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* FindThreads: Improve documentationRolf Eike Beer2020-03-161-16/+29
| | | | Issue: #19823
* FindThreads: Add pthread_cancel to program to test for pthreads in libcCristian Morales Vega2019-12-111-0/+1
| | | | | | | | | When using ThreadSanitizer our existing CMAKE_HAVE_LIBC_PTHREAD test program links using symbols from the tsan library. Among the symbols not provided by that library, `pthread_cancel()` seems to be the less risky symbol to add to the check. Fixes: #19981
* Merge topic 'FindThreads-lib-flag'Brad King2019-12-051-4/+4
|\ | | | | | | | | | | | | f7ffefea7c FindThreads: Restore hard-coded '-l' flag on library name Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !4112
| * FindThreads: Restore hard-coded '-l' flag on library nameBrad King2019-12-041-4/+4
| | | | | | | | | | | | | | | | Revert commit de5f123d3a (FindThreads: Do not hard-code '-l' flag on library name, 2019-09-23, v3.16.0-rc1~71^2). Some clients depend on the value of `CMAKE_THREAD_LIBS_INIT` to contain a valid flag. Fixes: #20061, #20065
* | Refactor: Use added message types in various modulesAlex Turbov2019-11-021-3/+3
|/ | | | Co-Authored-By: Craig Scott <craig.scott@crascit.com>
* FindThreads: Do not hard-code '-l' flag on library nameAlan W. Irwin2019-09-231-4/+4
| | | | | | | | | | | | When not using the `-pthread` flag we instead return a library to link by name. Previously we hard-coded the `-l` flag before the library name. When used with `target_link_libraries`, the hard-coded `-l` flag is preserved rather than transformed into the link option preferred by the toolchain in use. Drop the explicit `-l` part to let CMake's generators produce the proper way to link the threads library for the current toolchain. Fixes: #19747
* Merge topic 'FindThreads-doc-c++'Brad King2019-05-281-3/+0
|\ | | | | | | | | | | | | a38b63c1bb FindThreads: Drop incorrect docs about usage with C++ Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !3391
| * FindThreads: Drop incorrect docs about usage with C++Brad King2019-05-281-3/+0
| | | | | | | | | | | | | | | | Drop the sentence added by commit 5a5a1d90f0 (Help: FindThreads not needed with modern C++., 2019-01-09, v3.14.0-rc1~186^2) about not needing the module with modern C++. The module is often still needed. Fixes: #19297
* | FindThreads: Fix pthread library check in GHS Multi GeneratorNaren Manimohan2019-03-211-0/+3
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* | FindThreads: Use complete program to test for pthreads in libcJerryShih2019-03-061-6/+35
|/ | | | | | | | | | | | | | | Our check for just `pthread_create` is not sufficient because there are cases where that symbol may be found in libc but not all of pthreads. We first tried to address this in commit e9a1ddc594 (FindThreads: Replace the pthread symbol checking in libc., 2018-11-18, v3.14.0-rc1~292^2) by switching to `pthread_kill`, but that had to be reverted by commit 18320230ec (FindThreads: Revert libc symbol check to pthread_create, 2019-02-27, v3.14.0-rc3~6^2) because there are other cases where `pthread_kill` is in libc but the rest of pthreads is not. Update our check to try a complete program using pthreads as an actual application might. Fixes: #18994
* FindThreads: Revert libc symbol check to pthread_createBrad King2019-02-271-13/+3
| | | | | | | | | | | | | Since commit e9a1ddc594 (FindThreads: Replace the pthread symbol checking in libc., 2018-11-18, v3.14.0-rc1~292^2) we check libc for `pthread_kill` instead of `pthread_create`. However, on FreeBSD `pthread_kill` is in libc but not `pthread_create`. Discussion in the original merge request for the above commit also considered `pthread_key_create`, `pthread_self`, and `pthread_attr_init`. Every symbol seems to have some reason it is not an appropriate choice. Revert to the pre-3.14 behavior of using `pthread_create` pending further investigation.
