开此文章用于记录自己编译WebRTC安卓Native code遇到的问题。
问题0x01
错误提示如下：
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Traceback (most recent call last): File "./build_aar.py", line 234, in <module> sys.exit(main()) File "./build_aar.py", line 230, in main args.build_dir, args.extra_gn_switches, args.extra_ninja_switches) File "./build_aar.py", line 214, in BuildAar CollectCommon(aar_file, build_dir, archs[0]) File "./build_aar.py", line 179, in CollectCommon aar_file.write(MANIFEST_FILE, 'AndroidManifest.xml') File "/usr/lib/python2.7/zipfile.py", line 1146, in write st = os.stat(filename) OSError: [Errno 2] No such file or directory: 'sdk/android/AndroidManifest.xml' |
这个是在我执行build_aar.py --build-dir out --arch "armeabi-v7a" "arm64-v8a"命令编译生成aar文件遇到的。看了下目录，
sdk/android/AndroidManifest.xml是存在的。后来发现是路径问题。得切到WebRTC源码/src目录下执行：
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./tools_webrtc/android/build_aar.py --build-dir out --arch "armeabi-v7a" "arm64-v8a" |
而我原来是在/tools_webrtc/android/里直接执行build_aar.py。
问题0x02
编译支持H264软编软解报的问题，之前编译都没问题，编译错误打印如下：
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ERROR:root:Missing licenses for following third_party targets: openh264, ffmpeg Traceback (most recent call last): File "./tools_webrtc/android/build_aar.py", line 234, in <module> sys.exit(main()) File "./tools_webrtc/android/build_aar.py", line 230, in main args.build_dir, args.extra_gn_switches, args.extra_ninja_switches) File "./tools_webrtc/android/build_aar.py", line 219, in BuildAar GenerateLicenses(license_dir, build_dir, archs) File "./tools_webrtc/android/build_aar.py", line 197, in GenerateLicenses builder.GenerateLicenseText(output_dir) File "/home/jeff/webrtc/src/tools_webrtc/android/../libs/generate_licenses.py", line 204, in GenerateLicenseText raise Exception(error_msg) Exception: Missing licenses for following third_party targets: openh264, ffmpeg |
问题出在generate_licenses.py里，WebRTC安卓H264启用openh264编码，ffmepg解码，很多地方得自己手动加进去，generate_licenses.py里openh264以及ffmpeg的license路径我之前没加，导致编译报如上错误，按如下修改即可：
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diff --git a/tools_webrtc/libs/generate_licenses.py b/tools_webrtc/libs/generate_licenses.py index b8894ed39b..fec153c2bb 100755 --- a/tools_webrtc/libs/generate_licenses.py +++ b/tools_webrtc/libs/generate_licenses.py @@ -69,6 +69,8 @@ LIB_TO_LICENSES_DICT = { 'g722': ['modules/third_party/g722/LICENSE'], 'fft4g': ['common_audio/third_party/fft4g/LICENSE'], 'spl_sqrt_floor': ['common_audio/third_party/spl_sqrt_floor/LICENSE'], + 'openh264':['third_party/openh264/src/LICENSE'], + 'ffmpeg':['third_party/ffmpeg/LICENSE.md'], # TODO(bugs.webrtc.org/1110): Remove this hack. This is not a lib. # For some reason it is listed as so in _GetThirdPartyLibraries. |
问题0x03
切换WebRTC到去年11月某个日期版本，同时也切换depot_toos到对应日期，执行gclient sync，然后重新执行build_aar.py编译出现如下错误：
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[2832/3278] ACTION //third_party/auto:auto_common_java__compile_java(//build/toolchain/android:android_clang_arm) FAILED: gen/third_party/auto/auto_common_java.javac.jar gen/third_party/auto/auto_common_java.javac.jar.info python ../../build/android/gyp/javac.py --depfile=gen/third_party/auto/auto_common_java__compile_java.d --generated-dir=gen/third_party/auto/auto_common_java/generated_java --jar-path=gen/third_party/auto/auto_common_java.javac.jar --java-srcjars=\[\] --java-version=1.8 --full-classpath=@FileArg\(gen/third_party/auto/auto_common_java.build_config:deps_info:javac_full_classpath\) --interface-classpath=@FileArg\(gen/third_party/auto/auto_common_java.build_config:deps_info:javac_full_interface_classpath\) --processorpath=@FileArg\(gen/third_party/auto/auto_common_java.build_config:javac:processor_classpath\) --processors=@FileArg\(gen/third_party/auto/auto_common_java.build_config:javac:processor_classes\) --errorprone-path bin/errorprone @gen/third_party/auto/auto_common_java.sources Traceback (most recent call last): File "../../build/android/gyp/javac.py", line 608, in <module> sys.exit(main(sys.argv[1:])) File "../../build/android/gyp/javac.py", line 603, in main output_paths=output_paths) File "/home/jeff/webrtc/src/build/android/gyp/util/build_utils.py", line 674, in CallAndWriteDepfileIfStale track_subpaths_whitelist=track_subpaths_whitelist) File "/home/jeff/webrtc/src/build/android/gyp/util/md5_check.py", line 99, in CallAndRecordIfStale function(*args) File "../../build/android/gyp/javac.py", line 598, in <lambda> lambda: _OnStaleMd5(options, javac_cmd, java_files, classpath), File "../../build/android/gyp/javac.py", line 356, in _OnStaleMd5 stderr_filter=ProcessJavacOutput) File "/home/jeff/webrtc/src/build/android/gyp/util/build_utils.py", line 231, in CheckOutput raise CalledProcessError(cwd, args, stdout + stderr) util.build_utils.CalledProcessError: Command failed: ( cd /home/jeff/webrtc/src/out/armeabi-v7a; bin/errorprone -g -encoding UTF-8 -sourcepath : -XepDisableAllChecks -source 1.8 -target 1.8 -XDignore.symbol.file -d /tmp/tmpO3NFM3/classes -classpath lib.java/third_party/guava/guava.interface.jar @/tmp/tmpO3NFM3/files_list.txt ) -Xbootclasspath/p is no longer a supported option. Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. |
说无法创建Java Virtual Machine，解决方法，下面两个方法都试了，然后编译通过。也不知道哪个起作用，懒得折腾去验证了：
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sudo apt-get purge openjdk-8-jdk sudo apt-get install openjdk-11-jre sudo apt-get install openjdk-8-jre sudo update-java-alternatives -s java-1.8.0-openjdk-amd64 |
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sudo add-apt-repository ppa:openjdk-r/ppa sudo apt-get update sudo apt-get install openjdk-8-jdk sudo update-alternatives --config java # 回车，默认选择 |
文章评论
您好，请问openH264和ffmpeg的Licence是需要自己添加进去呢？还是webrtc source里就有呢？如果是需要自己加进去，请问在哪里获取？
@ambush webrtc source里本来就有了，你在generate_licenses.py把它们路径加进去就可以了
@Jeff 具体路径你看下我文章的git diff描述
大神，请教，能不能给个靠谱的webrtc android 编译需要修改哪些东西的方案
sudo update-alternatives --config java
# 回车，默认选择
这个地方是错误的 应该选择java8就可以了