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https://issues.apache.org/jira/browse/PROTON-2254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17445849#comment-17445849
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ASF GitHub Bot commented on PROTON-2254:
----------------------------------------
jiridanek commented on a change in pull request #335:
URL: https://github.com/apache/qpid-proton/pull/335#discussion_r752133906
##########
File path: CMakeLists.txt
##########
@@ -276,18 +276,18 @@ set (MAN_INSTALL_DIR share/man CACHE PATH "Manpage
directory")
mark_as_advanced (INCLUDE_INSTALL_DIR LIB_INSTALL_DIR SYSCONF_INSTALL_DIR
SHARE_INSTALL_DIR MAN_INSTALL_DIR)
-# ${PACKAGE_PREFIX_DIR} is expanded from @PACKAGE_INIT@
-# by configure_package_config_file(), and available in ProtonConfig.cmake
-macro (pn_relative_install_dir NAME VALUE)
+# Sets variable NAME to contain relative path from ROOT to VALUE
+# if VALUE is already relative, it does nothing
+macro (pn_relative_install_dir NAME ROOT VALUE)
if (IS_ABSOLUTE ${VALUE})
- message(WARNING "Build was given an absolute path '${VALUE}'. As a result,
`make DESTDIR=... install` will not work.")
- set (${NAME} "${VALUE}")
+ file(RELATIVE_PATH "${NAME}" "${ROOT}" "${VALUE}")
else ()
- set (${NAME} "\${PACKAGE_PREFIX_DIR}/${VALUE}")
+ set (${NAME} "${VALUE}")
endif ()
endmacro ()
-pn_relative_install_dir (INCLUDEDIR ${INCLUDE_INSTALL_DIR})
+pn_relative_install_dir (INCLUDEDIR "${CMAKE_INSTALL_PREFIX}"
"${INCLUDE_INSTALL_DIR}")
+pn_relative_install_dir (LIBDIR "${CMAKE_INSTALL_PREFIX}" "${LIB_INSTALL_DIR}")
Review comment:
When they are being set in the RPM build, they are set in the form of an
absolute path (that is not logic inherent in RPM build, it is what _our_ rpm
build for Fedora/CentOS/RHEL decides to do). If we don't want to have absolute
paths in pc files, then the paths have to be relativized.
`pn_relative_install_dir` passes relative paths unchanged, so when what's
given is already relative, it won't be touched.
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> Relative paths in CMake share
> -----------------------------
>
> Key: PROTON-2254
> URL: https://issues.apache.org/jira/browse/PROTON-2254
> Project: Qpid Proton
> Issue Type: Improvement
> Components: build, cpp-binding, proton-c
> Affects Versions: proton-c-0.31.0
> Environment: Debian Linux; build Proton then Dispatch into each their
> own `DESTDIR`. This is done by our "layered build" system,
> https://gitlab.com/arpa2/mkhere/-/blob/master/qpid_proton.sh and
> https://gitlab.com/arpa2/mkhere/-/blob/master/qpid_dispatch.sh
> Reporter: Rick van Rein
> Assignee: Jiri Daněk
> Priority: Minor
> Labels: cmake, install, proton
> Fix For: proton-c-0.36.0
>
> Original Estimate: 0.25h
> Time Spent: 4h
> Remaining Estimate: 0h
>
> This sequency installs well:
> {noformat}
> cmake
> make
> make DESTDIR=/some/where install
> {noformat}
> However, further use of the installation fails, because of strict
> dependencies on the *installed* paths in files like `ProtonConfig.cmake`:
> {noformat}
> set_target_properties(Proton::core
> PROPERTIES
> IMPORTED_LOCATION "/usr/local/lib/libqpid-proton-core.so"
> IMPORTED_LOCATION_DEBUG "/usr/local/lib/libqpid-proton-core.so"
> INTERFACE_INCLUDE_DIRECTORIES "${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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