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[jira] [Commented] (PROTON-2254) Relative paths in CMake share
[ https://issues.apache.org/jira/browse/PROTON-2254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17351755#comment-17351755 ]
ASF GitHub Bot commented on PROTON-2254:
----------------------------------------
jiridanek opened a new pull request #317:
URL: https://github.com/apache/qpid-proton/pull/317
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> Relative paths in CMake share
> -----------------------------
>
> Key: PROTON-2254
> URL: https://issues.apache.org/jira/browse/PROTON-2254
> Project: Qpid Proton
> Issue Type: Improvement
> Components: proton-c
> Affects Versions: proton-c-0.31.0
> Environment: Debian Linux; build Proton then Dispatch into each their own `DESTDIR`. This is done by our "layered build" system, https://gitlab.com/arpa2/mkhere/-/blob/master/qpid_proton.sh and https://gitlab.com/arpa2/mkhere/-/blob/master/qpid_dispatch.sh
> Reporter: Rick van Rein
> Priority: Minor
> Labels: cmake, install, proton
> Original Estimate: 0.25h
> Remaining Estimate: 0.25h
>
> This sequency installs well:
> {noformat}
> cmake
> make
> make DESTDIR=/some/where install
> {noformat}
> However, further use of the installation fails, because of strict dependencies on the *installed* paths in files like `ProtonConfig.cmake`:
> {noformat}
> set_target_properties(Proton::core
> PROPERTIES
> IMPORTED_LOCATION "/usr/local/lib/libqpid-proton-core.so"
> IMPORTED_LOCATION_DEBUG "/usr/local/lib/libqpid-proton-core.so"
> INTERFACE_INCLUDE_DIRECTORIES "${Proton_Core_INCLUDE_DIRS}")
> {noformat}
> **What would work:** First switch to the `DESTDIR`, then continue building something like Qpid Dispatch Router.
> **Solution:** Use relative directories, like in:
> {noformat}
> # Compute the installation prefix relative to this file.
> get_filename_component(_IMPORT_PREFIX "${CMAKE_CURRENT_LIST_FILE}" PATH)
> get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH)
> get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH)
> get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH)
> if(_IMPORT_PREFIX STREQUAL "/")
> set(_IMPORT_PREFIX "")
> endif()
> {noformat}
> **Work-around:** An unhappy quickfix is
> {noformat}
> find /some/where -name *.cmake -exec \
> sed -i "s+/usr/+/some/where/usr/+g" {} \;
> {noformat}
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