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|
# Copyright 2009 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# Makefile included by all other Go makefiles.
# Clear variables that must come from Makefiles,
# not the environment.
LIB:=
TARG:=
GOFILES:=
HFILES:=
OFILES:=
YFILES:=
# GOROOT must be set.
ifeq ($(GOROOT),)
$(error $$GOROOT is not set; use gomake or set $$GOROOT in your environment)
endif
# Set up GOROOT_FINAL, GOARCH, GOOS if needed.
GOROOT_FINAL?=$(GOROOT)
ifeq ($(GOHOSTOS),)
GOHOSTOS:=$(shell uname | tr A-Z a-z | sed 's/mingw/windows/; s/.*windows.*/windows/')
endif
ifeq ($(GOOS),)
GOOS:=$(GOHOSTOS)
endif
GOOS_LIST=\
darwin\
freebsd\
linux\
netbsd\
openbsd\
plan9\
windows\
GOARCH_LIST=\
386\
amd64\
arm\
ifeq ($(filter $(GOOS),$(GOOS_LIST)),)
$(error Invalid $$GOOS '$(GOOS)'; must be one of: $(GOOS_LIST))
endif
ifeq ($(GOHOSTARCH),)
ifeq ($(GOHOSTOS),darwin)
# Even on 64-bit platform, darwin uname -m prints i386.
# Check for amd64 with sysctl instead.
GOHOSTARCH:=${shell if sysctl machdep.cpu.extfeatures | grep EM64T >/dev/null; then echo amd64; else uname -m | sed 's/i386/386/'; fi}
else
# Ask uname -m for the processor.
GOHOSTARCH:=${shell uname -m | sed 's/^..86$$/386/; s/^.86$$/386/; s/x86_64/amd64/; s/arm.*/arm/'}
endif
endif
ifeq ($(GOARCH),)
GOARCH:=$(GOHOSTARCH)
endif
# darwin requires GOHOSTARCH match GOARCH
ifeq ($(GOOS),darwin)
GOHOSTARCH:=$(GOARCH)
endif
ifeq ($(filter $(GOARCH),$(GOARCH_LIST)),)
$(error Invalid $$GOARCH '$(GOARCH)'; must be one of: $(GOARCH_LIST))
endif
ifeq ($(GOARCH),386)
O:=8
else ifeq ($(GOARCH),amd64)
O:=6
else ifeq ($(GOARCH),arm)
O:=5
ifneq ($(GOOS),linux)
$(error Invalid $$GOOS '$(GOOS)' for GOARCH=arm; must be linux)
endif
else
$(error Missing $$O for '$(GOARCH)')
endif
# Save for recursive make to avoid recomputing.
export GOARCH GOOS GOHOSTARCH GOHOSTOS GOARCH_LIST GOOS_LIST
# ugly hack to deal with whitespaces in $GOROOT
nullstring :=
space := $(nullstring) # a space at the end
QUOTED_GOROOT:=$(subst $(space),\ ,$(GOROOT))
# default GOBIN
ifndef GOBIN
GOBIN=$(QUOTED_GOROOT)/bin
endif
QUOTED_GOBIN=$(subst $(space),\ ,$(GOBIN))
AS=$(QUOTED_GOROOT)/bin/tool/$(O)a
CC=$(QUOTED_GOROOT)/bin/tool/$(O)c
GC=$(QUOTED_GOROOT)/bin/tool/$(O)g
LD=$(QUOTED_GOROOT)/bin/tool/$(O)l
OS=568vq
CFLAGS=-FVw
HOST_CC=$(QUOTED_GOROOT)/bin/tool/quietgcc
HOST_LD=$(QUOTED_GOROOT)/bin/tool/quietgcc
HOST_O=o
HOST_YFLAGS=-d
HOST_AR?=ar
# These two variables can be overridden in the environment
# to build with other flags. They are like $CFLAGS and $LDFLAGS
# in a more typical GNU build. We are more explicit about the names
# here because there are different compilers being run during the
# build (both gcc and 6c, for example).
HOST_EXTRA_CFLAGS?=-ggdb -O2
HOST_EXTRA_LDFLAGS?=
# The -fno-common here is not necessary, but some compilers
# on OS X seem to set it by default. Setting it here keeps the build
# working in that non-standard context.
HOST_CFLAGS=-c -fno-common -I"$(GOROOT)/include" $(HOST_EXTRA_CFLAGS)
HOST_LDFLAGS=$(HOST_EXTRA_LDFLAGS)
PWD=$(shell pwd)
# Decide whether use of cgo is okay.
ifeq ($(CGO_ENABLED),)
# Default on...
CGO_ENABLED:=1
ifeq ($(GOARCH),arm) # ... but not on ARM
CGO_ENABLED:=0
endif
ifeq ($(GOOS),plan9) # ... and not on Plan 9
CGO_ENABLED:=0
endif
ifeq ($(GOOS),openbsd) # ... and not on OpenBSD
CGO_ENABLED:=0
endif
ifeq ($(GOOS),netbsd) # ... and not on NetBSD
CGO_ENABLED:=0
endif
endif
# Make environment more standard.
LANG:=
LC_ALL:=C
LC_CTYPE:=C
GREP_OPTIONS:=
GREP_COLORS:=
export LANG LC_ALL LC_CTYPE GREP_OPTIONS GREP_COLORS
go-env:
@echo export GOARCH="$(GOARCH)"
@echo export GOOS="$(GOOS)"
@echo export GOHOSTARCH="$(GOHOSTARCH)"
@echo export GOHOSTOS="$(GOHOSTOS)"
@echo export CGO_ENABLED="$(CGO_ENABLED)"
@echo export O="$O"
@echo export AS="$(AS)"
@echo export CC="$(CC)"
@echo export GC="$(GC)"
@echo export LD="$(LD)"
@echo export OS="$(OS)"
@echo export CFLAGS="$(CFLAGS)"
@echo export LANG="$(LANG)"
@echo export LC_ALL="$(LC_ALL)"
@echo export LC_CTYPE="$(LC_CTYPE)"
@echo export GREP_OPTIONS="$(GREP_OPTIONS)"
@echo export GREP_COLORS="$(GREP_COLORS)"
@echo MAKE_GO_ENV_WORKED=1
# Don't let the targets in this file be used
# as the default make target.
.DEFAULT_GOAL:=
|
