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Am 01.11.2016 um 00:05 schrieb Jack:
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<blockquote
cite="mid:tU7h8i%2Fbq02zQNwtT%2Fh9Nj@6wZ67cZ+VeizFdT1nEZ7c"
type="cite">For Gentoo, if two versions are coinstallable, they
get assigned to different "slots" and in this case, I think the
slot number would easily correspond to the qt version (4 or 5) to
align with other qt and kde packages. Also, as Gentoo is a source
based distro, they really cannot install any files with the same
name, so the base libalkimia.so should go to libalkimia4.so and
libalkimia5.so. (One of them could stay libalkimia.so, but why
not make things consistent if were changing that much anyway?)
<br>
<br>
</blockquote>
<pre wrap="">Collecting all requirements we get the following installation path layout:
Alikima 6.0.90 Qt4: [on a x86_64 system using /usr/local install prefix]
-- Installing: /usr/local/lib64/libalkimia4.so.6.0.90
-- Installing: /usr/local/lib64/libalkimia4.so.6
-- Installing: /usr/local/lib64/libalkimia4.so
-- Installing: /usr/local/lib64/cmake/LibAlkimia4-6.0/LibAlkimia4Targets.cmake
-- Installing: /usr/local/lib64/cmake/LibAlkimia4-6.0/LibAlkimia4Targets-noconfig.cmake
-- Installing: /usr/local/include/alkimia4-6.0/alkimia/alkvalue.h
-- Installing: /usr/local/include/alkimia4-6.0/alkimia/alkquoteitem.h
-- Installing: /usr/local/include/alkimia4-6.0/alkimia/alkcompany.h
-- Installing: /usr/local/include/alkimia4-6.0/alkimia/alk_export.h
-- Installing: /usr/local/lib64/cmake/LibAlkimia4-6.0/LibAlkimia4Config.cmake [1]
-- Installing: /usr/local/lib64/cmake/LibAlkimia4-6.0/LibAlkimia4ConfigVersion.cmake
-- Installing: /usr/local/lib64/cmake/LibAlkimia4-6.0/FindGMP.cmake
-- Installing: /usr/local/lib64/pkgconfig/libalkimia4.pc [2]
[1] with LIBALKIMIA4_INCLUDE_DIR=${PACKAGE_PREFIX_DIR}/include/alkimia4-6.0/ and LIBALKIMIA4_LIBRARIES=${PACKAGE_PREFIX_DIR}/lib64/libalkimia4.so.6.0.90
[2] with includedir=include/alkimia4-6.0 and Libs:-lalkimia4
Alkimia 6.0.90 Qt5: [on a x86_64 system using /usr/local install prefix]
-- Installing: /usr/local/lib64/libalkimia5.so.6.0.90
-- Installing: /usr/local/lib64/libalkimia5.so.6
-- Installing: /usr/local/lib64/libalkimia5.so
-- Installing: /usr/local/lib64/cmake/LibAlkimia5-6.0/LibAlkimia5Targets.cmake
-- Installing: /usr/local/lib64/cmake/LibAlkimia5-6.0/LibAlkimia5Targets-noconfig.cmake
-- Installing: /usr/local/include/alkimia5-6.0/alkimia/alkvalue.h
-- Installing: /usr/local/include/alkimia5-6.0/alkimia/alkquoteitem.h
-- Installing: /usr/local/include/alkimia5-6.0/alkimia/alkcompany.h
-- Installing: /usr/local/include/alkimia5-6.0/alkimia/alk_export.h
-- Installing: /usr/local/lib64/cmake/LibAlkimia5-6.0/LibAlkimia5Config.cmake [1]
-- Installing: /usr/local/lib64/cmake/LibAlkimia5-6.0/LibAlkimia5ConfigVersion.cmake
-- Installing: /usr/local/lib64/cmake/LibAlkimia5-6.0/FindGMP.cmake
-- Installing: /usr/local/lib64/pkgconfig/libalkimia5.pc [2]
[1] with LIBALKIMIA5_INCLUDE_DIR=${PACKAGE_PREFIX_DIR}/include/alkimia5-6.0/ and LIBALKIMIA5_LIBRARIES=${PACKAGE_PREFIX_DIR}/lib64/libalkimia5.so.6.0.90
[2] with includedir=include/alkimia5-6.0 and Libs:-lalkimia5
On the client side this would required to use
if(QT4_FOUND)
find_package(LibAalkimia4)
if(NOT LIBALKIMIA4_FOUND)
find_package(LibAalkimia)
endif()
else()
find_package(LibAalkimia5)
endif()
if(QT4_FOUND)
set(QT_SLOT 4)
else()
set(QT_SLOT 5)
endif()
find_package(LibAalkimia${QT_SLOT})
...
<code>add_executable(<target> ...)
target_link_libraries(<target> Alkimia::alkimia)</code>
BTW: Using the '4' slot has also the advantage to not conflict with the present cmake find module for version 4.3.2 which already results in some detection issues.
If that is accepted I would provide a pull or review request for alkimia with a related patch.
Cheers
Ralf
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