Hi, I'm working with add_custom_command and add_custom_target commands as implemented in CMake 2.8.8. For my command and target, I set COMMENT property.
I'd like to understand the actual order in which COMMENT messages are displayed for command vs target. The documentation says: "If COMMENT is set, the value will be displayed as a message before the commands are executed at build time." When I look at the CMake output, the semantic of 'before' is slightly confusing. Here is quick example: $ cat ../CMakeLists.txt cmake_minimum_required (VERSION 2.8) project (Hello) add_custom_command(OUTPUT my.out COMMAND echo "touch my.out" COMMENT "Touching my.out" VERBATIM ) add_custom_target(MyOut ALL DEPENDS my.out COMMENT "Making MyOut" VERBATIM) The custom target depends on custom command. AFAIU, processing order is as follows: 1. The target is built, dependency discovered. 2. The command is built. In details, given the documentation on COMMENT displaying included above, I'd expect this: 1. The target MyOut requested to build 1.1. COMMENT "Making MyOut" is displayed, before building target 1.2. The target MyOUT is built, dependency discovered. 2. The command requested to build: 2.1. COMMENT "Touching my.out" is displayed, before executing command 2.2. COMMAND echo "touch my.out" executed However, actual output of the build looks like this: mloskot build $ cmake ../ ... mloskot build $ make [ 50%] Touching my.out touch my.out [100%] Making MyOut [100%] Built target MyOut mloskot build $ The COMMENT messages are displayed in reverse order than I'd expect according to my interpretation of the manual. I'd also say that the reverse order is counter-intuitive, isn't it? Is my interpretation incorrect or there is anything in my CMakeLists.txt or anywhere? Best regards, -- Mateusz Loskot, http://mateusz.loskot.net -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake