lang/golang/golang-values.mk

   1 #
   2 # Copyright (C) 2018-2023 Jeffery To
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7
   8 ifeq ($(origin GO_INCLUDE_DIR),undefined)
   9   GO_INCLUDE_DIR:=$(dir $(lastword $(MAKEFILE_LIST)))
  10 endif
  11
  12
  13 # Unset environment variables
  14 # There are more magic variables to track down, but ain't nobody got time for that
  15
  16 # From https://pkg.go.dev/cmd/go#hdr-Environment_variables
  17
  18 # General-purpose environment variables:
  19 unexport \
  20   GO111MODULE \
  21   GCCGO \
  22   GOARCH \
  23   GOBIN \
  24   GOCACHE \
  25   GOMODCACHE \
  26   GODEBUG \
  27   GOENV \
  28   GOFLAGS \
  29   GOOS \
  30   GOPATH \
  31   GOROOT \
  32   GOTOOLCHAIN \
  33   GOTMPDIR \
  34   GOWORK
  35 # Unmodified:
  36 #   GOINSECURE
  37 #   GOPRIVATE
  38 #   GOPROXY
  39 #   GONOPROXY
  40 #   GOSUMDB
  41 #   GONOSUMDB
  42 #   GOVCS
  43
  44 # Environment variables for use with cgo:
  45 unexport \
  46   AR \
  47   CC \
  48   CGO_ENABLED \
  49   CGO_CFLAGS   CGO_CFLAGS_ALLOW   CGO_CFLAGS_DISALLOW \
  50   CGO_CPPFLAGS CGO_CPPFLAGS_ALLOW CGO_CPPFLAGS_DISALLOW \
  51   CGO_CXXFLAGS CGO_CXXFLAGS_ALLOW CGO_CXXFLAGS_DISALLOW \
  52   CGO_FFLAGS   CGO_FFLAGS_ALLOW   CGO_FFLAGS_DISALLOW \
  53   CGO_LDFLAGS  CGO_LDFLAGS_ALLOW  CGO_LDFLAGS_DISALLOW \
  54   CXX \
  55   FC
  56 # Unmodified:
  57 #   PKG_CONFIG
  58
  59 # Architecture-specific environment variables:
  60 unexport \
  61   GOARM \
  62   GO386 \
  63   GOAMD64 \
  64   GOMIPS \
  65   GOMIPS64 \
  66   GOPPC64 \
  67   GOWASM
  68
  69 # Environment variables for use with code coverage:
  70 unexport \
  71   GOCOVERDIR
  72
  73 # Special-purpose environment variables:
  74 unexport \
  75   GCCGOTOOLDIR \
  76   GOEXPERIMENT \
  77   GOROOT_FINAL \
  78   GO_EXTLINK_ENABLED
  79 # Unmodified:
  80 #   GIT_ALLOW_PROTOCOL
  81
  82 # From https://pkg.go.dev/runtime#hdr-Environment_Variables
  83 unexport \
  84   GOGC \
  85   GOMEMLIMIT \
  86   GOMAXPROCS \
  87   GORACE \
  88   GOTRACEBACK
  89
  90 # From https://pkg.go.dev/cmd/cgo#hdr-Using_cgo_with_the_go_command
  91 unexport \
  92   CC_FOR_TARGET \
  93   CXX_FOR_TARGET
  94 # Todo:
  95 #   CC_FOR_${GOOS}_${GOARCH}
  96 #   CXX_FOR_${GOOS}_${GOARCH}
  97
  98 # From https://go.dev/doc/install/source#environment
  99 unexport \
 100   GOHOSTOS \
 101   GOHOSTARCH
 102
 103 # From https://go.dev/src/make.bash
 104 unexport \
 105   GO_GCFLAGS \
 106   GO_LDFLAGS \
 107   GO_LDSO \
 108   GO_DISTFLAGS \
 109   GOBUILDTIMELOGFILE \
 110   GOROOT_BOOTSTRAP
 111
 112 # From https://go.dev/doc/go1.9#parallel-compile
 113 unexport \
 114   GO19CONCURRENTCOMPILATION
 115
 116 # From https://go.dev/src/cmd/dist/build.go
 117 unexport \
 118   BOOT_GO_GCFLAGS \
 119   BOOT_GO_LDFLAGS
 120
 121 # From https://go.dev/src/cmd/dist/buildtool.go
 122 unexport \
 123   GOBOOTSTRAP_TOOLEXEC
 124
 125
 126 # GOOS / GOARCH
 127
 128 go_arch=$(subst \
 129   aarch64,arm64,$(subst \
 130   i386,386,$(subst \
 131   mipsel,mipsle,$(subst \
 132   mips64el,mips64le,$(subst \
 133   powerpc64,ppc64,$(subst \
 134   x86_64,amd64,$(1)))))))
 135
 136 GO_OS:=linux
 137 GO_ARCH:=$(call go_arch,$(ARCH))
 138 GO_OS_ARCH:=$(GO_OS)_$(GO_ARCH)
 139
 140 GO_HOST_OS:=$(call tolower,$(HOST_OS))
 141 GO_HOST_ARCH:=$(call go_arch,$(subst \
 142   armv6l,arm,$(subst \
 143   armv7l,arm,$(subst \
 144   i686,i386,$(HOST_ARCH)))))
 145 GO_HOST_OS_ARCH:=$(GO_HOST_OS)_$(GO_HOST_ARCH)
 146
 147 ifeq ($(GO_OS_ARCH),$(GO_HOST_OS_ARCH))
 148   GO_HOST_TARGET_SAME:=1
 149 else
 150   GO_HOST_TARGET_DIFFERENT:=1
 151 endif
 152
