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packages/lang/golang/golang-version.mk
T
George Sapkin 9d8ac9df17 golang: add option to skip building bootstrap 
Introduce a new configuration option - GOLANG_BUILD_BOOTSTRAP - that
defaults to enabled:

- When enabled, build the local bootstrap instead of using an external
  one for host Go. If GOLANG_EXTERNAL_BOOTSTRAP_ROOT is set, skip the
  initial 1.4 step.

- When disabled, let Go auto-detect the toolchain or use the toolchain
  specified in GOLANG_EXTERNAL_BOOTSTRAP_ROOT to skip building the
  bootstrap and build host Go using that toolchain directly. Configured
  toolchain must be compatible with the current version of Go.

HOST_BUILD_DEPENDS cannot be conditional, so some Makefile juggling is
needed.

Put menu config under bootstrap only.

Remove unnecessary package-related flags from host-only bootstrap.

Signed-off-by: George Sapkin <george@sapk.in>
2026-02-04 08:56:32 +02:00

301 lines
9.1 KiB
Makefile
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#
# Copyright (C) 2018-2023 Jeffery To
# Copyright (C) 2025-2026 George Sapkin
#
# SPDX-License-Identifier: GPL-2.0-only
HOST_GO_PREFIX:=$(STAGING_DIR_HOSTPKG)
HOST_GO_VERSION_ID:=$(GO_VERSION_MAJOR_MINOR)
HOST_GO_ROOT:=$(HOST_GO_PREFIX)/lib/go-$(HOST_GO_VERSION_ID)
ifeq ($(CONFIG_GOLANG_BUILD_BOOTSTRAP),y)
BOOTSTRAP_DIR:=$(HOST_GO_PREFIX)/lib/go-$(GO_BOOTSTRAP_VERSION)
else
BOOTSTRAP_DIR:=$(call qstrip,$(CONFIG_GOLANG_EXTERNAL_BOOTSTRAP_ROOT))
endif
include ../golang-compiler.mk
include ../golang-package.mk
include ../golang-values.mk
PKG_UNPACK:=$(HOST_TAR) -C "$(PKG_BUILD_DIR)" --strip-components=1 -xzf "$(DL_DIR)/$(PKG_SOURCE)"
HOST_UNPACK:=$(HOST_TAR) -C "$(HOST_BUILD_DIR)" --strip-components=1 -xzf "$(DL_DIR)/$(PKG_SOURCE)"
# Don't strip ELF executables in test data
RSTRIP:=$(subst $(SCRIPT_DIR)/rstrip.sh,go-strip-helper $(SCRIPT_DIR)/rstrip.sh,$(RSTRIP))
ifeq ($(GO_TARGET_SPECTRE_SUPPORTED),1)
PKG_CONFIG_DEPENDS+=CONFIG_GOLANG_SPECTRE
endif
define Package/$(PKG_NAME)/Default
$(call GoPackage/GoSubMenu)
TITLE:=Go programming language
URL:=https://go.dev/
DEPENDS:=$(GO_ARCH_DEPENDS)
endef
define Package/$(PKG_NAME)/Default/description
The Go programming language is an open source project to make programmers more
productive.
Go is expressive, concise, clean, and efficient. Its concurrency mechanisms
make it easy to write programs that get the most out of multi-core and
networked machines, while its novel type system enables flexible and modular
