diff --git a/package/gcc/Config.in.host b/package/gcc/Config.in.host
index 2b54959d0e..4d02931518 100644
--- a/package/gcc/Config.in.host
+++ b/package/gcc/Config.in.host
@@ -30,6 +30,8 @@ choice
 		depends on !BR2_x86_jaguar && !BR2_x86_steamroller
 		# Unsupported for MIPS R6
 		depends on !BR2_mips_32r6 && !BR2_mips_64r6
+		# musl ppc64 unsupported
+		depends on !BR2_powerpc64 && !BR2_powerpc64le && BR2_TOOLCHAIN_USES_MUSL
 		select BR2_GCC_NEEDS_MPC
 		select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 
@@ -46,6 +48,8 @@ choice
 		depends on !((BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el) && BR2_BINUTILS_VERSION_2_25_X)
 		# Unsupported for MIPS R6
 		depends on !BR2_mips_32r6 && !BR2_mips_64r6
+		# musl ppc64 unsupported
+		depends on !BR2_powerpc64 && !BR2_powerpc64le && BR2_TOOLCHAIN_USES_MUSL
 		select BR2_GCC_NEEDS_MPC
 		select BR2_GCC_SUPPORTS_GRAPHITE
 		select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
@@ -66,6 +70,8 @@ choice
 		depends on !BR2_cortex_a17
 		# Unsupported for MIPS R6
 		depends on !BR2_mips_32r6 && !BR2_mips_64r6
+		# musl ppc64 unsupported
+		depends on !BR2_powerpc64 && !BR2_powerpc64le && BR2_TOOLCHAIN_USES_MUSL
 		# PR60102 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60102
 		select BR2_GCC_NEEDS_MPC
 		select BR2_GCC_SUPPORTS_GRAPHITE
@@ -75,6 +81,8 @@ choice
 		bool "gcc 5.x"
 		# Broken or unsupported architectures
 		depends on !BR2_arc && !BR2_bfin
+		# musl ppc64 unsupported
+		depends on !BR2_powerpc64 && !BR2_powerpc64le && BR2_TOOLCHAIN_USES_MUSL
 		select BR2_GCC_NEEDS_MPC
 		select BR2_GCC_SUPPORTS_GRAPHITE
 		select BR2_TOOLCHAIN_GCC_AT_LEAST_5
diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk
index 032015c628..39c3eebd21 100644
--- a/package/gcc/gcc.mk
+++ b/package/gcc/gcc.mk
@@ -231,6 +231,16 @@ HOST_GCC_COMMON_CONF_OPTS += \
 	--with-long-double-128
 endif
 
+# PowerPC64 big endian by default uses the elfv1 ABI, and PowerPC 64
+# little endian by default uses the elfv2 ABI. However, musl has
+# decided to use the elfv2 ABI for both, so we force the elfv2 ABI for
+# Power64 big endian when the selected C library is musl.
+ifeq ($(BR2_TOOLCHAIN_USES_MUSL)$(BR2_powerpc64),yy)
+HOST_GCC_COMMON_CONF_OPTS += \
+	--with-abi=elfv2 \
+	--without-long-double-128
+endif
+
 HOST_GCC_COMMON_TOOLCHAIN_WRAPPER_ARGS += -DBR_CROSS_PATH_SUFFIX='".br_real"'
 ifeq ($(BR2_GCC_ARCH_HAS_CONFIGURABLE_DEFAULTS),)
 ifeq ($(call qstrip,$(BR2_GCC_TARGET_CPU_REVISION)),)
diff --git a/toolchain/toolchain-buildroot/Config.in b/toolchain/toolchain-buildroot/Config.in
index 0b97bbf6aa..78cac14d14 100644
--- a/toolchain/toolchain-buildroot/Config.in
+++ b/toolchain/toolchain-buildroot/Config.in
@@ -70,7 +70,7 @@ config BR2_TOOLCHAIN_BUILDROOT_MUSL
 	bool "musl"
 	depends on BR2_aarch64 || BR2_arm || BR2_armeb || BR2_i386 || \
 		BR2_microblaze || BR2_mips || BR2_mipsel || BR2_powerpc || \
-		BR2_sh || BR2_x86_64
+		BR2_powerpc64  || BR2_powerpc64le || BR2_sh || BR2_x86_64
 	depends on !BR2_powerpc_SPE # not supported, build breaks
 	# Unsupported for MIPS R6
 	depends on !BR2_mips_32r6 && !BR2_mips_64r6