--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/arm-linux
+. $TOPDIR/include/site/linux-uclibc
+
--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/arm-linux
+. $TOPDIR/include/site/linux-uclibc
+
--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/armeb-linux
+. $TOPDIR/include/site/linux-uclibc
+
--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/armeb-linux
+. $TOPDIR/include/site/linux-uclibc
+
--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/i486-linux
+. $TOPDIR/include/site/linux-uclibc
+
--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/i686-linux
+. $TOPDIR/include/site/linux-uclibc
+
--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/mips-linux
+. $TOPDIR/include/site/linux-uclibc
+
--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/mipsel-linux
+. $TOPDIR/include/site/linux-uclibc
+
--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/powerpc-linux
+. $TOPDIR/include/site/linux-uclibc
+
--- /dev/null
+#!/bin/sh
+
+. $TOPDIR/include/site/x86_64-linux
+. $TOPDIR/include/site/linux-uclibc
+
VERSION:=1.0-beta-$(PKG_RELEASE)
TITLE:=Version 1.0 Dynamic device management subsystem for embedded systems
URL:=http://isteve.bofh.cz/~isteve/hotplug2/
- DEPENDS:=+!USE_UCLIBC:libbsd
+ DEPENDS:=+!(USE_UCLIBC||USE_MUSL):libbsd
endef
define Package/hotplug2/description
define Package/libbsd
SECTION:=libs
CATEGORY:=Libraries
- DEPENDS:=@!USE_UCLIBC
+ DEPENDS:=@!(USE_UCLIBC||USE_MUSL)
TITLE:=common BSD library
endef
$(1)/lib/
endef
+ define Package/musl/install
+ $(INSTALL_DIR) $(1)/lib
+ $(CP) \
+ $(TOOLCHAIN_DIR)/lib/ld-musl-*.so* \
+ $(1)/lib/
+ $(CP) \
+ $(TOOLCHAIN_DIR)/lib/libc.so* \
+ $(1)/lib/
+ endef
+
define Package/libc/install
$(call Package/$(LIBC)/install,$1)
endef
linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
knetbsd*-gnu* | netbsd*-gnu* | \
kopensolaris*-gnu* | \
- storm-chaos* | os2-emx* | rtmk-nova*)
+ storm-chaos* | os2-emx* | rtmk-nova* | \
+ linux-musl*)
os=-$maybe_os
basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
;;
| -chorusos* | -chorusrdb* | -cegcc* \
| -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
| -mingw32* | -linux-gnu* | -linux-android* \
- | -linux-newlib* | -linux-uclibc* \
+ | -linux-newlib* | -linux-uclibc* | -linux-musl* \
| -uxpv* | -beos* | -mpeix* | -udk* \
| -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
| -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
GCC_SYSROOT_FLAGS="--sysroot=$TOOLCHAIN_SYSROOT -Wl,-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
LD_SYSROOT_FLAGS="-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
;;
+ musl)
+ GCC_SYSROOT_FLAGS="--sysroot=$TOOLCHAIN_SYSROOT -Wl,-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
+ LD_SYSROOT_FLAGS="-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
+ ;;
*)
GCC_SYSROOT_FLAGS=""
LD_SYSROOT_FLAGS=""
config USE_UCLIBC
bool "Use uClibc"
+ config USE_MUSL
+ bool "Use musl"
+
endchoice
source "toolchain/eglibc/Config.in"
source "toolchain/uClibc/Config.in"
+source "toolchain/musl/Config.in"
comment "Debuggers"
depends TOOLCHAINOPTS
source "toolchain/eglibc/Config.version"
source "toolchain/uClibc/Config.version"
+source "toolchain/musl/Config.version"
config LIBC
string
default "eglibc" if USE_EGLIBC
default "uClibc" if USE_UCLIBC
+ default "musl" if USE_MUSL
config LIBC_VERSION
string
default EGLIBC_VERSION if USE_EGLIBC
default UCLIBC_VERSION if USE_UCLIBC
+ default MUSL_VERSION if USE_MUSL
config TARGET_SUFFIX
string
- default "gnueabi" if (USE_EGLIBC) && (arm || armeb)
- default "gnu" if (USE_EGLIBC) && !(arm || armeb)
+ default "gnueabi" if USE_EGLIBC && (arm || armeb)
+ default "gnu" if USE_EGLIBC && !(arm || armeb)
default "uclibcgnueabi" if USE_UCLIBC && (arm || armeb)
default "uclibc" if USE_UCLIBC && !(arm || armeb)
+ default "muslgnueabi" if USE_MUSL && (arm || armeb)
+ default "musl" if USE_MUSL && !(arm || armeb)
--- /dev/null
+diff --git a/config.sub b/config.sub
+--- a/config.sub
++++ b/config.sub
+@@ -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* | \
+@@ -1335,6 +1336,7 @@
+ | -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* \
config INSTALL_LIBSTDCPP
bool
prompt "Build/install c++ compiler and libstdc++?" if TOOLCHAINOPTS
- default y
+ default y if !USE_MUSL
help
Build/install c++ compiler and libstdc++?
