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ubuntu1604编译android5.1(android L)失败error: unsupportedreloc 43等问题
1. 编译的问题
见session_root1
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/bin/ld:error: out/host/linux-x86/obj32/SHARED_LIBRARIES/libsigchain_intermediates/sigchain_dummy.o:unsupported reloc 43 against global symbol std::cout
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/bin/ld:error:out/host/linux-x86/obj32/SHARED_LIBRARIES/libsigchain_intermediates/sigchain_dummy.o:unsupported reloc 43 against global symbol __dso_handle
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/bin/ld:error:out/host/linux-x86/obj32/SHARED_LIBRARIES/libsigchain_intermediates/sigchain_dummy.o:unsupported reloc 43 against global symbol std::ios_base::Init::~Init()
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/include/c++/4.6/ostream:515:error: unsupported reloc 43
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/include/c++/4.6/iostream:75:error: unsupported reloc 43
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/include/c++/4.6/iostream:75:error: unsupported reloc 43
clang: error: linker command failed withexit code 1 (use -v to see invocation)
build/core/host_shared_library_internal.mk:44:recipe for target 'out/host/linux-x86/obj32/lib/libsigchain.so' failed
make: ***[out/host/linux-x86/obj32/lib/libsigchain.so] Error 1
2. 解决过程的修改
(1) 修改art/build/Android.common_build.mk文件
ifneq ($(WITHOUT_HOST_CLANG),true)
改为：
ifeq ($(WITHOUT_HOST_CLANG),false)
修改方法：
sudo vi art/build/Android.common_build.mk
/WITHOUT_HOST_CLANG #搜索该字符的位置
编译还是有问题，如下：prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/bin/ld:error:out/host/linux-x86/obj32/SHARED_LIBRARIES/libnativehelper_intermediates/JNIHelp.o:unsupported reloc 43 against global symbolstd::string::_Rep::_S_empty_rep_storage
…
libnativehelper/JniInvocation.cpp:165:error: unsupported reloc 43
clang: error: linker command failed withexit code 1 (use -v to see invocation)
build/core/host_shared_library_internal.mk:44:recipe for target 'out/host/linux-x86/obj32/lib/libnativehelper.so' failed
make: *** [out/host/linux-x86/obj32/lib/libnativehelper.so]Error 1
从报错信息来看，是在链接 host 程序时出错。链接 host 程序时用的工具链是放在 codebase 中的，即prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/bin/../lib/gcc/x86_64-linux/4.6/../../../../x86_64-linux/bin/ld.
(2) cp /usr/bin/ld.goldprebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/x86_64-linux/bin/ld
(3) 编译后提示make updat-api
执行make update-api后继续编译就正常了。
参考链接：
Ubuntu 16.04 编译Android6.0系统源码
Ubuntu 16.04 Android 5.1编译环境搭建记录
ubuntu16.04 64bit编译android5.1错误
Ubuntu16 编译源码出错unsupported reloc 43
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