moc-ng: a replacement for Qt's moc that is using clang libraries
This is really two project:
* A plugin for clang which removes the needs of running moc
if your code is compiled with this plugin.
* A replacement for moc that aim to be compatible with qt's moc,
but uses the clang libraries for the parsing step.
Read the blog post: http://woboq.com/blog/moc-with-clang.html
BROWSE SOURCE CODE ONLINE:
http://code.woboq.org/mocng/src/
COMPILE:
You need llvm and clang (3.4, 3.5 or 3.6).
Then run cmake and make (adapt your paths)
cmake . -DCMAKE_CXX_COMPILER=/opt/llvm/bin/clang++ -DLLVM_CONFIG_EXECUTABLE=/opt/llvm/bin/llvm-config
make
USE:
* As a binary: replace the moc provided by Qt by the one which is in src/moc
* As a clang plugin: Tell your build system not to run moc, and add this to the CXXFLAGS
-Xclang -load -Xclang /path/to/src/libmocng_plugin.so -Xclang -add-plugin -Xclang moc
PROBLEMS?
Make sure that the Qt include paths (and other include paths) are correctly passed to moc via the -I option
Report bugs on github: https://github.com/woboq/moc-ng/issues
TESTS:
Replace the moc binary in the builddir (qtbase/bin/moc) and run the tests.
Known issue:
* FAIL! : tst_QObject::normalize() 'object.connect(&object, SIGNAL(unsignedlongintSignal(unsigned long int)), SLOT(unsignedlongintSlot(unsigned long int)))' returned FALSE. ()
Because unsigned long int don't have the right metatype according to Qt. And clang looses the "int" in "long int"
* tst_qmetaobjectbuilder
reimplements its own metaobject but still is Q_OBJECT_CHECK which we use to detect it is a QObject
(if moc is in the paths:)
* FAIL! : tst_Moc::warnings
FAIL! : tst_Moc::warnOnExtraSignalSlotQualifiaction
FAIL! : tst_Moc::warnOnMultipleInheritance
FAIL! : tst_Moc::forgottenQInterface
FAIL! : tst_Moc::defineMacroViaCmdline
FAIL! : tst_Moc::warnOnPropertyWithoutREAD
FAIL! : tst_Moc::warnOnVirtualSignal
FAIL! : tst_Moc::notifyError
The wording of the warnings is not the same with moc ng (it is better)
* FAIL! : tst_Moc::ignoreOptionClashes
Small difference in the handling of the options
* FAIL! : tst_Moc::frameworkSearchPath
Not implemented
* FAIL! : tst_Moc::templateGtGt()
the header don't include QObject
* FAIL! : tst_Moc::unterminatedFunctionMacro()
moc -E to preprocess behave differently