See note in comment; concrete example of build error (when building
syncthingtray against qtforkawesome built with CMake 3.24.0):
```
CMake Error at plasmoid/lib/CMakeLists.txt:15 (find_package):
Found package configuration file:
/usr/share/qtquickforkawesome-git/cmake/qtquickforkawesome-gitConfig.cmake
but it set qtquickforkawesome-git_FOUND to FALSE so package
"qtquickforkawesome-git" is considered to be NOT FOUND. Reason given by
package:
The following imported targets are referenced, but are missing:
qtforkawesome-git
```
Building shared and static libraries at the same time has been removed as
of version 5 so this message would never be printed and it is not clear
anymore what the actual problem was.
This variable was never actually used. I suppose I've been adding it for
places where the config should be added as a prefix. However, this would be
inconsistent and now would also mean a confusing overlap with the
namespacing feature. So let's just remove it.
The config script for adding the target (which is generated
by CMake) otherwise complains that referenced dependencies
are missing. Not sure why this was never a problem. Maybe
the packages were just present anyways or CMake added
additional checks at some point.
* Fix order of arguments
* Keep building static libraries by default to stick with CMake's default
except when devel defaults are enabled and we're targeting GNU/Linux
* Unify code for use_openssl and use_crypto
* Make missing OpenSSL targets a fatal error if OpenSSL is required
* Add note that possibly the devel package is missing
* Under Tumbleweed with missing devel package I've got `OpenSSL_FOUND`
but no imported targets because the symlink from the devel package
was missing. This might be due to stale values within the CMake
cache.
Apparently the current compile check is not sufficient:
```
[ 54s] -- The C compiler identification is GNU 8.2.1
[ 54s] -- The CXX compiler identification is GNU 8.2.1
[ 54s] -- Check for working C compiler: /usr/bin/gcc-8
[ 54s] -- Check for working C compiler: /usr/bin/gcc-8 - works
[ 54s] -- Detecting C compiler ABI info
[ 54s] -- Detecting C compiler ABI info - done
[ 54s] -- Detecting C compile features
[ 54s] -- Detecting C compile features - done
[ 54s] -- Check for working CXX compiler: /usr/bin/g++-8
[ 55s] -- Check for working CXX compiler: /usr/bin/g++-8 - works
…
[ 55s] -- Performing Test COULD_COMPILE_TEST_PROGRAM_0
[ 55s] -- Performing Test COULD_COMPILE_TEST_PROGRAM_0 - Success
[ 55s] -- Linking tageditor against special library for std::filesystem support is not required.
…
[ 109s] FAILED: tageditor
[ 109s] : && /usr/bin/g++-8 -fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -DNDEBUG -O2 -g -DNDEBUG -Wl,--as-needed -Wl,--no-undefined -Wl,-z,now -rdynamic CMakeFiles/tageditor.dir/tageditor_autogen/mocs_compilation.cpp.o CMakeFiles/tageditor.dir/application/main.cpp.o CMakeFiles/tageditor.dir/cli/attachmentinfo.cpp.o CMakeFiles/tageditor.dir/cli/fieldmapping.cpp.o CMakeFiles/tageditor.dir/cli/helper.cpp.o CMakeFiles/tageditor.dir/cli/mainfeatures.cpp.o CMakeFiles/tageditor.dir/application/knownfieldmodel.cpp.o CMakeFiles/tageditor.dir/application/targetlevelmodel.cpp.o CMakeFiles/tageditor.dir/application/settings.cpp.o