# Cmake cannot find glib-object.h

**URL:** https://discourse.cmake.org/t/cmake-cannot-find-glib-object-h/8419
**Category:** Usage
**Created:** [June 27, 2023, 3:24pm UTC](https://discourse.cmake.org/t/cmake-cannot-find-glib-object-h/8419 "2023-06-27T15:24:39Z")
**Posts on this page:** 3
**Page:** 1

<div class="post-metadata">

### Author: ![jardon](https://discourse.cmake.org/user_avatar/discourse.cmake.org/jardon/32/3560_2.png) [@jardon](https://discourse.cmake.org/u/jardon)
#### Post date: [June 27, 2023, 3:24pm UTC](https://discourse.cmake.org/t/cmake-cannot-find-glib-object-h/8419/1 "2023-06-27T15:24:39Z")

</div>

Hello! I am trying to package an upstream project and am running into issues building it in certain environments. I am not well versed in cmake, and am trying to package it without directly modifying the upstream. I have tried many combinations of cmake CLI variables and have been unsuccessful at completing a build. Here is some output from the build process for context

```auto
Executing action                                                                                                                                                                            
:: + cmake /root/parts/corectrl/src -G 'Unix Makefiles' -DCMAKE_EXE_LINKER_FLAGS:STRING=-Wl,--copy-dt-needed-entries -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTING=OFF -DBINARY_PACKAGE_BUILD=ON -DCMAKE_INCLUDE_SYSTEM_FLAG_C=isystem -DCMAKE_INCLUDE_SYSTEM_FLAG_CXX=isystem '-DCMAKE_SYSTEM_PREFIX_PATH=/root/stage/usr;/snap/kf5-5-105-qt-5-15-9-core22-sdk/current/usr/;/usr'                                                                                                                                                                           
:: Using bundled fmt library                                                                                                                                                                
:: Using bundled pugixml library                                                                                                                                                            
:: Using bundled units library                                                                                                                                                              
:: Using bundled easyloggingpp library                                                                                                                                                      
:: D-Bus files will be installed into /root/parts/corectrl/install/usr/share/dbus-1                                                                                                         
:: -- Configuring done                                                                                                                                                                                                                                                                                   
::                                                                                                                                                                                                                                                                                                                                                              
:: -- Generating done                                                                                                                                                                       
:: CMake Warning:                                                                                                                                                                           
:: Manually-specified variables were not used by the project:                                                                                                                             
::                                                                                                                                                                                          
:: BINARY_PACKAGE_BUILD                                                                                                                                                                 
:: CMAKE_INCLUDE_SYSTEM_FLAG_C                                                                                                                                                          
::                                                                                                                                                                                          
::                                                                                                                                                                                          
:: -- Build files have been written to: /root/parts/corectrl/build                                                                                                                          
:: + cmake --build . -- -j16                                                                                                                                                                
:: [0%] Automatic MOC for target corectrl_lib                                                                                                                                             
:: [1%] Automatic MOC for target corectrl_helper                                                                                                                                          
:: [1%] Automatic MOC for target corectrl_helperkiller                                                                                                                                    
:: [1%] Built target corectrl_helperkiller_autogen                                                                                                                                        
:: [1%] Built target corectrl_helper_autogen                                                                                                                                              
:: Consolidate compiler generated dependencies of target corectrl_helperkiller                                                                                                              
:: Consolidate compiler generated dependencies of target corectrl_helper                                                                                                                    
:: [2%] Building CXX object src/helper/CMakeFiles/corectrl_helperkiller.dir/polkit.cpp.o                                                                                                  
:: [2%] Built target corectrl_lib_autogen                                                                                                                                                 
:: [3%] Building CXX object src/helper/CMakeFiles/corectrl_helper.dir/pmon/procpidsolver.cpp.o                                                                                            
:: [3%] Building CXX object src/helper/CMakeFiles/corectrl_helper.dir/polkit.cpp.o                                                                                                        
:: [4%] Building CXX object src/helper/CMakeFiles/corectrl_helper.dir/pmon/processregistry.cpp.o                                                                                          
:: [4%] Building CXX object src/helper/CMakeFiles/corectrl_helper.dir/pmon/nlprocexecmonitor.cpp.o                                                                                        
:: [4%] Building CXX object src/helper/CMakeFiles/corectrl_helper.dir/pmon/nlprocexecsocket.cpp.o                                                                                         
:: [4%] Building CXX object src/helper/CMakeFiles/corectrl_helper.dir/pmon/appregistry.cpp.o                                                                                              
:: [5%] Building CXX object src/helper/CMakeFiles/corectrl_helper.dir/sysctl/sysfswriter.cpp.o                                                                                            
:: [4%] Building CXX object src/helper/CMakeFiles/corectrl_helper.dir/sysctl/msgreceiver.cpp.o                                                                                            
:: [5%] Building CXX object src/helper/CMakeFiles/corectrl_helper.dir/pmon/msgdispatcher.cpp.o                                                                                            
:: In file included from /usr/include/polkit-1/polkit/polkit.h:27,                                                                                                                          
:: from /root/parts/corectrl/src/src/helper/polkit.cpp:7:                                                                                                                  
:: /usr/include/polkit-1/polkit/polkittypes.h:25:10: fatal error: glib-object.h: No such file or directory                                                                                  
:: 25 | #include <glib-object.h>                                                                                                                                                         
:: | ^ ~~~~~~~~~~~~~~                                                                                                                                                         
:: compilation terminated.                                                                                                                                                                  
:: gmake[2]: *** [src/helper/CMakeFiles/corectrl_helper.dir/build.make:104: src/helper/CMakeFiles/corectrl_helper.dir/polkit.cpp.o] Error 1                                                 
:: gmake[2]: *** Waiting for unfinished jobs....                                                                                                                                            
:: In file included from /usr/include/polkit-1/polkit/polkit.h:27,                                                                                                                          
:: from /root/parts/corectrl/src/src/helper/polkit.cpp:7:                                                                                                                  
:: /usr/include/polkit-1/polkit/polkittypes.h:25:10: fatal error: glib-object.h: No such file or directory                                                                                  
:: 25 | #include <glib-object.h>                                                                                                                                                         
:: | ^ ~~~~~~~~~~~~~~                                                                                                                                                         
:: compilation terminated.                                                                                                                                                                  
:: gmake[2]: *** [src/helper/CMakeFiles/corectrl_helperkiller.dir/build.make:104: src/helper/CMakeFiles/corectrl_helperkiller.dir/polkit.cpp.o] Error 1                                     
:: gmake[1]: *** [CMakeFiles/Makefile2:254: src/helper/CMakeFiles/corectrl_helperkiller.dir/all] Error 2                                                                                    
:: gmake[1]: *** Waiting for unfinished jobs....                                                                                                                                            
:: Consolidate compiler generated dependencies of target corectrl_lib                                                                                                                       
:: [5%] Linking CXX shared library libcorectrl.so                                                                                                                                         
:: [91%] Built target corectrl_lib                                                                                                                                                         
:: gmake[1]: *** [CMakeFiles/Makefile2:280: src/helper/CMakeFiles/corectrl_helper.dir/all] Error 2                                                                                          
:: gmake: *** [Makefile:136: all] Error 2                                                                                                                                                   