program construction. Go compiles quickly to machine code yet has the
convenience of garbage collection and the power of run-time reflection. It's
a fast, statically typed, compiled language that feels like a dynamically
typed, interpreted language.
endef
ifeq ($(GO_DEFAULT_VERSION),$(GO_VERSION_MAJOR_MINOR))
ALT_PRIORITY:=500
else
ALT_PRIORITY:=100
endif
# go tool requires source present:
# https://github.com/golang/go/issues/4635
define Package/$(PKG_NAME)
$(call Package/$(PKG_NAME)/Default)
TITLE+= (compiler)
DEPENDS+= +golang$(GO_VERSION_MAJOR_MINOR)-src
EXTRA_DEPENDS:=golang$(GO_VERSION_MAJOR_MINOR)-src (=$(PKG_VERSION)-r$(PKG_RELEASE))
MDEPENDS:=+golang-bootstrap
PROVIDES:=@golang
$(if $(filter $(GO_DEFAULT_VERSION),$(GO_VERSION_MAJOR_MINOR)),DEFAULT_VARIANT:=1)
ALTERNATIVES:=\
$(ALT_PRIORITY):/usr/bin/go:/usr/lib/go-$(GO_VERSION_MAJOR_MINOR)/bin/go \
$(ALT_PRIORITY):/usr/bin/gofmt:/usr/lib/go-$(GO_VERSION_MAJOR_MINOR)/bin/gofmt
endef
define Package/$(PKG_NAME)/description
$(call Package/$(PKG_NAME)/Default/description)
This package provides an assembler, compiler, linker, and compiled libraries
for the Go programming language.
endef
define Package/$(PKG_NAME)-doc
$(call Package/$(PKG_NAME)/Default)
TITLE+= (documentation)
PKGARCH:=all
PROVIDES:=@golang-doc
$(if $(filter $(GO_DEFAULT_VERSION),$(GO_VERSION_MAJOR_MINOR)),DEFAULT_VARIANT:=1)
endef
define Package/$(PKG_NAME)-doc/description
$(call Package/$(PKG_NAME)/Default/description)
This package provides the documentation for the Go programming language.
endef
define Package/$(PKG_NAME)-misc
$(call Package/$(PKG_NAME)/Default)
TITLE+= (misc source files)
PKGARCH:=all
PROVIDES:=@golang-misc
$(if $(filter $(GO_DEFAULT_VERSION),$(GO_VERSION_MAJOR_MINOR)),DEFAULT_VARIANT:=1)
endef
define Package/$(PKG_NAME)-misc/description
$(call Package/$(PKG_NAME)/Default/description)
This package provides the Go compiler miscellaneous sources.
endef
define Package/$(PKG_NAME)-src
$(call Package/$(PKG_NAME)/Default)
TITLE+= (source files)
PKGARCH:=all
PROVIDES:=@golang-src
$(if $(filter $(GO_DEFAULT_VERSION),$(GO_VERSION_MAJOR_MINOR)),DEFAULT_VARIANT:=1)
endef
define Package/$(PKG_NAME)-src/description
$(call Package/$(PKG_NAME)/Default/description)
This package provides the Go programming language source files needed for
cross-compilation.
endef
define Package/$(PKG_NAME)-tests
$(call Package/$(PKG_NAME)/Default)
TITLE+= (compiler tests)
DEPENDS+= +golang$(GO_VERSION_MAJOR_MINOR)-src
EXTRA_DEPENDS:=golang$(GO_VERSION_MAJOR_MINOR)-src (=$(PKG_VERSION)-r$(PKG_RELEASE))