CMakeFiles/tageditor.dir/gui/fileinfomodel.cpp.o CMakeFiles/tageditor.dir/misc/htmlinfo.cpp.o CMakeFiles/tageditor.dir/misc/utility.cpp.o CMakeFiles/tageditor.dir/gui/attachmentsedit.cpp.o CMakeFiles/tageditor.dir/gui/attachmentsmodel.cpp.o CMakeFiles/tageditor.dir/gui/codeedit.cpp.o CMakeFiles/tageditor.dir/gui/entertargetdialog.cpp.o CMakeFiles/tageditor.dir/gui/mainwindow.cpp.o CMakeFiles/tageditor.dir/gui/minimumemptyspinbox.cpp.o CMakeFiles/tageditor.dir/gui/notificationlabel.cpp.o CMakeFiles/tageditor.dir/gui/notificationmodel.cpp.o CMakeFiles/tageditor.dir/gui/pathlineedit.cpp.o CMakeFiles/tageditor.dir/gui/picturepreviewselection.cpp.o CMakeFiles/tageditor.dir/gui/filefilterproxymodel.cpp.o CMakeFiles/tageditor.dir/gui/initiate.cpp.o CMakeFiles/tageditor.dir/gui/javascripthighlighter.cpp.o CMakeFiles/tageditor.dir/gui/renamefilesdialog.cpp.o CMakeFiles/tageditor.dir/gui/settingsdialog.cpp.o CMakeFiles/tageditor.dir/gui/tagedit.cpp.o CMakeFiles/tageditor.dir/gui/tagfieldedit.cpp.o CMakeFiles/tageditor.dir/gui/tageditorwidget.cpp.o CMakeFiles/tageditor.dir/dbquery/dbquery.cpp.o CMakeFiles/tageditor.dir/dbquery/musicbrainz.cpp.o CMakeFiles/tageditor.dir/dbquery/makeitpersonal.cpp.o CMakeFiles/tageditor.dir/dbquery/lyricswikia.cpp.o CMakeFiles/tageditor.dir/gui/dbquerywidget.cpp.o CMakeFiles/tageditor.dir/misc/networkaccessmanager.cpp.o CMakeFiles/tageditor.dir/renamingutility/filesystemitem.cpp.o CMakeFiles/tageditor.dir/renamingutility/filesystemitemmodel.cpp.o CMakeFiles/tageditor.dir/renamingutility/filteredfilesystemitemmodel.cpp.o CMakeFiles/tageditor.dir/renamingutility/renamingengine.cpp.o CMakeFiles/tageditor.dir/renamingutility/tageditorobject.cpp.o CMakeFiles/tageditor.dir/tageditor_autogen/3YJK5W5UP7/qrc_icons.cpp.o CMakeFiles/tageditor.dir/tageditor_autogen/3YJK5W5UP7/qrc_scripts.cpp.o CMakeFiles/tageditor.dir/tageditor_autogen/JU62CA5L7X/qrc_tageditor_translations.cpp.o -o tageditor /usr/lib64/libqtutilities.so.6.4.1 /usr/lib64/libtagparser.so.10.0.0 /usr/lib64/libQt5Concurrent.so.5.12.7 /usr/lib64/libQt5WebEngineWidgets.so.5.15.3 /usr/lib64/libc++utilities.so.5.10.4 /usr/lib64/libQt5WebEngineCore.so.5.15.3 /usr/lib64/libQt5WebChannel.so.5.12.7 /usr/lib64/libQt5Positioning.so.5.12.7 /usr/lib64/libQt5Quick.so.5.12.7 /usr/lib64/libQt5Qml.so.5.12.7 /usr/lib64/libQt5Network.so.5.12.7 /usr/lib64/libQt5PrintSupport.so.5.12.7 /usr/lib64/libQt5Widgets.so.5.12.7 /usr/lib64/libQt5Gui.so.5.12.7 /usr/lib64/libQt5Core.so.5.12.7 && :
[ 109s] /usr/lib64/gcc/x86_64-suse-linux/8/../../../../x86_64-suse-linux/bin/ld: CMakeFiles/tageditor.dir/cli/mainfeatures.cpp.o: in function `Cli::setTagInfo(Cli::SetTagInfoArgs const&)':
[ 109s] /home/abuild/rpmbuild/BUILD/tageditor-3.4.0/build/../cli/mainfeatures.cpp:889: undefined reference to `std::filesystem::last_write_time(std::filesystem::__cxx11::path const&, std::chrono::time_point<std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >, std::error_code&)'
[ 109s] collect2: error: ld returned 1 exit status
```
For `c++utilities` itself it doesn't seem to matter:
```
[ 33s] -- Performing Test COULD_COMPILE_TEST_PROGRAM_0
[ 35s] -- Performing Test COULD_COMPILE_TEST_PROGRAM_0 - Success
[ 35s] -- Linking c++utilities against special library for std::filesystem support is not required.
