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384 lines
11 KiB
384 lines
11 KiB
#
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# Copyright (C) 2018-2020 Jeffery To
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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ifeq ($(origin GO_INCLUDE_DIR),undefined)
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GO_INCLUDE_DIR:=$(dir $(lastword $(MAKEFILE_LIST)))
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endif
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include $(GO_INCLUDE_DIR)/golang-values.mk
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# Variables (all optional, except GO_PKG) to be set in package
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# Makefiles:
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#
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# GO_PKG (required) - name of Go package
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#
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# Go name of the package.
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#
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# e.g. GO_PKG:=golang.org/x/text
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#
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#
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# GO_PKG_INSTALL_EXTRA - list of regular expressions, default empty
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#
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# Additional files/directories to install. By default, only these
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# files are installed:
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#
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# * Files with one of these extensions:
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# .go, .c, .cc, .cpp, .h, .hh, .hpp, .proto, .s
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#
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# * Files in any 'testdata' directory
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#
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# * go.mod and go.sum, in any directory
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#
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# e.g. GO_PKG_INSTALL_EXTRA:=example.toml marshal_test.toml
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#
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#
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# GO_PKG_INSTALL_ALL - boolean (0 or 1), default false
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#
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# If true, install all files regardless of extension or directory.
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#
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# e.g. GO_PKG_INSTALL_ALL:=1
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#
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#
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# GO_PKG_SOURCE_ONLY - boolean (0 or 1), default false
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#
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# If true, 'go install' will not be called. If the package does not
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# (or should not) build any binaries, then specifying this option will
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# save build time.
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#
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# e.g. GO_PKG_SOURCE_ONLY:=1
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#
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#
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# GO_PKG_BUILD_PKG - list of build targets, default GO_PKG/...
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#
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# Build targets for compiling this Go package, i.e. arguments passed
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# to 'go install'.
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#
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# e.g. GO_PKG_BUILD_PKG:=github.com/debian/ratt/cmd/...
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#
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#
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# GO_PKG_EXCLUDES - list of regular expressions, default empty
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#
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# Patterns to exclude from the build targets expanded from
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# GO_PKG_BUILD_PKG.
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#
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# e.g. GO_PKG_EXCLUDES:=examples/
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#
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#
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# GO_PKG_GO_GENERATE - boolean (0 or 1), default false
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#
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# If true, 'go generate' will be called on all build targets (as
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# determined by GO_PKG_BUILD_PKG and GO_PKG_EXCLUDES). This is usually
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# not necessary.
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#
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# e.g. GO_PKG_GO_GENERATE:=1
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#
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#
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# GO_PKG_GCFLAGS - list of options, default empty
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#
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# Additional go tool compile options to use when building targets.
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#
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# e.g. GO_PKG_GCFLAGS:=-N -l
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#
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#
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# GO_PKG_LDFLAGS - list of options, default empty
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#
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# Additional go tool link options to use when building targets.
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#
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# Note that the OpenWrt build system has an option to strip binaries
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# (enabled by default), so -s (Omit the symbol table and debug
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# information) and -w (Omit the DWARF symbol table) flags are not
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# necessary.
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#
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# e.g. GO_PKG_LDFLAGS:=-r dir1:dir2 -u
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#
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#
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# GO_PKG_LDFLAGS_X - list of string variable definitions, default empty
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#
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# Each definition will be passed as the parameter to the -X go tool
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# link option, i.e. -ldflags "-X importpath.name=value".
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#
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# e.g. GO_PKG_LDFLAGS_X:=main.Version=$(PKG_VERSION) main.BuildStamp=$(SOURCE_DATE_EPOCH)
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#
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#
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# GO_PKG_TAGS - list of build tags, default empty
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#
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# Build tags to consider satisfied during the build, passed as the
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# parameter to the -tags option for 'go install'.
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#
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# e.g. GO_PKG_TAGS:=release,noupgrade
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# Credit for this package build process (GoPackage/Build/Configure and
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# GoPackage/Build/Compile) belong to Debian's dh-golang completely.
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# https://salsa.debian.org/go-team/packages/dh-golang
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# for building packages, not user code
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GO_PKG_PATH:=/usr/share/gocode
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GO_PKG_BUILD_PKG?=$(strip $(GO_PKG))/...
