Add new API for the subdirs command to cmState.
This fixes a regression introduced in commit f716460e (cmMakefile: Move
invokation to initialize snapshot., 2015-10-06).
637c56b4 cmGlobalGenerator: Implement FillProjectMap in terms of cmState.
b3f2299e cmState: Move ProjectName from cmMakefile.
6ce940ac cmMakefile: Use std::string in ProjectName API.
e8c0341d cmMakefile: Out-of-line GetProjectName.
867b5be8 cmLocalGenerator: Remove unused Children member.
6c832219 cmLocalGenerator: Implement child traversal in terms of cmState.
3fcf3837 Makefiles: Remove valueless cast.
223f4a66 cmLocalGenerator: Simplify condition.
ae026f54 cmState: Store Children states in parent state.
59e21ffa Port static calls from cmLocalGenerator to cmOutputConverter.
242dcc2c cmListFileBacktrace: Replace local generator with cmState::Snapshot.
1cff330b cmTarget: Port to cmOutputConverter.
2f1bd62b cmCustomCommandGenerator: Port to cmOutputConverter.
0f2a1324 cmCommandArgumentParserHelper: Port to cmOutputConverter.
4d8b79ad cmComputeLinkInformation: Port to cmOutputConverter.
8680520f cmMakefile: Make the cmState::Snapshot accessible.
6d7abb63 cmOutputConverter: Extract from cmLocalGenerator.
a8244157 cmState::Snapshot: Provide accessor for the cmState.
1f4ef396 cmLocalGenerator: Remove some commented lines of code.
This will be used to contain most of the content of the cmState
in several different trees. Refer to the BuildsystemDirectory
state from the SnapshotData state. Currently these trees have
the same structure, but that will change when we have more snapshot
types.
Don't create a snapshot in Initialize(), but leave the creation
responsibility to the cmake instance instead. Previously, the
cmState would Initialize() in its constructor, and the cmake instance
would re-Initialize() during Configure(). The end result was the
same and there would be one snapshot present. However, cmLocalGenerator
also created a snapshot on construction, and that one was used, leaving
the first snapshot unused, and potential for off-by-one errors.
Fix that by making the cmLocalGenerator use the existing snapshot
if it is top-level. Add a CurrentSnapshot to the cmake instance and
populated it while configuring a directory. This will eventually
replace the 'current local generator' concept. Fix the GetParent
implementation to be able to return the first snapshot.
There is no need to duplicate these in all cmLocalGenerators.
Rename the symbols according to current conventions.
Add explicit calls to Set{Source,Binary}Directory with empty strings
in order to trigger the population of the components containers with
the current working directory in cmLocalGenerator. Having
directories set to empty is a special case in CMake, which is relied
on for the `if(CMAKE_BINARY_DIR)` condition at the end of
CMakeDetermineSystem.cmake.