Quoting "Clark J. Wang" <[EMAIL PROTECTED]>:
The header of many CMake modules often looks like this (take CheckIncludeFile as an example): MACRO(CHECK_INCLUDE_FILE INCLUDE VARIABLE) IF("${VARIABLE}" MATCHES "^${VARIABLE}$") ... ... The IF statement really puzzles me a lot. What is it used to do?
In strings it would mean "if this string is exactly equal to". The caret (^) represents string beginning and the $ represents string end.
Why is IF("${VARIABLE}" MATCHES "^${VARIABLE}$") used instead of IF( ${VARIABLE} STREQUAL ${VARIABLE} ) (which would always return true)? I'm not sure of use case but I'd say it's checking for special characters in VARIABLE.
-- Pau Garcia i Quiles http://www.elpauer.org (Due to my workload, I may need 10 days to answer) _______________________________________________ CMake mailing list CMake@cmake.org http://www.cmake.org/mailman/listinfo/cmake