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#
# Copyright (C) 2018 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
# Variables (all optional, except GO_PKG) to be set in package
# Makefiles:
#
# GO_PKG (required) - name of Go package
#
# Go name of the package.
#
# e.g. GO_PKG:=golang.org/x/text
#
#
# GO_PKG_INSTALL_EXTRA - list of regular expressions, default empty
#
# Additional files/directories to install. By default, only these
# files are installed:
#
# * Files with one of these extensions:
# .go, .c, .cc, .cpp, .h, .hh, .hpp, .proto, .s
#
# * Files in any 'testdata' directory
#
# * go.mod and go.sum, in any directory
#
# e.g. GO_PKG_INSTALL_EXTRA:=example.toml marshal_test.toml
#
#
# GO_PKG_INSTALL_ALL - boolean (0 or 1), default false
#
# If true, install all files regardless of extension or directory.
#
# e.g. GO_PKG_INSTALL_ALL:=1
#
#
# GO_PKG_SOURCE_ONLY - boolean (0 or 1), default false
#
# If true, 'go install' will not be called. If the package does not
# (or should not) build any binaries, then specifying this option will
# save build time.
#
# e.g. GO_PKG_SOURCE_ONLY:=1
#
#
# GO_PKG_BUILD_PKG - list of build targets, default GO_PKG/...
#
# Build targets for compiling this Go package, i.e. arguments passed
# to 'go install'
#
# e.g. GO_PKG_BUILD_PKG:=github.com/debian/ratt/cmd/...
#
#
# GO_PKG_EXCLUDES - list of regular expressions, default empty
#
# Patterns to exclude from the build targets expanded from
# GO_PKG_BUILD_PKG.
#
# e.g. GO_PKG_EXCLUDES:=examples/
#
#
# GO_PKG_GO_GENERATE - boolean (0 or 1), default false
#
# If true, 'go generate' will be called on all build targets (as
# determined by GO_PKG_BUILD_PKG and GO_PKG_EXCLUDES). This is usually
# not necessary.
#
# e.g. GO_PKG_GO_GENERATE:=1
#
#
# GO_PKG_GCFLAGS - list of arguments, default empty
#
# Additional go tool compile arguments to use when building targets.
#
# e.g. GO_PKG_GCFLAGS:=-N -l
#
#
# GO_PKG_LDFLAGS - list of arguments, default empty
#
# Additional go tool link arguments to use when building targets.
#
# Note that the OpenWrt build system has an option to strip binaries
# (enabled by default), so -s (Omit the symbol table and debug
# information) and -w (Omit the DWARF symbol table) flags are not
# necessary.
#
# e.g. GO_PKG_LDFLAGS:=-r dir1:dir2 -u
#
#
# GO_PKG_LDFLAGS_X - list of string variable definitions, default empty
#
# Each definition will be passed as the parameter to the -X go tool
# link argument, i.e. -ldflags "-X importpath.name=value"
#
# e.g. GO_PKG_LDFLAGS_X:=main.Version=$(PKG_VERSION) main.BuildStamp=$(SOURCE_DATE_EPOCH)
# Credit for this package build process (GoPackage/Build/Configure and
# GoPackage/Build/Compile) belong to Debian's dh-golang completely.
# https://salsa.debian.org/go-team/packages/dh-golang
# for building packages, not user code
GO_PKG_PATH:=/usr/share/gocode
GO_PKG_BUILD_PKG?=$(strip $(GO_PKG))/...
