Android源码编译报错：minibp因‘错误过多’触发panic

错误日志 #

[1/1] out/soong/.minibootstrap/minibp out/soong/.bootstrap/build.ninja
FAILED: out/soong/.bootstrap/build.ninja 
out/soong/.minibootstrap/minibp -t -l out/.module_paths/Android.bp.list -b out/soong -n out -d out/soong/.bootstrap/build.ninja.d -o out/soong/.bootstrap/build.ninja Android.bp
panic: too many errors

goroutine 22 [running]:
github.com/google/blueprint/parser.(*parser).error(0xc420285b80, 0x6c0a80, 0xc420288c20)
    build/blueprint/parser/parser.go:134 +0x317
github.com/google/blueprint/parser.(*parser).errorf(0xc420285b80, 0x696e73, 0x15, 0x0, 0x0, 0x0)
    build/blueprint/parser/parser.go:139 +0x75
github.com/google/blueprint/parser.newParser.func1(0xc420285b80, 0x696e73, 0x15)
    build/blueprint/parser/parser.go:115 +0x4f
text/scanner.(*Scanner).error(0xc420285b80, 0x696e73, 0x15)
    /home/chaos/android_build/prebuilts/go/linux-x86/src/text/scanner/scanner.go:327 +0x2d1
text/scanner.(*Scanner).next(0xc420285b80, 0x0)
    /home/chaos/android_build/prebuilts/go/linux-x86/src/text/scanner/scanner.go:284 +0x3c9
text/scanner.(*Scanner).Peek(0xc420285b80, 0x268)
    /home/chaos/android_build/prebuilts/go/linux-x86/src/text/scanner/scanner.go:316 +0x4a
text/scanner.(*Scanner).Scan(0xc420285b80, 0x0)
    /home/chaos/android_build/prebuilts/go/linux-x86/src/text/scanner/scanner.go:540 +0x2f
github.com/google/blueprint/parser.(*parser).next(0xc420285b80)
    build/blueprint/parser/parser.go:156 +0x4f
github.com/google/blueprint/parser.newParser(0x6c0c80, 0xc420272068, 0xc420214360, 0x68df3d)
    build/blueprint/parser/parser.go:119 +0x172
github.com/google/blueprint/parser.ParseAndEval(0xc420170840, 0x17, 0x6c0c80, 0xc420272068, 0xc420214360, 0x17, 0x0, 0x0, 0x415a28)
    build/blueprint/parser/parser.go:87 +0x43
github.com/google/blueprint.(*Context).parseOne(0xc4200a42c0, 0x68df3d, 0x1, 0xc420170840, 0x17, 0x6c0c80, 0xc420272068, 0xc420214360, 0xc420095a40, 0x50fd08, ...)
    build/blueprint/context.go:938 +0x21d
github.com/google/blueprint.(*Context).openAndParse.func1(0x6c1660, 0xc420272068, 0xc42028ecd8, 0xc420911e58, 0xc4200a42c0, 0x68df3d, 0x1, 0xc420170840, 0x17, 0xc420214360, ...)
    build/blueprint/context.go:902 +0x120
github.com/google/blueprint.(*Context).openAndParse(0xc4200a42c0, 0xc420170840, 0x17, 0xc420214360, 0x68df3d, 0x1, 0xc420095a40, 0x0, 0x0, 0x0, ...)
    build/blueprint/context.go:903 +0x627
github.com/google/blueprint.(*Context).WalkBlueprintsFiles.func1.1(0xc4200a42c0, 0xc420095a40, 0x68df3d, 0x1, 0xc42001ede0, 0xc42001ed80, 0xc42001ee40, 0xc42001eea0, 0xc420094f90, 0xc420018430)
    build/blueprint/context.go:753 +0x84
created by github.com/google/blueprint.(*Context).WalkBlueprintsFiles.func1
    build/blueprint/context.go:752 +0x293
ninja: build stopped: subcommand failed.
17:47:51 soong minibootstrap failed with: exit status 1

编译环境 #

Linux version 5.4.0-150-generic (buildd@bos03-amd64-012)
Ubuntu 7.5.0-3ubuntu1~18.04, #167~18.04.1-Ubuntu,
gcc version 7.5.0
openjdk version "9"
OpenJDK Runtime Environment (build 9+181-android4627429)
OpenJDK 64-Bit Server VM (build 9+181-android4627429, mixed mode

已做排查 #

• 检查近期修改的.bp文件，未发现明显语法错误
• 尝试清理重建项目（make clean && make），问题未解决

可能的解决办法 #

• 启用详细错误日志：编译时添加SOONG_LOG_LEVEL=debug参数，比如执行SOONG_LOG_LEVEL=debug make，获取具体的.bp文件错误信息，避免直接触发panic。
• 单独解析可疑.bp文件：用minibp工具单独检查可疑文件，命令格式：out/soong/.minibootstrap/minibp -t path/to/your/Android.bp，定位具体错误行。
• 检查字符编码与换行符：部分.bp文件可能包含非ASCII字符或Windows风格换行符（CRLF），导致扫描器出错。用file path/to/Android.bp检查编码，dos2unix path/to/Android.bp转换换行符。
• 重新同步prebuilt Go：源码自带的prebuilt Go可能损坏，执行repo sync prebuilts/go/linux-x86 -f重新同步。
• 重建Android.bp.list：删除out/.module_paths/Android.bp.list后重新生成，或手动生成：find . -name Android.bp | sort > out/.module_paths/Android.bp.list。

内容的提问来源于stack exchange，提问作者Chao WANG