The change in commit v3.11.3~3^2 (cmSystemTools: Revert GetRealPath
implementation on Windows, 2018-05-29) broke the feature added by commit
v3.11.0-rc1~64^2 (Windows: Add support for running CMake tools through a
symlink, 2018-01-21). Use `GetRealPathResolvingWindowsSubst` in the
latter code path to restore it.
Fixes: #17882
The use of `uv_fs_realpath` introduced by commit v3.11.0-rc1~445^2~1
(cmSystemTools: Implement GetRealPath on Windows, 2017-10-02) causes
`subst` drives to be expanded on Windows, breaking existing use cases.
Revert its use until an alternative implementation can be chosen.
Preserve the behavior introduced by commit v3.11.0-rc1~445^2
(cmTimestamp: For symlinks switch to timestamp of resolved path,
2017-10-02) by retaining use of `uv_fs_realpath` in a function of
a different name.
Fixes: #18033
Issue: #17206
Our custom command generation logic assumes that all command lines have
at least `argv0`. In `add_custom_{command,target}` we already check
that at least a `COMMAND` was given, but using `COMMAND_EXPAND_LISTS` in
combination with a generator expression that expands to an empty string
may produce an empty command line. In this case simply add an empty
string as a command to maintain our internal invariant.
Fixes: #17993
In commit v3.11.0-rc1~433^2~1 (Add support for IMPORTED GLOBAL targets
to be aliased, 2017-09-14) we accidentally dropped the error on calling
`add_library` to alias an imported target that is not globally visible.
The `add_executable` command's equivalent check was properly updated.
Restore the check in `add_library` with the same update. Also fix the
test case accordingly.
Fixes: #17982
In some environments the linker produces warnings like
warning: directory not found for option
warning: object file compiled with -mlong-branch ...
These do not affect the availability of C++ features we're checking,
so filter them out.
Fixes: #17850, #17947
Internally we mark `file(GENERATE)` outputs as `GENERATED` in order
to tell custom command dependency tracing logic not to expect the
files to exist on disk yet. This is because we do not generate the
files until after that tracing is done.
The Ninja generator also interprets the `GENERATED` property to mean
that it is expected that some build rule will generate the file if
another build rule depends on it. If the generator does not know of a
custom command that generates the file then it adds an empty one so that
the `ninja` build tool does not complain about a dependency on a file
that does not exist and has no rule to generate it. However, this step
is not necessary for `file(GENERATE)` outputs because there is no build
rule to generate them and they will exist before `ninja` runs.
Add an additional `__CMAKE_GENERATED_BY_CMAKE` property internally to
tell the Ninja generator that a `GENERATED` file will exist before the
build starts and is not expected to have a build rule producing it.
Fixes: #17942
The change in commit v3.11.0-rc1~480^2 (UseJava: add_jar OUTPUT_DIR
option used only for jar generation, 2017-10-12) added code of the form
`file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR})`. This exposed an existing
bug in `CMAKE_DISABLE_SOURCE_CHANGES` in which it does not recognize
that the top of the build tree itself is in the build tree. Fix that
now.
Fixes: #17933
Since commit v3.11.0-rc1~467^2 (VS,Xcode: Add CMakeLists.txt sources
without mutating targets, 2017-10-18) we do not add `CMakeLists.txt` to
target sources but instead generate references to them directly. This
broke projects that explicitly specify their `CMakeLists.txt` file as a
source file because the explicit entry is no longer consolidated with
the generated one.
Teach the relevant generators to avoid duplicating `CMakeLists.txt`
source references and add test cases.
Fixes: #17828
In commit v3.11.0-rc1~68^2 (CPack: accept --trace and --trace-expand,
2017-12-09) a nullptr dereference was added that occurs when
`cpack -G NotAGenerator` is invoked. Add the needed condition.
Fixes: #17900
Some code paths in `ExpandVariablesInString{New,Old}` were not checking
the `filename` parameter for a null pointer, but this can happen when
using the above flags together. Add the checks and a test case.
Fixes: #17896
The output of moc/uic/rcc used to be discarded unless
the program failed. This lets moc/uic/rcc print their
output to stdout even on success.
Closes#17860
This adds a dedicated mutex for file reading and writing to
cmQtAutoGenerator::FileSystem. The purpose of the change is
to avoid that long files reads block cmsys based path computations,
which are protected by an other mutex.
Refactoring in commit v3.9.0-rc1~156^2 (c++: prefer vectors over lists,
2017-05-04) switched `cmCTestSVN::Repositories` from `std::list` to
`std::vector`. This can cause re-allocation when svn externals are
processed and break the `RootInfo` pointer that is supposed to point at
the first repository element. Switch back to `std::list` so that the
address remains stable.
Fixes: #17854
Revert commit v3.8.0-rc1~305^2 (Remove CTestTestfile.cmake when BUILD_TESTING
is OFF, 2016-11-14) again. We reverted it once in commit v3.8.0-rc3~22^2
(Revert "Remove CTestTestfile.cmake when BUILD_TESTING is OFF", 2017-03-06) but
it was accidentally restored by commit v3.11.0-rc1~387^2 (server: add
"ctestInfo" request to get test info, 2017-10-25), perhaps due to conflict
resolution during rebase.
We cannot remove `CTestTestfile.cmake` when testing is off because it breaks
projects that never enable testing but create their own `CTestTestfile.cmake`
manually instead. Revert the change again and add a test case.
When evaluating include directories during export to a `try_compile`
test project, thread the compile language through to the generator
expression evaluator so it can support `$<COMPILE_LANGUAGE:...>`.
Issue: #17811
When evaluating `INTERFACE_SYSTEM_INCLUDE_DIRECTORIES`, or evaluating
`INTERFACE_INCLUDE_DIRECTORIES` on an imported target, thread the
compile language through to the generator expression evaluator so
that it can support `$<COMPILE_LANGUAGE:...>`.
Fixes: #17811
Calling `std::string::front()` on an empty string results
in an undefined behavior by the C++ standard.
In gcc8 it causes an assertion to fail.
This adds a check to `AUTOGEN` if a file to read is empty
and in case avoids the use of an empty `std::string` buffer.
Closes#17793
In case CMAKE_XCODE_GENERATE_TOP_LEVEL_PROJECT_ONLY has been enabled
generate only the root-level ZERO_CHECK target so targets in
subdirectories pick up the root generator target of ZERO_CHECK.
For the case that CMAKE_XCODE_GENERATE_TOP_LEVEL_PROJECT_ONLY is not
enabled more investigation and a proper and final fix is still needed.
Issue: 14297
