Move version checking from Make into soong_ui
When kati keeps state around, it has to regenerate the ninja file every
time the state is changed. So move the java version checking into
soong_ui, where we can parallelize it with other operations instead of
only checking it occasionally.
Bug: 35970961
Test: Put java7 in PATH, m -j
Test: Put java8-google in PATH, m -j
Test: Put a space in TOP, m -j
Test: OUT_DIR=<case-preserving fs> m -j
Test: OUT_DIR=<path with space> m -j
Test: DIST_DIR=<path with sapce> m -j
Change-Id: I3245c8dd6d856240d17d54cb05d593dc9df71a27
diff --git a/ui/build/java.go b/ui/build/java.go
new file mode 100644
index 0000000..5a09b1a
--- /dev/null
+++ b/ui/build/java.go
@@ -0,0 +1,156 @@
+// 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 (
+ "regexp"
+ "runtime"
+ "strings"
+ "sync"
+)
+
+const incompatibleJavacStr = "google"
+
+var javaVersionInfo = struct {
+ once sync.Once
+ startOnce sync.Once
+
+ java_version_output string
+ javac_version_output string
+}{}
+
+func getJavaVersions(ctx Context, config Config) {
+ javaVersionInfo.startOnce.Do(func() {
+ go func() {
+ if ctx.Tracer != nil {
+ thread := ctx.Tracer.NewThread("java_version")
+ ctx.Tracer.Begin("get version", thread)
+ defer ctx.Tracer.End(thread)
+ }
+
+ getJavaVersionsImpl(ctx, config)
+ }()
+ })
+}
+
+func getJavaVersionsImpl(ctx Context, config Config) {
+ javaVersionInfo.once.Do(func() {
+ cmd := Command(ctx, config, "java", "java", "-version")
+ cmd.Environment.Unset("_JAVA_OPTIONS")
+ javaVersionInfo.java_version_output = string(cmd.CombinedOutputOrFatal())
+
+ cmd = Command(ctx, config, "javac", "javac", "-version")
+ cmd.Environment.Unset("_JAVA_OPTIONS")
+ javaVersionInfo.javac_version_output = string(cmd.CombinedOutputOrFatal())
+ })
+}
+
+func checkJavaVersion(ctx Context, config Config) {
+ ctx.BeginTrace("java_version_check")
+ defer ctx.EndTrace()
+
+ getJavaVersionsImpl(ctx, config)
+
+ var required_java_version string
+ var java_version_regexp *regexp.Regexp
+ var javac_version_regexp *regexp.Regexp
+ if legacy, _ := config.Environment().Get("LEGACY_USE_JAVA7"); legacy != "" {
+ required_java_version = "1.7"
+ java_version_regexp = regexp.MustCompile(`^java .*[ "]1\.7[\. "$]`)
+ javac_version_regexp = regexp.MustCompile(`[ "]1\.7[\. "$]`)
+ } else {
+ required_java_version = "1.8"
+ java_version_regexp = regexp.MustCompile(`[ "]1\.8[\. "$]`)
+ javac_version_regexp = java_version_regexp
+ }
+
+ java_version := javaVersionInfo.java_version_output
+ javac_version := javaVersionInfo.javac_version_output
+
+ found := false
+ for _, l := range strings.Split(java_version, "\n") {
+ if java_version_regexp.MatchString(l) {
+ java_version = l
+ found = true
+ break
+ }
+ }
+ if !found {
+ ctx.Println("***************************************************************")
+ ctx.Println("You are attempting to build with the incorrect version of java.")
+ ctx.Println()
+ ctx.Println("Your version is:", java_version)
+ ctx.Println("The required version is:", required_java_version+".x")
+ ctx.Println()
+ ctx.Println("Please follow the machine setup instructions at:")
+ ctx.Println(" https://source.android.com/source/initializing.html")
+ ctx.Println("***************************************************************")
+ ctx.Fatalln("stop")
+ }
+
+ if runtime.GOOS == "linux" {
+ if !strings.Contains(java_version, "openjdk") {
+ ctx.Println("*******************************************************")
+ ctx.Println("You are attempting to build with an unsupported JDK.")
+ ctx.Println()
+ ctx.Println("Only an OpenJDK based JDK is supported.")
+ ctx.Println()
+ ctx.Println("Please follow the machine setup instructions at:")
+ ctx.Println(" https://source.android.com/source/initializing.html")
+ ctx.Println("*******************************************************")
+ ctx.Fatalln("stop")
+ }
+ } else { // darwin
+ if strings.Contains(java_version, "openjdk") {
+ ctx.Println("*******************************************************")
+ ctx.Println("You are attempting to build with an unsupported JDK.")
+ ctx.Println()
+ ctx.Println("You use OpenJDK, but only Sun/Oracle JDK is supported.")
+ ctx.Println()
+ ctx.Println("Please follow the machine setup instructions at:")
+ ctx.Println(" https://source.android.com/source/initializing.html")
+ ctx.Println("*******************************************************")
+ ctx.Fatalln("stop")
+ }
+ }
+
+ incompatible_javac := strings.Contains(javac_version, incompatibleJavacStr)
+
+ found = false
+ for _, l := range strings.Split(javac_version, "\n") {
+ if javac_version_regexp.MatchString(l) {
+ javac_version = l
+ found = true
+ break
+ }
+ }
+ if !found || incompatible_javac {
+ ctx.Println("****************************************************************")
+ ctx.Println("You are attempting to build with the incorrect version of javac.")
+ ctx.Println()
+ ctx.Println("Your version is:", javac_version)
+ if incompatible_javac {
+ ctx.Println("The '" + incompatibleJavacStr + "' version is not supported for Android platform builds.")
+ ctx.Println("Use a publically available JDK and make sure you have run envsetup.sh / lunch.")
+ } else {
+ ctx.Println("The required version is:", required_java_version)
+ }
+ ctx.Println()
+ ctx.Println("Please follow the machine setup instructions at:")
+ ctx.Println(" https://source.android.com/source/initializing.html")
+ ctx.Println("****************************************************************")
+ ctx.Fatalln("stop")
+ }
+}