Android12 GMS移植mianline 编译报错/dexdump: error: Target of symlink is...

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问题现象：
           Android12 版本，移植mainline 进系统，编译报错如下：

1. [ 48% 66707/137461] symlink out/soong/.intermediates/prebuilts/module_sdk/art/current/host-exports/prebuilt_dex2oatd/linux_glibc_x86_64/dex2oatd
   
2. [ 48% 66708/137461] symlink out/soong/.intermediates/prebuilts/module_sdk/art/current/host-exports/prebuilt_dexdump/linux_glibc_x86_64/dexdump
   
3. [ 48% 66709/137461] //external/ppp/pppd:pppd clang magic.c
   
4. [ 48% 66710/137461] //prebuilts/module_sdk/art/current/host-exports:prebuilt_dexdump install dexdump [linux_glibc]
   
5. [ 48% 66711/137461] //hardware/libhardware/modules/power:power.default clang power.c [arm]
   
6. [ 48% 66712/137461] symlink out/soong/.intermediates/prebuilts/module_sdk/art/current/host-exports/prebuilt_hiddenapi/linux_glibc_x86_64/hiddenapi
   
7. [ 48% 66713/137461] //hardware/libhardware/modules/power:power.default clang power.c
   
8. [ 48% 66714/137461] compile out/soong/.primary/pom2bp/obj/pom2bp.a
   
9. [ 48% 66715/137461] //prebuilts/module_sdk/art/current/host-exports:prebuilt_hiddenapi install hiddenapi [linux_glibc]
   
10. [ 48% 66716/137461] host Prebuilt: dexdump (out/host/linux-x86/obj/EXECUTABLES/dexdump_intermediates/dexdump)
    
11. FAILED: out/host/linux-x86/obj/EXECUTABLES/dexdump_intermediates/dexdump
    
12. /bin/bash -c "(rm -f out/host/linux-x86/obj/EXECUTABLES/dexdump_intermediates/dexdump ) && (if [ -h out/soong/host/linux-x86/bin/dexdump ]; then ln -s \$(realpath out/soong/host/linux-x86/bin/dexdump) out/host/linux-x86/obj/EXECUTABLES/dexdump_intermediates/dexdump; else cp out/soong/host/linux-x86/bin/dexdump out/host/linux-x86/obj/EXECUTABLES/dexdump_intermediates/dexdump; fi ) && ([ -x out/host/linux-x86/obj/EXECUTABLES/dexdump_intermediates/dexdump ] || ( echo -e "\\033[1mout/host/linux-x86/obj/EXECUTABLES/dexdump_intermediates/dexdump: \\033[31merror:\\033[0m\\033[1m" 'Target of symlink is not executable'  "\\033[0m" >&2; false ) )"
    
13. out/host/linux-x86/obj/EXECUTABLES/dexdump_intermediates/dexdump: error: Target of symlink is not executable
    
14. [ 48% 66717/137461] compile out/soong/.primary/pom2mk/obj/pom2mk.a
    
15. [ 48% 66718/137461] //external/ppp/pppd:pppopptp-android clang plugins/pppopptp-android/pppopptp-android.c
    
16. [ 48% 66719/137461] //external/ppp/pppd:pppd clang demand.c
    
17. [ 48% 66720/137461] //external/ppp/pppd:pppol2tp-android clang plugins/pppol2tp-android/pppol2tp-android.c
    
18. [ 48% 66721/137461] //external/ppp/pppd:pppd clang fsm.c
    
19. [ 48% 66722/137461] //external/ppp/pppd:pppd clang upap.c

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解决方案：
          修改环境变量值：

1. export SOONG_CONFIG_art_module_source_build=true

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