add cleansystem target, filter fstack-protector-all for musl

Makefile

@@ -33,6 +33,7 @@ help:
 	@echo 'Cleaning targets:'
 	@echo '  clean        - Remove firmware and build directories'
 	@echo '  cleandir     - Same as "clean", but also remove all built toolchains'
+	@echo '  cleansystem  - Same as "cleandir", but only remove active system'
 	@echo '  cleankernel  - Remove kernel dir, useful if you changed any kernel patches'
 	@echo '  distclean    - Same as "cleandir", but also remove downloaded'
 	@echo '                 distfiles and .config'
@@ -98,6 +99,10 @@ cleandir dirclean: .prereq_done
 	-@${GMAKE_INV} cleandir
 	@-rm -f make.log .prereq_done
 
+cleansystem: .prereq_done
+	-@${GMAKE_INV} cleansystem
+	@-rm -f make.log .prereq_done
+
 distclean cleandist:
 	-@${GMAKE_INV} distclean
 	@-rm -f make.log .prereq_done

mk/build.mk

@@ -153,7 +153,7 @@ ${TOPDIR}/package/Depends.mk: ${TOPDIR}/.config $(wildcard ${TOPDIR}/package/*/M
 	$(TOPDIR)/adk/tools/depmaker > ${TOPDIR}/package/Depends.mk
 
 .NOTPARALLEL:
-.PHONY: all world clean cleandir cleantoolchain distclean image_clean
+.PHONY: all world clean cleandir cleansystem distclean image_clean
 
 world:
 	@mkdir -p $(DL_DIR) $(HOST_BUILD_DIR) $(BUILD_DIR) $(TARGET_DIR) $(FW_DIR) \
@@ -257,6 +257,14 @@ cleandir:
 	@rm -rf $(STAGING_TARGET_DIR_PFX) $(STAGING_PKG_DIR_PFX)
 	@rm -f .menu .tmpconfig.h .rebuild* ${TOPDIR}/package/Depends.mk ${TOPDIR}/prereq.mk
 
+cleansystem:
+	@$(TRACE) cleansystem
+	@$(MAKE) -C $(CONFIG) clean $(MAKE_TRACE) 
+	@rm -rf $(BUILD_DIR) $(FW_DIR) $(TARGET_DIR) \
+	    ${TOPDIR}/package/pkglist.d ${TOPDIR}/package/pkgconfigs.d
+	@rm -rf $(TOOLCHAIN_DIR) $(STAGING_TARGET_DIR) $(STAGING_PKG_DIR) $(TOOLCHAIN_BUILD_DIR)
+	@rm -f .menu .tmpconfig.h .rebuild* ${TOPDIR}/package/Depends.mk ${TOPDIR}/prereq.mk
+
 distclean:
 	@$(TRACE) distclean
 	@$(MAKE) -C $(CONFIG) clean $(MAKE_TRACE)

toolchain/gcc/Makefile

@@ -5,6 +5,11 @@ include $(TOPDIR)/rules.mk
 include ../rules.mk
 include Makefile.inc
 
+# disable SSP for libstdc++
+ifeq ($(ADK_TARGET_LIB_MUSL),y)
+TARGET_CXXFLAGS:=	$(filter-out -fstack-protector-all,$(TARGET_CXXFLAGS))
+endif
+
 GCC_CONFOPTS:=		--prefix=$(TOOLCHAIN_DIR)/usr \
 			--with-bugurl="http://www.openadk.org/" \
 			--build=$(GNU_HOST_NAME) \

toolchain/musl/Makefile

@@ -9,6 +9,9 @@ include ${TOPDIR}/mk/buildhlp.mk
 ifeq ($(ADK_TARGET_CPU_ARCH),ppc)
 GNU_TARGET_NAME:= $(subst ppc,powerpc,$(GNU_TARGET_NAME))
 endif
+# not yet possible
+TARGET_CFLAGS:=		$(filter-out -fstack-protector-all,$(TARGET_CFLAGS))
+TARGET_LDFLAGS:=	$(filter-out -fstack-protector-all,$(TARGET_LDFLAGS))
 
 $(WRKBUILD)/.headers:
 	(cd $(WRKBUILD); CC='$(TARGET_CC)' CROSS_COMPILE='$(TARGET_CROSS)' \