Android 源码编译技巧--模块清理
参考之前的文章 南国樗里疾-Android 源码编译技巧–模块编译
既然有模块编译，应该也有模块清理。
Android 源码编译之后，如果有代码更新，一般都是 make installclean 之后再 make ，
支持模块编译的话可以模块编译后在线替换，
不支持模块编译的话需要重新生成 rom 。
make clean-
make installclean 会清理 app 生成目录 out/target/product/ ；
（也会清理其他的一些文件，不展开说明了）
但不会清理中间件生成目录（非官方说法，我自己这样称呼的） out/target/common/obj/APPS/ ，如果不清理这个目录，可能出现编译未生效的情况。
可以手动删除这个目录，也可以使用如下命令清除。
make clean-
这句意思是单独清理某个模块，
如 make clean-SystemUI ，就是删除 SystemUI 模块的编译产物和中间件，其实就是删除以下目录，
out/target/product//system/priv-app/SystemUI/
out/target/product//obj/APPS/SystemUI_intermediates/
out/target/common/obj/APPS/SystemUI_intermediates/
然后再编译就可以了。
总结下，模块编译时，
先 make clean- ，
再 make 。
installclean 清理的目录
再探究下 installclean 清理了哪些东西，搜索 installclean 找到 build/soong/ui/build/cleanbuild.go ，
// installClean deletes all of the installed files -- the intent is to remove
// files that may no longer be installed, either because the user previously
// installed them, or they were previously installed by default but no longer
// are.
//
// This is faster than a full clean, since we're not deleting the
// intermediates. Instead of recompiling, we can just copy the results.
func installClean(ctx Context, config Config) {
dataClean(ctx, config)
if hostCrossOutPath := config.hostCrossOut(); hostCrossOutPath != "" {
hostCrossOut := func(path string) string {
return filepath.Join(hostCrossOutPath, path)
}
removeGlobs(ctx,
hostCrossOut("bin"),
hostCrossOut("coverage"),
hostCrossOut("lib*"),
hostCrossOut("nativetest*"))
}
hostOutPath := config.HostOut()
hostOut := func(path string) string {
return filepath.Join(hostOutPath, path)
}
hostCommonOut := func(path string) string {
return filepath.Join(config.hostOutRoot(), "common", path)
}
productOutPath := config.ProductOut()
productOut := func(path string) string {
return filepath.Join(productOutPath, path)
}
// Host bin, frameworks, and lib* are intentionally omitted, since
// otherwise we'd have to rebuild any generated files created with
// those tools.
removeGlobs(ctx,
hostOut("apex"),
hostOut("obj/NOTICE_FILES"),
hostOut("obj/PACKAGING"),
hostOut("coverage"),
hostOut("cts"),
hostOut("nativetest*"),
hostOut("sdk"),
hostOut("sdk_addon"),
hostOut("testcases"),
hostOut("vts"),
hostOut("vts10"),
hostOut("vts-core"),
hostCommonOut("obj/PACKAGING"),
productOut("*.img"),
productOut("*.zip"),
productOut("android-info.txt"),
productOut("misc_info.txt"),
productOut("apex"),
productOut("kernel"),
productOut("kernel-*"),
productOut("data"),
productOut("skin"),
productOut("obj/NOTICE_FILES"),
productOut("obj/PACKAGING"),
productOut("ramdisk"),
productOut("debug_ramdisk"),
productOut("vendor_ramdisk"),
productOut("vendor_debug_ramdisk"),
productOut("test_harness_ramdisk"),
productOut("recovery"),
productOut("root"),
productOut("system"),
productOut("system_dlkm"),
productOut("system_other"),
productOut("vendor"),
productOut("vendor_dlkm"),
productOut("product"),
productOut("system_ext"),
productOut("oem"),
productOut("obj/FAKE"),
productOut("breakpad"),
productOut("cache"),
productOut("coverage"),
productOut("installer"),
productOut("odm"),
productOut("odm_dlkm"),
productOut("sysloader"),
productOut("testcases"),
productOut("symbols"))
}
// Remove everything in the data directory.
func dataClean(ctx Context, config Config) {
removeGlobs(ctx, filepath.Join(config.ProductOut(), "data", "*"))
ctx.Println("Entire data directory removed.")
