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// Copyright 2017 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package build
import (
"fmt"
"path/filepath"
"strings"
)
// DumpMakeVars can be used to extract the values of Make variables after the
// product configurations are loaded. This is roughly equivalent to the
// `get_build_var` bash function.
//
// goals can be used to set MAKECMDGOALS, which emulates passing arguments to
// Make without actually building them. So all the variables based on
// MAKECMDGOALS can be read.
//
// extra_targets adds real arguments to the make command, in case other targets
// actually need to be run (like the Soong config generator).
//
// vars is the list of variables to read. The values will be put in the
// returned map.
func DumpMakeVars(ctx Context, config Config, goals, extra_targets, vars []string) (map[string]string, error) {
ctx.BeginTrace("dumpvars")
defer ctx.EndTrace()
cmd := Command(ctx, config, "make",
"make",
"--no-print-directory",
"-f", "build/core/config.mk",
"dump-many-vars",
"CALLED_FROM_SETUP=true",
"BUILD_SYSTEM=build/core",
"MAKECMDGOALS="+strings.Join(goals, " "),
"DUMP_MANY_VARS="+strings.Join(vars, " "),
"OUT_DIR="+config.OutDir())
cmd.Args = append(cmd.Args, extra_targets...)
cmd.Sandbox = makeSandbox
// TODO: error out when Stderr contains any content
cmd.Stderr = ctx.Stderr()
output, err := cmd.Output()
if err != nil {
return nil, err
}
ret := make(map[string]string, len(vars))
for _, line := range strings.Split(string(output), "\n") {
if len(line) == 0 {
continue
}
if key, value, ok := decodeKeyValue(line); ok {
if value, ok = singleUnquote(value); ok {
ret[key] = value
ctx.Verboseln(key, value)
} else {
return nil, fmt.Errorf("Failed to parse make line: %q", line)
}
} else {
return nil, fmt.Errorf("Failed to parse make line: %q", line)
}
}
return ret, nil
}
func runMakeProductConfig(ctx Context, config Config) {
// Variables to export into the environment of Kati/Ninja
exportEnvVars := []string{
// So that we can use the correct TARGET_PRODUCT if it's been
// modified by PRODUCT-* arguments
"TARGET_PRODUCT",
// compiler wrappers set up by make
"CC_WRAPPER",
"CXX_WRAPPER",
"JAVAC_WRAPPER",
// ccache settings
"CCACHE_COMPILERCHECK",
"CCACHE_SLOPPINESS",
"CCACHE_BASEDIR",
"CCACHE_CPP2",
}
// Variables to print out in the top banner
bannerVars := []string{
"PLATFORM_VERSION_CODENAME",
"PLATFORM_VERSION",
"TARGET_PRODUCT",
"TARGET_BUILD_VARIANT",
"TARGET_BUILD_TYPE",
"TARGET_BUILD_APPS",
"TARGET_ARCH",
"TARGET_ARCH_VARIANT",
"TARGET_CPU_VARIANT",
"TARGET_2ND_ARCH",
"TARGET_2ND_ARCH_VARIANT",
"TARGET_2ND_CPU_VARIANT",
"HOST_ARCH",
"HOST_2ND_ARCH",
"HOST_OS",
"HOST_OS_EXTRA",
"HOST_CROSS_OS",
"HOST_CROSS_ARCH",
"HOST_CROSS_2ND_ARCH",
"HOST_BUILD_TYPE",
"BUILD_ID",
"OUT_DIR",
"AUX_OS_VARIANT_LIST",
"TARGET_BUILD_PDK",
"PDK_FUSION_PLATFORM_ZIP",
}
allVars := append(append([]string{
// Used to execute Kati and Ninja
"NINJA_GOALS",
"KATI_GOALS",
}, exportEnvVars...), bannerVars...)
make_vars, err := DumpMakeVars(ctx, config, config.Arguments(), []string{
filepath.Join(config.SoongOutDir(), "soong.variables"),
}, allVars)
if err != nil {
ctx.Fatalln("Error dumping make vars:", err)
}
// Print the banner like make does
fmt.Fprintln(ctx.Stdout(), "============================================")
for _, name := range bannerVars {
if make_vars[name] != "" {
fmt.Fprintf(ctx.Stdout(), "%s=%s\n", name, make_vars[name])
}
}
fmt.Fprintln(ctx.Stdout(), "============================================")
// Populate the environment
env := config.Environment()
for _, name := range exportEnvVars {
if make_vars[name] == "" {
env.Unset(name)
} else {
env.Set(name, make_vars[name])
}
}
config.SetKatiArgs(strings.Fields(make_vars["KATI_GOALS"]))
config.SetNinjaArgs(strings.Fields(make_vars["NINJA_GOALS"]))
}
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