This only works due to some assumptions about how the `ENVIRONMENT`
property is processed. Comments have been added to notify anyone
modifying the behavior about where to look.
Fixes: #22819
This makes `versionadded` and `versionchanged` directives show up in
`cmake --help-*` output instead of disappearing (and potentially making
empty sections).
Fixes: #22808
When appending or modifying to a variable that has not been modified
before, the iterator was not valid, but it was used to insert into the
map again. Instead, just use indexing into the map since we know it will
exist by the end of the function anyways.
Fixes: #22796
Revert the changes from commit d5b5c19278 (cmGlobalGenerator:
FindMakeProgram() before CMakeDetermineSystem, 2020-06-15,
v3.19.0-rc1~619^2~3) and commit ef91fb02f3 (cmGlobalGenerator:
FindMakeProgram() at a generator-specific time, 2020-11-23,
v3.19.1~2^2). We must delay selecting the location of MSBuild until
after an instance of Visual Studio has been selected.
It is now safe to revert the ordering because the motivating use
case (sysroot detection in Platform/Android-Determine) has been
implemented another way.
Fixes: #22782
When using the Visual Studio generator for VS 10 or above,
offer this key to get the location of the MSBuild command
before the first `project()` or `enable_language()` command
has finished running.
This will be needed only by one of our own modules, so leave it
undocumented for now.
Since CMake's default compiler flags with MSVC include `-DWIN32` for
historical reasons, a few preprocessor conditions were accidentally
checking for `WIN32` instead of `_WIN32`. The corresponding blocks
were left out when compiling official binaries for `cmake.org` because
we hard-code compiler flags without `-DWIN32`.
Fixes: #22764
Libraries with many repeated transitive dependencies (e.g. Trilinos)
can result in very long runtime dependency call times, especially if
system calls are made more expensive by antivirus software. This
change caches the results of the calls to otool for efficiency.
When merging a new set of uic options with a base set of options,
such as when a source file has a non-empty AUTOUIC_OPTIONS
property, the test for whether to support options starting with
two hyphens was only testing if the Qt major version was exactly
5 rather than at least 5. That had the effect of preventing such
options from being merged correctly when using Qt6, so new and
base options would both be present instead of the single merged
option from the source file properties. Update the version check
and rename function arguments to avoid misrepresenting what
they mean.
Note that uic accepts long option names with a single hyphen too.
See Qt docs for QCommandLineParser::ParseAsLongOptions
for confirmation.
Compilers based on EDG frontend sometimes throw
an internal error while using `this->` at some
circumstances. While it is up to be fixed in future
versions of front end, this bug still occurs in
some modern compilers, such as LCC for Elbrus CPUs,
and probably others (maybe ICC). It caused CMake to be
unbuildable by these compilers. This patch fixes it.
With builds that have many internal library directories or many
external libraries, rpaths can be quite large. The cost of calling
install_name_tool thousands of times can add up to minutes on a build,
especially if virus scanning software is there to help you out. With
this change, instead of deleting and then re-adding an rpath, we ignore
it. Likewise we batch all the rpath adjustment calls into a single command.
Before, installing SCALE (some libraries have 70+ build-time RPATHs that
get deleted, plus up to a dozen external RPATHs from upstream
dependencies that should remain in the binary) would take almost 9
minutes on my laptop, and after this change the installation takes only
30 second.
The changes are part of CMP0128.
When the standard level is unset:
* Flags are added if extension mode doesn't match the compiler's default.
Previously logic only worked if LANG_EXTENSIONS was ON. Fixes#22224.
* The full flag is used. Previously CMAKE_LANG_EXTENSION_COMPILE_OPTION was
used. This was only supported for IAR.
Otherwise:
* Avoid adding flags if not necessary per the detected compiler defaults.
* Fixed check for when the requested standard is older. It now matches the
nearby comments.
I reworded the fallback comment as its logic was a bit difficult to wrap my
head around.