}
他主要做了两件事：
1.调用 dataClean ，删除 ProductOut 目录也就是 out/target/product/mpanel/data/ 。
2.通过 removeGlobs 删除如下目录的文件
- hostOut ：out/host/
- hostCommonOut ：out/target/common/< product>
- productOut ：out/target/product/< product >
make installclean 运行 log 如下，不同安卓版本、不同厂商的编译规则、分区打包规则等可能不一样，编译 log 不尽相同，参考看看就好，
out/target/product//data/nativetest
out/target/product//data/nativetest64
out/target/product//apusys.img
out/target/product//cam_vpu1-verified.img
out/target/product//cam_vpu1.img
out/target/product//cam_vpu2-verified.img
out/target/product//cam_vpu2.img
out/target/product//cam_vpu3-verified.img
out/target/product//cam_vpu3.img
out/target/product//dpm-verified.img
out/target/product//dpm.img
out/target/product//mcupm.img
out/target/product//spmfw-verified.img
out/target/product//spmfw.img
out/target/product//sspm.img
out/target/product//tee-verified.img
out/target/product//tee.img
out/target/product//data
out/target/product//obj/PACKAGING
out/target/product//ramdisk
out/target/product//debug_ramdisk
out/target/product//vendor_ramdisk
out/target/product//recovery
out/target/product//root
out/target/product//system
out/target/product//system_dlkm
out/target/product//vendor
out/target/product//vendor_dlkm
out/target/product//obj/FAKE
out/target/product//odm_dlkm
out/target/product//testcases
out/target/product//symbols
添加 installclean 清理目录
前文提到 installclean 命令不会清理 out/target/common/obj/APPS/ 目录。
想要清理这个目录，修改如下，把它加入清理列表即可，
diff --git a/build/soong/ui/build/cleanbuild.go b/build/soong/ui/build/cleanbuild.go
old mode 100644
new mode 100755
index c47f614d64b..dcc226e3b35
--- a/build/soong/ui/build/cleanbuild.go
+++ b/build/soong/ui/build/cleanbuild.go
@@ -34,6 +34,7 @@ func removeGlobs(ctx Context, globs ...string) {
for _, file := range files {
err = os.RemoveAll(file)
+ ctx.Println("[cleanbuild.go] , remove :",file)
if err != nil {
ctx.Fatalf("Failed to remove file %q: %v", file, err)
}
@@ -83,6 +84,11 @@ func installClean(ctx Context, config Config, what int) {
return filepath.Join(productOutPath, path)
}
+ commonOutPath := config.CommonOut()
+ commonOut := func(path string) string {
+ return filepath.Join(commonOutPath, path)
+ }
+
// Host bin, frameworks, and lib* are intentionally omitted, since
// otherwise we'd have to rebuild any generated files created with
// those tools.
@@ -96,12 +102,14 @@ func installClean(ctx Context, config Config, what int) {
hostOut("sdk_addon"),
hostOut("testcases"),
hostOut("vts"),
+ commonOut("obj/APPS"),
productOut("*.img"),
productOut("*.zip"),
productOut("android-info.txt"),
productOut("kernel"),
productOut("data"),
productOut("skin"),
productOut("obj/NOTICE_FILES"),
productOut("obj/PACKAGING"),
productOut("ramdisk"),
diff --git a/build/soong/ui/build/config.go b/build/soong/ui/build/config.go
old mode 100644
new mode 100755
index 7eb3a7252f2..1b126f03891
--- a/build/soong/ui/build/config.go
+++ b/build/soong/ui/build/config.go
@@ -560,6 +560,10 @@ func (c *configImpl) ProductOut() string {
return filepath.Join(c.OutDir(), "target", "product", c.TargetDevice())
}
+func (c *configImpl) CommonOut() string {
+ return filepath.Join(c.OutDir(), "target", "common")
+}
+
func (c *configImpl) DevicePreviousProductConfig() string {
return filepath.Join(c.ProductOut(), "previous_build_config.mk")
}