问题
I'm trying to use GLFW on a project, but when I compile it, I get a lot of undefined reference errors, while many of them is on the library file (libglfw.a). I tried both, compile the library and download it, but without success. I'm using MinGW and MSYS running on Windows 7 32-bits on netbeans. The GLFW version is 2.7.3;
These are the errors:
"/usr/bin/make" -f nbproject/Makefile-Debug.mk QMAKE= SUBPROJECTS= .build-conf
make[1]: Entering directory `/c/Users/Raphael/Documents/NetBeansProjects/Prism'
"/usr/bin/make" -f nbproject/Makefile-Debug.mk dist/Debug/MinGW-Windows/prism.exe
make[2]: Entering directory `/c/Users/Raphael/Documents/NetBeansProjects/Prism'
mkdir -p build/Debug/MinGW-Windows
rm -f build/Debug/MinGW-Windows/main.o.d
g++.exe -c -g -MMD -MP -MF build/Debug/MinGW-Windows/main.o.d -o build/Debug/MinGW-Windows/main.o main.cpp
mkdir -p dist/Debug/MinGW-Windows
g++.exe -o dist/Debug/MinGW-Windows/prism build/Debug/MinGW-Windows/main.o build/Debug/MinGW-Windows/ByteBuffer.o -Lexternal -lglfw
build/Debug/MinGW-Windows/main.o: In function `main':
C:\Users\Raphael\Documents\NetBeansProjects\Prism/main.cpp:35: undefined reference to `glMatrixMode@4'
C:\Users\Raphael\Documents\NetBeansProjects\Prism/main.cpp:36: undefined reference to `glLoadIdentity@0'
build/Debug/MinGW-Windows/main.o: In function `Z6renderv':
C:\Users\Raphael\Documents\NetBeansProjects\Prism/main.cpp:56: undefined reference to `glClearColor@16'
C:\Users\Raphael\Documents\NetBeansProjects\Prism/main.cpp:57: undefined reference to `glClear@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(window.o):window.c:(.text+0x8ae): undefined reference to `glClear@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0xe54): undefined reference to `wglGetProcAddress@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0xe6c): undefined reference to `wglGetProcAddress@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0xef6): undefined reference to `wglGetProcAddress@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0xf4f): undefined reference to `wglGetProcAddress@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0xf7f): undefined reference to `wglGetProcAddress@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0x174c): undefined reference to `wglMakeCurrent@8'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0x1935): undefined reference to `wglCreateContext@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0x19fe): undefined reference to `wglMakeCurrent@8'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0x1a0e): undefined reference to `wglDeleteContext@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0x1ea6): undefined reference to `glGetIntegerv@8'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0x1ebc): undefined reference to `glGetFloatv@8'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0x1ed8): undefined reference to `glClearColor@16'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0x1ee7): undefined reference to `glClear@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_window.o):win32_window.c:(.text+0x1f1a): undefined reference to `glClearColor@16'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(glext.o):glext.c:(.text+0x1a): undefined reference to `glGetString@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(glext.o):glext.c:(.text+0x1bf): undefined reference to `glGetIntegerv@8'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(glext.o):glext.c:(.text+0x1ef): undefined reference to `glGetIntegerv@8'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(glext.o):glext.c:(.text+0x28b): undefined reference to `glGetString@4'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(glext.o):glext.c:(.text+0x2cf): undefined reference to `glGetIntegerv@8'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../libglfw.a(win32_glext.o):win32_glext.c:(.text+0x7d): undefined reference to `wglGetProcAddress@4make[2]: Leaving directory `/c/Users/Raphael/Documents/NetBeansProjects/Prism'
make[1]: Leaving directory `/c/Users/Raphael/Documents/NetBeansProjects/Prism'
'
collect2: ld returned 1 exit status
make[2]: *** [dist/Debug/MinGW-Windows/prism.exe] Error 1
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2
CONSTRUIR FALHOU (valor da saída 2, tempo total: 1s)
回答1:
Don't you have to link the OpenGL libs as well? I don't see libGL or libGLU. I know glClear is in either libGL or libGLU.
回答2:
In the linker, at Windows, MinGW: -lglew32 -lglfw3 -lopengl32 -lglu32 -lgdi32
Put the libs and the includes files in MinGW and the dlls and exes at Windows systems folders.
回答3:
In my case the problem was different. I was linking opengl32 in, but still getting the error. The problem turned out to be the library order: glfw has to be linked in before opengl32.
In my case this was in the "Link libraries" listbox in the Code::Blocks IDE, but it's going to be similar in NetBeans or on the command line.
来源：https://stackoverflow.com/questions/9336263/glfw-undefined-references