The Ninja generator and Visual Studio generators are special-cased for the
QtAutogen feature. In order to reduce the number of custom targets, the Visual
Studio generators prefer to create custom commands instead, and in order to
create appropriate Ninja files, generated rcc files are listed as byproducts.
This requires the use of the GetConfigCommonSourceFiles API of the
cmGeneratorTarget for those generators when initializing the autogen target.
The initializer method is called from Compute() after the cmGeneratorTarget
objects are created, however the initialization of the object directory occurs
later in the InitGeneratorTargets method. That means that the resulting object
locations are computed incorrectly and cached before the object directory is
determined, so the generated buildsystem can not find the object files.
The initialization of the object directory was split from the creation of
cmGeneratorTarget instances in commit 0e0258c8 (cmGlobalGenerator: Split
creation of generator object from initialization., 2015-07-25). The motivation
for the split was to do only what is essential to do early in cases where
cmGeneratorTargets need to be created at configure-time. That is required for
the purpose of implementing policies CMP0024 and CMP0026, and for
try_compile(LINK_LIBRARIES). However, the split was not really necessary.
Compute the object directory in the cmGeneratorTarget constructor instead.
The QtAutogen unit test already tests the use of TARGET_OBJECTS with AUTOMOC,
and that test already passes on Ninja. The reason it already passes is that
the QtAutogen target also uses the AUTORCC feature, and specifies several qrc
files in its SOURCES. Later in the Compute algorithm (after the
InitGeneratorTargets call), the rcc files are determined and target->AddSource
is called. The AddSource call clears the previously mentioned cache of source
files, causing it to be regenerated when next queried, this time taking account
of the object directory.
Extend the test suite with a new target which does not make use of AUTORCC with
qrc files so that the test added alone would break without the fix in this
commit.
When we generate a ".rule" file to attach a custom command in a VS IDE
project, set the file timestamp to be old enough to prevent the rule
from re-running due to its timestamp.
Some commands on Windows do not understand forward slash paths and
require backslashes. In order to help projects generate shell
invocations of such commands, provide a generator expression to convert
paths to the shell-preferred path format for the current generator.
This will allow custom commands to generate paths the same way CMake
does for compiler command invocations.
If this policy is WARN, then the ReplaceVariableInString is executed with both
the new algorithm and the OLD slow algorithm. The NEW algorithm should be used
wherever it works.
Ensure that all targets have their _automoc.cpp before attempting
to initialize the autogen target. The initialization evaluates
generator expressions for target sources, and must include the
_automoc.cpp of object library dependents in order for TARGET_OBJECTS
to include the object file for the corresponding _automoc.cpp file.
Extract upstream KWSys using the following shell commands.
$ git archive --prefix=upstream-kwsys/ dc4e4a55 | tar x
$ git shortlog --no-merges --abbrev=8 --format='%h %s' cfeb27cc..dc4e4a55
Ben Boeckel (1):
dd466688 CTestCustom: use list(APPEND)
Domen Vrankar (1):
dc4e4a55 SystemTools: Handle directories in CopyFile{Always,IfDifferent}
Brad King
Stephen Kelly
Kitware Robot
Domen Vrankar
Raffi Enficiaud
Marc Chevrier
Mike Pagel
Stefan Kislinskiy