yvt 56e4e9e197 CMake: Look for SDL 2.0 specific header files to determine include path
`NO_DEFAULT_PATH` was added in 565eb6b6fd3e6b2c9275490c3c07e585b0942a92.
However this breaks Nixpkgs/NixOS, which installs everything to separate
prefixes and adds compiler flags to supply them.

This commit removes `NO_DEFAULT_PATH`. Instead, it looks for a header
file specific to SDL 2.0 and not in SDL 1.2.
2019-01-01 13:17:10 +09:00
..
2013-08-30 23:58:26 +02:00
2016-12-18 20:00:18 +09:00