PKGARCH:=all
PROVIDES:=@golang-tests
$(if $(filter $(GO_DEFAULT_VERSION),$(GO_VERSION_MAJOR_MINOR)),DEFAULT_VARIANT:=1)
endef
define Package/$(PKG_NAME)-tests/description
$(call Package/$(PKG_NAME)/Default/description)
This package provides the Go compiler tests for stdlib.
endef
# Host
ifeq ($(GO_HOST_PIE_SUPPORTED),1)
HOST_GO_ENABLE_PIE:=1
endif
# When using GO_LDFLAGS to set buildmode=pie, the PIE install suffix does not
# apply (we also delete the std lib during Host/Install)
$(eval $(call GoCompiler/AddProfile,$(HOST_GO_PROFILE_ID),$(HOST_BUILD_DIR),$(HOST_GO_PREFIX),$(HOST_GO_VERSION_ID),$(GO_HOST_OS_ARCH)))
HOST_GO_VARS?= \
GOHOSTARCH="$(GO_HOST_ARCH)" \
GOCACHE="$(GO_BUILD_CACHE_DIR)" \
GOENV=off \
CC="$(HOSTCC_NOCACHE)" \
CXX="$(HOSTCXX_NOCACHE)"
define Host/Configure
$(call GoCompiler/$(HOST_GO_PROFILE_ID)/CheckHost,$(HOST_GO_VALID_OS_ARCH))
mkdir -p "$(GO_BUILD_CACHE_DIR)"
endef
define Host/Compile
$(call GoCompiler/$(HOST_GO_PROFILE_ID)/Make, \
GOROOT_BOOTSTRAP="$(BOOTSTRAP_DIR)" \
$(if $(HOST_GO_ENABLE_PIE),GO_LDFLAGS="-buildmode pie") \
$(HOST_GO_VARS) \
)
endef
# If host and target OS/arch are the same, when go compiles a program, it will
# use the host std lib, so remove it now and force go to rebuild std for target
# later
define Host/Install
$(call Host/Uninstall)
$(call GoCompiler/$(HOST_GO_PROFILE_ID)/Install/Bin)
$(call GoCompiler/$(HOST_GO_PROFILE_ID)/Install/Src)
$(call GoCompiler/$(HOST_GO_PROFILE_ID)/Install/BinLinks)
rm -rf "$(HOST_GO_ROOT)/pkg/$(GO_HOST_OS_ARCH)"
$(INSTALL_DIR) "$(HOST_GO_ROOT)/openwrt"
$(INSTALL_BIN) ../go-gcc-helper "$(HOST_GO_ROOT)/openwrt"
$(LN) go-gcc-helper "$(HOST_GO_ROOT)/openwrt/gcc"
$(LN) go-gcc-helper "$(HOST_GO_ROOT)/openwrt/g++"
endef
define Host/Uninstall
rm -rf "$(HOST_GO_ROOT)/openwrt"
$(call GoCompiler/$(HOST_GO_PROFILE_ID)/Uninstall/BinLinks)
$(call GoCompiler/$(HOST_GO_PROFILE_ID)/Uninstall)
endef
# Target
ifeq ($(GO_PKG_ENABLE_PIE),1)
PKG_GO_INSTALL_SUFFIX:=$(GO_TARGET_PIE_INSTALL_SUFFIX)
endif
$(eval $(call GoCompiler/AddProfile,Package,$(PKG_BUILD_DIR),$(PKG_GO_PREFIX),$(PKG_GO_VERSION_ID),$(GO_OS_ARCH),$(PKG_GO_INSTALL_SUFFIX)))
PKG_GO_ZBOOTSTRAP_MODS?= \
s/DefaultGO386 = `[^`]*`/DefaultGO386 = `$(or $(GO_386),sse2)`/; \
s/DefaultGOAMD64 = `[^`]*`/DefaultGOAMD64 = `$(or $(GO_AMD64),v1)`/; \
s/DefaultGOARM = `[^`]*`/DefaultGOARM = `$(or $(GO_ARM),7)`/; \
s/DefaultGOARM64 = `[^`]*`/DefaultGOARM64 = `$(or $(GO_ARM64),v8.0)`/; \
s/DefaultGOMIPS = `[^`]*`/DefaultGOMIPS = `$(or $(GO_MIPS),hardfloat)`/; \
