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https://issues.apache.org/jira/browse/PROTON-2738?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nikita Akatiev updated PROTON-2738:
-----------------------------------
Component/s: build
proton-c
> CMake configure fails when trying to override install layout
> ------------------------------------------------------------
>
> Key: PROTON-2738
> URL: https://issues.apache.org/jira/browse/PROTON-2738
> Project: Qpid Proton
> Issue Type: Bug
> Components: build, proton-c
> Reporter: Nikita Akatiev
> Priority: Major
>
> Hi team,
> Here is how I currently build qpid-proton (on RHEL 8.3):
> {noformat}
> ~/qpid-proton/$ rm -rf ./build/ && mkdir ./build/ && cd ./build/
> ~/qpid-proton/build/$ cmake .. -DCMAKE_INSTALL_PREFIX=$HOME/proton
> ~/qpid-proton/build/$ make -j && make install
> {noformat}
> Now, I really wanted to change {{include}} directory to something else in my
> install layout. So, I tried to set {{CMAKE_INSTALL_INCLUDEDIR}} (as per
> [https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html)|https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html)]
> – qpid build ignored it, and even gave me a warning at configuration time:
> {noformat}
> ~/qpid-proton/$ rm -rf ./build/ && mkdir ./build/ && cd ./build/
> ~/qpid-proton/build/$ cmake .. -DCMAKE_INSTALL_PREFIX=$HOME/proton
> -DCMAKE_INSTALL_INCLUDEDIR=include64
> ...
> CMake Warning:
> Manually-specified variables were not used by the project:
> CMAKE_INSTALL_INCLUDEDIR
> ...
> ~/qpid-proton/build/$ make -j && make install
> ...
> ~/qpid-proton/build/$ ls ~/proton
> include lib64 share
> {noformat}
> I browsed through CMakeLists a little bit, found {{INCLUDE_INSTALL_DIR}}
> which sounded like something I would need. Well, I tried to set it and got
> soooo many errors:
> {noformat}
> ~/qpid-proton/build/$ cmake .. -DCMAKE_INSTALL_PREFIX=$HOME/proton
> -DINCLUDE_INSTALL_DIR=include64
> CMake Error in c/CMakeLists.txt:
> Target "qpid-proton" INTERFACE_INCLUDE_DIRECTORIES property contains path:
> "/export/home/nikita.akatiev/qpid-proton/build/include64"
> which is prefixed in the build directory.
> CMake Error in c/CMakeLists.txt:
> Target "qpid-proton" INTERFACE_INCLUDE_DIRECTORIES property contains path:
> "/export/home/nikita.akatiev/qpid-proton/build/include64"
> which is prefixed in the build directory.Target "qpid-proton"
> INTERFACE_INCLUDE_DIRECTORIES property contains path:
> "/export/home/nikita.akatiev/qpid-proton/build/include64"
> which is prefixed in the source directory.
> CMake Error in c/CMakeLists.txt:
> Target "qpid-proton-core" INTERFACE_INCLUDE_DIRECTORIES property contains
> path:
> "/export/home/nikita.akatiev/qpid-proton/build/include64"
> which is prefixed in the build directory.
> {noformat}
> I browsed cache variables just to understand where my include64 value was
> coming into, and found that CMake saved my overriden {{INCLUDE_INSTALL_DIR}}
> as an absolute path to build directory:
> {noformat}
> ~/qpid-proton/build/$ grep include64 CMakeCache.txt
> INCLUDE_INSTALL_DIR:PATH=/export/home/nikita.akatiev/qpid-proton/build/include64
> INSTALL_INCLUDE_DIR:UNINITIALIZED=include64
> {noformat}
> AFAIU this is due to the variable type (PATH) -- it is even a documented
> behaviour for {{set()}} operation:
> [link|https://cmake.org/cmake/help/latest/command/set.html#:~:text=Furthermore%2C%20if%20the%20%3Ctype%3E%20is%20PATH%20or%20FILEPATH%20and%20the%20%3Cvalue%3E%20provided%20on%20the%20command%20line%20is%20a%20relative%20path%2C%20then%20the%20set%20command%20will%20treat%20the%20path%20as%20relative%20to%20the%20current%20working%20directory%20and%20convert%20it%20to%20an%20absolute%20path.].
> As a workaround, explicitly specifying variable type as STRING seems to work
> correctly:
> {noformat}
> ~/qpid-proton/$ rm -rf ./build/ && mkdir ./build/ && cd ./build/
> ~/qpid-proton/build/$ cmake .. -DCMAKE_INSTALL_PREFIX=$HOME/proton
> -DINCLUDE_INSTALL_DIR:STRING=include64
> ...
> ~/qpid-proton/build/$ make -j && make install
> ...
> ~/qpid-proton/build/$ ls ~/proton
> include64 lib64 share
> {noformat}
> Maybe setting {{INCLUDE_INSTALL_DIR}} as a STRING variable here
> https://github.com/apache/qpid-proton/blob/e637082ac62c6caefbc3ac94ef01e98a3c0b5902/CMakeLists.txt#L249
> would help, or you could just use more standard GNUInstallDirs module which
> already handles that.
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