# Makefile for gotools
#   Copyright (C) 2015-2016 Free Software Foundation, Inc.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

ACLOCAL_AMFLAGS = -I ./config -I ../config

gcc_version := $(shell $(GCC_FOR_TARGET) -dumpversion)

libexecsubdir = $(libexecdir)/gcc/$(target_noncanonical)/$(gcc_version)

mkinstalldirs = $(SHELL) $(toplevel_srcdir)/mkinstalldirs
PWD_COMMAND = $${PWDCMD-pwd}
STAMP = echo timestamp >

libgodir = ../$(target_noncanonical)/libgo
LIBGODEP = $(libgodir)/libgo.la

if NATIVE
# Use the compiler we just built.
GOCOMPILER = $(GOC_FOR_TARGET) $(XGCC_FLAGS_FOR_TARGET)
else
GOCOMPILER = $(GOC)
endif

GOCFLAGS = $(CFLAGS_FOR_TARGET)
GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)

AM_GOCFLAGS = -I $(libgodir)
AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@

libgosrcdir = $(srcdir)/../libgo/go
cmdsrcdir = $(libgosrcdir)/cmd

go_cmd_go_files = \
	$(cmdsrcdir)/go/alldocs.go \
	$(cmdsrcdir)/go/bug.go \
	$(cmdsrcdir)/go/build.go \
	$(cmdsrcdir)/go/clean.go \
	$(cmdsrcdir)/go/context.go \
	$(cmdsrcdir)/go/discovery.go \
	$(cmdsrcdir)/go/doc.go \
	$(cmdsrcdir)/go/env.go \
	$(cmdsrcdir)/go/fix.go \
	$(cmdsrcdir)/go/fmt.go \
	$(cmdsrcdir)/go/generate.go \
	$(cmdsrcdir)/go/get.go \
	$(cmdsrcdir)/go/go11.go \
	$(cmdsrcdir)/go/help.go \
	$(cmdsrcdir)/go/http.go \
	$(cmdsrcdir)/go/list.go \
	$(cmdsrcdir)/go/main.go \
	$(cmdsrcdir)/go/note.go \
	$(cmdsrcdir)/go/pkg.go \
	$(cmdsrcdir)/go/run.go \
	$(cmdsrcdir)/go/signal.go \
	$(cmdsrcdir)/go/signal_unix.go \
	$(cmdsrcdir)/go/test.go \
	$(cmdsrcdir)/go/testflag.go \
	$(cmdsrcdir)/go/tool.go \
	$(cmdsrcdir)/go/vcs.go \
	$(cmdsrcdir)/go/version.go \
	$(cmdsrcdir)/go/vet.go \
	$(libgodir)/zstdpkglist.go

go_cmd_gofmt_files = \
	$(cmdsrcdir)/gofmt/doc.go \
	$(cmdsrcdir)/gofmt/gofmt.go \
	$(cmdsrcdir)/gofmt/internal.go \
	$(cmdsrcdir)/gofmt/rewrite.go \
	$(cmdsrcdir)/gofmt/simplify.go

go_cmd_cgo_files = \
	$(cmdsrcdir)/cgo/ast.go \
	$(cmdsrcdir)/cgo/doc.go \
	$(cmdsrcdir)/cgo/gcc.go \
	$(cmdsrcdir)/cgo/godefs.go \
	$(cmdsrcdir)/cgo/main.go \
	$(cmdsrcdir)/cgo/out.go \
	$(cmdsrcdir)/cgo/util.go

GCCGO_INSTALL_NAME := $(shell echo gccgo|sed '$(program_transform_name)')
GCC_INSTALL_NAME := $(shell echo gcc|sed '$(program_transform_name)')
GXX_INSTALL_NAME := $(shell echo g++|sed '$(program_transform_name)')

zdefaultcc.go: s-zdefaultcc; @true
s-zdefaultcc: Makefile
	echo 'package main' > zdefaultcc.go.tmp
	echo 'const defaultGCCGO = "$(bindir)/$(GCCGO_INSTALL_NAME)"' >> zdefaultcc.go.tmp
	echo 'const defaultCC = "$(bindir)/$(GCC_INSTALL_NAME)"' >> zdefaultcc.go.tmp
	echo 'const defaultCXX = "$(bindir)/$(GXX_INSTALL_NAME)"' >> zdefaultcc.go.tmp
	echo 'const defaultPkgConfig = "pkg-config"' >> zdefaultcc.go.tmp
	$(SHELL) $(srcdir)/../move-if-change zdefaultcc.go.tmp zdefaultcc.go
	$(STAMP) $@ 

MOSTLYCLEANFILES = zdefaultcc.go s-zdefaultcc

if NATIVE

# For a native build we build the programs using the newly built libgo
# and install them as regular programs.

bin_PROGRAMS = go$(EXEEXT) gofmt$(EXEEXT)
noinst_PROGRAMS = cgo$(EXEEXT)
man_MANS = go.1 gofmt.1

go$(EXEEXT): $(go_cmd_go_files) zdefaultcc.go $(LIBGODEP)
	$(GOLINK) $(go_cmd_go_files) zdefaultcc.go $(LIBS) $(NET_LIBS)
gofmt$(EXEEXT): $(go_cmd_gofmt_files) $(LIBGODEP)
	$(GOLINK) $(go_cmd_gofmt_files) $(LIBS) $(NET_LIBS)
cgo$(EXEEXT): $(go_cmd_cgo_files) zdefaultcc.go $(LIBGODEP)
	$(GOLINK) $(go_cmd_cgo_files) zdefaultcc.go $(LIBS) $(NET_LIBS)

install-exec-local: cgo$(EXEEXT)
	$(MKDIR_P) $(DESTDIR)$(libexecsubdir)
	rm -f $(DESTDIR)$(libexecsubdir)/cgo$(exeext)
	$(INSTALL_PROGRAM) cgo$(exeext) $(DESTDIR)$(libexecsubdir)/cgo$(exeext)

uninstall-local:
	rm -f $(DESTDIR)$(libexecsubdir)/cgo$(exeext)

# Run tests using the go tool, and frob the output to look like that
# generated by DejaGNU.  The main output of this is two files:
# gotools.sum and gotools.log.

