Catalina編譯android 10報錯
環境
先聲明一下環境：
系統： macOS Catalina 10.15.3
aosp分支版本：android-10.0.0_r21
編譯目標版本：aosp_walleye-userdebug
當執行完編譯相關命令後，最終執行make -j16的時候，出現了異常：
編譯相關命令簡介：
source build/envsetup.sh lunch 21 make -j16
異常一：系統不兼容
爲了方便大家遇到的時候能搜到這裏，我把整個異常的代碼都貼出來：
Superli-2:aosp superli$ make -j16
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=10
TARGET_PRODUCT=aosp_walleye
TARGET_BUILD_VARIANT=userdebug
TARGET_BUILD_TYPE=release
TARGET_ARCH=arm64
TARGET_ARCH_VARIANT=armv8-a
TARGET_CPU_VARIANT=cortex-a73
TARGET_2ND_ARCH=arm
TARGET_2ND_ARCH_VARIANT=armv8-a
TARGET_2ND_CPU_VARIANT=cortex-a73
HOST_ARCH=x86_64
HOST_OS=darwin
HOST_OS_EXTRA=Darwin-19.3.0-x86_64-10.15.3
HOST_BUILD_TYPE=release
BUILD_ID=QQ1A.200105.002
OUT_DIR=out
PRODUCT_SOONG_NAMESPACES=device/google/wahoo vendor/google/camera hardware/google/pixel
============================================
[ 0% 2/22868] build out/target/product/walleye/obj/ETC/sepolicy_tests_intermed
sepolicy_testsFAILED: out/target/product/walleye/obj/ETC/sepolicy_tests_intermediates/
/bin/bash -c "(out/host/darwin-x86/bin/sepolicy_tests -l out/host/darwin-x86/lib64/libsepolwrap.dylib -f out/target/product/walleye/obj/ETC/plat_file_contexts_intermediates/plat_file_contexts -f out/target/product/walleye/obj/ETC/vendor_file_contexts_intermediates/vendor_file_contexts -p out/target/product/walleye/obj/ETC/sepolicy_intermediates/sepolicy ) && (touch out/target/product/walleye/obj/ETC/sepolicy_tests_intermediates/sepolicy_tests )"
/bin/bash: line 1: 47188 Segmentation fault: 11 ( out/host/darwin-x86/bin/sepolicy_tests -l out/host/darwin-x86/lib64/libsepolwrap.dylib -f out/target/product/walleye/obj/ETC/plat_file_contexts_intermediates/plat_file_contexts -f out/target/product/walleye/obj/ETC/vendor_file_contexts_intermediates/vendor_file_contexts -p out/target/product/walleye/obj/ETC/sepolicy_intermediates/sepolicy )
[ 0% 3/22868] build out/target/product/walleye/obj/ETC/treble_sepolicy_tests_2
FAILED: out/target/product/walleye/obj/ETC/treble_sepolicy_tests_28.0_intermediates/treble_sepolicy_tests_28.0
/bin/bash -c "(out/host/darwin-x86/bin/treble_sepolicy_tests -l out/host/darwin-x86/lib64/libsepolwrap.dylib -f out/target/product/walleye/obj/ETC/plat_file_contexts_intermediates/plat_file_contexts -f out/target/product/walleye/obj/ETC/vendor_file_contexts_intermediates/vendor_file_contexts -b out/target/product/walleye/obj/ETC/built_plat_sepolicy_intermediates/built_plat_sepolicy -m out/target/product/walleye/obj/ETC/treble_sepolicy_tests_28.0_intermediates/28.0_mapping.combined.cil -o out/target/product/walleye/obj/ETC/treble_sepolicy_tests_28.0_intermediates/built_28.0_plat_sepolicy -p out/target/product/walleye/obj/ETC/sepolicy_intermediates/sepolicy -u out/target/product/walleye/obj/ETC/built_plat_sepolicy_intermediates/base_plat_pub_policy.cil ) && (touch out/target/product/walleye/obj/ETC/treble_sepolicy_tests_28.0_intermediates/treble_sepolicy_tests_28.0 )"
/bin/bash: line 1: 47187 Segmentation fault: 11 ( out/host/darwin-x86/bin/treble_sepolicy_tests -l out/host/darwin-x86/lib64/libsepolwrap.dylib -f out/target/product/walleye/obj/ETC/plat_file_contexts_intermediates/plat_file_contexts -f out/target/product/walleye/obj/ETC/vendor_file_contexts_intermediates/vendor_file_contexts -b out/target/product/walleye/obj/ETC/built_plat_sepolicy_intermediates/built_plat_sepolicy -m out/target/product/walleye/obj/ETC/treble_sepolicy_tests_28.0_intermediates/28.0_mapping.combined.cil -o out/target/product/walleye/obj/ETC/treble_sepolicy_tests_28.0_intermediates/built_28.0_plat_sepolicy -p out/target/product/walleye/obj/ETC/sepolicy_intermediates/sepolicy -u out/target/product/walleye/obj/ETC/built_plat_sepolicy_intermediates/base_plat_pub_policy.cil )