--- /dev/null
+diff --git a/config.sub b/config.sub
+--- a/config.sub
++++ b/config.sub
+@@ -125,6 +125,7 @@ esac
+ 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* | \
+@@ -1310,6 +1311,7 @@ case $os in
+ | -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 --git a/gcc/config.gcc b/gcc/config.gcc
+--- a/gcc/config.gcc
++++ b/gcc/config.gcc
+@@ -478,7 +478,7 @@ 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"
+
+ # Common parts for widely ported systems.
+ case ${target} in
+@@ -591,6 +591,9 @@ 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/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -64,6 +64,10 @@
+ #undef GLIBC_DYNAMIC_LINKER
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
+
++/* musl has no "classic" (i.e. broken) mode */
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.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/i386/linux.h b/gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h
++++ b/gcc/config/i386/linux.h
+@@ -93,6 +93,7 @@ along with GCC; see the file COPYING3. If not see
+ /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
+ #define LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+
+ #undef ASM_SPEC
+ #define ASM_SPEC \
+diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h
++++ b/gcc/config/i386/linux64.h
+@@ -65,6 +65,9 @@ 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 MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++
+ #if TARGET_64BIT_DEFAULT
+ #define SPEC_32 "m32"
+ #define SPEC_64 "!m32"
+diff --git a/gcc/config/linux.h b/gcc/config/linux.h
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -33,10 +33,12 @@ 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)
++#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 LINUX_TARGET_OS_CPP_BUILTINS() \
+@@ -54,18 +56,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ 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 */
+@@ -83,13 +88,13 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+
+ #define LINUX_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+- BIONIC_DYNAMIC_LINKER)
++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define LINUX_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+- BIONIC_DYNAMIC_LINKER32)
++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define LINUX_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+- BIONIC_DYNAMIC_LINKER64)
++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+
+ /* Determine whether the entire c99 runtime
+ is present in the runtime library. */
+diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
+--- a/gcc/config/linux.opt
++++ b/gcc/config/linux.opt
+@@ -30,3 +30,7 @@ Use GNU C library
+ 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 --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h
++++ b/gcc/config/mips/linux.h
+@@ -63,6 +63,8 @@ along with GCC; see the file COPYING3. If not see
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
++
+ /* Borrowed from sparc/linux.h */
+ #undef LINK_SPEC
+ #define LINK_SPEC \
+diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h
++++ b/gcc/ginclude/stddef.h
+@@ -184,6 +184,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
+ #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 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
+ /* __size_t is a typedef on FreeBSD 5!, must not trash it. */
+ #else
+@@ -214,6 +216,7 @@ typedef __SIZE_TYPE__ size_t;
+ 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 --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c
++++ b/libgomp/config/posix/time.c
+@@ -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 --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host
++++ b/libstdc++-v3/configure.host
+@@ -237,6 +237,13 @@ case "${host_os}" in
+ os_include_dir="os/bsd/freebsd"
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++ # check for musl by target
++ case "${host_os}" in
++ *-musl*)
++ os_include_dir="os/generic"
++ ;;
++ *)
++
+ if [ "$uclibc" = "yes" ]; then
+ os_include_dir="os/uclibc"
+ elif [ "$bionic" = "yes" ]; then
+@@ -245,6 +252,9 @@ case "${host_os}" in
+ os_include_dir="os/gnu-linux"
+ fi
+ ;;
++
++ esac
++ ;;
+ hpux*)
+ os_include_dir="os/hpux"
+ ;;
--- /dev/null
+diff --git a/config.sub b/config.sub
+--- a/config.sub
++++ b/config.sub
+@@ -125,6 +125,7 @@ esac
+ 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* | \
+@@ -1310,6 +1311,7 @@ case $os in
+ | -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 --git a/gcc/config.gcc b/gcc/config.gcc
+--- a/gcc/config.gcc
++++ b/gcc/config.gcc
+@@ -478,7 +478,7 @@ 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"
+
+ # Common parts for widely ported systems.