# check-head starts generating the log files in DejaGNU format.  This
# is a separate target so that the date is approximately when we start
# running the tests.
check-head:
	@echo "Test Run By $${USER} on `date`" > gotools.head
	@echo "Native configuration is $(host_triplet)" >> gotools.head
	@echo >> gotools.head
	@echo "		=== gotools tests ===" >> gotools.head
	@echo >> gotools.head

# check-gccgo is a little shell script that executes gccgo with the
# options to pick up the newly built libgo.
check-gccgo: Makefile
	rm -f $@
	echo "#!/bin/sh" > $@
	abs_libgodir=`cd $(libgodir) && $(PWD_COMMAND)`; \
	echo "$(GOCOMPILE)" '"$$@"' "-I $${abs_libgodir} -L $${abs_libgodir} -L $${abs_libgodir}/.libs" >> $@
	chmod +x $@

# CHECK_ENV sets up the environment to run the newly built go tool.
CHECK_ENV = \
	PATH=`echo $(abs_builddir):$${PATH} | sed 's,::*,:,g;s,^:*,,;s,:*$$,,'`; \
	export PATH; \
	GCCGO="$(abs_builddir)/check-gccgo"; \
	export GCCGO; \
	GCCGOTOOLDIR="$(abs_builddir)"; \
	export GCCGOTOOLDIR; \
	GO_TESTING_GOTOOLS=yes; \
	export GO_TESTING_GOTOOLS; \
	abs_libgodir=`cd $(libgodir) && $(PWD_COMMAND)`; \
	LD_LIBRARY_PATH=`echo $${abs_libgodir}/.libs:$${LD_LIBRARY_PATH} | sed 's,::*,:,g;s,^:*,,;s,:*$$,,'`; \
	export LD_LIBRARY_PATH;

# check-go-tools runs `go test cmd/go` in our environment.
check-go-tool: go$(EXEEXT) check-head check-gccgo
	rm -rf check-go-dir
	$(MKDIR_P) check-go-dir/src/cmd/go
	cp $(cmdsrcdir)/go/*.go check-go-dir/src/cmd/go/
	cp $(libgodir)/zstdpkglist.go check-go-dir/src/cmd/go/
	cp zdefaultcc.go check-go-dir/src/cmd/go/
	cp -r $(cmdsrcdir)/go/testdata check-go-dir/src/cmd/go/
	$(CHECK_ENV) \
	GOPATH=`cd check-go-dir && $(PWD_COMMAND)`; \
	export GOPATH; \
	(cd check-go-dir/src/cmd/go && $(abs_builddir)/go$(EXEEXT) test -test.short -test.v) >& cmd_go-testlog || true
	grep '^--- ' cmd_go-testlog | sed -e 's/^--- \(.*\) ([^)]*)$$/\1/'

# The check targets runs the tests and assembles the output files.
check: check-head check-go-tool
	mv gotools.head gotools.sum
	cp gotools.sum gotools.log
	for file in cmd_go-testlog; do \
	  testname=`echo $${file} | sed -e 's/-testlog//' -e 's|_|/|'`; \
	  echo "Running $${testname}" >> gotools.sum; \
	  echo "Running $${testname}" >> gotools.log; \
	  sed -e 's/^--- \(.*\) ([^)]*)$$/\1/' < $${file} >> gotools.log; \
	  grep '^--- ' $${file} | sed -e 's/^--- \(.*\) ([^)]*)$$/\1/' -e 's/SKIP/UNTESTED/' >> gotools.sum; \
	done
	@echo >> gotools.sum
	@echo "		=== gotools Summary ===" >> gotools.sum
	pass=`grep -c '^PASS' gotools.sum`; \
	if test "$${pass}" -ne "0"; then \
	  echo "# of expected passes		$${pass}" >> gotools.sum; \
	fi
	fail=`grep -c '^FAIL' gotools.sum`; \
	if test "$${fail}" -ne "0"; then \
	  echo "# of unexpected failures	$${fail}" >> gotools.sum; \
	fi
	untested=`grep -c '^UNTESTED' gotools.sum`; \
	if test "$${untested}" -ne "0"; then \
	  echo "# of untested testcases		$${untested}" >> gotools.sum; \
	fi
	echo `echo $(GOC_FOR_TARGET) | sed -e 's/ .*//'`  `$(GOC_FOR_TARGET) -v 2>&1 | grep " version" | sed -n -e 's/.* \(version.*$$\)/\1/p'` >> gotools.sum
	echo >> gotools.log
	echo "runtest completed at `date`" >> gotools.log
	if grep '^FAIL' gotools.sum >/dev/null 2>&1; then exit 1; fi

.PHONY: check check-head check-go-tool

else

# For a non-native build we have to build the programs using a
# previously built host (or build -> host) Go compiler.  We should
# only do this if such a compiler is available.  We also need to get
# the right values for GOARCH and GOOS in the default build context in
# the go/build package.  Figure this out later.

endif

mostlyclean-local:
	rm -rf check-go-dir