我正在将应用程序与lflutter_linux_glfw关联。 nm工具显示它具有glad_glTexImage2D：
nm libflutter_linux_glfw.so | grep glTexImage2D
00000000034e87a0 b glad_glTexImage2D
00000000034e87a8 b glad_glTexImage2DMultisample
所以我在lflutter_linux_glfw.so之前加入了flutter_video_renderer.o，我明白了：
clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0
Candidate multilib: .;@m64
Selected multilib: .;@m64
"/usr/bin/ld" -z relro --hash-style=gnu --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o /home/dev/orwell/orwell_flutter/linux/../build/linux/debug/flutter_desktop_example
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0/../../../x86_64-linux-gnu/crt1.o /usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0/../../../x86_64-linux-gnu/crti.o /usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0/crtbegin.o
-L/home/dev/orwell/orwell_flutter/linux/../build/linux/debug/lib -L/usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0 -L/usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0/../../../x86_64-linux-gnu -L/lib/x86_64-linux-gnu
-L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu -L/usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0/../../.. -L/usr/lib/llvm-6.0/bin/../lib -L/lib -L/usr/lib -lflutter_linux_glfw
/home/dev/orwell/orwell_flutter/linux/../build/linux/obj/main.o /home/dev/orwell/orwell_flutter/linux/../build/linux/obj/flutter/generated_plugin_registrant.o
/home/dev/orwell/orwell_flutter/linux/../build/linux/obj//home/dev/orwell/orwell_flutter/linux/flutter/ephemeral/cpp_client_wrapper_glfw/flutter_window_controller.o
/home/dev/orwell/orwell_flutter/linux/../build/linux/obj//home/dev/orwell/orwell_flutter/linux/flutter/ephemeral/cpp_client_wrapper_glfw/plugin_registrar.o
/home/dev/orwell/orwell_flutter/linux/../build/linux/obj//home/dev/orwell/orwell_flutter/linux/flutter/ephemeral/cpp_client_wrapper_glfw/engine_method_result.o
/home/dev/orwell/orwell_flutter/linux/../build/linux/obj//home/dev/orwell/orwell_flutter/linux/flutter/ephemeral/cpp_client_wrapper_glfw/standard_codec.o
/home/dev/orwell/orwell_flutter/linux/../build/linux/obj//home/dev/orwell/orwell_flutter/common/src/flutter_video_renderer.o
/home/dev/orwell/orwell_flutter/linux/../build/linux/obj//home/dev/orwell/orwell_flutter/common/src/flutter_texture_video_renderer.o
/home/dev/orwell/orwell_flutter/linux/../build/linux/obj//home/dev/orwell/orwell_flutter/common/src/flutter_orwell_plugin.o "-rpath=\$ORIGIN/lib" -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0/crtend.o /usr/bin/../lib/gcc/x86_64-linux-gnu/7.4.0/../../../x86_64-linux-gnu/crtn.o
/home/dev/orwell/orwell_flutter/linux/../build/linux/obj//home/dev/orwell/orwell_flutter/common/src/flutter_texture_video_renderer.o: In function
`flutter_orwell_plugin::FlutterTextureVideoRenderer::renderToTexture(unsigned long, unsigned long, unsigned int)':
flutter_texture_video_renderer.cc:(.text+0x1b6): undefined reference to `glad_glTexImage2D'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [/home/dev/orwell/orwell_flutter/linux/../build/linux/debug/flutter_desktop_example] Error 1
换句话说，它抱怨没有引用glad_glTexImage2D，即使它确实存在于
flutter_linux_glfw.so。我还尝试在flutter_linux_glfw.so之后添加flutter_texture_video_renderer.o，但收到相同的错误
答案 0 :(得分：1)
nm libflutter_linux_glfw.so | grep glTexImage2D 00000000034e87a0 b glad_glTexImage2D 00000000034e87a8 b glad_glTexImage2DMultisample
这些符号对于库是 local （不是从库中导出的）。
您可以通过以下方式查看导出的符号列表：
nm -D libflutter_linux_glfw.so
您会发现其中没有列出glad_glTexImage2D。
P.S。
我在flutter_video_renderer.o之前包含了lflutter_linux_glfw.so
这是您应该做的相反顺序：库应该关注引用它们的对象（尽管这对于共享库并不重要） ）。