+ case ${target} in
+@@ -591,6 +591,9 @@ 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/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -64,6 +64,10 @@
+ #undef GLIBC_DYNAMIC_LINKER
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
+
++/* musl has no "classic" (i.e. broken) mode */
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.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/i386/linux.h b/gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h
++++ b/gcc/config/i386/linux.h
+@@ -93,6 +93,7 @@ along with GCC; see the file COPYING3. If not see
+ /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
+ #define LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+
+ #undef ASM_SPEC
+ #define ASM_SPEC \
+diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h
++++ b/gcc/config/i386/linux64.h
+@@ -65,6 +65,9 @@ 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 MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++
+ #if TARGET_64BIT_DEFAULT
+ #define SPEC_32 "m32"
+ #define SPEC_64 "!m32"
+diff --git a/gcc/config/linux.h b/gcc/config/linux.h
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -33,10 +33,12 @@ 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)
++#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 LINUX_TARGET_OS_CPP_BUILTINS() \
+@@ -54,18 +56,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ 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 */
+@@ -83,13 +88,13 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+
+ #define LINUX_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+- BIONIC_DYNAMIC_LINKER)
++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define LINUX_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+- BIONIC_DYNAMIC_LINKER32)
++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define LINUX_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+- BIONIC_DYNAMIC_LINKER64)
++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+
+ /* Determine whether the entire c99 runtime
+ is present in the runtime library. */
+diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
+--- a/gcc/config/linux.opt
++++ b/gcc/config/linux.opt
+@@ -30,3 +30,7 @@ Use GNU C library
+ 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 --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h
++++ b/gcc/config/mips/linux.h
+@@ -63,6 +63,8 @@ along with GCC; see the file COPYING3. If not see
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
++
+ /* Borrowed from sparc/linux.h */
+ #undef LINK_SPEC
+ #define LINK_SPEC \
+diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h
++++ b/gcc/ginclude/stddef.h
+@@ -184,6 +184,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
+ #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 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
+ /* __size_t is a typedef on FreeBSD 5!, must not trash it. */
+ #else
+@@ -214,6 +216,7 @@ typedef __SIZE_TYPE__ size_t;
+ 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 --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c
++++ b/libgomp/config/posix/time.c
+@@ -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 --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host
++++ b/libstdc++-v3/configure.host
+@@ -237,6 +237,13 @@ case "${host_os}" in
+ os_include_dir="os/bsd/freebsd"
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++ # check for musl by target
++ case "${host_os}" in
++ *-musl*)
++ os_include_dir="os/generic"
++ ;;
++ *)
++
+ if [ "$uclibc" = "yes" ]; then
+ os_include_dir="os/uclibc"
+ elif [ "$bionic" = "yes" ]; then
+@@ -245,6 +252,9 @@ case "${host_os}" in
+ os_include_dir="os/gnu-linux"
+ fi
+ ;;
++
++ esac
++ ;;
+ hpux*)
+ os_include_dir="os/hpux"
+ ;;
--- /dev/null
+diff --git a/config.sub b/config.sub
+--- a/config.sub
++++ b/config.sub
+@@ -125,6 +125,7 @@ esac
+ 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* | \
+@@ -1310,6 +1311,7 @@ case $os in
+ | -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 --git a/gcc/config.gcc b/gcc/config.gcc
+--- a/gcc/config.gcc
++++ b/gcc/config.gcc
+@@ -478,7 +478,7 @@ 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"
+
+ # Common parts for widely ported systems.
