My problem is:
I installed boost from source, everything works fine. CMake finds the library. Then I realized that I need bjam, installed it with apt-get for Ubuntu. This creates a version mismatch. I tried to uninstall the manually installed boost and installed a system package. Big chaos. Cmake can no longer find Boost, I don't understand how to configure it to fix this problem.
Question:
- How do I explicitly tell Cmake to look for the system package boost ?
- Alternative: How do I remove all traces from that manual installation (see below, last paragraph)
Details:
I followed this tutorial to install boost from source:
I followed the easy build instructions : downloaded and extracted the latest source, then ran bootstrap without additional arguments (install dir = default = usr/local) and used sudo b2 install
The sample program (with the regex) ran without problems. Then I hooked up CMake and tested if FindBoost worked. This question shows how to do this:
Worked like a charm, I didn't have to configure the lib and include paths, just used the code from the accepted answer.
Unfortunately I need Boost.Python which has an additional dependency: bjam.
While looking for installation instructions for bjam, I realized that I could just install the Ubuntu package libboost1.58-tools-dev, it contains bjam .
I installed this package and ran the quickstart test example from the downloaded boost source.
The test complained that there was a version mismatch. That's right, I installed 1.61 (latest version) from source. But my system package is 1.58 (that's the bjam version).
Now I tried to delete boost. Apparently you have to do that manually by removing everything boost related from /usr/local.
Then I installed the system package libboost1.58-dev as counterpart to libboost1.58-tools-dev.
This creates a new problem: Cmake can no longer find boost. It complains that the expected version is 1.5, but the given version is 0.0.0
This question (How to link C++ program with Boost using CMake) describes how to configure an alternative path for boost libraries (not the accepted answer). I tried to do the same.
I used this Where does apt-get install libqt4? to find where apt-get put my system boost package. But it only tells me that some files are in usr/include. I can't find the lib files.
SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} /usr/include/boost")
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "/.../boost/lib") <---- this path needs to be setAlso interesting:
I installed Eigen3 as a system package with apt-get, and cmake can find it without any additional configuration.
Therefore I think that there are still traces of that first installation from source. I believe, if I had just installed the Ubuntu boost package from the beginning, I wouldn't have this problem. Is that possible ?
6 Reset to default
