+PKG_JOBS?=$(if $(PKG_BUILD_PARALLEL),$(MAKE_J),-j1)
+endif
+
+PKG_BUILD_FLAGS?=
+__unknown_flags=$(filter-out no-iremap no-mips16 gc-sections no-gc-sections lto no-lto no-mold,$(PKG_BUILD_FLAGS))
+ifneq ($(__unknown_flags),)
+ $(error unknown PKG_BUILD_FLAGS: $(__unknown_flags))
+endif
+
+# $1=flagname, $2=default (0/1)
+define pkg_build_flag
+$(if $(filter no-$(1),$(PKG_BUILD_FLAGS)),0,$(if $(filter $(1),$(PKG_BUILD_FLAGS)),1,$(2)))
+endef
+
+ifeq ($(call pkg_build_flag,iremap,1),1)
+ IREMAP_CFLAGS = $(call iremap,$(PKG_BUILD_DIR),$(notdir $(PKG_BUILD_DIR)))
+ TARGET_CFLAGS += $(IREMAP_CFLAGS)
+endif
+ifdef CONFIG_USE_MIPS16
+ ifeq ($(call pkg_build_flag,mips16,1),1)
+ TARGET_ASFLAGS_DEFAULT = $(filter-out -mips16 -minterlink-mips16,$(TARGET_CFLAGS))
+ TARGET_CFLAGS += -mips16 -minterlink-mips16
+ TARGET_CXXFLAGS += -mips16 -minterlink-mips16
+ endif
+endif
+ifeq ($(call pkg_build_flag,gc-sections,$(if $(CONFIG_USE_GC_SECTIONS),1,0)),1)
+ TARGET_CFLAGS+= -ffunction-sections -fdata-sections
+ TARGET_CXXFLAGS+= -ffunction-sections -fdata-sections
+ TARGET_LDFLAGS+= -Wl,--gc-sections
+endif
+ifeq ($(call pkg_build_flag,lto,$(if $(CONFIG_USE_LTO),1,0)),1)
+ TARGET_CFLAGS+= -flto=auto -fno-fat-lto-objects
+ TARGET_CXXFLAGS+= -flto=auto -fno-fat-lto-objects
+ TARGET_LDFLAGS+= -flto=auto -fuse-linker-plugin
+endif
+ifdef CONFIG_USE_MOLD
+ ifeq ($(call pkg_build_flag,mold,1),1)
+ TARGET_LINKER:=mold
+ endif