+ case ${target} in
+@@ -591,6 +591,9 @@ 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/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -64,6 +64,10 @@
+ #undef GLIBC_DYNAMIC_LINKER
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
+
++/* musl has no "classic" (i.e. broken) mode */
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.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/i386/linux.h b/gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h
++++ b/gcc/config/i386/linux.h
+@@ -93,6 +93,7 @@ along with GCC; see the file COPYING3. If not see
+ /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
+ #define LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+
+ #undef ASM_SPEC
+ #define ASM_SPEC \
+diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h
++++ b/gcc/config/i386/linux64.h
+@@ -65,6 +65,9 @@ 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 MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++
+ #if TARGET_64BIT_DEFAULT
+ #define SPEC_32 "m32"
+ #define SPEC_64 "!m32"
+diff --git a/gcc/config/linux.h b/gcc/config/linux.h
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -33,10 +33,12 @@ 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)
++#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 LINUX_TARGET_OS_CPP_BUILTINS() \
+@@ -54,18 +56,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ 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 */
+@@ -83,13 +88,13 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+
+ #define LINUX_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+- BIONIC_DYNAMIC_LINKER)
++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define LINUX_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+- BIONIC_DYNAMIC_LINKER32)
++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define LINUX_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+- BIONIC_DYNAMIC_LINKER64)
++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+
+ /* Determine whether the entire c99 runtime
+ is present in the runtime library. */
+diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
+--- a/gcc/config/linux.opt
++++ b/gcc/config/linux.opt
+@@ -30,3 +30,7 @@ Use GNU C library
+ 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 --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h
++++ b/gcc/config/mips/linux.h
+@@ -63,6 +63,8 @@ along with GCC; see the file COPYING3. If not see
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
++
+ /* Borrowed from sparc/linux.h */
+ #undef LINK_SPEC
+ #define LINK_SPEC \
+diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h
++++ b/gcc/ginclude/stddef.h
+@@ -184,6 +184,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
+ #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 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
+ /* __size_t is a typedef on FreeBSD 5!, must not trash it. */
+ #else
+@@ -214,6 +216,7 @@ typedef __SIZE_TYPE__ size_t;
+ 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 --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c
++++ b/libgomp/config/posix/time.c
+@@ -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 --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host
++++ b/libstdc++-v3/configure.host
+@@ -237,6 +237,13 @@ case "${host_os}" in
+ os_include_dir="os/bsd/freebsd"
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++ # check for musl by target
++ case "${host_os}" in
++ *-musl*)
++ os_include_dir="os/generic"
++ ;;
++ *)
++
+ if [ "$uclibc" = "yes" ]; then
+ os_include_dir="os/uclibc"
+ elif [ "$bionic" = "yes" ]; then
+@@ -245,6 +252,9 @@ case "${host_os}" in
+ os_include_dir="os/gnu-linux"
+ fi
+ ;;
++
++ esac
++ ;;
+ hpux*)
+ os_include_dir="os/hpux"
+ ;;
--- /dev/null
+diff --git a/gcc/config.gcc b/gcc/config.gcc
+--- a/gcc/config.gcc
++++ b/gcc/config.gcc
+@@ -522,7 +522,7 @@
+ esac
+
+ # Common C libraries.
+-tm_defines="$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"
+ ;;
+@@ -1722,6 +1725,7 @@
+ tm_file="${tm_file} dbxelf.h gnu-user.h linux.h microblaze/linux.h"
+ c_target_objs="${c_target_objs} microblaze-c.o"
+ cxx_target_objs="${cxx_target_objs} microblaze-c.o"
++ tmake_file="${tmake_file} microblaze/t-microblaze"
+ ;;
+ microblaze*-*-*)
+ tm_file="${tm_file} dbxelf.h"
+diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -64,6 +64,10 @@
+ #undef GLIBC_DYNAMIC_LINKER
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
+
++/* musl has no "classic" (i.e. broken) mode */
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.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/i386/linux.h b/gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h
++++ b/gcc/config/i386/linux.h
+@@ -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 --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h
++++ b/gcc/config/i386/linux64.h
+@@ -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 --git a/gcc/config/linux.h b/gcc/config/linux.h
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -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 */
+@@ -85,16 +90,16 @@
+
+ #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. */
+diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
+--- a/gcc/config/linux.opt
++++ b/gcc/config/linux.opt
+@@ -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 --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h
++++ b/gcc/config/mips/linux.h
+@@ -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 --git a/gcc/config/rs6000/linux64.h b/gcc/config/rs6000/linux64.h
+--- a/gcc/config/rs6000/linux64.h
++++ b/gcc/config/rs6000/linux64.h
+@@ -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 --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
+--- a/gcc/config/rs6000/sysv4.h
++++ b/gcc/config/rs6000/sysv4.h
+@@ -804,15 +804,18 @@
+
+ #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 --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h
++++ b/gcc/ginclude/stddef.h
+@@ -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 --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c
++++ b/libgomp/config/posix/time.c
+@@ -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 --git a/libitm/config/arm/hwcap.cc b/libitm/config/arm/hwcap.cc
+--- a/libitm/config/arm/hwcap.cc
++++ b/libitm/config/arm/hwcap.cc
+@@ -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 --git a/libitm/config/linux/x86/tls.h b/libitm/config/linux/x86/tls.h
+--- 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 @@
+
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+
+ #endif // LIBITM_X86_TLS_H
+diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host
++++ b/libstdc++-v3/configure.host
+@@ -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"
+ ;;
--- /dev/null
+diff --git a/config.sub b/config.sub
+--- a/config.sub
++++ b/config.sub
+@@ -125,6 +125,7 @@
+ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+ case $maybe_os in
+ nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
++ linux-musl* | \
+ linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+ knetbsd*-gnu* | netbsd*-gnu* | \
+ kopensolaris*-gnu* | \
+@@ -1346,6 +1347,7 @@
+ | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+ | -mingw32* | -linux-gnu* | -linux-android* \
+ | -linux-newlib* | -linux-uclibc* \
++ | -linux-musl* \
+ | -uxpv* | -beos* | -mpeix* | -udk* \
+ | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+ | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+diff --git a/gcc/config.gcc b/gcc/config.gcc
+--- a/gcc/config.gcc
++++ b/gcc/config.gcc
+@@ -522,7 +522,7 @@
+ esac
+
+ # Common C libraries.
