c - Public flags are not applied to libraries (cmake) -

-

with cmake, apply general flags both executable , libraries.

well, thought use target_compile_options using public keyword. tested on small example executable , static library, both having 1 file (main.c & mylib.c), not work expected.

the root cmakelists.txt looks this:

cmake_minimum_required(version 3.0)  # add library add_subdirectory(mylib)  # create executable add_executable(mytest main.c)  # link library target_link_libraries(mytest mylib)  # add public flags  target_compile_options(mytest public -wall)

and library's cmakelists.txt:

cmake_minimum_required(version 3.0)  add_library(mylib static mylib.c)

the flag -wall applied on main.c , not on library file (mylib.c):

[ 25%] building c object mylib/cmakefiles/mylib.dir/mylib.c.o cd /patsux/programmation/repositories/test-cmake-public/build/mylib && /usr/lib/hardening-wrapper/bin/cc     -o cmakefiles/mylib.dir/mylib.c.o   -c /patsux/programmation/repositories/test-cmake-public/mylib/mylib.c [ 50%] linking c static library libmylib.a [ 25%] building c object cmakefiles/mytest.dir/main.c.o /usr/lib/hardening-wrapper/bin/cc    -wall -o cmakefiles/mytest.dir/main.c.o   -c /patsux/programmation/repositories/test-cmake-public/main.c

now, if flags applied on library instead of executable, work.

# add public flags on library target_compile_options(mylib public -wall)

i get:

[ 25%] building c object mylib/cmakefiles/mylib.dir/mylib.c.o cd /patsux/programmation/repositories/test-cmake-public/build/mylib &&        /usr/lib/hardening-wrapper/bin/cc    -wall -o cmakefiles/mylib.dir/mylib.c.o   -c /patsux/programmation/repositories/test-cmake-public/mylib/mylib.c [ 50%] linking c static library libmylib.a  [ 75%] building c object cmakefiles/mytest.dir/main.c.o /usr/lib/hardening-wrapper/bin/cc    -wall -o cmakefiles/mytest.dir/main.c.o   -c /patsux/programmation/repositories/test-cmake-public/main.c [100%] linking c executable mytest

that makes no sense set general flags such type of target on library.

how can share general flags ? know can use add_definitions(). right way ?

i tested:

set_target_properties(mytest properties compile_flags -wall)

but flags not public.

you can add flag in root file:

add_compile_options(-wall)

or, if using cmake version prior 3.0: 

set(cmake_cxx_flags "${cmake_cxx_flags} -wall")

Comments

Post a Comment

Popular posts from this blog

magento2 - Magento 2 admin grid add filter to collection -

-
i created grid in admin xml ui components. need filter collection via url parameter , dont know how achieve that. tried inject requestinterface collection, filter didnt work. di.xml <virtualtype name="slidelistingdataprovider" type="magento\framework\view\element\uicomponent\dataprovider\dataprovider"> <arguments> <argument name="collection" xsi:type="object" shared="false">xxx\xxx\model\resourcemodel\grid\slide\collection</argument> <argument name="filterpool" xsi:type="object" shared="false">slidelistingfilterpool</argument> <!-- define new object filters --> </arguments> </virtualtype> <virtualtype name="slidelistingfilterpool" type="magento\framework\view\element\uicomponent\dataprovider\filterpool"> <arguments> <argument name="applier...
Read more

Android volley - avoid multiple requests of the same kind to the server? -

-
i using volley upload list of images server. happens within service. once image uploaded remove list. problem arises when internet connection breaks. when internet connection breaks , comes again thinking of adding images yet uploaded request queue. this can result in more 1 copy of same image saved on server request same image might have gone through before getting rseponse. how can address scenario? i'm not quite sure why you're using service schedule requests volley automatically runs it's request in seperate thread. nevertheless can listen both request results, successful , unsuccessful adding listeners. you can remove image list schedule request using volley. if succeeds can carry on desired, if fails can add again list. public static request getimageuploadrequest(final string image) { response.listener<t> responselistener = new response.listener<t>() { @override public void onresponse(t response...
Read more

Combining PHP Registration and Login into one class with multiple functions in one PHP file -

-
i'm trying combine registration, activation , login scripts php website backend script front end developer can pass variables different forms to. my question whether appropriate approach this. don't want have lot of php files different pieces of application developing. far have written following 2 functions login, register , activate user front end developer can call: <?php /** * created phpstorm. * user: karl * date: 26/07/2016 * time: 02:25 */ class users { function register_user($email, $password, $user_name) { $server_name = "localhost"; $u_name = "root"; $db_password = "root"; $db_name = "betamath_graspe"; //email notification variable $from_address="info@slack.com"; //registration form $msg_reg_user='username taken. please choose different username'; $msg_reg_email='email registered'; $msg_reg_active=...
Read more