When building a Qt project, the AUTORCC functionality, by default,
uses the rcc binary to get the contents of a qrc file for
dependency information. This is done at CMake "generate" time.
The problem is that while configuring Qt itself, the rcc binary is
not built yet.
In that case, to get the contents of the qrc file, fall back to
the code branch which uses an ifstream instead of the rcc binary.
In AUTOGEN this replaces simple file name lists with two list (for
headers and sources) of structs with file name and file flags.
The file name lists that are passed to the _autogen target via
AutogenInfo.cmake are filtered from these two lists.
In AUTOGEN a common new base class cmQtAutoGenInitializer::GenVarsT for
mo/uic/rcc generator variables allows to generalize variable computation
functions.
Suppress some cases in `Source/cmGeneratorExpressionNode.cxx` and
`Source/cmUVHandlePtr.h` where a few older compilers require a
user-defined default constructor (with `{}`).
`mocs_compilation.cpp` easily takes a long time to compile when it
contains multiple `moc` files. When it was appended like before
we ran into the situation that all smaller sources were already compiled when
`mocs_compilation.cpp` got compiled at last. In that case a single core was
busy but all remaining cores stayed idle.
To optimize CPU core utilization we now prepend `mocs_compilation.cpp`
to the sources list instead of appending it. This allows smaller source files
to get compiled *while* the long lasting `mocs_compilation.cpp` gets compiled.
Closes#18793
The new ``cmQtAutoGenInitializer::InfoWriter`` class provides an
interface to write strings/vectors/sets/maps in CMake format
into a file. Its use replaces various `cmJoin` calls that
failed to address escaping of semicolons in list elements.
Closes#18554
This teaches CMake the variables
- CMAKE_GLOBAL_AUTOGEN_TARGET
- CMAKE_GLOBAL_AUTOGEN_TARGET_NAME
- CMAKE_GLOBAL_AUTORCC_TARGET
- CMAKE_GLOBAL_AUTORCC_TARGET_NAME
which control the generation of global
``autogen`` and ``autorcc`` targets.
Closes#17721
This adds
- the variable ``CMAKE_AUTOGEN_ORIGIN_DEPENDS`` which initializes
- the target property ``AUTOGEN_ORIGIN_DEPENDS``
which controls whether or not the origin target dependencies
should be forwarded to the corresponding ``_autogen`` target.
The default value of ``CMAKE_AUTOGEN_ORIGIN_DEPENDS`` is ``ON``
which corresponds to the behavior that is in place since CMake 3.9.
Closes: #18493
cmQtAutoGenInitializer::InitCustomTargets and
cmQtAutoGenInitializer::SetupCustomTargets
now return their success value which gets evaluated
and passed on by the caller (cmGlobalGenerator).
Checks for the existance of the moc/uic/rcc
binaries have been introduces in cmQtAutoGenInitializer.
Additionally they get called once with a "-h"
argument to determine if they're functional.
This way any binary-not-found problem is caught
during the configuration phase.
For multi configuration generators AUTOMOC generates the
moc files that are included in `mocs_compilation.cpp`
in `AUTOGEN_BUILD_DIR/include_$<CONFIG>/`. By doing so each
configuration reads different moc files when compiling
`mocs_compilation.cpp`. Since we do not (need to) rewrite
`mocs_compilation.cpp` on a configuration change anymore,
the files also does not need to be recompiled anymore.
Not having to rewrite and recompile `mocs_compilation.cpp`
on a configuration change anymore was the main objective of
this patch.
In a similar fashion AUTORCC generates a `qrc_BASE_CMAKE.cpp`
file below `AUTOGEN_BUILD_DIR/include_$<CONFIG>/` and
`qrc_BASE.cpp` becomes a mere wrapper that includes this
actuall rcc output file (when using multi configuration
generators).
The template files `Modules/AutoRccInfo.cmake.in` and
`Modules/AutogenInfo.cmake.in` were removed in favor
of writing the info `.cmake` files manually.
Closes#17230