…
[ 43s] [22/22] /usr/bin/cmake -E cmake_symlink_library libc++utilities.so.5.10.4 libc++utilities.so.5 libc++utilities.so && :
[ 43s] + RPM_EC=0
```
For some reason the AppImage build doesn't have the problem:
```
[ 77s] -- The C compiler identification is GNU 8.2.1
[ 77s] -- The CXX compiler identification is GNU 8.2.1
[ 77s] -- Check for working C compiler: /usr/bin/gcc-8
[ 77s] -- Check for working C compiler: /usr/bin/gcc-8 -- works
[ 77s] -- Detecting C compiler ABI info
[ 78s] -- Detecting C compiler ABI info - done
[ 78s] -- Detecting C compile features
[ 78s] -- Detecting C compile features - done
[ 78s] -- Check for working CXX compiler: /usr/bin/g++-8
[ 78s] -- Check for working CXX compiler: /usr/bin/g++-8 -- works
[ 78s] -- Detecting CXX compiler ABI info
[ 78s] -- Detecting CXX compiler ABI info - done
[ 78s] -- Detecting CXX compile features
[ 79s] -- Detecting CXX compile features - done
[ 79s] -- Looking for iconv
[ 79s] -- Looking for iconv - found
[ 79s] -- Using iconv from the standard library for target c++utilities.
[ 79s] -- Using std::fstream for NativeFileStream
[ 79s] -- Performing Test COULD_COMPILE_TEST_PROGRAM_0
[ 80s] -- Performing Test COULD_COMPILE_TEST_PROGRAM_0 - Failed
[ 80s] -- Performing Test COULD_COMPILE_TEST_PROGRAM_1
[ 81s] -- Performing Test COULD_COMPILE_TEST_PROGRAM_1 - Success
[ 81s] -- Linking c++utilities against library "-lstdc++fs" for std::filesystem support.
```
Some backend libraries of Syncthing Tray and Reflective RapidJSON only use
certain headers of qtutilities/c++utilities. The current solution did not
really work because it did not distinguish between the build and install
interface and also did not take compile definitions and options into
account.
* Use configuration suffix when installing icons
* Include configuration name suffix in application name
This way differently configured versions of the same applications should be
co-installable within the same prefix. That is useful to install the Qt 6
version of an application alongside the Qt 5 version.
* Remove PNG_ICON_CROP
* Not sure how that was supposed to be useful because even for projects
without PNG_ICON_NO_CROP it does not make much sense
* Test multiple sizes to determine the PNG path automatically
* Locate PNG in basic config so the path is also automatically determined
for the macOS bundle as well
* Log status message when ffmpeg/png2icns are not available
* Format CMake code more nicely
Rely on generator expressions to get the correct filename. This has never
worked because WINDOWS_EXT was usually only set after WindowsResources has
been included.
* Also enable the "lib" prefix which CMake would add by default again; it
has only been removed to preserve compatibility with qmake when switching
from qmake to CMake
* None of these changes are enabled by default to preserve compatibility
The double quotes need to be removed from the doc string. Otherwise, Qt
Creator creates a line like
```
set("EXCLUDE_TESTS_FROM_ALL" "OFF" CACHE "BOOL" "specifies whether to exclude tests from the "all" target (enabled by default)" FORCE)
```
in its `qtcsettings.cmake` which doesn't work because the escaping is
missing.
Some build system macros might pass CMAKE_INSTALL_LIBDIR/LIB_INSTALL_DIR
and LIB_SUFFIX at the same time. I suppose in this case the LIB_SUFFIX
should not be added if it is already present to avoid `lib6464`.
Seems like cmake-format 0.6.7 only applies CLI options
to the first file anymore. So in order to have the options
applied to all files and not just the first one just
invoke it for each file individually.
Martchus
Hannah Rittich