* FindThreads: Fix libc check to use proper header for pthread_killBrad King2019-02-261-2/+4
| | | | | | | | | | | In commit e9a1ddc594 (FindThreads: Replace the pthread symbol checking in libc., 2018-11-18, v3.14.0-rc1~292^2) we switched to checking for `pthread_kill` in libc but did not update the symbol check's header file to match. Add `signal.h` to get `pthread_kill`. Keep `pthread.h` anyway since the purpose of the check is to verify that the pthread API works. Fixes: #18984
* Help: FindThreads not needed with modern C++.Joachim Wuttke (o)2019-01-091-1/+4
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* FindThreads: Drop IRIX-specific options and resultsBrad King2018-12-071-61/+43
| | | | | | | | | We do not need to support IRIX anymore, so drop relevant parts. In particular, the `CMAKE_THREAD_PREFER_PTHREAD` is frequently confused with `THREADS_PREFER_PTHREAD_FLAG`. Also remove references to the IRIX-specific options and results from other modules and tests.
* FindThreads: Replace the pthread symbol checking in libc.JerryShih2018-12-031-4/+12
| | | | | | | With asan build, we will have the pthread_create() symbol in libc. However, libasan doesn't have full pthread implementation. We can't assume that we have the pthread implementation in libc using pthread_create() symbol. Replace the pthread_create() with pthread_kill() as a quick fix.
* Merge topic 'cuda-thread-flags'Brad King2018-10-251-1/+3
|\ | | | | | | | | | | | | | | | | | | | | 2cc050b53b CUDA: Add test for device linking when host linking uses threads 83c13ca44f FindThreads: Pass -pthread to CUDA compiler through -Xcompiler cf92fd9ae9 Merge branch 'cuda-filter-device-link-items' into cuda-thread-flags e768d96c74 CUDA: Filter out host link flags during device linking Acked-by: Kitware Robot <kwrobot@kitware.com> Acked-by: Kelly (KT) Thompson <kgt@lanl.gov> Merge-request: !2512
| * FindThreads: Pass -pthread to CUDA compiler through -XcompilerRolf Eike Beer2018-10-241-1/+3
| | | | | | | | Fixes: #18008
* | Help: Convert remaining modules to block-style commentsKitware Robot2018-10-221-38/+39
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* FindThreads: Drop try_run to improve cross-compiling supportSteffen Dettmer2017-08-301-11/+4
| | | | | | | | | | | Use `try_compile` instead of `try_run`. It is not clear why `try_run` was ever needed, and it does not work during cross-compiling. Update the check's source file to remove code associated with actually running things. Also remove the ancient `__CLASSIC_C__` code path and use a simple `int main(void)` as in `Modules/CheckIncludeFile.c.in`. Fixes: #16920
* Simplify CMake per-source license noticesBrad King2016-09-271-14/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
* Fix spelling typos in comments and documentation (#16037)Felix Geyer2016-03-291-1/+1
| | | | | The Debian package checker tool (lintian) detected several typos in CMake.
* FindThreads: make the call to try_run() work also if only C++ is enabledRolf Eike Beer2015-09-251-1/+8
| | | | This isn't enough to make the whole module work with only C++ enabled.
* FindThreads: replace CheckIncludeFiles by CheckIncludeFileRolf Eike Beer2015-09-251-3/+15
| | | | | | While at it, also add a branch using CheckIncludeFileCXX. Also give a better error message if no supported language is enabled. C++ support isn't working yet, but it has never worked.
* FindThreads: introduce THREADS_PREFER_PTHREAD_FLAG (#14767)Rolf Eike Beer2014-10-081-0/+18
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* FindThreads: introduce an imported target to link toTimo Rothenpieler2014-10-081-0/+18
| | | | | | This not only holds the library, but can also hold compiler flags needed, e.g. the -pthread flag preferred by gcc on some platforms. There was no clean way to get that compiler flag from the module until now.
* FindThreads: move checking of the -pthread compiler flag into a macroRolf Eike Beer2014-10-061-36/+42
| | | | | | This allows a following commit to introduce a switch to prefer that check over searching for the explicit library names without breaking backward compatibility.
* Merge topic 'FindThreads-macro'Brad King2014-10-061-23/+17
|\ | | | | | | | | 94a061d3 FindThreads: use a macro for the repetitive thread library checks
| * FindThreads: use a macro for the repetitive thread library checksRolf Eike Beer2014-10-031-23/+17
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* | FindThreads: search test source relative to moduleTimo Rothenpieler2014-10-021-1/+1
|/ | | | This is a simpler way to reference the location of FindThreads.cmake.