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GO_PKG_WORK_DIR_NAME:=.go_work
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GO_PKG_WORK_DIR=$(PKG_BUILD_DIR)/$(GO_PKG_WORK_DIR_NAME)
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GO_PKG_BUILD_DIR=$(GO_PKG_WORK_DIR)/build
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GO_PKG_CACHE_DIR=$(GO_PKG_WORK_DIR)/cache
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GO_PKG_BUILD_BIN_DIR=$(GO_PKG_BUILD_DIR)/bin$(if $(GO_HOST_TARGET_DIFFERENT),/$(GO_OS_ARCH))
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GO_PKG_BUILD_DEPENDS_SRC=$(STAGING_DIR)$(GO_PKG_PATH)/src
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ifdef CONFIG_PKG_ASLR_PIE_ALL
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ifeq ($(strip $(PKG_ASLR_PIE)),1)
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ifeq ($(GO_TARGET_PIE_SUPPORTED),1)
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GO_PKG_ENABLE_PIE:=1
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else
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$(warning PIE buildmode is not supported for $(GO_OS)/$(GO_ARCH))
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endif
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endif
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endif
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ifdef CONFIG_PKG_ASLR_PIE_REGULAR
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ifeq ($(strip $(PKG_ASLR_PIE_REGULAR)),1)
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ifeq ($(GO_TARGET_PIE_SUPPORTED),1)
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GO_PKG_ENABLE_PIE:=1
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else
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$(warning PIE buildmode is not supported for $(GO_OS)/$(GO_ARCH))
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endif
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endif
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endif
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# sstrip causes corrupted section header size
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ifneq ($(CONFIG_USE_SSTRIP),)
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ifneq ($(CONFIG_DEBUG),)
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GO_PKG_STRIP_ARGS:=--strip-unneeded --remove-section=.comment --remove-section=.note
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else
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GO_PKG_STRIP_ARGS:=--strip-all
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endif
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STRIP:=$(TARGET_CROSS)strip $(GO_PKG_STRIP_ARGS)
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endif
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define GoPackage/GoSubMenu
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SUBMENU:=Go
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SECTION:=lang
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CATEGORY:=Languages
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endef
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GO_PKG_TARGET_VARS= \
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GOOS=$(GO_OS) \
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GOARCH=$(GO_ARCH) \
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GO386=$(GO_386) \
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GOARM=$(GO_ARM) \
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GOMIPS=$(GO_MIPS) \
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GOMIPS64=$(GO_MIPS64) \
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CGO_ENABLED=1 \
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CC=$(TARGET_CC) \
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CXX=$(TARGET_CXX) \
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CGO_CFLAGS="$(filter-out $(GO_CFLAGS_TO_REMOVE),$(TARGET_CFLAGS))" \
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CGO_CPPFLAGS="$(TARGET_CPPFLAGS)" \
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CGO_CXXFLAGS="$(filter-out $(GO_CFLAGS_TO_REMOVE),$(TARGET_CXXFLAGS))" \
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CGO_LDFLAGS="$(TARGET_LDFLAGS)"
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GO_PKG_BUILD_VARS= \
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GOPATH=$(GO_PKG_BUILD_DIR) \
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GOCACHE=$(GO_PKG_CACHE_DIR) \
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GOENV=off
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GO_PKG_DEFAULT_VARS= \
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$(GO_PKG_TARGET_VARS) \
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$(GO_PKG_BUILD_VARS)
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GO_PKG_VARS=$(GO_PKG_DEFAULT_VARS)
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# do not use for new code; this will be removed after the next OpenWrt release
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GoPackage/Environment=$(GO_PKG_VARS)
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GO_PKG_DEFAULT_LDFLAGS= \
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-buildid '$(SOURCE_DATE_EPOCH)' \
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-linkmode external \
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-extldflags '$(patsubst -z%,-Wl$(comma)-z$(comma)%,$(TARGET_LDFLAGS))'
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GO_PKG_CUSTOM_LDFLAGS= \
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$(GO_PKG_LDFLAGS) \
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$(patsubst %,-X %,$(GO_PKG_LDFLAGS_X))
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GO_PKG_INSTALL_ARGS= \
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-v \
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-trimpath \
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-ldflags "all=$(GO_PKG_DEFAULT_LDFLAGS)" \
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$(if $(filter $(GO_PKG_ENABLE_PIE),1),-buildmode pie) \
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$(if $(filter $(GO_ARCH),arm),-installsuffix "v$(GO_ARM)") \
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$(if $(filter $(GO_ARCH),mips mipsle),-installsuffix "$(GO_MIPS)") \
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$(if $(filter $(GO_ARCH),mips64 mips64le),-installsuffix "$(GO_MIPS64)") \
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$(if $(GO_PKG_GCFLAGS),-gcflags "$(GO_PKG_GCFLAGS)") \
