ffe76b215fd libgcc/config/rs6000/linux-unwind.h
---- a/libgcc/config/rs6000/linux-unwind.h	Fri Mar 29 16:41:26 2013 -0400
-+++ b/libgcc/config/rs6000/linux-unwind.h	Fri Mar 29 16:41:28 2013 -0400
-@@ -258,6 +258,7 @@
+diff -r 7cba4201a2ae libgcc/unwind-dw2-fde-dip.c
+--- a/libgcc/unwind-dw2-fde-dip.c	Sat Jul 27 22:53:05 2013 -0400
++++ b/libgcc/unwind-dw2-fde-dip.c	Sat Jul 27 22:57:08 2013 -0400
+@@ -46,33 +46,13 @@
+ #include "unwind-compat.h"
+ #include "gthr.h"
  
-   return _URC_NO_REASON;
- }
-+#endif
- 
- #define MD_FROB_UPDATE_CONTEXT frob_update_context
+-#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)))
++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
+ # define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+-    && defined(__BIONIC__)
+-# 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__)
+-# 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)
 # HG changeset patch
 # Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
 Support for i386-linux-musl and x86_64-linux-musl.
@@ -397,3 +789,4 @@ diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
 +#endif
  
  #endif // LIBITM_X86_TLS_H
+