源码编译之错误解决

• 错误1：
  描述：

  ...
  error: unsupported reloc 42
  target thumb C++: libGLES_trace_32 <=
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  ...
  

解决1：修改 build/core/clang/HOST_x86_common.mk

CLANG_CONFIG_x86_LINUX_HOST_EXTRA_ASFLAGS := \
--gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
--sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \

• -B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/bin \
  -no-integrated-as

  CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CFLAGS := \

解决2：修改 art/build/Android.common_build.mk

  # Host.
  ART_HOST_CLANG := false
  ifeq ($(WITHOUT_HOST_CLANG),false)
    # By default, host builds use clang for better warnings.
    ART_HOST_CLANG := true
  endif

执行命令，更改链接指向

  ln -sf /usr/bin/ld.gold prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/x86_64-linux/bin/ld

解决3：

cp /usr/bin/ld.gold prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/x86_64-linux/bin/ld