GO_PKG_WORK_DIR_NAME:=.go_work
GO_PKG_WORK_DIR:=$(PKG_BUILD_DIR)/$(GO_PKG_WORK_DIR_NAME)
GO_PKG_BUILD_DIR:=$(GO_PKG_WORK_DIR)/build
GO_PKG_CACHE_DIR:=$(GO_PKG_WORK_DIR)/cache
GO_PKG_BUILD_BIN_DIR:=$(GO_PKG_BUILD_DIR)/bin$(if $(GO_HOST_TARGET_DIFFERENT),/$(GO_OS_ARCH))
GO_PKG_BUILD_DEPENDS_SRC:=$(STAGING_DIR)$(GO_PKG_PATH)/src
ifdef CONFIG_PKG_ASLR_PIE_ALL
ifeq ($(strip $(PKG_ASLR_PIE)),1)
ifeq ($(GO_TARGET_PIE_SUPPORTED),1)
GO_PKG_ENABLE_PIE:=1
else
$(warning PIE buildmode is not supported for $(GO_OS)/$(GO_ARCH))
endif
endif
endif
ifdef CONFIG_PKG_ASLR_PIE_REGULAR
ifeq ($(strip $(PKG_ASLR_PIE_REGULAR)),1)
ifeq ($(GO_TARGET_PIE_SUPPORTED),1)
GO_PKG_ENABLE_PIE:=1
else
$(warning PIE buildmode is not supported for $(GO_OS)/$(GO_ARCH))
endif
endif
endif
# sstrip causes corrupted section header size
ifneq ($(CONFIG_USE_SSTRIP),)
ifneq ($(CONFIG_DEBUG),)
GO_PKG_STRIP_ARGS:=--strip-unneeded --remove-section=.comment --remove-section=.note
else
GO_PKG_STRIP_ARGS:=--strip-all
endif
STRIP:=$(TARGET_CROSS)strip $(GO_PKG_STRIP_ARGS)
endif
define GoPackage/GoSubMenu
SUBMENU:=Go
SECTION:=lang
CATEGORY:=Languages
endef
GO_PKG_TARGET_VARS= \
GOOS=$(GO_OS) \
GOARCH=$(GO_ARCH) \
GO386=$(GO_386) \
GOARM=$(GO_ARM) \
GOMIPS=$(GO_MIPS) \
GOMIPS64=$(GO_MIPS64) \
CGO_ENABLED=1 \
CC=$(TARGET_CC) \
CXX=$(TARGET_CXX) \
CGO_CFLAGS="$(filter-out $(GO_CFLAGS_TO_REMOVE),$(TARGET_CFLAGS))" \
CGO_CPPFLAGS="$(TARGET_CPPFLAGS)" \
CGO_CXXFLAGS="$(filter-out $(GO_CFLAGS_TO_REMOVE),$(TARGET_CXXFLAGS))" \
CGO_LDFLAGS="$(TARGET_LDFLAGS)"
GO_PKG_BUILD_VARS= \
GOPATH=$(GO_PKG_BUILD_DIR) \
GOCACHE=$(GO_PKG_CACHE_DIR) \
GOENV=off
GO_PKG_DEFAULT_VARS= \
$(GO_PKG_TARGET_VARS) \
$(GO_PKG_BUILD_VARS)
GO_PKG_VARS=$(GO_PKG_DEFAULT_VARS)
# do not use for new code; this will be removed after the next OpenWrt release
GoPackage/Environment=$(GO_PKG_VARS)
GO_PKG_DEFAULT_LDFLAGS= \
-buildid '$(SOURCE_DATE_EPOCH)' \
-linkmode external \
-extldflags '$(patsubst -z%,-Wl$(comma)-z$(comma)%,$(TARGET_LDFLAGS))'
GO_PKG_INSTALL_ARGS= \
-v \
-trimpath \
-ldflags "all=$(GO_PKG_DEFAULT_LDFLAGS)"
ifeq ($(GO_PKG_ENABLE_PIE),1)
GO_PKG_INSTALL_ARGS+= -buildmode pie
endif
ifeq ($(GO_ARCH),arm)
GO_PKG_INSTALL_ARGS+= -installsuffix "v$(GO_ARM)"
else ifneq ($(filter $(GO_ARCH),mips mipsle),)
GO_PKG_INSTALL_ARGS+= -installsuffix "$(GO_MIPS)"
else ifneq ($(filter $(GO_ARCH),mips64 mips64le),)
GO_PKG_INSTALL_ARGS+= -installsuffix "$(GO_MIPS64)"
endif
ifneq ($(strip $(GO_PKG_GCFLAGS)),)
