diff --git a/toolchain/Config.in b/toolchain/Config.in
index 0f9a7dd9a4..3980d790a4 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -15,6 +15,15 @@ config BR2_TOOLCHAIN_USES_GLIBC
 config BR2_TOOLCHAIN_USES_UCLIBC
 	bool
 
+config BR2_TOOLCHAIN_USES_MUSL
+	bool
+	select BR2_LARGEFILE
+	select BR2_INET_IPV6
+	select BR2_USE_WCHAR
+	select BR2_ENABLE_LOCALE
+	select BR2_TOOLCHAIN_HAS_THREADS
+	select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
+
 choice
 	prompt "Toolchain type"
 	help
diff --git a/toolchain/helpers.mk b/toolchain/helpers.mk
index a4a13c7327..b6fe04c417 100644
--- a/toolchain/helpers.mk
+++ b/toolchain/helpers.mk
@@ -208,6 +208,17 @@ check_glibc = \
 	$(call check_glibc_feature,BR2_USE_MMU,MMU support) ;\
 	$(call check_glibc_rpc_feature,$${SYSROOT_DIR})
 
+#
+# Check that the selected C library really is musl
+#
+# $1: sysroot directory
+check_musl = \
+	SYSROOT_DIR="$(strip $1)"; \
+	if test ! -f $${SYSROOT_DIR}/lib/libc.so -o -e $${SYSROOT_DIR}/lib/libm.so ; then \
+		echo "Incorrect selection of the C library" ; \
+		exit -1; \
+	fi
+
 #
 # Check the conformity of Buildroot configuration with regard to the
 # uClibc configuration of the external toolchain, for a particular
diff --git a/toolchain/toolchain-external/Config.in b/toolchain/toolchain-external/Config.in
index c53577ef60..89c799e3d5 100644
--- a/toolchain/toolchain-external/Config.in
+++ b/toolchain/toolchain-external/Config.in
@@ -860,6 +860,10 @@ config BR2_TOOLCHAIN_EXTERNAL_UCLIBC
 	bool
 	select BR2_TOOLCHAIN_USES_UCLIBC
 
+config BR2_TOOLCHAIN_EXTERNAL_MUSL
+	bool
+	select BR2_TOOLCHAIN_USES_MUSL
+
 if BR2_TOOLCHAIN_EXTERNAL_CUSTOM
 
 choice
@@ -882,6 +886,13 @@ config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC
 	  eglibc configured to exclude key features may cause build failures to
 	  some packages.
 
+config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL
+	bool "musl"
+	select BR2_TOOLCHAIN_EXTERNAL_MUSL
+	help
+	  Select this option if your external toolchain uses the
+	  'musl' C library, available from http://www.musl-libc.org/.
+
 endchoice
 
 if BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
@@ -952,6 +963,7 @@ endif # BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
 config BR2_TOOLCHAIN_EXTERNAL_INET_RPC
 	bool "Toolchain has RPC support?"
 	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	depends on !BR2_TOOLCHAIN_EXTERNAL_MUSL
 	default y if BR2_TOOLCHAIN_EXTERNAL_GLIBC
 	help
 	  Select this option if your external toolchain supports
diff --git a/toolchain/toolchain-external/toolchain-external.mk b/toolchain/toolchain-external/toolchain-external.mk
index 2bfe64a888..b2266b6ac0 100644
--- a/toolchain/toolchain-external/toolchain-external.mk
+++ b/toolchain/toolchain-external/toolchain-external.mk
@@ -68,6 +68,10 @@ ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC),y)
 LIB_EXTERNAL_LIBS+=libnss_files.so.* libnss_dns.so.*
 endif
 
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_MUSL),y)
+LIB_EXTERNAL_LIBS += libc.so libgcc_s.so.*
+endif
+
 ifeq ($(BR2_INSTALL_LIBSTDCPP),y)
 USR_LIB_EXTERNAL_LIBS+=libstdc++.so.*
 endif
@@ -353,7 +357,7 @@ endif
 define TOOLCHAIN_EXTERNAL_CONFIGURE_CMDS
 	$(Q)$(call check_cross_compiler_exists,$(TOOLCHAIN_EXTERNAL_CC))
 	$(Q)LIBC_A_LOCATION=`readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) -print-file-name=libc.a)` ; \
-	SYSROOT_DIR=`echo $${LIBC_A_LOCATION} | sed -r -e 's:usr/lib(32|64)?/(.*/)?libc\.a::'` ; \
+	SYSROOT_DIR=`echo $${LIBC_A_LOCATION} | sed -r -e 's:(usr/)?lib(32|64)?/(.*/)?libc\.a::'` ; \
 	if test -z "$${SYSROOT_DIR}" ; then \
 		@echo "External toolchain doesn't support --sysroot. Cannot use." ; \
 		exit 1 ; \
@@ -368,11 +372,23 @@ define TOOLCHAIN_EXTERNAL_CONFIGURE_CMDS
 	fi ; \
 	if test "$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC)" = "y" ; then \
 		$(call check_uclibc,$${SYSROOT_DIR}) ; \
+	elif test "$(BR2_TOOLCHAIN_EXTERNAL_MUSL)" = "y" ; then \
+		$(call check_musl,$${SYSROOT_DIR}) ; \
 	else \
 		$(call check_glibc,$${SYSROOT_DIR}) ; \
 	fi
 endef
 
+# With the musl C library, the libc.so library directly plays the role
+# of the dynamic library loader. We just need to create a symbolic
+# link to libc.so with the appropriate name.
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_MUSL),y)
+define TOOLCHAIN_EXTERNAL_MUSL_LD_LINK
+	ln -sf libc.so $(TARGET_DIR)/lib/ld-musl-$(ARCH).so.1
+endef
+TOOLCHAIN_EXTERNAL_POST_INSTALL_STAGING_HOOKS += TOOLCHAIN_EXTERNAL_MUSL_LD_LINK
+endif
+
 # Integration of the toolchain into Buildroot: find the main sysroot
 # and the variant-specific sysroot, then copy the needed libraries to
 # the $(TARGET_DIR) and copy the whole sysroot (libraries and headers)