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$(if $(GO_PKG_CUSTOM_LDFLAGS),-ldflags "$(GO_PKG_CUSTOM_LDFLAGS) $(GO_PKG_DEFAULT_LDFLAGS)") \
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$(if $(GO_PKG_TAGS),-tags "$(GO_PKG_TAGS)")
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# false if directory does not exist
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GoPackage/is_dir_not_empty=$$$$($(FIND) $(1) -maxdepth 0 -type d \! -empty 2>/dev/null)
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GoPackage/has_binaries=$(call GoPackage/is_dir_not_empty,$(GO_PKG_BUILD_BIN_DIR))
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define GoPackage/Build/Configure
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( \
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cd $(PKG_BUILD_DIR) ; \
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mkdir -p $(GO_PKG_BUILD_DIR)/bin $(GO_PKG_BUILD_DIR)/src $(GO_PKG_CACHE_DIR) ; \
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\
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files=$$$$($(FIND) ./ \
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-type d -a \( -path './.git' -o -path './$(GO_PKG_WORK_DIR_NAME)' \) -prune -o \
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\! -type d -print | \
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sed 's|^\./||') ; \
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\
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if [ "$(strip $(GO_PKG_INSTALL_ALL))" != 1 ]; then \
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code=$$$$(echo "$$$$files" | grep '\.\(c\|cc\|cpp\|go\|h\|hh\|hpp\|proto\|s\)$$$$') ; \
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testdata=$$$$(echo "$$$$files" | grep '\(^\|/\)testdata/') ; \
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gomod=$$$$(echo "$$$$files" | grep '\(^\|/\)go\.\(mod\|sum\)$$$$') ; \
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\
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for pattern in $(GO_PKG_INSTALL_EXTRA); do \
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extra=$$$$(echo "$$$$extra"; echo "$$$$files" | grep "$$$$pattern") ; \
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done ; \
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\
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files=$$$$(echo "$$$$code"; echo "$$$$testdata"; echo "$$$$gomod"; echo "$$$$extra") ; \
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files=$$$$(echo "$$$$files" | grep -v '^[[:space:]]*$$$$' | sort -u) ; \
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fi ; \
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\
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IFS=$$$$'\n' ; \
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\
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echo "Copying files from $(PKG_BUILD_DIR) into $(GO_PKG_BUILD_DIR)/src/$(strip $(GO_PKG))" ; \
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for file in $$$$files; do \
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echo $$$$file ; \
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dest=$(GO_PKG_BUILD_DIR)/src/$(strip $(GO_PKG))/$$$$file ; \
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mkdir -p $$$$(dirname $$$$dest) ; \
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$(CP) $$$$file $$$$dest ; \
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done ; \
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echo ; \
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\
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link_contents() { \
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local src=$$$$1 ; \
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local dest=$$$$2 ; \
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local dirs dir base ; \
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\
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if [ -n "$$$$($(FIND) $$$$src -mindepth 1 -maxdepth 1 -name '*.go' \! -type d)" ]; then \
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echo "$$$$src is already a Go library" ; \
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return 1 ; \
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fi ; \
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\
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dirs=$$$$($(FIND) $$$$src -mindepth 1 -maxdepth 1 -type d) ; \
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for dir in $$$$dirs; do \
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base=$$$$(basename $$$$dir) ; \
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if [ -d $$$$dest/$$$$base ]; then \
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case $$$$dir in \
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*$(GO_PKG_PATH)/src/$(strip $(GO_PKG))) \
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echo "$(strip $(GO_PKG)) is already installed. Please check for circular dependencies." ;; \
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*) \
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link_contents $$$$src/$$$$base $$$$dest/$$$$base ;; \
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esac ; \
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else \
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echo "...$$$${src#$(GO_PKG_BUILD_DEPENDS_SRC)}/$$$$base" ; \
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$(LN) $$$$src/$$$$base $$$$dest/$$$$base ; \
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fi ; \
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done ; \
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} ; \
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\
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if [ "$(strip $(GO_PKG_SOURCE_ONLY))" != 1 ]; then \
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if [ -d $(GO_PKG_BUILD_DEPENDS_SRC) ]; then \
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echo "Symlinking directories from $(GO_PKG_BUILD_DEPENDS_SRC) into $(GO_PKG_BUILD_DIR)/src" ; \
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link_contents $(GO_PKG_BUILD_DEPENDS_SRC) $(GO_PKG_BUILD_DIR)/src ; \
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else \
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echo "$(GO_PKG_BUILD_DEPENDS_SRC) does not exist, skipping symlinks" ; \
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fi ; \
