我正在尝试安装gem install travis以根据参考使用travis clihttps://rubygems.org/gems/travis但在误差以下。

这里提到的解决方案https://github.com/ffi/ffi/issues/653 :

brew reinstall libffi
export LDFLAGS="-L/usr/local/opt/libffi/lib"
export PKG_CONFIG_PATH="/usr/local/opt/libffi/lib/pkgconfig"
gem install travis

找不到libffi的包配置“xcrun clang-o conftest-I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/Ruby-2.3.0/universal-darwin16-I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/2.3/usr/include/Ruby-2.3.0/backward-I/Library/Developer/CommandLineTools/sdk/MacOSX。sdk/System/Library/Frameworks/Ruby。framework/Versions/2.3/usr/include/ruby-2.3。0-I.-dxopen_SOURCE-D_DARWIN_C_SOURCE-D_DARWIN_UNLIMITED_SELECT-D_REENTRANT-g-Os-pipe-DHAVE_GCC_ATOMIC_-BUILTINS-iwithsysroot/usr/local/libressl/include conftest。c-L-L/System/Library/Frameworks/Ruby。framework/Versions/2.3/usr/lib-L.-L/Applications/Xcode。app/Contents/Developer/Platforms/MacOSX。平台/开发者/SDK/MacOSX10。12.内部。sdk/usr/local/libressl/lib-L/Applications/Xcode。app/Contents/Developer/Platforms/MacOSX。平台/开发者/SDK/MacOSX10。12.内部。sdk/usr/local/lib-arch x86_64-arch i386-lruby。2.3.0-lpthread-ldl-lobjc“在conftest.c:1包含的文件中：在/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/Ruby-2.3.0/Ruby.h:33:/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/Ruby.h:24:10:f错误：“ruby/config。未找到h'文件#包含“ruby/config.h”^~~~~~~~~~~~~~~~~~~生成错误1。选中的程序是：/*begin*/1:#include“ruby.h”2:3:int main（int argc，char*argv）4:{5:返回0；6:}/end*/

任何帮助都将不胜感激！试着找出答案，但没有发现有帮助