```

The missing header file is located here `/snap/kf5-5-105-qt-5-15-9-core22-sdk/7/usr/include/glib-2.0/glib-object.h`. What is the correct way to include this header file in the build process?

---

<div class="post-metadata">

### Author: ![ben.boeckel](https://discourse.cmake.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.cmake.org/u/ben.boeckel)
#### Post date: [July 1, 2023, 9:02pm UTC](https://discourse.cmake.org/t/cmake-cannot-find-glib-object-h/8419/2 "2023-07-01T21:02:11Z")

</div>

It appears as though the project in question is using `polkit` which is (probably) found via `pkg-config`. Something is missing to have `pkg-config` find the dependencies and add them to the interface. Within the environment that is doing the build, does querying `pkg-config` for `polkit` bits give back `-I` paths with `glib-object.h` in them? If so, then CMake (either project code or CMake itself) needs to do some work for this case). If it is not, then the environment is not satisfying the `.pc` dependencies properly. Or it’s something else completely.

---

<div class="post-metadata">

### Author: ![jardon](https://discourse.cmake.org/user_avatar/discourse.cmake.org/jardon/32/3560_2.png) [@jardon](https://discourse.cmake.org/u/jardon)
#### Post date: [July 20, 2023, 1:53pm UTC](https://discourse.cmake.org/t/cmake-cannot-find-glib-object-h/8419/3 "2023-07-20T13:53:20Z")

</div>

This turned out to be an issue with some of the tooling overriding the CLI args and was fixed upstream.