+-tm_defines="$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"
+ ;;
+@@ -1722,6 +1725,7 @@
+ tm_file="${tm_file} dbxelf.h gnu-user.h linux.h microblaze/linux.h"
+ c_target_objs="${c_target_objs} microblaze-c.o"
+ cxx_target_objs="${cxx_target_objs} microblaze-c.o"
++ tmake_file="${tmake_file} microblaze/t-microblaze"
+ ;;
+ microblaze*-*-*)
+ tm_file="${tm_file} dbxelf.h"
+diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -64,6 +64,10 @@
+ #undef GLIBC_DYNAMIC_LINKER
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
+
++/* musl has no "classic" (i.e. broken) mode */
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.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/i386/linux.h b/gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h
++++ b/gcc/config/i386/linux.h
+@@ -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 --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h
++++ b/gcc/config/i386/linux64.h
+@@ -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 --git a/gcc/config/linux.h b/gcc/config/linux.h
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -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 */
+@@ -85,16 +90,16 @@
+
+ #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. */
+diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
+--- a/gcc/config/linux.opt
++++ b/gcc/config/linux.opt
+@@ -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 --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h
++++ b/gcc/config/mips/linux.h
+@@ -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 --git a/gcc/config/rs6000/linux64.h b/gcc/config/rs6000/linux64.h
+--- a/gcc/config/rs6000/linux64.h
++++ b/gcc/config/rs6000/linux64.h
+@@ -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 --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
+--- a/gcc/config/rs6000/sysv4.h
++++ b/gcc/config/rs6000/sysv4.h
+@@ -804,15 +804,18 @@
+
+ #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 --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h
++++ b/gcc/ginclude/stddef.h
+@@ -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 --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c
++++ b/libgomp/config/posix/time.c
+@@ -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 --git a/libitm/config/arm/hwcap.cc b/libitm/config/arm/hwcap.cc
+--- a/libitm/config/arm/hwcap.cc
++++ b/libitm/config/arm/hwcap.cc
+@@ -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 --git a/libitm/config/linux/x86/tls.h b/libitm/config/linux/x86/tls.h
+--- 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 @@
+
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+
+ #endif // LIBITM_X86_TLS_H
+diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host
++++ b/libstdc++-v3/configure.host
+@@ -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"
+ ;;
--- /dev/null
+diff -urN gdb-linaro-7.5-2012.09/config.sub gdb-linaro-7.5-2012.09.new/config.sub
+--- gdb-linaro-7.5-2012.09/config.sub 2012-09-13 16:01:23.000000000 +0200
++++ gdb-linaro-7.5-2012.09.new/config.sub 2012-11-21 18:19:43.516916352 +0100
+@@ -126,7 +126,8 @@
+ linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+ knetbsd*-gnu* | netbsd*-gnu* | \
+ kopensolaris*-gnu* | \
+- storm-chaos* | os2-emx* | rtmk-nova*)
++ storm-chaos* | os2-emx* | rtmk-nova* | \
++ linux-musl*)
+ os=-$maybe_os
+ basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+ ;;
+@@ -1360,7 +1361,7 @@
+ | -chorusos* | -chorusrdb* | -cegcc* \
+ | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+ | -mingw32* | -linux-gnu* | -linux-android* \
+- | -linux-newlib* | -linux-uclibc* \
++ | -linux-newlib* | -linux-uclibc* | -linux-musl* \
+ | -uxpv* | -beos* | -mpeix* | -udk* \
+ | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+ | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
--- /dev/null
+# Choose musl version.