* Use CMAKE_SYSTEM_NAME instead of CMAKE_SYSTEM where sufficientRolf Eike Beer2014-04-141-3/+3
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* Remove .* expressions from beginning and end of MATCHES regexsRolf Eike Beer2014-04-141-2/+2
| | | | | | | | | All these expressions work the same: "foo" ".*foo.*" "^.*foo.*$" This assumes that the "Intel*" expressions were meant to be "Intel.*".
* Find*: Make find_package(.. QUIET) affect Check* modules.Clinton Stimpson2014-03-301-0/+3
| | | | | | | | | | Fixes issues #14812 and #14813 where find_package(OpenMP QUIET) and find_package(Qt4 QUIET) would still print out messages when calling check*() functions. Also a partial fix for #14445 where building CMake (without cmake-gui) when Qt5 is installed and Qt4 is not installed and warnings come out of FindQt4.cmake.
* FindThreads: simplify checking for SunOSRolf Eike Beer2014-03-251-1/+1
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* FindThreads: avoid useless checks if a thread library is already foundRolf Eike Beer2014-03-251-16/+15
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* FindThreads: replace MATCHES with STREQUALRolf Eike Beer2014-03-251-1/+1
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* Convert builtin help to reStructuredText source filesKitware Robot2013-10-151-7/+19
| | | | | | | | Run the convert-help.bash script to convert documentation: ./convert-help.bash "/path/to/CMake-build/bin" Then remove it.
* replace string(... MATCHES "^const$) with string(... STREQUAL "const")Rolf Eike Beer2013-06-021-1/+1
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* Remove CMake-language block-end command argumentsKitware Robot2012-08-131-8/+8
| | | | | | | | | | | | | | | | | Ancient versions of CMake required else(), endif(), and similar block termination commands to have arguments matching the command starting the block. This is no longer the preferred style. Run the following shell code: for c in else endif endforeach endfunction endmacro endwhile; do echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/' done >convert.sed && git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' | egrep -z -v '^(Utilities/cm|Source/kwsys/)' | egrep -z -v 'Tests/CMakeTests/While-Endwhile-' | xargs -0 sed -i -f convert.sed && rm convert.sed
* Convert CMake-language commands to lower caseKitware Robot2012-08-131-94/+94
| | | | | | | | | | | | | | | | | Ancient CMake versions required upper-case commands. Later command names became case-insensitive. Now the preferred style is lower-case. Run the following shell code: cmake --help-command-list | grep -v "cmake version" | while read c; do echo 's/\b'"$(echo $c | tr '[:lower:]' '[:upper:]')"'\(\s*\)(/'"$c"'\1(/g' done >convert.sed && git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' | egrep -z -v '^(Utilities/cm|Source/kwsys/)' | xargs -0 sed -i -f convert.sed && rm convert.sed
* Remove trailing whitespace from most CMake and C/C++ codeKitware Robot2012-08-131-4/+4
| | | | | | | | | | | | | | | | | Our Git commit hooks disallow modification or addition of lines with trailing whitespace. Wipe out all remnants of trailing whitespace everywhere except third-party code. Run the following shell code: git ls-files -z -- \ bootstrap doxygen.config '*.readme' \ '*.c' '*.cmake' '*.cpp' '*.cxx' \ '*.el' '*.f' '*.f90' '*.h' '*.in' '*.in.l' '*.java' \ '*.mm' '*.pike' '*.py' '*.txt' '*.vim' | egrep -z -v '^(Utilities/cm|Source/(kwsys|CursesDialog/form)/)' | egrep -z -v '^(Modules/CPack\..*\.in)' | xargs -0 sed -i 's/ \+$//'
* FindThreads: Try pthreads with no special option first (#11333)Rolf Eike Beer2012-01-211-19/+28
| | | | | | | QNX has the phtread stuff in the standard library. The best way would IMHO be to check if a program that uses pthread_* can be successfully linked without specifying any linker option before trying out the different flags.
* Revert "FindThreads: Try pthreads with no special option first (#11333)"David Cole2011-09-201-28/+19
| | | | This reverts commit fd61be71401ef9e0a241562fc31539273084deff.
* FindThreads: Try pthreads with no special option first (#11333)Rolf Eike Beer2011-08-201-19/+28
| | | | | | | QNX has the phtread stuff in the standard library. The best way would IMHO be to check if a program that uses pthread_* can be successfully linked without specifying any linker option before trying out the different flags.
