Build fails on FreeBSD

[yurivict]

I'm trying to restore the FreeBSD port, but it fails with these link messages:

../DisplayOutput/OpenGL/glx.cpp:(.text+0x57b): undefined reference to `_GLEE_GLX_SGI_swap_control'
../DisplayOutput/OpenGL/glx.cpp:(.text+0x580): undefined reference to `GLeeEnabled'
../DisplayOutput/OpenGL/glx.cpp:(.text+0x58f): undefined reference to `pglXSwapIntervalSGI'
glx.o: In function `DisplayOutput::CUnixGL::toggleVSync()':
../DisplayOutput/OpenGL/glx.cpp:(.text+0xa46): undefined reference to `_GLEE_GLX_SGI_swap_control'
../DisplayOutput/OpenGL/glx.cpp:(.text+0xa4b): undefined reference to `GLeeEnabled'
../DisplayOutput/OpenGL/glx.cpp:(.text+0xa5a): undefined reference to `pglXSwapIntervalSGI'
ShaderGL.o: In function `DisplayOutput::CShaderGL::~CShaderGL()':
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x4a): undefined reference to `pglDeleteObjectARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x57): undefined reference to `pglDeleteObjectARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x64): undefined reference to `pglDeleteObjectARB'
ShaderGL.o: In function `DisplayOutput::CShaderGL::~CShaderGL()':
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xaa): undefined reference to `pglDeleteObjectARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xb7): undefined reference to `pglDeleteObjectARB'
ShaderGL.o:../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xc4): more undefined references to `pglDeleteObjectARB' follow
ShaderGL.o: In function `DisplayOutput::CShaderGL::Bind()':
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x119): undefined reference to `pglUseProgramObjectARB'
ShaderGL.o: In function `DisplayOutput::CShaderGL::Unbind()':
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x348): undefined reference to `pglUseProgramObjectARB'
ShaderGL.o: In function `DisplayOutput::CShaderGL::Build(char const*, char const*)':
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x38c): undefined reference to `_GLEE_ARB_shading_language_100'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x391): undefined reference to `GLeeEnabled'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x471): undefined reference to `pglCreateProgramObjectARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x490): undefined reference to `pglCreateShaderObjectARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x4d3): undefined reference to `pglShaderSourceARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x4dd): undefined reference to `pglCompileShaderARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x4f3): undefined reference to `pglGetObjectParameterivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x50a): undefined reference to `pglAttachObjectARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x572): undefined reference to `pglGetInfoLogARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x594): undefined reference to `pglCreateShaderObjectARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x5db): undefined reference to `pglShaderSourceARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x5e5): undefined reference to `pglCompileShaderARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x5fb): undefined reference to `pglGetObjectParameterivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x616): undefined reference to `pglAttachObjectARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x650): undefined reference to `pglLinkProgramARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x666): undefined reference to `pglGetObjectParameterivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x689): undefined reference to `pglGetInfoLogARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x6d1): undefined reference to `pglUseProgramObjectARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x6e7): undefined reference to `pglGetObjectParameterivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x6fd): undefined reference to `pglGetObjectParameterivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x77a): undefined reference to `pglGetActiveUniformARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x79c): undefined reference to `pglGetUniformLocationARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x7c2): undefined reference to `pglUniform1i'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xb89): undefined reference to `pglGetUniformLocationARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xd03): undefined reference to `pglUseProgram'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xd66): undefined reference to `pglGetInfoLogARB'
