PROJ provides CMake config files when installed with CMake (rather than autotools, as is done in Debian/Ubuntu). Versions older than 8 (which isn't compatible with swri_transform_util) don't install a pkg-config file when installed with CMake. Therefore, the build currently fails to find PROJ on systems where it is install with CMake to a directory other than /usr.
This patch causes all three methods to be tried in sequence, so should be compatible with all these possibilities. I don't see why using find_library() would ever be necessary, but I kept it to maintain compatibility.
danthony06
commented
2 years ago
PROJ provides CMake config files when installed with CMake (rather than autotools, as is done in Debian/Ubuntu). Versions older than 8 (which isn't compatible with
swri_transform_util) don't install a pkg-config file when installed with CMake. Therefore, the build currently fails to find PROJ on systems where it is install with CMake to a directory other than/usr.This patch causes all three methods to be tried in sequence, so should be compatible with all these possibilities. I don't see why using
find_library()would ever be necessary, but I kept it to maintain compatibility.