问题
In the CImg Makefile I notice a flag "-lm" I think this points to the m.lib file. But for some reason it cannot find it during the Linking phase. I am compiling the code using the following command:
nvcc -o FilledTriangles FilledTriangles.cu -I.. -O2 -lm -lgdi32
"nvcc" is just the nvidia CUDA compiler. It should function similar to g++
回答1:
-lm refers to "libm.so"
In general, -lXYZ is a way of telling the linker that it should resolve the symbols in your compiled code against libXYZ.so (after locating it, usually in /usr/lib).
来源：https://stackoverflow.com/questions/15218426/using-cimg-lnk1181-cannot-open-file-m-lib-on-windows-7-x64