我正在尝试从android x-86源构建一个.iso图像，但是这样做没有成功。您到这里为止：
1 我使用以下步骤在Mac上创建了一个新的APFS（区分大小写）分区：
打开应用程序→实用程序→磁盘实用程序
单击“查看”按钮，然后更改为“显示所有设备”
选择所需的容器磁盘，然后单击屏幕顶部的添加按钮
选择新分区并命名，例如“ android”
从“格式”菜单中选择“ APFS（区分大小写）”
2 使用此命令在终端中获得src
mkdir ~/bin
PATH=~/bin:$PATH
curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo
mkdir oreo-x86
cd oreo-x86
repo init -u git://gitscm.sf.net/gitroot/android-x86/manifest -b oreo-x86
repo sync
目前，没有发生错误，下载了几个小时后，我在本地得到了一份回购副本。
3 构建.iso映像
在终端中，我尝试使用以下命令进行构建：
source build/envsetup.sh lunch android_x86_64-userdebug
这是此命令的输出： ============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=8.1.0
TARGET_PRODUCT=android_x86_64
TARGET_BUILD_VARIANT=userdebug
TARGET_BUILD_TYPE=release
TARGET_PLATFORM_VERSION=OPM1
TARGET_BUILD_APPS=
TARGET_ARCH=x86_64
TARGET_ARCH_VARIANT=x86_64
TARGET_CPU_VARIANT=
TARGET_2ND_ARCH=x86
TARGET_2ND_ARCH_VARIANT=x86_64
TARGET_2ND_CPU_VARIANT=
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=darwin
HOST_OS_EXTRA=Darwin-17.4.0-x86_64-i386-64bit
HOST_CROSS_OS=
HOST_CROSS_ARCH=
HOST_CROSS_2ND_ARCH=
HOST_BUILD_TYPE=release
BUILD_ID=OPM8.181005.003
OUT_DIR=out
AUX_OS_VARIANT_LIST=
============================================
m -j4 iso_img在此命令处引发错误。
这是输出：
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=8.1.0
TARGET_PRODUCT=android_x86_64
TARGET_BUILD_VARIANT=userdebug
TARGET_BUILD_TYPE=release
TARGET_ARCH=x86_64
TARGET_ARCH_VARIANT=x86_64
TARGET_2ND_ARCH=x86
TARGET_2ND_ARCH_VARIANT=x86_64
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=darwin
HOST_OS_EXTRA=Darwin-17.4.0-x86_64-i386-64bit
HOST_BUILD_TYPE=release
BUILD_ID=OPM8.181005.003
OUT_DIR=out
============================================ ninja: no work to do.
[1/1] out/soong/.bootstrap/bin/soong_build out/soong/build.ninja
out/target/product/x86_64/clean_steps.mk was modified, regenerating...
[2/828] including ./art/Android.mk ...
art/build/Android.common.mk:50: warning: unsupported HOST_ARCH=x86_64
[619/828] including ./system/sepolicy/Android.mk ...
./system/sepolicy/Android.mk:111: warning: BOARD_SEPOLICY_VERS not specified, assuming current platform version
[828/828] including ./tools/apksig/Android.mk ...
platform_testing/build/tasks/tests/instrumentation_metric_test_list.mk: warning: continuous_instrumentation_metric_tests: Unknown installed file for module perf-setup.sh
platform_testing/build/tasks/tests/instrumentation_test_list.mk: warning: continuous_instrumentation_tests: Unknown installed file for module RecyclerViewTests
platform_testing/build/tasks/tests/instrumentation_test_list.mk: warning: continuous_instrumentation_tests: Unknown installed file for module TelecomUnitTests
platform_testing/build/tasks/tests/instrumentation_test_list.mk: warning: continuous_instrumentation_tests: Unknown installed file for module SettingsFunctionalTests
platform_testing/build/tasks/tests/instrumentation_test_list.mk: warning: continuous_instrumentation_tests: Unknown installed file for module LauncherFunctionalTests
platform_testing/build/tasks/tests/instrumentation_test_list.mk: warning: continuous_instrumentation_tests: Unknown installed file for module EmergencyInfoTests
platform_testing/build/tasks/tests/native_metric_test_list.mk: warning: continuous_native_metric_tests: Unknown installed file for module perf-setup.sh
`[ 1% 997/90508] //frameworks/compile/mclinker/lib/Script:libmcldScript yacc ScriptParser.yy
FAILED: out/soong/.intermediates/frameworks/compile/mclinker/lib/Script/libmcldScript/android_x86_64_static_core/gen/yacc/frameworks/compile/mclinker/lib/Script/ScriptParser.cpp out/soong/.intermediates/frameworks/compile/mclinker/lib/Script/libmcldScript/android_x86_64_static_core/gen/yacc/frameworks/compile/mclinker/lib/Script/ScriptParser.h
BISON_PKGDATADIR=external/bison/data prebuilts/misc/darwin-x86/bison/bison -d --defines=out/soong/.intermediates/frameworks/compile/mclinker/lib/Script/libmcldScript/android_x86_64_static_core/gen/yacc/frameworks/compile/mclinker/lib/Script/ScriptParser.h -o out/soong/.intermediates/frameworks/compile/mclinker/lib/Script/libmcldScript/android_x86_64_static_core/gen/yacc/frameworks/compile/mclinker/lib/Script/ScriptParser.cpp frameworks/compile/mclinker/lib/Script/ScriptParser.yy`
`[ 1% 998/90508] //frameworks/compile/mclinker/lib/Script:libmcldScript lex ScriptScanner.ll [darwin]
ninja: build stopped: subcommand failed.
13:51:50 ninja failed with: exit status 1
#### failed to build some targets (01:57 (mm:ss)) ####`
有人知道为什么会发生这种情况吗，我该如何解决？谢谢。