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* Add deprecation warnings for policies CMP0126 and belowBrad King2023-10-031-0/+10
| | | | | | | The OLD behaviors of all policies are deprecated, but only by documentation. Add an explicit deprecation diagnostic for policies introduced in CMake 3.21 and below to encourage projects to port away from setting policies to OLD.
* find_(library|file|path): Drop PATH-derived search prefixesBrad King2023-09-149-66/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | Since commit ffc06c1239 (Teach find_(library|file|path) to get prefixes from PATH, 2015-02-18, v3.3.0-rc1~430^2) we search in `<prefix>/include` and `<prefix>/lib` directories for prefixes with `bin` directories in the `PATH` environment variable. The motivation was to search the installation prefixes of MSYS and MinGW development environments automatically. This behavior can search undesired prefixes that happen to be in the `PATH` for unrelated reasons. It was reverted for non-Windows hosts within a year by commit b30b32a493 (Drop find_(library|file|path) prefixes from PATH on non-Windows, 2016-05-09, v3.6.0-rc1~82^2) but was kept on Windows hosts to support its motivating use case. However, similar problems have since been observed on Windows. For example, commit 955d6245c1 (MSVC: Revert "Teach find_library to consider the 'libfoo.a' naming convention", 2022-11-28, v3.25.1~6^2) was primarily due to undesired discovery of libraries in `PATH`-derived prefixes. Since commit 5e5132e1b1 (MinGW: Search for packages in standard MSYSTEM environment prefixes, 2023-09-11) we search MSYS and MinGW environments' prefixes explicitly, so `PATH`-derived prefixes are no longer needed for the original motivating use case. Fixes: #24216
* MinGW: Search for packages in standard MSYSTEM environment prefixesBrad King2023-09-134-0/+10
| | | | | | | | | | | | | | | | MSYS2 and similar MinGW/MSYS distributions define development environments with a `MSYSTEM` environment variable. Each such environment has a documented installation prefix for its packages, often provided by a `MSYSTEM_PREFIX` environment variable. Since commit 84a25fc263 (cmake_host_system_information: Add MSYSTEM_PREFIX query, 2023-09-08) we can look up this prefix. Add `$MSYSTEM_PREFIX/local` and `$MSYSTEM_PREFIX` to our system search prefixes when targeting MinGW under `MSYSTEM` environments. This is their equivalent to `/usr/local` and `/usr`, which we search by default on UNIX systems. Issue: #24216
* Tests/RunCMake: Update cmake_minimum_required versionsBrad King2023-02-111-1/+1
| | | | | | | | For policy-specific tests, use the version before the policy was introduced. Otherwise, use 3.5 where possible. Also, remove `cmake_minimum_required()` and `project()` calls from individual cases where they are handled by `CMakeLists.txt`.
* find_(program,library,file,path): add validation functionMarc Chevrier2022-06-1413-0/+73
| | | | Fixes: #23603
* find_* commands: add control over Windows registry viewsMarc Chevrier2022-04-2918-0/+260
| | | | Fixes: #22775
* Find: Support per call disabling of CMAKE_INSTALL_PREFIXRobert Maynard2022-04-152-0/+4
| | | | Fixes #23359
* cmake: Add filtered debug-find optionsJohn Parent2021-12-177-0/+100
| | | | | | | | | | Add a `--debug-find-pkg=` option to debug find calls for specific packages. Add a `--debug-find-var=` option to debug find calls for specific return variables. Fixes: #21880
* find_*: Add support for option NO_CACHEMarc Chevrier2021-06-023-0/+150
| | | | | | | | Request that find result is stored in a normal variable rather than a cache entry. Fixes: #20687 Issue: #20743
* MSYS: Add support for running under MSYS runtime environmentOrgad Shaneh2021-04-262-0/+13
| | | | Detect MSYS as CYGWIN, with the required adaptations.
* find_*: Add support for REQUIRED keywordSylvain Joubert2020-03-065-0/+19
| | | | | | In the same spirit as the REQUIRED keyword on find_package, this will stop cmake execution with an error on a failed find_program, find_file, find_path or find_library.
* find_*: Use debug logging infrastructureRobert Maynard2019-12-192-0/+39
| | | | | | Teach the find_package, find_library, find_program, find_path, and find_file commands to print debug log messages when enabled by the `--debug-find` command-line option or `CMAKE_FIND_DEBUG_MODE` variable.
* Merge branch 'backport-find-no-name' into find-no-nameBrad King2019-08-283-0/+4
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| * find_path: Fix crash on empty old-style list of namesBrad King2019-08-283-0/+4
| | | | | | | | Fixes: #19651
* | Find: Provide global controls for the `NO_[]_PATH` call optionsRobert Maynard2019-06-215-0/+53
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* | RunCMake: Automatically support platform out override filesRobert Maynard2019-06-214-6/+12
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* find_path: Fix location of <dir/header.h> in a framework on OS XHarry Mallon2016-06-074-0/+8
| | | | | | | After finding it in `foo.Framework/Headers/dir/header.h`, we should report the `foo.Framework/Headers` directory, not `foo.Framework/Headers/dir`, because the former is what actually contains the path the caller wishes to include.
* Drop find_(library|file|path) prefixes from PATH on non-WindowsBrad King2016-05-091-1/+3
| | | | | | | | | | | Since commit v3.3.0-rc1~430^2 (Teach find_(library|file|path) to get prefixes from PATH, 2015-02-18) we search in <prefix>/include and <prefix>/lib directories for prefixes with bin directories in the PATH environment variable. The motivation was to support MSYS, MinGW and similar Windows platforms in their default environments automatically. At the time this behavior was thought to be worthwhile in general. Suggested-by: Chuck Atkins <chuck.atkins@kitware.com>
* Teach find_(library|file|path) to get prefixes from PATH (#15370)Brad King2015-02-195-0/+18
The find_package command already knows how to compute installation prefixes from PATH. Use the same approach to establish prefixes for find_library, find_file, and find_path to use to look in directories like "<prefix>/lib[/<arch>]" and "<prefix>/include" for libraries and headers. This will reduce the amount of configuration end users need to do to establish a work environment rooted under a specific prefix.
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