# # Copyright (C) 2018-2023 Jeffery To # # This is free software, licensed under the GNU General Public License v2. # See /LICENSE for more information. # ifeq ($(origin GO_INCLUDE_DIR),undefined) GO_INCLUDE_DIR:=$(dir $(lastword $(MAKEFILE_LIST))) endif # Unset environment variables # There are more magic variables to track down, but ain't nobody got time for that # From https://pkg.go.dev/cmd/go#hdr-Environment_variables # General-purpose environment variables: unexport \ GO111MODULE \ GCCGO \ GOARCH \ GOBIN \ GOCACHE \ GOMODCACHE \ GODEBUG \ GOENV \ GOFLAGS \ GOOS \ GOPATH \ GOROOT \ GOTOOLCHAIN \ GOTMPDIR \ GOWORK # Unmodified: # GOINSECURE # GOPRIVATE # GOPROXY # GONOPROXY # GOSUMDB # GONOSUMDB # GOVCS # Environment variables for use with cgo: unexport \ AR \ CC \ CGO_ENABLED \ CGO_CFLAGS CGO_CFLAGS_ALLOW CGO_CFLAGS_DISALLOW \ CGO_CPPFLAGS CGO_CPPFLAGS_ALLOW CGO_CPPFLAGS_DISALLOW \ CGO_CXXFLAGS CGO_CXXFLAGS_ALLOW CGO_CXXFLAGS_DISALLOW \ CGO_FFLAGS CGO_FFLAGS_ALLOW CGO_FFLAGS_DISALLOW \ CGO_LDFLAGS CGO_LDFLAGS_ALLOW CGO_LDFLAGS_DISALLOW \ CXX \ FC # Unmodified: # PKG_CONFIG # Architecture-specific environment variables: unexport \ GOARM \ GOARM64 \ GO386 \ GOAMD64 \ GOMIPS \ GOMIPS64 \ GOPPC64 \ GORISCV64 \ GOWASM # Environment variables for use with code coverage: unexport \ GOCOVERDIR # Special-purpose environment variables: unexport \ GCCGOTOOLDIR \ GOEXPERIMENT \ GOROOT_FINAL \ GO_EXTLINK_ENABLED # Unmodified: # GIT_ALLOW_PROTOCOL # From https://pkg.go.dev/runtime#hdr-Environment_Variables unexport \ GOGC \ GOMEMLIMIT \ GOMAXPROCS \ GORACE \ GOTRACEBACK # From https://pkg.go.dev/cmd/cgo#hdr-Using_cgo_with_the_go_command unexport \ CC_FOR_TARGET \ CXX_FOR_TARGET # Todo: # CC_FOR_${GOOS}_${GOARCH} # CXX_FOR_${GOOS}_${GOARCH} # From https://go.dev/doc/install/source#environment unexport \ GOHOSTOS \ GOHOSTARCH # From https://go.dev/src/make.bash unexport \ GO_GCFLAGS \ GO_LDFLAGS \ GO_LDSO \ GO_DISTFLAGS \ GOBUILDTIMELOGFILE \ GOROOT_BOOTSTRAP # From https://go.dev/doc/go1.9#parallel-compile unexport \ GO19CONCURRENTCOMPILATION # From https://go.dev/src/cmd/dist/build.go unexport \ BOOT_GO_GCFLAGS \ BOOT_GO_LDFLAGS # From https://go.dev/src/cmd/dist/buildtool.go unexport \ GOBOOTSTRAP_TOOLEXEC # GOOS / GOARCH go_arch=$(subst \ aarch64,arm64,$(subst \ i386,386,$(subst \ loongarch64,loong64,$(subst \ mipsel,mipsle,$(subst \ mips64el,mips64le,$(subst \ powerpc64,ppc64,$(subst \ x86_64,amd64,$(1)))))))) GO_OS:=linux GO_ARCH:=$(call go_arch,$(ARCH)) GO_OS_ARCH:=$(GO_OS)_$(GO_ARCH) GO_HOST_OS:=$(call tolower,$(HOST_OS)) GO_HOST_ARCH:=$(call go_arch,$(subst \ armv6l,arm,$(subst \ armv7l,arm,$(subst \ i686,i386,$(HOST_ARCH))))) GO_HOST_OS_ARCH:=$(GO_HOST_OS)_$(GO_HOST_ARCH) ifeq ($(GO_OS_ARCH),$(GO_HOST_OS_ARCH)) GO_HOST_TARGET_SAME:=1 else GO_HOST_TARGET_DIFFERENT:=1 endif ifeq ($(GO_ARCH),386) ifeq ($(CONFIG_TARGET_x86_geode)$(CONFIG_TARGET_x86_legacy),y) GO_386:=softfloat else GO_386:=sse2 endif # -fno-plt: causes "unexpected GOT reloc for non-dynamic symbol" errors GO_CFLAGS_TO_REMOVE:=-fno-plt else ifeq ($(GO_ARCH),amd64) GO_AMD64:=v1 else ifeq ($(GO_ARCH),arm) GO_TARGET_FPU:=$(word 2,$(subst +,$(space),$(call qstrip,$(CONFIG_CPU_TYPE)))) # FPU names from https://gcc.gnu.org/onlinedocs/gcc-8.4.0/gcc/ARM-Options.html#index-mfpu-1 # see also https://github.com/gcc-mirror/gcc/blob/releases/gcc-8.4.0/gcc/config/arm/arm-cpus.in ifeq ($(GO_TARGET_FPU),) GO_ARM:=5 else ifneq ($(filter $(GO_TARGET_FPU),vfp vfpv2),) GO_ARM:=6 else GO_ARM:=7 endif else ifneq ($(filter $(GO_ARCH),mips mipsle),) ifeq ($(CONFIG_HAS_FPU),y) GO_MIPS:=hardfloat else GO_MIPS:=softfloat endif # -mips32r2: conflicts with -march=mips32 set by go GO_CFLAGS_TO_REMOVE:=-mips32r2 else ifneq ($(filter $(GO_ARCH),mips64 mips64le),) ifeq ($(CONFIG_HAS_FPU),y) GO_MIPS64:=hardfloat else GO_MIPS64:=softfloat endif else ifeq ($(GO_ARCH),ppc64) GO_PPC64:=power8 endif # Target Go GO_ARCH_DEPENDS:=@(aarch64||arm||i386||i686||loongarch64||mips||mips64||mips64el||mipsel||powerpc64||riscv64||x86_64) # ASLR/PIE # From https://go.dev/src/internal/platform/supported.go GO_PIE_SUPPORTED_OS_ARCH:= \ android_386 android_amd64 android_arm android_arm64 \ linux_386 linux_amd64 linux_arm linux_arm64 \ windows_386 windows_amd64 windows_arm windows_arm64 \ \ darwin_amd64 darwin_arm64 \ ios_amd64 ios_arm64 \ \ freebsd_amd64 \ \ aix_ppc64 \ \ linux_loong64 linux_ppc64le linux_riscv64 linux_s390x # From https://go.dev/src/cmd/go/internal/work/init.go go_pie_install_suffix=$(if $(filter $(1),aix_ppc64 windows_386 windows_amd64 windows_arm windows_arm64),,shared) ifneq ($(filter $(GO_HOST_OS_ARCH),$(GO_PIE_SUPPORTED_OS_ARCH)),) GO_HOST_PIE_SUPPORTED:=1 GO_HOST_PIE_INSTALL_SUFFIX:=$(call go_pie_install_suffix,$(GO_HOST_OS_ARCH)) endif ifneq ($(filter $(GO_OS_ARCH),$(GO_PIE_SUPPORTED_OS_ARCH)),) GO_TARGET_PIE_SUPPORTED:=1 GO_TARGET_PIE_INSTALL_SUFFIX:=$(call go_pie_install_suffix,$(GO_OS_ARCH)) endif # Spectre mitigations GO_SPECTRE_SUPPORTED_ARCH:=amd64 ifneq ($(filter $(GO_HOST_ARCH),$(GO_SPECTRE_SUPPORTED_ARCH)),) GO_HOST_SPECTRE_SUPPORTED:=1 endif ifneq ($(filter $(GO_ARCH),$(GO_SPECTRE_SUPPORTED_ARCH)),) GO_TARGET_SPECTRE_SUPPORTED:=1 endif # General build info GO_BUILD_CACHE_DIR:=$(or $(call qstrip,$(CONFIG_GOLANG_BUILD_CACHE_DIR)),$(TMP_DIR)/go-build) GO_MOD_CACHE_DIR:=$(DL_DIR)/go-mod-cache GO_MOD_ARGS= \ -modcacherw GO_GENERAL_BUILD_CONFIG_VARS= \ CONFIG_GOLANG_MOD_CACHE_WORLD_READABLE="$(CONFIG_GOLANG_MOD_CACHE_WORLD_READABLE)" \ GO_BUILD_CACHE_DIR="$(GO_BUILD_CACHE_DIR)" \ GO_MOD_CACHE_DIR="$(GO_MOD_CACHE_DIR)" \ GO_MOD_ARGS="$(GO_MOD_ARGS)" define Go/CacheCleanup $(GO_GENERAL_BUILD_CONFIG_VARS) \ $(SHELL) $(GO_INCLUDE_DIR)/golang-build.sh cache_cleanup endef