Use the following line as a template for your compile command:

gcc -isystem ../ccg_<platform>/asn1 -o gen_value gen_value.c ../ccg_<platform>/asn1/*.c

Just make sure the whole code has been generated for the SDL system, then
replace <platform> with your platform (windows, linux or mac).

On Windows, you might have to replace gcc with mingw32-gcc.
