(Note that I'm an Amazon affiliate and usually make a commission when you make such a purchase which makes me happy and allows me to support my website here. If you're a beginner and want to learn moreabout cmake, you may want to look into getting a book: Mastering CMake. The $"Īnd everything started to work as expected. The PATHS option is used after many other standard cmake searches (THIS IS QUITE IMPORTANT) The "advgetopt" is the name of the library being searched In this case, the find_library() sets the result of the search in the variable named ADVGETOPT_LIBRARY I fixed the search implementation, to make it cleaner as a result, which is not a bad thing, but the problem was a -D on a cmake call that would define the value ahead of time. Today I spent hours trying to find out why one of my find_library() would fail. Now, let's see what happened to me with the find_library() on that day. It is possible to use CMake tool to print all available options: initial configuration. the next project that depends on it will fail a #include if the file was not installed in the distribution folder. Some options can be defined in specific modules. This is so that you can set these on the command line and not have them overridden when the CMake file executes. The syntax for declaring a variable and setting it if it is not already set is: set(MYCACHEVARIABLE 'VALUE' CACHE STRING 'Description') This will not replace an existing value. That way I can at least partially verify that a project installs its header files (i.e. Some variables are already here, like CMAKEBUILDTYPE. That is, instead of trying to install under /usr/include or /usr/local/include or some other magical place, I like to have a distribution folder in under my own /home/alexis folder. This is where I install files while working. In most cases, once I set that one path, that's when things start working as expected. This variable is actually the one which makes things really work well. Without a matching prefix, it somehow gets ignored. The output is printed to a named if given.-help-variable-list List variables with help available and exit. List cache variables will run CMake and list all the variables from the CMake cache that are not marked as INTERNAL or ADVANCED. The cmake-variables(7) manual entry for is printed in a human-readable text format. Instead it is standalone, and linked to the project via the IDFPATH environment variable which holds the path of the esp-idf directory.See CMakes documentation:-LAH List non-advanced cached variables. This variable defines where to search for modules, but only if the prefix matches. You can call the following in your binary output directory: cmake -LH. But 99.9% of the time, these three are enough: Note that there are many other variables that can be used in the search which are listed on this page. The CMake search algorithms are fairely simple, but it feels like each time I try to use them I make a small mistake and something goes wrong.įirst there are three very important variables that are used in the search.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |