Eclipse CDT + CMake: Eclipse index unable to resolve header files #750
Comments
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I have the same problem with Eclipse 2024-12. But it doesn't find any system includes, and I found no way to configure include paths (as I could when manually creating a C/C++ project that doesn't use CMake). Am I doing something wrong? |
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@betamaxbandit do you think the improvements made in #1000 for CDT 12 help the issues raised here? |
Hi @jonahgraham , Short answer, no. |
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... long answer. I'm not familiar with the type of project being used here. It does not look like a regular CDT CMake project to me; the .cproject file of a CMake project has barely any content and the screenshot on stackoverflow shows a project that looks like an Executable or Standard Build project (it has Build Target node and Includes node). I created a Boost example CDT CMake project [1] and after building the project the Boost header was resolved. This was the case using CDT 11.6 and 12.0. I'll take you through my experience with this. I created a Boost example CDT CMake project [1].
Notice the "Unresolved inclusion..." and the "Symbol ... could not be resolved" markers. These are expected until the project is built. I built the project successfully and the "Unresolved inclusion..." disappeared. I am able to click on a header and Open Declaration F3, which successfully opens header file in the editor.
Sometimes, the other "Symbol ... could not be resolved" markers remain. This is a bug (#376) in CDT and should be fixed!
I can then navigate to source functions, for example F3 on lambda on line 8 shows the Open Declaration dialog.
[1]: Example Boost CDT CMake project
d) Launch Eclipse CDT 12.0.0 and create a new C/C++ project > Empty or Existing CMake project. f) Create a file called CMakeLists.txt and add the following content: g) Build the project using the Launch Bar build button. The project archive is attached here: |
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If the OP still has problems with this, perhaps they can attach an example CDT project which demonstrates the problem. |
Describe the bug
I am using Eclipse 2024-03. I have set it up to build a C++ project with CMake. The build directory and source tree are at the same level. The build works OK. Navigation, code assists, etc are all OK.
The only issue is that the indexer is not able to resolve include files outside the source tree. For example C++/Boost headers.
To Reproduce
Expected behavior
CDT should be able to resolve the header information
Screenshots
See post: https://stackoverflow.com/questions/78241554/eclipse-cmake-eclipse-index-unable-to-resolve-header-files that contains the screenshot of hte issue.
Version Information (please complete the following information):
SUSE Linux Enterperise V12
Eclipse:
Version: 2024-03 (4.31.0)
Build id: 20240307-1437
Additional context
Full .cproject file in my build folder:
Note that the pathentry contains the path to the C++/boost headers (both directories exist and are readable).
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