golang: Add golang-host-build.mk

This adds a Makefile for host builds of Go programs.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

diff --git a/lang/golang/golang-host-build.mk b/lang/golang/golang-host-build.mk
new file mode 100644 (file)
index 0000000..ee4f1ea
--- /dev/null
+++ b/lang/golang/golang-host-build.mk
@@ -0,0 +1,220 @@
+#
+# Copyright (C) 2020 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
+
+include $(GO_INCLUDE_DIR)/golang-values.mk
+
+
+# these variables have the same meanings as in golang-package.mk
+GO_HOST_INSTALL_EXTRA?=$(GO_PKG_INSTALL_EXTRA)
+GO_HOST_INSTALL_ALL?=$(GO_PKG_INSTALL_ALL)
+GO_HOST_SOURCE_ONLY?=$(GO_PKG_SOURCE_ONLY)
+GO_HOST_BUILD_PKG?=$(GO_PKG_BUILD_PKG)
+GO_HOST_EXCLUDES?=$(GO_PKG_EXCLUDES)
+GO_HOST_GO_GENERATE?=$(GO_PKG_GO_GENERATE)
+GO_HOST_GCFLAGS?=$(GO_PKG_GCFLAGS)
+GO_HOST_LDFLAGS?=$(GO_PKG_LDFLAGS)
+GO_HOST_LDFLAGS_X?=$(GO_PKG_LDFLAGS_X)
+GO_HOST_TAGS?=$(GO_PKG_TAGS)
+GO_HOST_INSTALL_BIN_PATH?=/bin
+
+
+# need to repeat this here in case golang-package.mk is not included
+GO_PKG_BUILD_PKG?=$(strip $(GO_PKG))/...
+
+GO_HOST_WORK_DIR_NAME:=.go_work
+GO_HOST_BUILD_DIR=$(HOST_BUILD_DIR)/$(GO_HOST_WORK_DIR_NAME)/build
+GO_HOST_BUILD_BIN_DIR=$(GO_HOST_BUILD_DIR)/bin
+
+GO_HOST_BUILD_DEPENDS_PATH:=/share/gocode
+GO_HOST_BUILD_DEPENDS_SRC=$(STAGING_DIR_HOSTPKG)$(GO_HOST_BUILD_DEPENDS_PATH)/src
+
+GO_HOST_DIR_NAME:=$(lastword $(subst /,$(space),$(CURDIR)))
+GO_HOST_STAGING_DIR:=$(TMP_DIR)/host-stage-$(GO_HOST_DIR_NAME)
+GO_HOST_STAGING_FILES_LIST_DIR:=$(HOST_BUILD_PREFIX)/stamp
+GO_HOST_BIN_STAGING_FILES_LIST:=$(GO_HOST_STAGING_FILES_LIST_DIR)/$(GO_HOST_DIR_NAME)-bin.list
+GO_HOST_SRC_STAGING_FILES_LIST:=$(GO_HOST_STAGING_FILES_LIST_DIR)/$(GO_HOST_DIR_NAME)-src.list
+
+ifeq ($(GO_HOST_PIE_SUPPORTED),1)
+  GO_HOST_ENABLE_PIE:=1
+endif
+
+GO_HOST_BUILD_CONFIG_VARS= \
+       GO_PKG="$(strip $(GO_PKG))" \
+       GO_INSTALL_EXTRA="$(strip $(GO_HOST_INSTALL_EXTRA))" \
+       GO_INSTALL_ALL="$(strip $(GO_HOST_INSTALL_ALL))" \
+       GO_SOURCE_ONLY="$(strip $(GO_HOST_SOURCE_ONLY))" \
+       GO_BUILD_PKG="$(strip $(GO_HOST_BUILD_PKG))" \
+       GO_EXCLUDES="$(strip $(GO_HOST_EXCLUDES))" \
+       GO_GO_GENERATE="$(strip $(GO_HOST_GO_GENERATE))" \
+       GO_INSTALL_BIN_PATH="$(strip $(GO_HOST_INSTALL_BIN_PATH))" \
+       BUILD_DIR="$(HOST_BUILD_DIR)" \
+       GO_BUILD_DIR="$(GO_HOST_BUILD_DIR)" \
+       GO_BUILD_BIN_DIR="$(GO_HOST_BUILD_BIN_DIR)" \
+       GO_BUILD_DEPENDS_PATH="$(GO_HOST_BUILD_DEPENDS_PATH)" \
+       GO_BUILD_DEPENDS_SRC="$(GO_HOST_BUILD_DEPENDS_SRC)"
+
+GO_HOST_MORE_CFLAGS?= \
+       -Wformat -Werror=format-security \
+       -fstack-protector-strong \
