CMake shouldn't mention CMAKE_PREFIX_PATH if CMAKE_FIND_ROOT_PATH_MODE_PACKAGE is set to ONLY
When CMake fails to find a package, it will display a (in this case, misleading) error:
CMake Error at CMakeLists.txt:23 (find_package): Could not find a package configuration file provided by "OpenSSL" (requested version 1.0.2) with any of the following names:
OpenSSLConfig.cmake openssl-config.cmake
Add the installation prefix of "OpenSSL" to CMAKE_PREFIX_PATH or set "OpenSSL_DIR" to a directory containing one of the above files. If "OpenSSL" provides a separate development package or SDK, be sure it has been installed.
This is very misleading when CMAKE_FIND_ROOT_PATH_MODE_PACKAGE
is set to ONLY
because it will NOT use CMAKE_PREFIX_PATH
.
I think the message should be changed in that case to provide the user a good way to either override the behavior (he probably intended for CMAKE_PREFIX_PATH
to work in the first place if he provided it).