ShaderGL.o: In function `DisplayOutput::CShaderUniformGL::SetData(void*, unsigned int)':
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xf25): undefined reference to `pglUniform1fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xf33): undefined reference to `pglUniform2fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xf41): undefined reference to `pglUniform3fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xf4f): undefined reference to `pglUniform4fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xf5d): undefined reference to `pglUniform1ivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xf6b): undefined reference to `pglUniform2ivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xf79): undefined reference to `pglUniform3ivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xf87): undefined reference to `pglUniform4ivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xfb1): undefined reference to `pglUniformMatrix2fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xfbf): undefined reference to `pglUniformMatrix3fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0xfcd): undefined reference to `pglUniformMatrix4fvARB'
ShaderGL.o: In function `DisplayOutput::CShaderUniformGL::Apply()':
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x10af): undefined reference to `pglUniform1ivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x10c3): undefined reference to `pglUniform2ivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x10d7): undefined reference to `pglUniform4ivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x10eb): undefined reference to `pglUniform3ivARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x10ff): undefined reference to `pglUniform1fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x1110): undefined reference to `pglUniform2fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x1121): undefined reference to `pglUniform3fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x1132): undefined reference to `pglUniform4fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x1148): undefined reference to `pglUniformMatrix2fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x115e): undefined reference to `pglUniformMatrix3fvARB'
../DisplayOutput/OpenGL/ShaderGL.cpp:(.text+0x1174): undefined reference to `pglUniformMatrix4fvARB'
TextureFlatGL.o: In function `DisplayOutput::CTextureFlatGL::Upload(Base::CRefCountPtr<DisplayOutput::CImage, Base::CRefCountRep<DisplayOutput::CImage>, DisplayOutput::CImage*>)':
../DisplayOutput/OpenGL/TextureFlatGL.cpp:(.text+0x2ad): undefined reference to `pglCompressedTexImage2DARB'
../DisplayOutput/OpenGL/TextureFlatGL.cpp:(.text+0x35b): undefined reference to `_GLEE_ARB_texture_non_power_of_two'
../DisplayOutput/OpenGL/TextureFlatGL.cpp:(.text+0x360): undefined reference to `GLeeEnabled'
LuaState.o: In function `Base::Script::CLuaState::Init(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)':
../Common/LuaState.cpp:(.text+0x180): undefined reference to `lua_cpcall'
../Common/LuaState.cpp:(.text+0x190): undefined reference to `lua_cpcall'
LuaState.o: In function `Base::Script::Call(lua_State*, char const*, char const*, ...)':
../Common/LuaState.cpp:(.text+0xc48): undefined reference to `lua_tonumber'
../Common/LuaState.cpp:(.text+0xc88): undefined reference to `lua_tonumber'
LuaState.o: In function `Base::Script::docall(lua_State*, int, int)':
../Common/LuaState.cpp:(.text+0xe53): undefined reference to `lua_insert'
../Common/LuaState.cpp:(.text+0xe66): undefined reference to `lua_pcall'
../Common/LuaState.cpp:(.text+0xe73): undefined reference to `lua_remove'
LuaState.o: In function `Base::Script::CLuaState::Run(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)':
../Common/LuaState.cpp:(.text+0xec0): undefined reference to `luaL_loadfile'
../Common/LuaState.cpp:(.text+0xed5): undefined reference to `lua_pcall'
LuaState.o: In function `Base::Script::traceback(lua_State*)':
../Common/LuaState.cpp:(.text+0xff6): undefined reference to `lua_call'
luaxml.o: In function `luaopen_xml(lua_State*)':
../Common/luaxml.cpp:(.text+0x1af): undefined reference to `luaL_register'
c++: error: linker command failed with exit code 1 (use -v to see invocation)