[ 0% 4/22868] build out/target/product/walleye/obj/ETC/treble_sepolicy_tests_2
FAILED: out/target/product/walleye/obj/ETC/treble_sepolicy_tests_27.0_intermediates/treble_sepolicy_tests_27.0
/bin/bash -c "(out/host/darwin-x86/bin/treble_sepolicy_tests -l out/host/darwin-x86/lib64/libsepolwrap.dylib -f out/target/product/walleye/obj/ETC/plat_file_contexts_intermediates/plat_file_contexts -f out/target/product/walleye/obj/ETC/vendor_file_contexts_intermediates/vendor_file_contexts -b out/target/product/walleye/obj/ETC/built_plat_sepolicy_intermediates/built_plat_sepolicy -m out/target/product/walleye/obj/ETC/treble_sepolicy_tests_27.0_intermediates/27.0_mapping.combined.cil -o out/target/product/walleye/obj/ETC/treble_sepolicy_tests_27.0_intermediates/built_27.0_plat_sepolicy -p out/target/product/walleye/obj/ETC/sepolicy_intermediates/sepolicy -u out/target/product/walleye/obj/ETC/built_plat_sepolicy_intermediates/base_plat_pub_policy.cil ) && (touch out/target/product/walleye/obj/ETC/treble_sepolicy_tests_27.0_intermediates/treble_sepolicy_tests_27.0 )"
/bin/bash: line 1: 47190 Segmentation fault: 11 ( out/host/darwin-x86/bin/treble_sepolicy_tests -l out/host/darwin-x86/lib64/libsepolwrap.dylib -f out/target/product/walleye/obj/ETC/plat_file_contexts_intermediates/plat_file_contexts -f out/target/product/walleye/obj/ETC/vendor_file_contexts_intermediates/vendor_file_contexts -b out/target/product/walleye/obj/ETC/built_plat_sepolicy_intermediates/built_plat_sepolicy -m out/target/product/walleye/obj/ETC/treble_sepolicy_tests_27.0_intermediates/27.0_mapping.combined.cil -o out/target/product/walleye/obj/ETC/treble_sepolicy_tests_27.0_intermediates/built_27.0_plat_sepolicy -p out/target/product/walleye/obj/ETC/sepolicy_intermediates/sepolicy -u out/target/product/walleye/obj/ETC/built_plat_sepolicy_intermediates/base_plat_pub_policy.cil )
17:56:43 ninja failed with: exit status 1
#### failed to build some targets (21 seconds) ####
解決方案
該問題是因爲編譯腳本中的內容和Catalina系統不兼容，google已經出了官方補丁，補丁地址。
要解決的同學，可以點進去看看，不過作爲一個唯飯博客，我會直接告訴你怎麼做。
用工具打開你的/system/sepolicy/Android.bp 這個文件，打開後長這樣：
// libsepolwrap gets loaded from the system python, which does not have the
// ASAN runtime. So turn off sanitization for ourself, and use static
// libraries, since the shared libraries will use ASAN.
static_libs: [
"libbase",
"libsepol",
],
stl: "libc++_static",
sanitize: {
never: true,
},
}
將stl: "libc++_static",刪除並保存即可。
然後再重新執行編譯就行了。
保險起見，你可以把另一個補丁也加上，補丁地址。
用工具打開/build/soong/cc/config/x86_darwin_host.go，打開後長這樣：
darwinSupportedSdkVersions = []string{
"10.10",
"10.11",
"10.12",
"10.13",
"10.14",
}
將它改爲：
darwinSupportedSdkVersions = []string{
"10.10",
"10.11",
"10.12",
"10.13",
"10.14",
"10.15",
}
我用過這兩個文件的修改後，編譯一次成功。但願你也是這樣。
刷機fastboot 無法識別設備
執行 fastboot -w flashall或者fastboot devices的時候，出現如下異常：
ERROR: Couldn't create a device interface iterator: (e00002bd)
ERROR: Couldn't create a device interface iterator: (e00002bd)
ERROR: Couldn't create a device interface iterator: (e00002bd)
原因也是fastboot 版本不兼容。
解決 我將fastboot 版本替換爲 26就可以了，如何更換？ 去這個地址：platform-tools_r26.0.1, 下載解壓後，將一個名爲fastboot的可執行文件替換到你當前的fastboot目錄即可。
你可以通過
which fastboot看到你當前的fastboot地址。
找不到ROM位置
以上各種都解決完後，執行fastboot -w flashall刷機，出現找不到ROM位置的異常：
Superli-2:walleye superli$ fastboot -w flashall
error: neither -p product specified nor ANDROID_PRODUCT_OUT set
Superli-2:walleye superli$
或者說這種異常：
error: could not load android-info.txt
網上各種說法，都是讓你去配置ANDROID_PRODUCT_OUT或者指定-p參數，但是並沒有用。 如果你和我遇到的差不多，那可能是你當前的shell會話，沒有執行環境初始化。
解決：我因爲編譯完後，中途退出了shell，重新打開準備刷系統，結果報了這個錯。 只要重新初始化一下編譯環境就可以解決：
source build/envsetup.sh
lunch 21
執行完後，再去對應目錄刷系統，就可以成功了。``
差不多就這些了，Enjoy~