MacOS Error

[Narquadah]

While trying to use protobuf in a project I encountered an error. So I cloned the Repository and ran conan test which gave the following result:

arch=x86_64 build_type=Release compiler=apple-clang compiler.libcxx=libc++ compiler.version=7.3 os=Macos

dyld: Symbol not found: __ZN6google8protobuf8compiler20CommandLineInterface12AllowPluginsERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE
  Referenced from: conan-protobuf/test_package/build/da39a3ee5e6b4b0d3255bfef95601890afd80709/./bin/protoc (which was built for Mac OS X 10.11)
  Expected in: /usr/local/lib/libprotoc.9.dylib
 in conan-protobuf/test_package/build/da39a3ee5e6b4b0d3255bfef95601890afd80709/./bin/protoc
ERROR: Error 5 while executing ./bin/protoc ../../message.proto --proto_path=../.. --cpp_out="."

When I tested it on Linux it worked fine. Any help would be appreciated.

[memsharded]

Thanks for reporting, will check asap.

[memsharded]

I have checked with those settings and everything works fine. Is it possible that you have another version of Protobuf in your system path? Which OSX version?

[Narquadah]

I had another version in my path and removed it, but there still was an error. I have MacOS 10.11.

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/install_name_tool: string table not at the end of the file (can't be processed) in file: ./libprotobuf-lite.9.dylib.dSYM/Contents/Resources/DWARF/libprotobuf-lite.9.dylib
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/install_name_tool: string table not at the end of the file (can't be processed) in file: ./libprotobuf.9.dylib.dSYM/Contents/Resources/DWARF/libprotobuf.9.dylib
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/install_name_tool: string table not at the end of the file (can't be processed) in file: ./libprotoc.9.dylib.dSYM/Contents/Resources/DWARF/libprotoc.9.dylib
Protobuf/2.6.1@memsharded/testing package(): Copied 115 '.h' files
Protobuf/2.6.1@memsharded/testing package(): Copied 1 '' files: protoc
Protobuf/2.6.1@memsharded/testing package(): Copied 12 '.dylib' files
Protobuf/2.6.1@memsharded/testing: Package 'ceef3be852ace1018c035b1a57df80271ed52e65' created
PROJECT: Generated cmake created conanbuildinfo.cmake
PROJECT: Generated conaninfo.txt
PROJECT imports(): Copied 1 '' files: protoc
PROJECT imports(): Copied 3 '.dylib' files: libprotobuf-lite.9.dylib, libprotoc.9.dylib, libprotobuf.9.dylib
Documents/workspace/pulls/testing/conan-protobuf/test_package/build/da39a3ee5e6b4b0d3255bfef95601890afd80709
dyld: Library not loaded: @executable_path/libprotobuf.9.dylib
  Referenced from: workspace/pulls/testing/conan-protobuf/test_package/build/da39a3ee5e6b4b0d3255bfef95601890afd80709/./bin/protoc
  Reason: no suitable image found.  Did find:
       workspace/pulls/testing/conan-protobuf/test_package/build/da39a3ee5e6b4b0d3255bfef95601890afd80709/./bin/libprotobuf.9.dylib: mach-o, but wrong filetype
       workspace/pulls/testing/conan-protobuf/test_package/build/da39a3ee5e6b4b0d3255bfef95601890afd80709/bin/libprotobuf.9.dylib: mach-o, but wrong filetype
ERROR: Error 5 while executing ./bin/protoc ../../message.proto --proto_path=../.. --cpp_out="."

[Narquadah]

Ok I found the problem I had a gcc 6 linked in my path. It works now Thanks for your quick response!

[memsharded]

Great! Thanks to you for reporting. Some comments:

• The cmake generator has some built-in checks to ensure that the compiler and compiler version match the specified by conan (install). But the package is using automake tools, and ConfigureEnvironment, so no checks are done here (yet, there are some open issues to improve this). That is why the system was not warning about the gcc in the path.
• While trying, I tried changing from libc++ to libstdc++, and got some linker errors. I guess that this version of protobuf doesn't work with libstdc++, but libc++ is the most used one, so no problem, right?

Cheers