Add a `CMAKE_FIND_PACKAGE_PREFER_CONFIG` variable to tell
`find_package` calls to look for a package configuration file
first even if a find module is available.
Fixes: #16805, #19236
They are unused, but if someone used them they would lead to
problems since they would copy the internal raw pointers
and the destructor would cause double delete
Suppress some cases in `Source/cmGeneratorExpressionNode.cxx` and
`Source/cmUVHandlePtr.h` where a few older compilers require a
user-defined default constructor (with `{}`).
Teach find_package() to resolve symlinks when constructing
relocatable prefix paths from discovered cmake config files.
The `CMAKE_FIND_PACKAGE_RESOLVE_SYMLINKS` variable enables
this behavior when set to `TRUE`.
Fixes: #18704
Removing FindQt.cmake gives Qt upstream a path forward to export its
own QtConfig.cmake files which can be found by find_package()
without having to explicitly specify CONFIG. Projects that still
want to use Qt3/4 can call find_package(Qt[34]), include(FindQt),
or add FindQt.cmake to their CMAKE_MODULE_PATH.
Run the `clang-format.bash` script to update all our C and C++ code to a
new style defined by `.clang-format`. Use `clang-format` version 6.0.
* If you reached this commit for a line in `git blame`, re-run the blame
operation starting at the parent of this commit to see older history
for the content.
* See the parent commit for instructions to rebase a change across this
style transition commit.
This feature was originally added by commit v3.9.0-rc1~71^2~2 (find_*:
Add a new PackageRoot search path group, 2017-05-03) and documented by
commit v3.9.0-rc1~71^2 (find_*: Add docs for PackageRoot search path
group, 2017-05-03). However, we had to disable the feature and remove
the documentation in commit v3.9.1~2^2 (find_*: Disable the PACKAGE_ROOT
search path group for CMake 3.9, 2017-08-08) due to breaking projects
that used `PackageName_ROOT` variables themselves.
Add policy `CMP0074` to restore the `PackageName_ROOT` variable behavior
in a compatible way. Also revise the stack of root paths to store the
paths themselves rather than the package names. This way the policy can
be considered at the `find_package` call site instead of individual
`find_` calls inside a find module.
Co-Author: Chuck Atkins <chuck.atkins@kitware.com>
Issue: #17144
* Change some functions to take `std::string` instead of
`const char*` in the following classes: `cmMakeFile`, `cmake`,
`cmCoreTryCompile`, `cmSystemTools`, `cmState`, `cmLocalGenerator`
and a few others.
* Greatly reduce using of `const char*` overloads for
`cmSystemTools::MakeDirectory` and `cmSystemTools::RelativePath`.
* Remove many redundant `c_str()` conversions throughout the code.
Some are user facing.
Found using
codespell -q 3 --skip="./Utilities" -I .cmake-whitelist.txt`
whereby the whitelist contained:
ans
dum
helpfull
emmited
emmitted
buil
iff
isnt
nto
ot
pathes
substract
te
todays
upto
whitespaces
We now require C++11 support including `override`. Drop use of
the old compatibility macro. Convert references as follows:
git grep -l CM_OVERRIDE -- '*.h' '*.hxx' '*.cxx' |
xargs sed -i 's/CM_OVERRIDE/override/g'
Disable the feature added by commit v3.9.0-rc1~71^2~2 (find_*: Add a new
PackageRoot search path group, 2017-05-03) and remove documentation
added by commit v3.9.0-rc1~71^2 (find_*: Add docs for PackageRoot search
path group, 2017-05-03). Unfortunately the name `<pkg>_ROOT` may
already be set by projects for their own incompatible purposes. Disable
the behavior change for now to fix the regression for CMake 3.9. We can
restore it later with a policy.
In order to keep the implementation and tests working, add an
undocumented variable we can use in the tests to enable the behavior
before the policy is introduced.
Fixes: #17144
Since commit v3.9.0-rc1~58^2 (find_package: shorten output for missing
package in config mode, 2017-05-09) we print only the one line
- Could NOT find Foo (missing: Foo_DIR)
when package Foo cannot be found in CONFIG mode and it is not REQUIRED.
However, in the case that package configuration files were found but not
used, this one line message leaves out important information. This can
happen when a package configuration file sets `Foo_FOUND` to `FALSE` or
when its package version file does not match the requested version.
Restore the longer message in these cases. Otherwise a seemingly valid
explicit `Foo_DIR` setting appears to be silently ignored even if it was
considered.
Fixes: #17029
If CONFIG or MODULE is given and the package is not REQUIRED,
output a one-liner instead of the full warning.
Update Tests/RunCMake/find_package expected output to match.
The new PackageRoot search path group allows the PackageName_ROOT cmake
and environment variables to be used as search prefixes for all find_*
commands called from within a find module
Comments that indicate a special include order is necessary because
GetCurrentDirectory might get redefined are outdated. Remove those
outdated comments and use the normal ordering of includes.
Detect x32-abi through CMakeCompilerABI infrastruture and use this
information at runtime to determine the correct library paths with
`FIND_LIBRARY_USE_LIBX32_PATHS`.
Fixes: #15994
Clang-tidy reports some issues only from the currently compiled source
file and its associated header file. Separating the compilation of
commands exposed some clang-tidy issues that were not reported previously.
Fix them.
