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| == How to emulate GNU Autotools 'make check' ==
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| Those of you familiar with the GNU Autotools probably know that the <tt>all</tt> target in a Makefile generated by autoconf/automake does not cause a (re)build of your test programs (assuming you've listed them as <tt>check_PROGRAMS</tt>). This is IMHO a very nice feature, because the normal build is not bogged down by the compilation of many test programs, or worse, comes to a grinding halt due to a compilation error in one of the test programs you didn't have time to fix yet. When the time has come to run your test suite, you simply type <tt>make check</tt> and your test programs will be (re)build and run.
| | This page has moved [https://gitlab.kitware.com/cmake/community/wikis/doc/tutorials/EmulateMakeCheck here]. |
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| This feature can be emulated in CMake.
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| ==== Define a custom target ====
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| First you need to define a custom target <tt>check</tt>. You only need to do this once, so doing this in your toplevel <tt>CMakeLists.txt</tt> file is probably a good idea.
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| <pre>
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| add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND})
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| </pre>
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| eg, you could add set(CMAKE_CTEST_COMMAND ctest -V) to see the printouts from the tests.
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| ==== Add a test program ====
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| To add a test program <tt><testprog></tt>, use the following commands
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| <pre>
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| add_executable(<testprog> EXCLUDE_FROM_ALL ...)
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| add_test(<testprog> <testprog>)
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| add_dependencies(check <testprog>)
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| </pre>
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| The option <tt>EXCLUDE_FROM_ALL</tt> is essential here; it causes <tt><testprog></tt> to be ignored when the <tt>all</tt> target is built.
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| ===== Note =====
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| If you organize all your test programs in one directory, you can use the <tt>EXCLUDE_FROM_ALL</tt> option with the <tt>add_subdirectory</tt> command. That way, you don't need to specify this option with every <tt>add_executable</tt> command.
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