+
+choice
+ prompt "musl Version"
+ depends on TOOLCHAINOPTS && USE_MUSL
+ default UCLIBC_VERSION_0_9_7
+ help
+ Select the version of musl you wish to use.
+
+ config MUSL_VERSION_0_9_7
+ bool "musl 0.9.7"
+
+endchoice
+
+
+# Debug version.
+
+config MUSL_ENABLE_DEBUG
+ bool "Build with debug information"
+ depends on TOOLCHAINOPTS && USE_MUSL
+ default n
--- /dev/null
+config MUSL_VERSION
+ string
+ depends on USE_MUSL
+ default "0.9.7" if MUSL_VERSION_0_9_7
+ default "0.9.7"
+
+if !TOOLCHAINOPTS
+
+ config MUSL_VERSION_0_9_7
+ default y if USE_MUSL
+ bool
+
+endif
--- /dev/null
+PATH_PREFIX=.
+
+include ./common.mk
+
+HOST_STAMP_BUILT:=$(HOST_BUILD_DIR)/.built
+HOST_STAMP_INSTALLED:=$(TOOLCHAIN_DIR)/stamp/.musl_installed
+
+HOST_BUILD_PARALLEL:=1
+
+define Host/SetToolchainInfo
+ $(SED) 's,^\(LIBC_TYPE\)=.*,\1=$(PKG_NAME),' $(TOOLCHAIN_DIR)/info.mk
+ $(SED) 's,^\(LIBC_URL\)=.*,\1=http://www.musl-libc.org/,' $(TOOLCHAIN_DIR)/info.mk
+ $(SED) 's,^\(LIBC_VERSION\)=.*,\1=$(PKG_VERSION),' $(TOOLCHAIN_DIR)/info.mk
+ $(SED) 's,^\(LIBC_SO_VERSION\)=.*,\1=$(LIBC_SO_VERSION),' $(TOOLCHAIN_DIR)/info.mk
+endef
+
+define Host/Compile
+ $(MAKE) $(HOST_JOBS) -C $(HOST_BUILD_DIR) all
+endef
+
+define Host/Install
+ $(call Host/SetToolchainInfo)
+ $(MAKE) -C $(HOST_BUILD_DIR) DESTDIR="$(TOOLCHAIN_DIR)/" install
+ ( cd $(TOOLCHAIN_DIR) ; \
+ for d in lib usr/lib ; do \
+ for f in libc.so libpthread.so libgcc_s.so ; do \
+ if [ -f $$$$d/$$$$f -a ! -L $$$$d/$$$$f ] ; then \
+ $(SED) 's,/usr/lib/,,g;s,/lib/,,g' $$$$d/$$$$f ; \
+ fi \
+ done \
+ done \
+ )
+ rm -f \
+ $(TOOLCHAIN_DIR)/lib/libresolv*.so* \
+ $(TOOLCHAIN_DIR)/lib/libnsl*.so*
+endef
+
+$(eval $(call HostBuild))
--- /dev/null
+#
+# Copyright (C) 2012 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/target.mk
+
+PKG_NAME:=musl
+PKG_VERSION:=$(call qstrip,$(CONFIG_MUSL_VERSION))
+PKG_RELEASE=$(PKG_SOURCE_VERSION)
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=git://git.musl-libc.org/musl
+PKG_SOURCE_SUBDIR=$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE_VERSION:=2df4f6f17b1f14684cb991c53c9ef0ddaa8c7bad
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
+LIBC_SO_VERSION:=$(PKG_VERSION)
+PATCH_DIR:=$(PATH_PREFIX)/patches-$(PKG_VERSION)
+CONFIG_DIR:=$(PATH_PREFIX)/config-$(PKG_VERSION)
+
+HOST_BUILD_DIR:=$(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)-$(PKG_VERSION)
+
+include $(INCLUDE_DIR)/toolchain-build.mk
+
+MUSL_CONFIGURE:= \
+ $(TARGET_CONFIGURE_OPTS) \
+ CFLAGS="$(TARGET_CFLAGS)" \
+ CROSS_COMPILE="$(TARGET_CROSS)" \
+ $(HOST_BUILD_DIR)/configure \
+ --prefix=/ \
+ --host=$(GNU_HOST_NAME) \
+ --target=$(REAL_GNU_TARGET_NAME) \
+ --disable-gcc-wrapper
+
+ifeq ($(CONFIG_MUSL_ENABLE_DEBUG),y)
+MUSL_CONFIGURE+= \
+ --enable-debug
+endif
+
+define Host/Prepare
+ $(call Host/Prepare/Default)
+ $(if $(strip $(QUILT)), \
+ cd $(HOST_BUILD_DIR); \
+ if $(QUILT_CMD) next >/dev/null 2>&1; then \
+ $(QUILT_CMD) push -a; \
+ fi
+ )
+ ln -snf $(PKG_NAME)-$(PKG_VERSION) $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
+endef
+
+define Host/Configure
+ ( cd $(HOST_BUILD_DIR); rm -f config.cache; \
+ $(MUSL_CONFIGURE) \
+ );
+endef
+
+
+define Host/Clean
+ rm -rf \
+ $(HOST_BUILD_DIR) \
+ $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME) \
+ $(BUILD_DIR_TOOLCHAIN)/$(LIBC)-dev
+endef
--- /dev/null
+PATH_PREFIX:=..
+
+include ../common.mk
+
+HOST_STAMP_BUILT:=$(HOST_BUILD_DIR)/.headers_built
+HOST_STAMP_INSTALLED:=$(TOOLCHAIN_DIR)/stamp/.uclibc_headers_installed
+
+define Host/Compile
+
+endef
+
+define Host/Install
+endef
+
+$(eval $(call HostBuild))
+
--- /dev/null
+Date: Sat, 20 Oct 2012 22:15:44 +0200
+From: Abdoulaye Walsimou Gaye <awg@...toolkit.org>
+To: musl@...ts.openwall.com
+Cc: Abdoulaye Walsimou Gaye <awg@...toolkit.org>
+Subject: [PATCH 3/4] Import BSD functions defined in <netinet/ether.h> from NetBSD
+
+Signed-off-by: Abdoulaye Walsimou Gaye <awg@...toolkit.org>
+---
+ include/netinet/ether.h | 14 ++++
+ src/network/ethers.c | 180 +++++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 194 insertions(+)
+ create mode 100644 include/netinet/ether.h
+ create mode 100644 src/network/ethers.c
+
+diff --git a/include/netinet/ether.h b/include/netinet/ether.h
+new file mode 100644
+index 0000000..44c614e
+--- /dev/null
++++ b/include/netinet/ether.h
+@@ -0,0 +1,10 @@
++#ifndef _NETINET_ETHER_H
++#define _NETINET_ETHER_H
++
++char *ether_ntoa(const struct ether_addr *);
++struct ether_addr *ether_aton(const char *);
++int ether_ntohost(char *, const struct ether_addr *);
++int ether_hostton(const char *, struct ether_addr *);
++int ether_line(const char *, struct ether_addr *, char *);
++
++#endif /* !_NETINET_ETHER_H */
+diff --git a/src/network/ethers.c b/src/network/ethers.c
+new file mode 100644
+index 0000000..8014581
+--- /dev/null
++++ b/src/network/ethers.c
+@@ -0,0 +1,180 @@
++/* Origin NetBSD: src/lib/libc/net/ethers.c */
++
++/*
++ * ethers(3N) a la Sun.
++ *
++ * Written by Roland McGrath <roland@...b.com> 10/14/93.
++ * Public domain.
++ *
++ * port for musl by Abdoulaye Walsimou GAYE <awg@...toolkit.org> 2012/10/15
++ */
++
++#define _BSD_SOURCE
++#include <net/ethernet.h>
++#include <netinet/ether.h>
++
++#include <sys/param.h>
++#include <assert.h>
++#include <errno.h>
++#include <paths.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++
++#ifndef _PATH_ETHERS
++#define _PATH_ETHERS "/etc/ethers"
++#endif
++
++/*
++ * ether_ntoa():
++ * This function converts this structure into an ASCII string of the form
++ * ``xx:xx:xx:xx:xx:xx'', consisting of 6 hexadecimal numbers separated
++ * by colons. It returns a pointer to a static buffer that is reused for
++ * each call.
++ */
++char *ether_ntoa(const struct ether_addr *e)
++{
++ static char a[18];
++
++ assert(e != NULL);
++
++ (void) snprintf(a, sizeof a, "%02x:%02x:%02x:%02x:%02x:%02x",
++ e->ether_addr_octet[0], e->ether_addr_octet[1],
++ e->ether_addr_octet[2], e->ether_addr_octet[3],
++ e->ether_addr_octet[4], e->ether_addr_octet[5]);
++ return a;
++}
++
++/*
++ * ether_aton():
++ * This function converts an ASCII string of the same form and to a structure
++ * containing the 6 octets of the address. It returns a pointer to a
++ * static structure that is reused for each call.
