graphics/shaderc: unbreak consumers with ld.bfd after r559203

usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setEntryPoint(char const*)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TPoolAllocator::push()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TProgram::~TProgram()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::GetKhronosToolId()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::FinalizeProcess()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setShiftUboBinding(unsigned int)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TIntermediate::getBaseAlignmentScalar(glslang::TType const&, int&)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setShiftSsboBinding(unsigned int)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setStringsWithLengthsAndNames(char const* const*, int const*, char const* const*, int)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setResourceSetBinding(std::1::vector<std::1::basic_string<char, std::1::char_traits<char>, std::1::allocator<char> >, std::1::allocator<std::1::basic_string<char, std::1::char_traits<char>, std::1::allocator<char> > > > const&)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::getInfoLog()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::TShader(EShLanguage)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TIntermediate::computeTypeLocationSize(glslang::TType const&, EShLanguage)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::InitializeProcess()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TIntermediate::improperStraddle(glslang::TType const&, int, int)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setAutoMapBindings(bool)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TPoolAllocator::allocate(unsigned int)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setAutoMapLocations(bool)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setHlslIoMapping(bool)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TPoolAllocator::pop()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TProgram::getInfoLog()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setShiftSamplerBinding(unsigned int)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::preprocess(TBuiltInResource const*, int, EProfile, bool, bool, EShMessages, std::1::basic_string<char, std::1::char_traits<char>, std::__1::allocator<char> >*, glslang::TShader::Includer&)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setShiftTextureBinding(unsigned int)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::~TShader()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setShiftImageBinding(unsigned int)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TProgram::mapIO(glslang::TIoMapResolver*, glslang::TIoMapper*)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TIntermediate::getMemberAlignment(glslang::TType const&, int&, int&, glslang::TLayoutPacking, bool)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TProgram::TProgram()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `spvtools::utils::BitVector::Or(spvtools::utils::BitVector const&)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setInvertY(bool)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::GetThreadPoolAllocator()'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::parse(TBuiltInResource const*, int, EProfile, bool, bool, EShMessages, glslang::TShader::Includer&)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TProgram::link(EShMessages)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setShiftUavBinding(unsigned int)'
usr/local/lib/libshaderc_shared.so.1: undefined reference to `glslang::TShader::setNanMinMaxClamp(bool)'
cc: error: linker command failed with exit code 1 (use -v to see invocation)