+       -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 \
+       -Wl,-z,now -Wl,-z,relro \
+       $(if $(GO_HOST_ENABLE_PIE),$(FPIC))
+
+GO_HOST_MORE_LDFLAGS?= \
+       -znow -zrelro \
+       $(if $(GO_HOST_ENABLE_PIE),$(FPIC) -specs=$(INCLUDE_DIR)/hardened-ld-pie.specs)
+
+GO_HOST_TARGET_VARS= \
+       CGO_ENABLED=1 \
+       CC=gcc \
+       CXX=g++ \
+       PKG_CONFIG=pkg-config \
+       CGO_CFLAGS="$(HOST_CFLAGS) $(GO_HOST_MORE_CFLAGS)" \
+       CGO_CPPFLAGS="$(HOST_CPPFLAGS) $(GO_HOST_MORE_CPPFLAGS)" \
+       CGO_CXXFLAGS="$(HOST_CFLAGS) $(GO_HOST_MORE_CFLAGS)" \
+       CGO_LDFLAGS="$(HOST_LDFLAGS) $(GO_HOST_MORE_LDFLAGS)" \
+       GO_GCC_HELPER_CC="$(HOSTCC)" \
+       GO_GCC_HELPER_CXX="$(HOSTCXX)" \
+       GO_GCC_HELPER_PATH="$$$$PATH" \
+       PATH="$(STAGING_DIR_HOSTPKG)/lib/go-cross/openwrt:$$$$PATH"
+
+GO_HOST_BUILD_VARS= \
+       GOPATH="$(GO_HOST_BUILD_DIR)" \
+       GOCACHE="$(GO_BUILD_CACHE_DIR)" \
+       GOMODCACHE="$(GO_MOD_CACHE_DIR)" \
+       GOENV=off
+
+GO_HOST_VARS= \
+       $(GO_HOST_TARGET_VARS) \
+       $(GO_HOST_BUILD_VARS)
+
+GO_HOST_DEFAULT_LDFLAGS= \
+       -linkmode external \
+       -extldflags '$(patsubst -z%,-Wl$(comma)-z$(comma)%,$(HOST_LDFLAGS) $(GO_HOST_MORE_LDFLAGS))'
+
+GO_HOST_CUSTOM_LDFLAGS= \
+       $(GO_HOST_LDFLAGS) \
+       $(patsubst %,-X %,$(GO_HOST_LDFLAGS_X))
+
+GO_HOST_INSTALL_ARGS= \
+       -v \
+       -ldflags "all=$(GO_HOST_DEFAULT_LDFLAGS)" \
+       $(if $(filter $(GO_HOST_ENABLE_PIE),1),-buildmode pie) \
+       $(if $(GO_HOST_GCFLAGS),-gcflags "$(GO_HOST_GCFLAGS)") \
+       $(if $(GO_HOST_CUSTOM_LDFLAGS),-ldflags "$(GO_HOST_CUSTOM_LDFLAGS) $(GO_HOST_DEFAULT_LDFLAGS)") \
+       $(if $(GO_HOST_TAGS),-tags "$(GO_HOST_TAGS)")
+
+define GoHost/Host/Configure
+       $(GO_GENERAL_BUILD_CONFIG_VARS) \
+       $(GO_HOST_BUILD_CONFIG_VARS) \
+       $(SHELL) $(GO_INCLUDE_DIR)/golang-build.sh configure
+endef
+
+# $(1) additional arguments for go command line (optional)
+define GoHost/Host/Compile
+       $(GO_GENERAL_BUILD_CONFIG_VARS) \
+       $(GO_HOST_BUILD_CONFIG_VARS) \
+       $(GO_HOST_VARS) \
+       $(SHELL) $(GO_INCLUDE_DIR)/golang-build.sh build $(GO_HOST_INSTALL_ARGS) $(1)
+endef
+
+define GoHost/Host/Install/Bin
+       rm -rf "$(GO_HOST_STAGING_DIR)"
+       mkdir -p "$(GO_HOST_STAGING_DIR)" "$(GO_HOST_STAGING_FILES_LIST_DIR)"
+
+       $(GO_GENERAL_BUILD_CONFIG_VARS) \
+       $(GO_HOST_BUILD_CONFIG_VARS) \
+       $(SHELL) $(GO_INCLUDE_DIR)/golang-build.sh install_bin "$(GO_HOST_STAGING_DIR)"
+
+       if [ -f "$(GO_HOST_BIN_STAGING_FILES_LIST)" ]; then \
+               "$(SCRIPT_DIR)/clean-package.sh" \
