8539378771
The default currently is to rely on the package name to decide what to build and install if not specified by the caller. This works nice for target packages, where a 'foo' package will by default build and install a 'foo' executable. However, for host packages, that will build and install a 'host-foo' exzcutable, which is not really, even really not, what would be expected. We fix that by using the package raw name, i.e. the package name with the host- prefix yanked away. It is very improbable that there already are many host-golang packages in the wild (in br2-external trees), but if there are, they would forcibly define those variables to a sane value. This change is not incompatible, as the values provided by packages take precedence; it's just that those packages now carry superfluous, if innocuous, variable assignments. Signed-off-by: Yann E. MORIN <yann.morin@orange.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
162 lines
5.4 KiB
Makefile
162 lines
5.4 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 $$(PARALLEL_JOBS)
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# Target packages need the Go compiler on the host at download time (for
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# vendoring), and at build and install time.
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$(2)_DOWNLOAD_DEPENDENCIES += host-go
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$(2)_DEPENDENCIES += host-go
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$(2)_BUILD_TARGETS ?= .
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# If the build target is just ".", then we assume the binary to be
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# produced is named after the package. If however, a build target has
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# been specified, we assume that the binaries to be produced are named
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# after each build target building them (below in <pkg>_BUILD_CMDS).
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ifeq ($$($(2)_BUILD_TARGETS),.)
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$(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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$$(HOST_GO_COMMON_ENV) \
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GOPROXY=direct
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# Due to vendoring, it is pretty likely that not all licenses are
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# listed in <pkg>_LICENSE.
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$(2)_LICENSE += , vendored dependencies licenses probably not listed
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# Build step. Only define it if not already defined by the package .mk
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# file.
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ifndef $(2)_BUILD_CMDS
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ifeq ($(4),target)
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ifeq ($(BR2_STATIC_LIBS),y)
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$(2)_LDFLAGS += -extldflags '-static'
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endif
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# Build package for target
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define $(2)_BUILD_CMDS
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$$(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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