lua-related messages likely mean that lua libs aren't supplied. But where do pglUniform1ivARB, GLeeEnabled, pglXSwapIntervalSGI come from?

[stefantalpalaru]

You need this library: https://sourceforge.net/projects/glee/

[yurivict]

@stefantalpalaru Thank you for the answer.
libglee has some symbols, ex. GLeeEnabled, but not other symbols. For example pglCreateShaderObjectARB is still undefined.

[stefantalpalaru]

Try this patch, although the problem it fixes should manifest at compile time, not link time: stefantalpalaru/gentoo-overlay@e2b3249#diff-46b6606a27533f9f54313ab2603da357

[yurivict]

I tried this patch, but there are still errors.

glx.o: In function `DisplayOutput::CUnixGL::Initialize(unsigned int, unsigned int, bool)':
glx.cpp:(.text+0x57f): undefined reference to `pglXSwapIntervalSGI'
glx.o: In function `DisplayOutput::CUnixGL::toggleVSync()':
glx.cpp:(.text+0xa4a): undefined reference to `pglXSwapIntervalSGI'
ShaderGL.o: In function `DisplayOutput::CShaderGL::~CShaderGL()':
ShaderGL.cpp:(.text+0x4a): undefined reference to `pglDeleteObjectARB'
ShaderGL.cpp:(.text+0x57): undefined reference to `pglDeleteObjectARB'
ShaderGL.cpp:(.text+0x64): undefined reference to `pglDeleteObjectARB'
ShaderGL.o: In function `DisplayOutput::CShaderGL::~CShaderGL()':
ShaderGL.cpp:(.text+0xaa): undefined reference to `pglDeleteObjectARB'
ShaderGL.cpp:(.text+0xb7): undefined reference to `pglDeleteObjectARB'

[stefantalpalaru]

What's the linking part of the make output? Just to make sure you're linking against libGL.so.

Alternatively, scroll up on that last link to see how I disabled V-sync because some Mesa drivers don't have that extension.

[yurivict]

libtool: link: c++ -I/usr/local/include -I/usr/local/include -I/usr/local/include -I/usr/local/include -I/usr/local/include/libgtop-2.0 -I/usr/local/include/glib-2.0 -I/usr/local/lib/glib-2.0/include -I/usr/local/include -I/usr/local/include/lua53 -I/usr/local/include -I/usr/local/include -I/usr/local/include/libpng16 -I/usr/local/include/lua53 -I/usr/local/include -D_THREAD_SAFE -pthread -D__STDC_CONSTANT_MACROS -Wno-write-strings -DHAVE_AVC_VID2=1 -O2 -pipe -fno-omit-frame-pointer -DLINUX_GNU -I/usr/local/include/libavcodec -I/usr/ports/graphics/electricsheep/work/electricsheep-4949c31/client_generic/DisplayOutput/OpenGL -DSHAREDIR=\"/usr/local/share/electricsheep\" -fstack-protector -isystem /usr/local/include -fno-strict-aliasing -fno-omit-frame-pointer -isystem /usr/local/include -fstack-protector -o electricsheep Player.o main.o Voting.o Hud.o Upload.o Download.o Networking.o LoadDDS.o Image.o RendererGL.o glx.o ShaderGL.o TextureFlatGL.o wgl.o FontGL.o mgl.o Shader.o Texture.o Font.o TextureFlat.o Renderer.o LoadPNG.o DisplayOutput.o tinyxmlparser.o tinyxml.o tinystr.o tinyxmlerror.o diriterator.o storage.o luastorage.o ContentDecoder.o SheepUploader.o ContentDownloader.o SheepGenerator.o SheepDownloader.o Sheep.o Shepherd.o LuaState.o Common.o AlignedBuffer.o isaac.o pool.o Log.o Rect.o luaxml.o Exception.o md5.o  -L/usr/local/lib -lavcodec -lavformat -lswscale -lavutil -llua-5.3 -lm -lGLee -lcurl -lpng16 -lz -lgtop-2.0 -lglib-2.0 -lintl -lXrender -lX11 -lrt -lGL -lglut -ltinyxml -lboost_system -lboost_filesystem -lboost_thread -pthread

[stefantalpalaru]

That looks OK. Go ahead and apply the other patch.

[yurivict]

The other patch didn't make any difference either.

It appears that symbols like pglCreateProgramObjectARB should come from libGLee.so, but it doesn't provide them.

[yurivict]

The problem was that GLee is also bundled, and the bundled header declares pglXX symbols, but never defines them. Bundling anything is a very bad idea.