++ */
++struct ether_addr *ether_aton(const char *s)
++{
++ static struct ether_addr n;
++ unsigned int i[6];
++
++ assert(s != NULL);
++
++ if (sscanf(s, " %x:%x:%x:%x:%x:%x ", &i[0], &i[1],
++ &i[2], &i[3], &i[4], &i[5]) == 6) {
++ n.ether_addr_octet[0] = (unsigned char)i[0];
++ n.ether_addr_octet[1] = (unsigned char)i[1];
++ n.ether_addr_octet[2] = (unsigned char)i[2];
++ n.ether_addr_octet[3] = (unsigned char)i[3];
++ n.ether_addr_octet[4] = (unsigned char)i[4];
++ n.ether_addr_octet[5] = (unsigned char)i[5];
++ return &n;
++ }
++ return NULL;
++}
++
++/*
++ * ether_ntohost():
++ * This function interrogates the data base mapping host names to Ethernet
++ * addresses, /etc/ethers.
++ * It looks up the given Ethernet address and writes the associated host name
++ * into the character buffer passed.
++ * It returns zero if it finds the requested host name and -1 if not.
++ */
++int ether_ntohost(char *hostname, const struct ether_addr *e)
++{
++ FILE *f;
++ char *p;
++ size_t len;
++ struct ether_addr try;
++
++ assert(hostname != NULL);
++ assert(e != NULL);
++
++ f = fopen(_PATH_ETHERS, "r");
++ if (f == NULL)
++ return -1;
++ while ((p = fgetln(f, &len)) != NULL) {
++ if (p[len - 1] != '\n')
++ continue; /* skip lines w/o \n */
++ p[--len] = '\0';
++ if (ether_line(p, &try, hostname) == 0 &&
++ memcmp(&try, e, sizeof try) == 0) {
++ (void)fclose(f);
++ return 0;
++ }
++ }
++ (void)fclose(f);
++ errno = ENOENT;
++ return -1;
++}
++
++/*
++ * ether_hostton():
++ * This function interrogates the data base mapping host names to Ethernet
++ * addresses, /etc/ethers.
++ * It looks up the given host name and writes the associated Ethernet address
++ * into the structure passed.
++ * It returns zero if it finds the requested address and -1 if not.
++ */
++int ether_hostton(const char *hostname, struct ether_addr *e)
++{
++ FILE *f;
++ char *p;
++ size_t len;
++ char try[MAXHOSTNAMELEN + 1];
++
++ assert(hostname != NULL);
++ assert(e != NULL);
++
++ f = fopen(_PATH_ETHERS, "r");
++ if (f==NULL)
++ return -1;
++
++ while ((p = fgetln(f, &len)) != NULL) {
++ if (p[len - 1] != '\n')
++ continue; /* skip lines w/o \n */
++ p[--len] = '\0';
++ if (ether_line(p, e, try) == 0 && strcmp(hostname, try) == 0) {
++ (void)fclose(f);
++ return 0;
++ }
++ }
++ (void)fclose(f);
++ errno = ENOENT;
++ return -1;
++}
++
++/*
++ * ether_line():
++ * This function parses a line from the /etc/ethers file and fills in the passed
++ * ``struct ether_addr'' and character buffer with the Ethernet address and host
++ * name on the line.
++ * It returns zero if the line was successfully parsed and -1 if not.
++ */
++int ether_line(const char *l, struct ether_addr *e, char *hostname)
++{
++ unsigned int i[6];
++
++#define S2(arg) #arg
++#define S1(arg) S2(arg)
++ static const char fmt[] = " %x:%x:%x:%x:%x:%x"
++ " %" S1(MAXHOSTNAMELEN) "s\n";
++#undef S2
++#undef S1
++
++ assert(l != NULL);
++ assert(e != NULL);
++ assert(hostname != NULL);
++
++ if (sscanf(l, fmt,
++ &i[0], &i[1], &i[2], &i[3], &i[4], &i[5], hostname) == 7) {
++ e->ether_addr_octet[0] = (unsigned char)i[0];
++ e->ether_addr_octet[1] = (unsigned char)i[1];
++ e->ether_addr_octet[2] = (unsigned char)i[2];
++ e->ether_addr_octet[3] = (unsigned char)i[3];
++ e->ether_addr_octet[4] = (unsigned char)i[4];
++ e->ether_addr_octet[5] = (unsigned char)i[5];
++ return 0;
++ }
++ errno = EINVAL;
++ return -1;
++}
+--
+1.7.9.5
+
projects / openwrt.git / commitdiff