Aaron Turner wrote:
That is not the preferable way to do this. As it hard codes flags into the
CMake file. The way I would do it is:
export CXXFLAGS=-m64
export CFLAGS=-m64
export LDFLAGS=-m64
cmake ../myproject
If those environment variables are set BEFORE you run cmake, then cmake will
put them into the cache correctly.
Couldn't you use the check_c_source_runs() macro to test if your
system supports the -m64 flag? That way you wouldn't need to require
the user to specify it (always fraught with peril).
You could if you always wanted a 64 bit app. It is really up to the
project.
-Bill
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