问题
When I run cmake-gui and hit configure, I can specify the generator for my project. I can choose Visual Studio solution, Eclipse, makefiles etc...
I am on 64bit system and want to build 64bit application. Till now, I used Visual Studio 10 Win64 generator to generate my solutions. No I want to (have to) build it with makefiles. But there is no options 32b/64b.
Are makefiles for 64bit build used by default (on 64b system) and for 32b only after using something like export CFLAGS=-m32 inside my cmake files?
回答1:
Are makefiles for 64bit build used by default (on 64b system)
Right.
and for 32b only after using something like export CFLAGS=-m32 inside my cmake files?
Right. The relevant variable is called CMAKE_C_FLAGS though.
来源：https://stackoverflow.com/questions/12844012/building-64bit-application-with-makefiles-using-cmake-gui