+                       "$(GO_HOST_BIN_STAGING_FILES_LIST)" \
+                       "$(1)" ; \
+       fi
+
+       cd "$(GO_HOST_STAGING_DIR)" && find ./ > "$(GO_HOST_STAGING_DIR).files"
+
+       $(call locked, \
+               mv "$(GO_HOST_STAGING_DIR).files" "$(GO_HOST_BIN_STAGING_FILES_LIST)" && \
+               $(CP) "$(GO_HOST_STAGING_DIR)"/* "$(1)/", \
+               host-staging-dir \
+       )
+
+       rm -rf "$(GO_HOST_STAGING_DIR)"
+endef
+
+define GoHost/Host/Install/Src
+       rm -rf "$(GO_HOST_STAGING_DIR)"
+       mkdir -p "$(GO_HOST_STAGING_DIR)" "$(GO_HOST_STAGING_FILES_LIST_DIR)"
+
+       $(GO_GENERAL_BUILD_CONFIG_VARS) \
+       $(GO_HOST_BUILD_CONFIG_VARS) \
+       $(SHELL) $(GO_INCLUDE_DIR)/golang-build.sh install_src "$(GO_HOST_STAGING_DIR)"
+
+       if [ -f "$(GO_HOST_SRC_STAGING_FILES_LIST)" ]; then \
+               "$(SCRIPT_DIR)/clean-package.sh" \
+                       "$(GO_HOST_SRC_STAGING_FILES_LIST)" \
+                       "$(1)" ; \
+       fi
+
+       cd "$(GO_HOST_STAGING_DIR)" && find ./ > "$(GO_HOST_STAGING_DIR).files"
+
+       $(call locked, \
+               mv "$(GO_HOST_STAGING_DIR).files" "$(GO_HOST_SRC_STAGING_FILES_LIST)" && \
+               $(CP) "$(GO_HOST_STAGING_DIR)"/* "$(1)/", \
+               host-staging-dir \
+       )
+
+       rm -rf "$(GO_HOST_STAGING_DIR)"
+endef
+
+define GoHost/Host/Install
+       $(if $(filter $(GO_HOST_SOURCE_ONLY),1),, \
+               $(call GoHost/Host/Install/Bin,$(1)) \
+       )
+       $(call GoHost/Host/Install/Src,$(1))
+endef
+
+define GoHost/Host/Uninstall
+       if [ -f "$(GO_HOST_BIN_STAGING_FILES_LIST)" ]; then \
+               "$(SCRIPT_DIR)/clean-package.sh" \
+                       "$(GO_HOST_BIN_STAGING_FILES_LIST)" \
+                       "$(HOST_BUILD_PREFIX)" ; \
+               rm -f "$(GO_HOST_BIN_STAGING_FILES_LIST)" ; \
+       fi
+
+       if [ -f "$(GO_HOST_SRC_STAGING_FILES_LIST)" ]; then \
+               "$(SCRIPT_DIR)/clean-package.sh" \
+                       "$(GO_HOST_SRC_STAGING_FILES_LIST)" \
+                       "$(HOST_BUILD_PREFIX)" ; \
+               rm -f "$(GO_HOST_SRC_STAGING_FILES_LIST)" ; \
+       fi
+endef
+
+
+ifneq ($(strip $(GO_PKG)),)
+  Host/Configure=$(call GoHost/Host/Configure)
+  Host/Compile=$(call GoHost/Host/Compile)
+  Hooks/HostCompile/Post+=Go/CacheCleanup
+  Host/Uninstall=$(call GoHost/Host/Uninstall,$(1))
+endif
+
+define GoHostBuild
+  Host/Install=$$(call GoHost/Host/Install,$$(1))
+endef
+
+define GoBinHostBuild
+  Host/Install=$$(call GoHost/Host/Install/Bin,$$(1))
+endef
+
+define GoSrcHostBuild
+  Host/Install=$$(call GoHost/Host/Install/Src,$$(1))
+endef