diff options
Diffstat (limited to 'src/corelib/doc/src/cmake/qt_wrap_cpp.qdoc')
| -rw-r--r-- | src/corelib/doc/src/cmake/qt_wrap_cpp.qdoc | 42 |
1 files changed, 39 insertions, 3 deletions
diff --git a/src/corelib/doc/src/cmake/qt_wrap_cpp.qdoc b/src/corelib/doc/src/cmake/qt_wrap_cpp.qdoc index 8390b81cd3..3b298a9d7e 100644 --- a/src/corelib/doc/src/cmake/qt_wrap_cpp.qdoc +++ b/src/corelib/doc/src/cmake/qt_wrap_cpp.qdoc @@ -2,11 +2,11 @@ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only /*! -\page qt_wrap_cpp.html +\page qt-wrap-cpp.html \ingroup cmake-commands-qtcore \title qt_wrap_cpp -\target qt6_wrap_cpp +\keyword qt6_wrap_cpp \summary {Creates .moc files from sources.} @@ -40,9 +40,23 @@ You can set an explicit \c{TARGET}. This will make sure that the target properties \c{INCLUDE_DIRECTORIES} and \c{COMPILE_DEFINITIONS} are also used when scanning the source files with \c{moc}. +Since Qt 6.8, when a source file is passed to \c{qt_wrap_cpp} instead of a +header file to generate a \c{.moc} file for a target, the \c{TARGET} parameter +is needed to set the correct include path for the generated \c{.moc} file in +the source file. As generated \c{.moc} files are added to the target's +sources by \c{qt_wrap_cpp}, they are not added to \c{<VAR>}. + You can set additional \c{OPTIONS} that should be added to the \c{moc} calls. You can find possible options in the \l{moc}{moc documentation}. +The \c{OPTIONS} can evaluate generator expressions when \c{TARGET} is set. +\note If the \c{OPTIONS} include both generator expressions and special +characters, use variables to implement them. For example, use \c{$<ANGLE-R>}, +\c{$<COMMA>} and \c{$<SEMICOLON>} instead of \c{>}, \c{,} and \c{:}. Otherwise, +the generator expression will not be evaluated correctly. \c {OPTIONS} are +wrapped in generator expressions, so you must escape special characters in +them. + \c{DEPENDS} allows you to add additional dependencies for recreation of the generated files. This is useful when the sources have implicit dependencies, like code for a Qt plugin that includes a \c{.json} file using the @@ -50,5 +64,27 @@ Q_PLUGIN_METADATA() macro. \section1 Examples -\snippet cmake-macros/examples.cmake qt_wrap_cpp +\snippet cmake-macros/examples.cmake qt_wrap_cpp_1 + +In the following example, the generator expressions passed to \c{OPTIONS} +will be evaluated since \c{TARGET} is set. The argument is specified this way to +avoid syntax errors in the generator expressions. + +\snippet cmake-macros/examples.cmake qt_wrap_cpp_2 + +The following example uses \l{https://cmake.org/cmake/help/latest/command/target_compile_definitions.html}{target_compile_definitions} +to set \l{https://cmake.org/cmake/help/latest/prop_tgt/COMPILE_DEFINITIONS.html}{COMPILE_DEFINITIONS} which will be added to +\c{OPTIONS}. + +\snippet cmake-macros/examples.cmake qt_wrap_cpp_4 + +\snippet cmake-macros/examples.cpp qt_wrap_cpp_4 + +In the above file, \c{myapp.moc} is included in \c{myapp.cpp}. +To generate the \c{myapp.moc} file, the \c{qt_wrap_cpp} macro is used with the +\c{TARGET} parameter. The first parameter is empty because the \c{.moc} file +and its path will be added to the target's sources and include directories by +the \c{qt_wrap_cpp} macro. + +\snippet cmake-macros/examples.cmake qt_wrap_cpp_4 */ |