How do I add dependencies to CMake?

How do I add dependencies to CMake?

Adding a third-party dependency

1. Add the version and SHA256 hash to Versions.
2. Add the URL/tarball file to the top of 3rdparty/CMakeLists.
3. Find an appropriate location in 3rdparty/CMakeLists.
4. Use add_library(IMPORTED) to declare an imported target.
5. Use ExternalProject_Add to obtain, configure, and build the library.

What is CMake Add_custom_target?

Add a target with no output so it will always be built. add_custom_target(Name [ALL] [command1 [args1…]] The target has no output file and is always considered out of date even if the commands try to create a file with the name of the target. …

What is Add_custom_command?

add_custom_command(TARGET bar. # Run after sources have been compiled but before linking the binary or running the librarian or archiver tool of a static library.

How do I clear CMake files?

Simply delete the CMakeFiles/ directory inside your build directory. rm -rf CMakeFiles/ cmake –build . This causes CMake to rerun, and build system files are regenerated. Your build will also start from scratch.

What is CMake command?

The cmake command creates many files at your current working directory (CWD, the directory you ran the command from), and among them is a file called Makefile , which has rules about which files to compile/build/copy/write/whatever and how to do it.

What does it mean to add dependencies in CMake?

add_dependencies ( [ ]…) Makes a top-level depend on other top-level targets to ensure that they build before does. A top-level target is one created by one of the add_executable (), add_library (), or add_custom_target () commands (but not targets generated by CMake like install).

How is a custom command generated in CMake?

A target created in the same directory (CMakeLists.txt file) that specifies any output of the custom command as a source file is given a rule to generate the file using the command at build time.

How does CMake depend on other top level targets?

Makes a top-level depend on other top-level targets to ensure that they build before does. A top-level target is one created by one of the add_executable () , add_library (), or add_custom_target () commands (but not targets generated by CMake like install ).

What does add executable do in CMake 3.21?

add_executable( IMPORTED [GLOBAL]) An IMPORTED executable target references an executable file located outside the project. No rules are generated to build it, and the IMPORTED target property is True .