问题描述
我正在尝试构建 Android 模拟器：https://android.googlesource.com/platform/external/qemu.git/+/refs/heads/aosp-emu-30-release
我克隆了整个 AOSP 源代码，并从 repo 中向 default.xml 添加了一些缺失的包，它们是：
<project name="platform/external/qemu" path="external/qemu" revision="791783c6e74c936a8fcd231ad36219385723bb8a" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
<project name="platform/prebuilts/android-emulator-build/qemu-android-deps" path="prebuilts/android-emulator-build/qemu-android-deps" revision="715d3bed0a3dc4f9980528c9bfb81469f2d3cbab" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
<project name="platform/prebuilts/android-emulator-build/common" path="prebuilts/android-emulator-build/common" revision="180c9a42b79f9c22a38f902564ea3950d4460a96" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
<project name="platform/prebuilts/android-emulator-build/qt" path="prebuilts/android-emulator-build/qt" revision="23cbd79e9db666af535e2cefcb23fcdf0ff0c123" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
<project name="platform/prebuilts/android-emulator-build/mesa" path="prebuilts/android-emulator-build/mesa" revision="be7c00f399b415511d73308f0af0c0310512aced" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
<project name="platform/prebuilts/android-emulator-build/mesa-deps" path="prebuilts/android-emulator-build/mesa-deps" revision="17837fdb1889014fa01cbbbda56afc9b6034815f" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
<project name="platform/prebuilts/android-emulator-build/curl" path="prebuilts/android-emulator-build/curl" revision="06f0905068b9ebfdd2d11b4d310c36b68c2fbe2f" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
<project name="platform/prebuilts/android-emulator-build/archive" path="prebuilts/android-emulator-build/archive" revision="0545d85d4442d77841f8a81ecd2627aff175ce02" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
<project name="platform/prebuilts/android-emulator-build/protobuf" path="prebuilts/android-emulator-build/protobuf" revision="8e2a5472dd374e6c971d30eb3d00898a8c1a25c8" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
<project name="platform/external/grpc-grpc" path="external/grpc" revision="0d80ea35ba09d0462ca13f236cc9ddc3fb749c57" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
当我通过在 android/rebuild.sh 存储库上运行 platform/external/qemu 进行编译时发现它们丢失时，我添加了所有这些。直到我遇到这个错误：
CMake Error at android/android-grpc/CMakeLists.txt:2 (add_subdirectory):
add_subdirectory given source
"/home/project/disk/aosp/grapheneos-lz_experiments/external/qemu/../grpc/emulator"
which is not an existing directory.
解决方法
没有 platform/external/grpc 存储库，但有 platform/external/grpc-grpc，如下所示，我在路径 external/grpc 中显示：
<project name="platform/external/grpc-grpc" path="external/grpc" revision="0d80ea35ba09d0462ca13f236cc9ddc3fb749c57" upstream="refs/heads/aosp-emu-30-release" dest-branch="refs/heads/aosp-emu-30-release" groups="pdk" clone-depth="1"/>
很高兴知道为什么 repo 不只是命名为 grpc 而不是 grpc-grpc 或者为什么编译器不尝试从 grpc-grpc 而不是 grpc