838a269b87
Go forces use of the Gold linker on aarch64 due to a bug in BFD that is fixed in Binutils >= 2.41 (that includes all versions provided by Buildroot). Forcing Gold will break with toolchains that don't provide it (like the Buildroot toolchains), so override the flag and use BFD. This override should be removed if Go stops forcing Gold, and may have to be adapted if the set of available linkers changes (e.g. with a future Binutils update). See: https://github.com/golang/go/issues/22040 Fixes: http://autobuild.buildroot.org/results/a59/a59bc999e9620ff6b9d97138a2de898aadc07529 Signed-off-by: Fiona Klute (WIWA) <fiona.klute@gmx.de> Reviewed-by: Yann E. MORIN <yann.morin@orange.com> [Romain: add autobuild reference] Signed-off-by: Romain Naour <romain.naour@smile.fr>
192 lines
6.4 KiB
Makefile
192 lines
6.4 KiB
Makefile
################################################################################
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# Golang package infrastructure
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#
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# This file implements an infrastructure that eases development of package .mk
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# files for Go packages. It should be used for all packages that are written in
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# go.
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#
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# See the Buildroot documentation for details on the usage of this
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# infrastructure
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#
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#
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# In terms of implementation, this golang infrastructure requires the .mk file
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# to only specify metadata information about the package: name, version,
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# download URL, etc.
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#
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# We still allow the package .mk file to override what the different steps are
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# doing, if needed. For example, if <PKG>_BUILD_CMDS is already defined, it is
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# used as the list of commands to perform to build the package, instead of the
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# default golang behavior. The package can also define some post operation
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# hooks.
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#
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################################################################################
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GO_BIN = $(HOST_DIR)/bin/go
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################################################################################
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# inner-golang-package -- defines how the configuration, compilation and
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# installation of a Go package should be done, implements a few hooks to tune
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# the build process for Go specificities and calls the generic package
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# infrastructure to generate the necessary make targets
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#
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# argument 1 is the lowercase package name
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# argument 2 is the uppercase package name, including a HOST_ prefix for host
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# packages
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# argument 3 is the uppercase package name, without the HOST_ prefix for host
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# packages
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# argument 4 is the type (target or host)
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#
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################################################################################
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define inner-golang-package
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$(2)_BUILD_OPTS += \
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-ldflags "$$($(2)_LDFLAGS)" \
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-modcacherw \
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-tags "$$($(2)_TAGS)" \
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-trimpath \
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-p $$(PARALLEL_JOBS) \
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-buildvcs=false
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# Target packages need the Go compiler on the host at download time (for
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# vendoring), and at build and install time.
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$(2)_DOWNLOAD_DEPENDENCIES += host-go
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$(2)_DEPENDENCIES += host-go
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$(2)_BUILD_TARGETS ?= .
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# If the build target is just ".", then we assume the binary to be
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# produced is named after the package. If however, a build target has
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# been specified, we assume that the binaries to be produced are named
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# after each build target building them (below in <pkg>_BUILD_CMDS).
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ifeq ($$($(2)_BUILD_TARGETS),.)
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$(2)_BIN_NAME ?= $$($(2)_RAWNAME)
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endif
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$(2)_INSTALL_BINS ?= $$($(2)_RAWNAME)
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# Source files in Go usually use an import path resolved around
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# domain/vendor/software. We infer domain/vendor/software from the upstream URL
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# of the project.
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$(2)_SRC_DOMAIN = $$(call domain,$$($(2)_SITE))
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$(2)_SRC_VENDOR = $$(word 1,$$(subst /, ,$$(call notdomain,$$($(2)_SITE))))
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$(2)_SRC_SOFTWARE = $$(word 2,$$(subst /, ,$$(call notdomain,$$($(2)_SITE))))
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# $(2)_GOMOD is the root Go module path for the project, inferred if not set.
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# If the go.mod file does not exist, one is written with this root path.
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$(2)_GOMOD ?= $$($(2)_SRC_DOMAIN)/$$($(2)_SRC_VENDOR)/$$($(2)_SRC_SOFTWARE)
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# Generate a go.mod file if it doesn't exist. Note: Go is configured
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# to use the "vendor" dir and not make network calls.
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define $(2)_GEN_GOMOD
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if [ ! -f $$(@D)/go.mod ]; then \
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printf "module $$($(2)_GOMOD)\n" > $$(@D)/go.mod; \
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fi
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endef
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$(2)_POST_PATCH_HOOKS += $(2)_GEN_GOMOD
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$(2)_DOWNLOAD_POST_PROCESS = go
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$(2)_DL_ENV += \
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$$(HOST_GO_COMMON_ENV) \
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GOPROXY=direct \
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$$($(2)_GO_ENV)
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# Because we append vendored info, we can't rely on the values being empty
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# once we eventually get into the generic-package infra. So, we duplicate
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# the heuristics here
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ifndef $(2)_LICENSE
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ifdef $(3)_LICENSE
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$(2)_LICENSE = $$($(3)_LICENSE)
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endif
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endif
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# Due to vendoring, it is pretty likely that not all licenses are
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# listed in <pkg>_LICENSE. If the license is unset, it is "unknown"
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# so adding unknowns to some unknown is still some other unknown,
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# so don't append the blurb in that case.
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ifneq ($$($(2)_LICENSE),)
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$(2)_LICENSE += , vendored dependencies licenses probably not listed
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endif
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# Build step. Only define it if not already defined by the package .mk
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# file.
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ifndef $(2)_BUILD_CMDS
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ifeq ($(4),target)
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ifeq ($(BR2_STATIC_LIBS),y)
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$(2)_EXTLDFLAGS += -static
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$(2)_TAGS += osusergo netgo
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endif
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ifeq ($(BR2_aarch64),y)
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# Go forces use of the Gold linker on aarch64 due to a bug in BFD that
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# is fixed in Binutils >= 2.41 (that includes all versions provided by
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# Buildroot). Forcing Gold will break with toolchains that don't
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# provide it (like the Buildroot toolchains), so override the flag and
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# use BFD.
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# See: https://github.com/golang/go/issues/22040
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$(2)_EXTLDFLAGS += -fuse-ld=bfd
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endif
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ifneq ($$($(2)_EXTLDFLAGS),)
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$(2)_LDFLAGS += -extldflags '$$($(2)_EXTLDFLAGS)'
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endif
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# Build package for target
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define $(2)_BUILD_CMDS
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$$(foreach d,$$($(2)_BUILD_TARGETS),\
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cd $$(@D); \
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$$(HOST_GO_TARGET_ENV) \
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$$($(2)_GO_ENV) \
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$$(GO_BIN) build -v $$($(2)_BUILD_OPTS) \
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-o $$(@D)/bin/$$(or $$($(2)_BIN_NAME),$$(notdir $$(d))) \
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$$($(2)_GOMOD)/$$(d)
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)
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endef
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else
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# Build package for host
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define $(2)_BUILD_CMDS
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$$(foreach d,$$($(2)_BUILD_TARGETS),\
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cd $$(@D); \
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$$(HOST_GO_HOST_ENV) \
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$$($(2)_GO_ENV) \
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$$(GO_BIN) build -v $$($(2)_BUILD_OPTS) \
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-o $$(@D)/bin/$$(or $$($(2)_BIN_NAME),$$(notdir $$(d))) \
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$$($(2)_GOMOD)/$$(d)
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)
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endef
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endif
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endif
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# Target installation step. Only define it if not already defined by the
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# package .mk file.
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ifndef $(2)_INSTALL_TARGET_CMDS
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define $(2)_INSTALL_TARGET_CMDS
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$$(foreach d,$$($(2)_INSTALL_BINS),\
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$$(INSTALL) -D -m 0755 $$(@D)/bin/$$(d) $$(TARGET_DIR)/usr/bin/$$(d)
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)
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endef
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endif
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# Host installation step
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ifndef $(2)_INSTALL_CMDS
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define $(2)_INSTALL_CMDS
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$$(foreach d,$$($(2)_INSTALL_BINS),\
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$$(INSTALL) -D -m 0755 $$(@D)/bin/$$(d) $$(HOST_DIR)/bin/$$(d)
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)
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endef
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endif
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# Call the generic package infrastructure to generate the necessary make
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# targets
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$(call inner-generic-package,$(1),$(2),$(3),$(4))
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endef # inner-golang-package
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################################################################################
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# golang-package -- the target generator macro for Go packages
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################################################################################
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golang-package = $(call inner-golang-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)
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host-golang-package = $(call inner-golang-package,host-$(pkgname),$(call UPPERCASE,host-$(pkgname)),$(call UPPERCASE,$(pkgname)),host)
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