* Modules: Include builtin FindPackageHandleStandardArgs directlyBrad King2011-01-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The FindPackageHandleStandardArgs module was originally created outside of CMake. It was added for CMake 2.6.0 by commit e118a627 (add a macro FIND_PACKAGE_HANDLE_STANDARD_ARGS..., 2007-07-18). However, it also proliferated into a number of other projects that at the time required only CMake 2.4 and thus could not depend on CMake to provide the module. CMake's own find modules started using the module in commit b5f656e0 (use the new FIND_PACKAGE_HANDLE_STANDARD_ARGS in some of the FindXXX modules..., 2007-07-18). Then commit d358cf5c (add 2nd, more powerful mode to find_package_handle_standard_args, 2010-07-29) added a new feature to the interface of the module that was fully optional and backward compatible with all existing users of the module. Later commit 5f183caa (FindZLIB: use the FPHSA version mode, 2010-08-04) and others shortly thereafter started using the new interface in CMake's own find modules. This change was also backward compatible because it was only an implementation detail within each module. Unforutnately these changes introduced a problem for projects that still have an old copy of FindPackageHandleStandardArgs in CMAKE_MODULE_PATH. When any such project uses one of CMake's builtin find modules the line include(FindPackageHandleStandardArgs) loads the copy from the project which does not have the new interface! Then the including find module tries to use the new interface with the old module and fails. Whether this breakage can be considered a backward incompatible change in CMake is debatable. The situation is analagous to copying a standard library header from one version of a compiler into a project and then observing problems when the next version of the compiler reports errors in its other headers that depend on its new version of the original header. Nevertheless it is a change to CMake that causes problems for projects that worked with previous versions. This problem was discovered during the 2.8.3 release candidate cycle. It is an instance of a more general problem with projects that provide their own versions of CMake modules when other CMake modules depend on them. At the time we resolved this instance of the problem with commit b0118402 (Use absolute path to FindPackageHandleStandardArgs.cmake everywhere, 2010-09-28) for the 2.8.3 release. In order to address the more general problem we introduced policy CMP0017 in commit db44848f (Prefer files from CMAKE_ROOT when including from CMAKE_ROOT, 2010-11-17). That change was followed by commit ce28737c (Remove usage of CMAKE_CURRENT_LIST_DIR now that we have CMP0017, 2010-12-20) which reverted the original workaround in favor of using the policy. However, existing project releases do not set the policy behavior to NEW and therefore still exhibit the problem. We introduced in commit a364daf1 (Allow users to specify defaults for unset policies, 2011-01-03) an option for users to build existing projects by adding -DCMAKE_POLICY_DEFAULT_CMP0017=NEW to the command line. Unfortunately this solution still does not allow such projects to build out of the box, and there is no good way to suggest the use of the new option. The only remaining solution to keep existing projects that exhibit this problem building is to restore the change originally made in commit b0118402 (Use absolute path to FindPackageHandleStandardArgs.cmake everywhere, 2010-09-28). This also avoids policy CMP0017 warnings for this particular instance of the problem the policy addresses.
* Remove usage of CMAKE_CURRENT_LIST_DIR now that we have CMP0017Alex Neundorf2011-01-041-1/+1
| | | | | | | | This puts the new search behaviour for included files in action, i.e. now when a file from Modules/ include()s another file, it also gets the one from Modules/ included, i.e. the one it expects. Alex
* Use absolute path to FindPackageHandleStandardArgs.cmake everywhereAlex Neundorf2010-09-281-1/+1
| | | | | | | This is to avoid getting an (older) copy of FPHSA.cmake which is e.g. installed with KDE 4.5.0 and 4.5.1. Alex
* Fix 11136: [patch] FindThreads.cmake documents the wrong variablePhilip Lowman2010-09-181-1/+1
| | | | Fixed documentation to be correct.
* Modules: Fix spelling 'To distributed' -> 'To distribute'Todd Gamblin2010-08-091-1/+1
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* Support pthreads on irix.Clinton Stimpson2010-06-121-2/+4
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* Convert CMake find-modules to BSD LicenseBrad King2009-09-281-0/+13
| | | | | | | This adds copyright/license notification blocks CMake's find-modules. Many of the modules had no notices at all. Some had notices referring to the BSD license already. This commit normalizes existing notices and adds missing notices.
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