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else \
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echo "Not building binaries, skipping symlinks" ; \
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fi ; \
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echo ; \
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)
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endef
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# $(1) additional arguments for go command line (optional)
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define GoPackage/Build/Compile
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( \
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cd $(GO_PKG_BUILD_DIR) ; \
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export $(GO_PKG_VARS) ; \
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\
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echo "Finding targets" ; \
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targets=$$$$(go list $(GO_PKG_BUILD_PKG)) ; \
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for pattern in $(GO_PKG_EXCLUDES); do \
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targets=$$$$(echo "$$$$targets" | grep -v "$$$$pattern") ; \
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done ; \
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echo ; \
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\
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if [ "$(strip $(GO_PKG_GO_GENERATE))" = 1 ]; then \
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echo "Calling go generate" ; \
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go generate -v $(1) $$$$targets ; \
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echo ; \
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fi ; \
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\
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if [ "$(strip $(GO_PKG_SOURCE_ONLY))" != 1 ]; then \
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echo "Building targets" ; \
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go install $(GO_PKG_INSTALL_ARGS) $(1) $$$$targets ; \
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retval=$$$$? ; \
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echo ; \
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\
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if [ "$$$$retval" -eq 0 ] && [ -z "$(call GoPackage/has_binaries)" ]; then \
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echo "No binaries were generated, consider adding GO_PKG_SOURCE_ONLY:=1 to Makefile" ; \
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echo ; \
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fi ; \
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\
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echo "Cleaning module download cache (golang/go#27455)" ; \
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go clean -modcache ; \
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echo ; \
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fi ; \
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exit $$$$retval ; \
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)
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endef
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define GoPackage/Build/InstallDev
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$(call GoPackage/Package/Install/Src,$(1))
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endef
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define GoPackage/Package/Install/Bin
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if [ -n "$(call GoPackage/has_binaries)" ]; then \
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$(INSTALL_DIR) $(1)/usr/bin ; \
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$(INSTALL_BIN) $(GO_PKG_BUILD_BIN_DIR)/* $(1)/usr/bin/ ; \
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fi
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endef
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define GoPackage/Package/Install/Src
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dir=$$$$(dirname $(GO_PKG)) ; \
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$(INSTALL_DIR) $(1)$(GO_PKG_PATH)/src/$$$$dir ; \
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$(CP) $(GO_PKG_BUILD_DIR)/src/$(strip $(GO_PKG)) $(1)$(GO_PKG_PATH)/src/$$$$dir/
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endef
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define GoPackage/Package/Install
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$(call GoPackage/Package/Install/Bin,$(1))
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$(call GoPackage/Package/Install/Src,$(1))
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endef
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ifneq ($(strip $(GO_PKG)),)
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Build/Configure=$(call GoPackage/Build/Configure)
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Build/Compile=$(call GoPackage/Build/Compile)
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Build/InstallDev=$(call GoPackage/Build/InstallDev,$(1))
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endif
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define GoPackage
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ifndef Package/$(1)/install
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Package/$(1)/install=$$(call GoPackage/Package/Install,$$(1))
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endif
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endef
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define GoBinPackage
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ifndef Package/$(1)/install
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Package/$(1)/install=$$(call GoPackage/Package/Install/Bin,$$(1))
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endif
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endef
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define GoSrcPackage
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ifndef Package/$(1)/install
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Package/$(1)/install=$$(call GoPackage/Package/Install/Src,$$(1))
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endif
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endef
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