From mboxrd@z Thu Jan 1 00:00:00 1970 From: Angelo Compagnucci Date: Thu, 5 Oct 2017 14:40:58 +0200 Subject: [Buildroot] [RFC 2/4] package/pkg-golang: new package infrastructure In-Reply-To: <1507207260-26734-1-git-send-email-angelo.compagnucci@gmail.com> References: <1507207260-26734-1-git-send-email-angelo.compagnucci@gmail.com> Message-ID: <1507207260-26734-2-git-send-email-angelo.compagnucci@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net This patch adds a new infrastructure for golang based packages. Signed-off-by: Angelo Compagnucci --- package/Makefile.in | 1 + package/pkg-golang.mk | 121 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 122 insertions(+) create mode 100644 package/pkg-golang.mk diff --git a/package/Makefile.in b/package/Makefile.in index a1a5316..60d98d0 100644 --- a/package/Makefile.in +++ b/package/Makefile.in @@ -429,3 +429,4 @@ include package/pkg-kconfig.mk include package/pkg-rebar.mk include package/pkg-kernel-module.mk include package/pkg-waf.mk +include package/pkg-golang.mk diff --git a/package/pkg-golang.mk b/package/pkg-golang.mk new file mode 100644 index 0000000..c4e6410 --- /dev/null +++ b/package/pkg-golang.mk @@ -0,0 +1,121 @@ +################################################################################ +# Golang package infrastructure +# +# This file implements an infrastructure that eases development of +# package .mk files for Go packages. It should be used for all +# packages that are written in go. +# +# See the Buildroot documentation for details on the usage of this +# infrastructure +# +# +# In terms of implementation, this golang infrastructure requires +# the .mk file to only specify metadata information about the +# package: name, version, download URL, etc. +# +# We still allow the package .mk file to override what the different +# steps are doing, if needed. For example, if _BUILD_CMDS is +# already defined, it is used as the list of commands to perform to +# build the package, instead of the default golang behaviour. The +# package can also define some post operation hooks. +# +################################################################################ + +################################################################################ +# inner-golang-package -- defines how the configuration, compilation and +# installation of a Go package should be done, implements a few hooks to +# tune the build process for Go specifities and calls the generic package +# infrastructure to generate the necessary make targets +# +# argument 1 is the lowercase package name +# argument 2 is the uppercase package name, including a HOST_ prefix +# for host packages +# argument 3 is the uppercase package name, without the HOST_ prefix +# for host packages +# argument 4 is the type (target or host) +################################################################################ + +define inner-golang-package + +ifndef $(2)_MAKE_ENV +define $(2)_MAKE_ENV + $$(HOST_GO_TARGET_ENV) \ + GOPATH="$$(@D)/gopath" \ + CGO_ENABLED=$$(HOST_GO_CGO_ENABLED) +endef +endif + +# Target packages need the Go compiler on the host. +$(2)_DEPENDENCIES += host-go + +# +# go install command doesn't work well when cross compilation is enabled, +# we set the executable output of the compilation to a specific location. +# We set this variable here to be used by packages if needed. +# +$(2)_EXECUTABLE = $$(@D)/gopath/bin/$(1) + +# +# Source files in Go should be uncompressed in a precise folder in the +# hiearchy of GOPATH. It usually resolves around domain/vendor/software. +# +$(1)_src_path ?= $$(call domain,$($(2)_SITE))/$$(firstword $$(subst /, ,$$(call notdomain,$($(2)_SITE)))) +$(2)_SRC_PATH = $$(@D)/gopath/src/$$($(1)_src_path)/$(1) + +# +# Configure step. Only define it if not already defined by the package +# .mk file. And take care of the differences between host and target +# packages. +# +ifndef $(2)_CONFIGURE_CMDS +define $(2)_CONFIGURE_CMDS + mkdir -p $$(@D)/gopath/bin + mkdir -p $$(@D)/gopath/src/$$($(1)_src_path) + ln -sf $$(@D) $$($(2)_SRC_PATH) +endef +endif + +# +# Build step. Only define it if not already defined by the package .mk file. +# There is no differences between host and target packages. +# +ifndef $(2)_BUILD_CMDS +define $(2)_BUILD_CMDS + cd $$($(2)_SRC_PATH) && $$($(2)_MAKE_ENV) $(HOST_DIR)/bin/go build \ + -o $$($(2)_EXECUTABLE) -v $$($(2)_BUILD_OPTS) +endef +endif + +# +# Host installation step. Only define it if not already defined by the +# package .mk file. +# +ifndef $(2)_INSTALL_CMDS +define $(2)_INSTALL_CMDS + $(INSTALL) -D -m 0755 $$($(2)_EXECUTABLE) $(HOST_DIR)/usr/bin/ +endef +endif + +# +# Target installation step. Only define it if not already defined by the +# package .mk file. +# +ifndef $(2)_INSTALL_TARGET_CMDS +define $(2)_INSTALL_TARGET_CMDS + $(INSTALL) -D -m 0755 $$($(2)_EXECUTABLE) $(TARGET_DIR)/usr/bin/ +endef +endif + +# Call the generic package infrastructure to generate the necessary make +# targets +$(call inner-generic-package,$(1),$(2),$(3),$(4)) + +endef # inner-golang-package + +################################################################################ +# golang-package -- the target generator macro for Go packages +################################################################################ + +golang-package = $(call inner-golang-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target) +host-golang-package = $(call inner-golang-package,host-$(pkgname),$(call UPPERCASE,host-$(pkgname)),$(call UPPERCASE,$(pkgname)),host) + -- 2.7.4