Impossible to link SDL/GLUT/GLM Ubuntu [duplicate] - c++11

Question

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What is an undefined reference/unresolved external symbol error and how do I fix it?
(39 answers)
Closed 7 years ago.
I actualy work on a openGL projet on my VM but i need openGL 4.5 so i have install ubuntu on my laptop with (GTX 870M) who is compatible 4.5 (i check with glxinfo). But my problem is after install gcc, build-essential, libglew-dev, freeglut3-dev, freeglut3 and SDL2. I can't make my projet i have error like undefined reference on « SDL_WasInit » , « glBegin », .... for all library installed...
i try with makefile like :
ifeq "$(shell uname)" "Darwin"
LIBGL= -framework OpenGL
else
LIBGL= -lGLU -lGL
endif
CXXFLAGS += `pkg-config glew --cflags` `sdl2-config --cflags` -g -W -Wall -Wno-unused-parameter -Wno-deprecated-declarations
LDFLAGS += `pkg-config glew --libs` `sdl2-config --libs` $(LIBGL)
all : main.exe
run : main.exe
./main.exe
main.exe : main.cpp *.h
$(CXX) $(CXXFLAGS) $(LDFLAGS) -o$# main.cpp
sol : main_solution.exe
runs : main_solution.exe
./main_solution.exe
main_solution.exe : main_solution.cpp *.h
$(CXX) $(CXXFLAGS) $(LDFLAGS) -o $# main_solution.cpp
clean :
rm -f *.o *.exe
and with cmakefile like :
cmake_minimum_required(VERSION 3.3)
project(src)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -lglut -lGLU -lGL -lGLEW -lm -lSDL2 -lSDL2main -Wall -g")
set(SOURCE_FILES
"""ALL SOURCE FILES"""")
add_executable(src ${SOURCE_FILES})
This projet (cmakefile and makefile) work fine on my virtual machine ...
I hope you can help me thx.

Answer 1

In CMake you use target_link_libraries to specify which libraries to use. In general you want to use find_package(…) to locate the configuration for a specific library, then use the variables introduced by it to link.
find_package(OpenGL)
add_executable(foo …)
target_link_libraries(foo ${OPENGL_gl_LIBRARY} …)
You should look into the cmake modules that are used by find_package to see what the names of the variables they configure are.