On Tue, Apr 19, 2016 at 4:55 PM, Chaos Zhang <[email protected]> wrote:
> I have read the description of PRE_BUILD before in CMake doc, but when i > use it, i found something confuesed. > (1) In CMakeLists.txt, the content as below： > > (2)After i make the makefile generated by this CMakeLists.txt, i get > result as below: > "3_pre_build" is behind "1_pre_link", if POST_BUILD gets treated as > PRE_LINK, why "3_pre_build" was printed before "1_pre_link"? > It's not the order of the "add_custom_command" commands in CMakeLists.txt which determines in which order they will be invoked. According to the doc: PRE_BUILD − run before all other dependencies PRE_LINK − run after other dependencies POST_BUILD − run after the target has been built So PRE_BUILD comes first and then PRE_LINK and at last POST_BUILD. -clark > > Thanks for you reply, > Chaos Zhang > > > 2016-04-19 15:50 GMT+08:00 Craig Scott-3 [via CMake] <[hidden email] > <http:///user/SendEmail.jtp?type=node&node=7593283&i=0>>: > >> In case it matters, in Clark's suggested code, note that PRE_BUILD is >> only fully honoured with Visual Studio generators. For everything else, it >> gets treated as PRE_LINK, which occurs later (i.e. after compiling all the >> sources rather than before). So it depends on what your "if" test is trying >> to do whether or not this matters in your case. >> >> On Tue, Apr 19, 2016 at 5:24 PM, Clark Wang <[hidden email] >> <http:///user/SendEmail.jtp?type=node&node=7593281&i=0>> wrote: >> >> On Tue, Apr 19, 2016 at 1:15 PM, Chaos Zhang <[hidden email] >>> <http:///user/SendEmail.jtp?type=node&node=7593281&i=1>> wrote: >>> >>>> Hi, >>>> >>>> Is there a way to use Linux command 'if' like this : >>>> <http://cmake.3232098.n2.nabble.com/file/n7593278/2016-04-19_113005.png >>>> > >>>> For i need to execute 'if condition' in make phase rather than cmake >>>> phase. >>>> >>> >>> Try like this: >>> >>> % cat CMakeLists.txt >>> add_custom_target(foo ALL) >>> add_custom_command(TARGET foo >>> PRE_BUILD >>> COMMAND if [ -f bar ]\; then echo yes\; else echo no\; fi) >>> % cmake . >>> % make >>> no >>> Built target foo >>> % touch bar >>> % make >>> yes >>> Built target foo >>> % >>> >>> >>>> Thanks a lot >>>> Chaos Zhang >>>> >>>> >>>> >>>> -- >>>> View this message in context: >>>> http://cmake.3232098.n2.nabble.com/CMake-how-to-use-if-condition-in-command-add-custom-command-tp7593278.html >>>> Sent from the CMake mailing list archive at Nabble.com. >>>> -- >>>> >>>> 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: >>>> http://public.kitware.com/mailman/listinfo/cmake >>>> >>> >>> >>> -- >>> >>> 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: >>> http://public.kitware.com/mailman/listinfo/cmake >>> >> >> >> >> -- >> Craig Scott >> Melbourne, Australia >> http://crascit.com >> >> -- >> >> 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: >> http://public.kitware.com/mailman/listinfo/cmake >> >> ------------------------------ >> If you reply to this email, your message will be added to the discussion >> below: >> >> http://cmake.3232098.n2.nabble.com/CMake-how-to-use-if-condition-in-command-add-custom-command-tp7593278p7593281.html >> To unsubscribe from CMake: how to use 'if condition' in command >> add_custom_command(...), click here. >> NAML >> <http://cmake.3232098.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> >> > > > ------------------------------ > View this message in context: Re: CMake: how to use 'if condition' in > command add_custom_command(...) > <http://cmake.3232098.n2.nabble.com/CMake-how-to-use-if-condition-in-command-add-custom-command-tp7593278p7593283.html> > > Sent from the CMake mailing list archive > <http://cmake.3232098.n2.nabble.com/> at Nabble.com. > > -- > > 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: > http://public.kitware.com/mailman/listinfo/cmake >
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