On Thu, Mar 14, 2019 at 1:13 AM Paul Smith <p...@mad-scientist.net> wrote:
> I have a situation where I've created a custom command to generate .cpp
> files to be compiled (in my case running bison/flex).
>
> I'm using CMake 3.13.4
>
> set(MyParserOutput
> ${OUT_DIR}/MyParser.tab.cpp
> ${OUT_DIR}/MyParser.tab.hpp)
>
> add_custom_target(MyGenParser DEPENDS ${MyParserOutput})
>
> Then I have two different libraries, both depending on this:
>
> add_library(OneLib STATIC ${MyParserOutput} ...)
> add_dependencies(OneLib MyGenparser)
>
>
> add_library(TwoLib STATIC ${MyParserOutput} ...)
> add_dependencies(TwoLib MyGenparser)
>
>
> From add_custom_command()
Do not list the output in more than one independent target that may build
in parallel or the two instances of the rule may conflict (instead use the
add_custom_target()
<https://cmake.org/cmake/help/v3.14/command/add_custom_target.html#command:add_custom_target>
command to drive the command and make the other targets depend on that one)
Removing ${MyParserOutput} from both add_library() should fix the issue.
Best regards,
F
--
Powered by www.kitware.com
Please keep messages on-topic and check the CMake FAQ at:
http://www.cmake.org/Wiki/CMake_FAQ
Kitware offers various services to support the CMake community. For more
information on each offering, please visit:
CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Follow this link to subscribe/unsubscribe:
https://cmake.org/mailman/listinfo/cmake