GO_PKG_INSTALL_ARGS+= -gcflags "$(GO_PKG_GCFLAGS)"
endif
GO_PKG_CUSTOM_LDFLAGS= \
$(GO_PKG_LDFLAGS) \
$(patsubst %,-X %,$(GO_PKG_LDFLAGS_X))
ifneq ($(strip $(GO_PKG_CUSTOM_LDFLAGS)),)
GO_PKG_INSTALL_ARGS+= -ldflags "$(GO_PKG_CUSTOM_LDFLAGS) $(GO_PKG_DEFAULT_LDFLAGS)"
endif
# false if directory does not exist
GoPackage/is_dir_not_empty=$$$$($(FIND) $(1) -maxdepth 0 -type d \! -empty 2>/dev/null)
GoPackage/has_binaries=$(call GoPackage/is_dir_not_empty,$(GO_PKG_BUILD_BIN_DIR))
define GoPackage/Build/Configure
( \
cd $(PKG_BUILD_DIR) ; \
mkdir -p $(GO_PKG_BUILD_DIR)/bin $(GO_PKG_BUILD_DIR)/src $(GO_PKG_CACHE_DIR) ; \
\
files=$$$$($(FIND) ./ \
-type d -a \( -path './.git' -o -path './$(GO_PKG_WORK_DIR_NAME)' \) -prune -o \
\! -type d -print | \
sed 's|^\./||') ; \
\
if [ "$(strip $(GO_PKG_INSTALL_ALL))" != 1 ]; then \
code=$$$$(echo "$$$$files" | grep '\.\(c\|cc\|cpp\|go\|h\|hh\|hpp\|proto\|s\)$$$$') ; \
testdata=$$$$(echo "$$$$files" | grep '\(^\|/\)testdata/') ; \
gomod=$$$$(echo "$$$$files" | grep '\(^\|/\)go\.\(mod\|sum\)$$$$') ; \
\
for pattern in $(GO_PKG_INSTALL_EXTRA); do \
extra=$$$$(echo "$$$$extra"; echo "$$$$files" | grep "$$$$pattern") ; \
done ; \
\
files=$$$$(echo "$$$$code"; echo "$$$$testdata"; echo "$$$$gomod"; echo "$$$$extra") ; \
files=$$$$(echo "$$$$files" | grep -v '^[[:space:]]*$$$$' | sort -u) ; \
fi ; \
\
IFS=$$$$'\n' ; \
\
echo "Copying files from $(PKG_BUILD_DIR) into $(GO_PKG_BUILD_DIR)/src/$(strip $(GO_PKG))" ; \
for file in $$$$files; do \
echo $$$$file ; \
dest=$(GO_PKG_BUILD_DIR)/src/$(strip $(GO_PKG))/$$$$file ; \
mkdir -p $$$$(dirname $$$$dest) ; \
$(CP) $$$$file $$$$dest ; \
done ; \
echo ; \
\
link_contents() { \
local src=$$$$1 ; \
local dest=$$$$2 ; \
local dirs dir base ; \
\
if [ -n "$$$$($(FIND) $$$$src -mindepth 1 -maxdepth 1 -name '*.go' \! -type d)" ]; then \
echo "$$$$src is already a Go library" ; \
return 1 ; \
fi ; \
\
dirs=$$$$($(FIND) $$$$src -mindepth 1 -maxdepth 1 -type d) ; \
for dir in $$$$dirs; do \
base=$$$$(basename $$$$dir) ; \
if [ -d $$$$dest/$$$$base ]; then \
case $$$$dir in \
*$(GO_PKG_PATH)/src/$(strip $(GO_PKG))) \
echo "$(strip $(GO_PKG)) is already installed. Please check for circular dependencies." ;; \
*) \
link_contents $$$$src/$$$$base $$$$dest/$$$$base ;; \
esac ; \
else \
echo "...$$$${src#$(GO_PKG_BUILD_DEPENDS_SRC)}/$$$$base" ; \
$(LN) $$$$src/$$$$base $$$$dest/$$$$base ; \
fi ; \
done ; \
} ; \
\
if [ "$(strip $(GO_PKG_SOURCE_ONLY))" != 1 ]; then \
if [ -d $(GO_PKG_BUILD_DEPENDS_SRC) ]; then \