 153 ifeq ($(GO_ARCH),386)
 154   ifeq ($(CONFIG_TARGET_x86_geode)$(CONFIG_TARGET_x86_legacy),y)
 155     GO_386:=softfloat
 156   else
 157     GO_386:=sse2
 158   endif
 159
 160   # -fno-plt: causes "unexpected GOT reloc for non-dynamic symbol" errors
 161   GO_CFLAGS_TO_REMOVE:=-fno-plt
 162
 163 else ifeq ($(GO_ARCH),amd64)
 164   GO_AMD64:=v1
 165
 166 else ifeq ($(GO_ARCH),arm)
 167   GO_TARGET_FPU:=$(word 2,$(subst +,$(space),$(call qstrip,$(CONFIG_CPU_TYPE))))
 168
 169   # FPU names from https://gcc.gnu.org/onlinedocs/gcc-8.4.0/gcc/ARM-Options.html#index-mfpu-1
 170   # see also https://github.com/gcc-mirror/gcc/blob/releases/gcc-8.4.0/gcc/config/arm/arm-cpus.in
 171
 172   ifeq ($(GO_TARGET_FPU),)
 173     GO_ARM:=5
 174   else ifneq ($(filter $(GO_TARGET_FPU),vfp vfpv2),)
 175     GO_ARM:=6
 176   else
 177     GO_ARM:=7
 178   endif
 179
 180 else ifneq ($(filter $(GO_ARCH),mips mipsle),)
 181   ifeq ($(CONFIG_HAS_FPU),y)
 182     GO_MIPS:=hardfloat
 183   else
 184     GO_MIPS:=softfloat
 185   endif
 186
 187   # -mips32r2: conflicts with -march=mips32 set by go
 188   GO_CFLAGS_TO_REMOVE:=-mips32r2
 189
 190 else ifneq ($(filter $(GO_ARCH),mips64 mips64le),)
 191   ifeq ($(CONFIG_HAS_FPU),y)
 192     GO_MIPS64:=hardfloat
 193   else
 194     GO_MIPS64:=softfloat
 195   endif
 196
 197 else ifeq ($(GO_ARCH),ppc64)
 198   GO_PPC64:=power8
 199
 200 endif
 201
 202
 203 # Target Go
 204
 205 GO_ARCH_DEPENDS:=@(aarch64||arm||i386||i686||mips||mips64||mips64el||mipsel||powerpc64||riscv64||x86_64)
 206
 207
 208 # ASLR/PIE
 209
 210 # From https://go.dev/src/internal/platform/supported.go
 211 GO_PIE_SUPPORTED_OS_ARCH:= \
 212   android_386  android_amd64  android_arm  android_arm64 \
 213   linux_386    linux_amd64    linux_arm    linux_arm64 \
 214   windows_386  windows_amd64  windows_arm  windows_arm64 \
 215   \
 216   darwin_amd64 darwin_arm64 \
 217   ios_amd64    ios_arm64 \
 218   \
 219   freebsd_amd64 \
 220   \
 221   aix_ppc64 \
 222   \
 223   linux_loong64 linux_ppc64le linux_riscv64 linux_s390x
 224
 225 # From https://go.dev/src/cmd/go/internal/work/init.go
 226 go_pie_install_suffix=$(if $(filter $(1),aix_ppc64 windows_386 windows_amd64 windows_arm windows_arm64),,shared)
 227
 228 ifneq ($(filter $(GO_HOST_OS_ARCH),$(GO_PIE_SUPPORTED_OS_ARCH)),)
 229   GO_HOST_PIE_SUPPORTED:=1
 230   GO_HOST_PIE_INSTALL_SUFFIX:=$(call go_pie_install_suffix,$(GO_HOST_OS_ARCH))
 231 endif
 232
 233 ifneq ($(filter $(GO_OS_ARCH),$(GO_PIE_SUPPORTED_OS_ARCH)),)
 234   GO_TARGET_PIE_SUPPORTED:=1
 235   GO_TARGET_PIE_INSTALL_SUFFIX:=$(call go_pie_install_suffix,$(GO_OS_ARCH))
 236 endif
 237
 238
 239 # Spectre mitigations
 240
 241 GO_SPECTRE_SUPPORTED_ARCH:=amd64
 242
 243 ifneq ($(filter $(GO_HOST_ARCH),$(GO_SPECTRE_SUPPORTED_ARCH)),)
 244   GO_HOST_SPECTRE_SUPPORTED:=1
 245 endif
 246
 247 ifneq ($(filter $(GO_ARCH),$(GO_SPECTRE_SUPPORTED_ARCH)),)
 248   GO_TARGET_SPECTRE_SUPPORTED:=1
 249 endif
 250
 251
 252 # General build info
 253
 254 GO_BUILD_CACHE_DIR:=$(or $(call qstrip,$(CONFIG_GOLANG_BUILD_CACHE_DIR)),$(TMP_DIR)/go-build)
 255 GO_MOD_CACHE_DIR:=$(DL_DIR)/go-mod-cache
 256
 257 GO_MOD_ARGS= \
 258         -modcacherw
 259
 260 GO_GENERAL_BUILD_CONFIG_VARS= \
 261         CONFIG_GOLANG_MOD_CACHE_WORLD_READABLE="$(CONFIG_GOLANG_MOD_CACHE_WORLD_READABLE)" \
 262         GO_BUILD_CACHE_DIR="$(GO_BUILD_CACHE_DIR)" \
 263         GO_MOD_CACHE_DIR="$(GO_MOD_CACHE_DIR)" \
 264         GO_MOD_ARGS="$(GO_MOD_ARGS)"
 265
 266 define Go/CacheCleanup
 267         $(GO_GENERAL_BUILD_CONFIG_VARS) \
 268         $(SHELL) $(GO_INCLUDE_DIR)/golang-build.sh cache_cleanup
 269 endef