How to make macbook pro recognize GLEW and GLFW? - macos

Question

I am new to macbook and apple computers in general, so I'm having a hard time making macbook pro recognize GLEW and GLFW. I installed both libraries with no problem, my includes are as follows: /usr/include/GL for glew.h, glxew.h and wglew.h. /usr/lib/ contains libGLEW.a the include and lib files for GLFW are in /usr/local/ I am using vim as a text editor and have a simple main.cpp program but it gives me an error that the glew.h cannot be found, any ideas why this is happening and how should I fix it?
#include <GL/glew.h>
#define GLFW_DLL
#include <GLFW/glfw3.h>
#include <stdio.h>
int main()
{
if (!glfwInit())
{
fprintf (stderr, "ERROR: could not start GLFW\n");
return 1;
}
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
GLFWwindow* window = glfwCreateWindow (640, 480, "Hello Shaders", NULL, NULL);
if (!window)
{ fprintf(stderr, "ERROR: could not openwindow with GLFW3\n");
glgwTerminate();
return 1;
}
glfwMakeContextCurrent (window);
glewExperimantal = GL_TRUE;
glewInit();
const GLubyte* renderer = glGetString(GL_RENDERER);
const GLubyte* version = glGetString(GL_VERSION);
printf("Renderer: %s\n", renderer);
printf("OpenGL version supported %s\n", version);
glEnable (DEPTH_TEST);
glDepthFunc (GL_LESS);
glfwTerminate();
return 0;
}
I am compiling with:
g++ -framework Cocoa -framework OpenGL -framework IOKit -o demo main.cpp -I include -I/sw/include -I/usr/local/include /usr/lib/libGLEW.a /usr/local/lib/libglfw3.a
Edit: moving the GL includes to /usr/local fixed compilation errors but now I get a linker error, any idea what can be done here?
Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin14.0.0
Thread model: posix
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang" -cc1 -triple x86_64-apple-macosx10.10.0 -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name main.cpp -mrelocation-model pic -pic-level 2 -mdisable-fp-elim -masm-verbose -munwind-tables -target-cpu core2 -target-linker-version 241.9 -v -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -I include -I /sw/include -I /usr/local/include -stdlib=libc++ -fdeprecated-macro -fdebug-compilation-dir /Users/yuri13/Documents/shaders -ferror-limit 19 -fmessage-length 80 -stack-protector 1 -mstackrealign -fblocks -fobjc-runtime=macosx-10.10.0 -fencode-extended-block-signature -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -vectorize-slp -o /var/folders/b4/j5zrzg_n7hb205xs22z5f4qc0000gp/T/main-ea70be.o -x c++ main.cpp
clang -cc1 version 6.0 based upon LLVM 3.5svn default target x86_64-apple-darwin14.0.0
ignoring nonexistent directory "include"
ignoring nonexistent directory "/sw/include"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/c++/v1"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/local/include"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/Library/Frameworks"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0/include
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks (framework directory)
End of search list.
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld" -demangle -dynamic -arch x86_64 -macosx_version_min 10.10.0 -syslibroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -o demo -framework Cocoa -framework OpenGL -framework IOKit /var/folders/b4/j5zrzg_n7hb205xs22z5f4qc0000gp/T/main-ea70be.o /usr/lib/libGLEW.a /usr/local/lib/libglfw3.a -lc++ -lSystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0/lib/darwin/libclang_rt.osx.a
Undefined symbols for architecture x86_64:
"_CVDisplayLinkCreateWithCGDisplay", referenced from:
__glfwPlatformGetVideoModes in libglfw3.a(cocoa_monitor.m.o)
__glfwPlatformGetVideoMode in libglfw3.a(cocoa_monitor.m.o)
"_CVDisplayLinkGetNominalOutputVideoRefreshPeriod", referenced from:
_vidmodeFromCGDisplayMode in libglfw3.a(cocoa_monitor.m.o)
"_CVDisplayLinkRelease", referenced from:
__glfwPlatformGetVideoModes in libglfw3.a(cocoa_monitor.m.o)
__glfwPlatformGetVideoMode in libglfw3.a(cocoa_monitor.m.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

If you get an error related to including the header file, the compiler cannot find the header. You can pass the -v flag to GCC (incl. g++) or Clang (incl. clang++) to see information about where it’s looking for it.
As this forum post explains, if you receive these link errors:
Undefined symbols for architecture x86_64:
"_CVDisplayLinkCreateWithCGDisplay", referenced from:
__glfwPlatformGetVideoModes in libglfw3.a(cocoa_monitor.m.o)
__glfwPlatformGetVideoMode in libglfw3.a(cocoa_monitor.m.o)
"_CVDisplayLinkGetNominalOutputVideoRefreshPeriod", referenced from:
_vidmodeFromCGDisplayMode in libglfw3.a(cocoa_monitor.m.o)
"_CVDisplayLinkRelease", referenced from:
__glfwPlatformGetVideoModes in libglfw3.a(cocoa_monitor.m.o)
__glfwPlatformGetVideoMode in libglfw3.a(cocoa_monitor.m.o)
ld: symbol(s) not found for architecture x86_64
Then you probably need to link with the CoreVideo framework. If you’re compiling on the command line, you can use -framework CoreVideo.