echo "Symlinking directories from $(GO_PKG_BUILD_DEPENDS_SRC) into $(GO_PKG_BUILD_DIR)/src" ; \
link_contents $(GO_PKG_BUILD_DEPENDS_SRC) $(GO_PKG_BUILD_DIR)/src ; \
else \
echo "$(GO_PKG_BUILD_DEPENDS_SRC) does not exist, skipping symlinks" ; \
fi ; \
else \
echo "Not building binaries, skipping symlinks" ; \
fi ; \
echo ; \
)
endef
# $(1) additional arguments for go command line (optional)
define GoPackage/Build/Compile
( \
cd $(GO_PKG_BUILD_DIR) ; \
export $(GO_PKG_VARS) ; \
\
echo "Finding targets" ; \
targets=$$$$(go list $(GO_PKG_BUILD_PKG)) ; \
for pattern in $(GO_PKG_EXCLUDES); do \
targets=$$$$(echo "$$$$targets" | grep -v "$$$$pattern") ; \
done ; \
echo ; \
\
if [ "$(strip $(GO_PKG_GO_GENERATE))" = 1 ]; then \
echo "Calling go generate" ; \
go generate -v $(1) $$$$targets ; \
echo ; \
fi ; \
\
if [ "$(strip $(GO_PKG_SOURCE_ONLY))" != 1 ]; then \
echo "Building targets" ; \
go install $(GO_PKG_INSTALL_ARGS) $(1) $$$$targets ; \
retval=$$$$? ; \
echo ; \
\
if [ "$$$$retval" -eq 0 ] && [ -z "$(call GoPackage/has_binaries)" ]; then \
echo "No binaries were generated, consider adding GO_PKG_SOURCE_ONLY:=1 to Makefile" ; \
echo ; \
fi ; \
\
echo "Cleaning module download cache (golang/go#27455)" ; \
go clean -modcache ; \
echo ; \
fi ; \
exit $$$$retval ; \
)
endef
define GoPackage/Build/InstallDev
$(call GoPackage/Package/Install/Src,$(1))
endef
define GoPackage/Package/Install/Bin
if [ -n "$(call GoPackage/has_binaries)" ]; then \
$(INSTALL_DIR) $(1)/usr/bin ; \
$(INSTALL_BIN) $(GO_PKG_BUILD_BIN_DIR)/* $(1)/usr/bin/ ; \
fi
endef
define GoPackage/Package/Install/Src
dir=$$$$(dirname $(GO_PKG)) ; \
$(INSTALL_DIR) $(1)$(GO_PKG_PATH)/src/$$$$dir ; \
$(CP) $(GO_PKG_BUILD_DIR)/src/$(strip $(GO_PKG)) $(1)$(GO_PKG_PATH)/src/$$$$dir/
endef
define GoPackage/Package/Install
$(call GoPackage/Package/Install/Bin,$(1))
$(call GoPackage/Package/Install/Src,$(1))
endef
ifneq ($(strip $(GO_PKG)),)
Build/Configure=$(call GoPackage/Build/Configure)
Build/Compile=$(call GoPackage/Build/Compile)
Build/InstallDev=$(call GoPackage/Build/InstallDev,$(1))
endif
define GoPackage
ifndef Package/$(1)/install
Package/$(1)/install=$$(call GoPackage/Package/Install,$$(1))
endif
endef
define GoBinPackage
ifndef Package/$(1)/install
Package/$(1)/install=$$(call GoPackage/Package/Install/Bin,$$(1))
endif
endef
define GoSrcPackage
ifndef Package/$(1)/install
Package/$(1)/install=$$(call GoPackage/Package/Install/Src,$$(1))
endif
endef