s/DefaultGOMIPS64 = `[^`]*`/DefaultGOMIPS64 = `$(or $(GO_MIPS64),hardfloat)`/; \
s/DefaultGOPPC64 = `[^`]*`/DefaultGOPPC64 = `$(or $(GO_PPC64),power8)`/;
PKG_GO_ZBOOTSTRAP_PATH:=$(PKG_BUILD_DIR)/src/internal/buildcfg/zbootstrap.go
PKG_GO_VARS?= \
GOHOSTARCH="$(GO_HOST_ARCH)" \
GOCACHE="$(GO_BUILD_CACHE_DIR)" \
GOENV=off \
GO_GCC_HELPER_PATH="$$$$PATH" \
CC=gcc \
CXX=g++ \
PKG_CONFIG=pkg-config \
PATH="$(HOST_GO_ROOT)/openwrt:$$$$PATH"
PKG_GO_GCFLAGS?= \
$(if $(GO_PKG_ENABLE_SPECTRE),-spectre all)
PKG_GO_ASMFLAGS?= \
$(if $(GO_PKG_ENABLE_SPECTRE),-spectre all)
PKG_GO_LDFLAGS?= \
-buildid '$(SOURCE_DATE_EPOCH)' \
-linkmode external \
-extldflags '$(patsubst -z%,-Wl$(comma)-z$(comma)%,$(TARGET_LDFLAGS))' \
$(if $(CONFIG_NO_STRIP)$(CONFIG_DEBUG),,-s -w)
PKG_GO_INSTALL_ARGS?= \
-buildvcs=false \
-trimpath \
-ldflags "all=$(PKG_GO_LDFLAGS)" \
$(if $(PKG_GO_GCFLAGS),-gcflags "all=$(PKG_GO_GCFLAGS)") \
$(if $(PKG_GO_ASMFLAGS),-asmflags "all=$(PKG_GO_ASMFLAGS)") \
$(if $(filter $(GO_PKG_ENABLE_PIE),1),-buildmode pie)
define Build/Configure
mkdir -p "$(GO_BUILD_CACHE_DIR)"
endef
define Build/Compile
@echo "Building target Go first stage"
$(call GoCompiler/Package/Make, \
GOROOT_BOOTSTRAP="$(HOST_GO_ROOT)" \
GO_GCC_HELPER_CC="$(HOSTCC)" \
GO_GCC_HELPER_CXX="$(HOSTCXX)" \
$(PKG_GO_VARS) \
)
$(SED) '$(PKG_GO_ZBOOTSTRAP_MODS)' "$(PKG_GO_ZBOOTSTRAP_PATH)"
@echo "Building target Go second stage"
cd "$(PKG_BUILD_DIR)/bin" ; \
export $(GO_PKG_TARGET_VARS) ; \
$(CP) go go-host ; \
GO_GCC_HELPER_CC="$(TARGET_CC)" \
GO_GCC_HELPER_CXX="$(TARGET_CXX)" \
$(PKG_GO_VARS) \
./go-host install -a $(PKG_GO_INSTALL_ARGS) std cmd; \
retval=$$$$? ; \
rm -f go-host ; \
exit $$$$retval
endef
define Package/$(PKG_NAME)/install
$(call GoCompiler/Package/Install/Bin,$(1)$(PKG_GO_PREFIX),target)
endef
define Package/$(PKG_NAME)-doc/install
$(call GoCompiler/Package/Install/Doc,$(1)$(PKG_GO_PREFIX))
endef
define Package/$(PKG_NAME)-misc/install
$(call GoCompiler/Package/Install/Misc,$(1)$(PKG_GO_PREFIX))
endef
define Package/$(PKG_NAME)-src/install
$(call GoCompiler/Package/Install/Src,$(1)$(PKG_GO_PREFIX),target)
endef
define Package/$(PKG_NAME)-tests/install
$(call GoCompiler/Package/Install/Tests,$(1)$(PKG_GO_PREFIX))
endef
# src/debug contains ELF executables as test data and they reference these
# libraries we need to call this to pass CheckDependencies in package-pack.mk
define Package/$(PKG_NAME)-tests/extra_provides
echo 'libc.so.6' libstdc++.so.6' libtiff.so.6' | tr ' ' '\n'
endef
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