[CMake] Get compiler command line (or json compilation database) for a target

[Roman Popov]

After day of googling I've found a solution that almost works for me.

There is a CXX_CLANG_TIDY property that enables clang-tidy on a target.
https://cmake.org/cmake/help/v3.12/prop_tgt/LANG_CLANG_TIDY.html
But I can replace clang-tidy with my own Clang-based tool:

set(CLANG_TIDY_EXE  ${MY_CLANG_BASED_TOOL} )
set(DO_CLANG_TIDY "${CLANG_TIDY_EXE}" " --my-additional-options")

set_target_properties(
        my_exe_target PROPERTIES
        CXX_CLANG_TIDY "${DO_CLANG_TIDY}"
)

The only drawback is that my tool will be run together with my_exe_target
build.  And I want to run it as a separate build target.
https://stackoverflow.com/questions/51618307/how-to-run-clang-based-tool-as-a-separate-cmake-target


пн, 30 июл. 2018 г. в 0:12, Roman Popov <ripopov at gmail.com>:

> Hi all,
>
> How can I get a full compiler command line for a given target in
> CMakeLists project? I want to run Clang-based tool on some targets (using
> CTest), and it requires same options as used during compilation.
>
> I know there is CMAKE_EXPORT_COMPILE_COMMANDS but it is not taget-specific.
>
> There is a similar question on stackoverflow:
> https://stackoverflow.com/questions/35808209/get-full-c-compiler-command-line
> Here author suggets to use get_target_property on a target.  I've tried
> this, but it does not work when some properties are inherited from
> libraries (for example include paths).
>
> Do you have any ideas?
>
> Thanks,
> Roman
>
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