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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 $(GO_INCLUDE_DIR)/golang-version.mk
unexport \
GOARCH GOBIN GOCACHE GODEBUG GOHOSTARCH GOOS GOPATH GORACE GOROOT GOTMPDIR GCCGO \
CGO_ENABLED \
CGO_CFLAGS CGO_CFLAGS_ALLOW CGO_CFLAGS_DISALLOW \
CGO_CPPFLAGS CGO_CPPFLAGS_ALLOW CGO_CPPFLAGS_DISALLOW \
CGO_CXXFLAGS CGO_CXXFLAGS_ALLOW CGO_CXXFLAGS_DISALLOW \
CGO_FFLAGS CGO_FFLAGS_ALLOW CGO_FFLAGS_DISALLOW \
CGO_LDFLAGS CGO_LDFLAGS_ALLOW CGO_LDFLAGS_DISALLOW \
GOARM GO386 GOMIPS \
GOROOT_FINAL GO_EXTLINK_ENABLED GIT_ALLOW_PROTOCOL \
CC_FOR_TARGET CXX_FOR_TARGET GO_DISTFLAGS GO_GCFLAGS GO_LDFLAGS GOBUILDTIMELOGFILE GOROOT_BOOTSTRAP \
BOOT_GO_GCFLAGS GOEXPERIMENT GOBOOTSTRAP_TOOLEXEC
# there are more magic environment variables to track down, but ain't nobody got time for that
go_arch=$(subst \
aarch64,arm64,$(subst \
i386,386,$(subst \
mipsel,mipsle,$(subst \
mips64el,mips64le,$(subst \
powerpc64,ppc64,$(subst \
x86_64,amd64,$(1)))))))
GO_OS:=linux
GO_ARCH:=$(call go_arch,$(ARCH))
GO_OS_ARCH:=$(GO_OS)_$(GO_ARCH)
GO_HOST_OS:=$(call tolower,$(HOST_OS))
GO_HOST_ARCH:=$(call go_arch,$(subst \
armv6l,arm,$(subst \
armv7l,arm,$(subst \
i486,i386,$(subst \
i586,i386,$(subst \
i686,i386,$(HOST_ARCH)))))))
GO_HOST_OS_ARCH:=$(GO_HOST_OS)_$(GO_HOST_ARCH)
GO_HOST_TARGET_SAME:=$(if $(and $(findstring $(GO_OS_ARCH),$(GO_HOST_OS_ARCH)),$(findstring $(GO_HOST_OS_ARCH),$(GO_OS_ARCH))),1)
GO_HOST_TARGET_DIFFERENT:=$(if $(GO_HOST_TARGET_SAME),,1)
# ensure binaries can run on older CPUs
GO_386:=387
GO_ARM:=$(if $(CONFIG_arm_v7),7,$(if $(CONFIG_arm_v6),6,$(if $(findstring $(GO_ARCH),arm),5,)))
GO_MIPS:=$(if $(filter $(GO_ARCH),mips mipsle),$(if $(CONFIG_HAS_FPU),hardfloat,softfloat),)
# -fno-plt: causes "unexpected GOT reloc for non-dynamic symbol" errors
# -mips32r2: conflicts with -march=mips32 set by go
GO_CFLAGS_TO_REMOVE:=$(if \
$(filter $(GO_ARCH),386),-fno-plt,$(if \
$(filter $(GO_ARCH),mips mipsle),-mips32r2,))
# mips64 / mips64el doesn't have softfloat support yet
# https://github.com/golang/go/issues/14635
GO_ARCH_DEPENDS:=@(aarch64||arm||i386||i686||mips||mipsel||powerpc64||x86_64)
GO_TARGET_PREFIX:=/usr
GO_TARGET_VERSION_ID:=$(GO_VERSION_MAJOR_MINOR)
GO_TARGET_ROOT:=$(GO_TARGET_PREFIX)/lib/go-$(GO_TARGET_VERSION_ID)