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* PCH: Do not add #pragma system_header for Xcode generatorCristian Adam2019-12-041-1/+3
| | | | Fixes: #20039
* PCH: Add support for OBJC/OBJCXX languagesCristian Adam2019-11-031-0/+2
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* Precompile headers: Add methods to generate PCH sourcesCristian Adam2019-08-281-0/+8
| | | | Co-Author: Daniel Pfeifer <daniel@pfeifer-mail.de>
* PIE link options: Update strategy to fix performance regressionMarc Chevrier2018-12-191-14/+5
| | | | Fixes: #18700
* POSITION_INDEPENDENT_CODE: Manage link flags for executablesMarc Chevrier2018-11-111-0/+16
| | | | Fixes: #14983, #16561
* Respect CMAKE_<LANG>_COMPILER_ARG1 in CMAKE_<LANG>_COMPILER_PREDEFINES_COMMANDSebastian Holtermann2018-08-281-1/+7
| | | | | | | | | | | AUTOMOC used to fail to generate ``moc_predefs.h`` when ``ccache`` was used as a compiler starter by e.g. configuring a project with the environment variable CXX="ccache g++". The reason was that ``CMAKE_<LANG>_COMPILER_ARG1`` wasn't respected in the definition of ``CMAKE_<LANG>_COMPILER_PREDEFINES_COMMAND`` for various compilers. This is fixed by this patch. Fixes #17275.
* LINK_OPTIONS: Add support of "LINKER:" prefixMarc Chevrier2018-06-061-0/+3
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* Move GNU COMPILER_PREDEFINES_COMMAND from Platform to CompilerSebastian Holtermann2018-06-011-0/+2
| | | | | | | | Moves `CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND` from linux specific [Modules/Platform/Linux-GNU.cmake](Modules/Platform/Linux-GNU.cmake) to [Modules/Compiler/GNU.cmake](Modules/Compiler/GNU.cmake). This enables compiler predefines generation (in AUTOMOC) on all platforms that run gcc (and clang).
* IPO: Fix support for spaces in path to archive toolsThomas Stenersen2017-10-061-3/+3
| | | | | | | | In the normal archiving rules the ``<CMAKE_AR>`` placeholder is replaced by the generators with a properly-quoted path to the tool. In the IPO rules we specify the tools directly, so we need to quote them. Fixes: #17326
* IPO: Consider support for each language separatelyBrad King2017-06-141-3/+3
| | | | | | | | | We only define `INTERPROCEDURAL_OPTIMIZATION` behavior for C, CXX, and Fortran languages. Do not try to enable support for other languages. Furthermore, each language builds with a different compiler, so check for support by CMake and the compiler for each language independently. Fixes: #16944
* GNU: Use common compiler macros for language standard defaultChuck Atkins2017-05-021-0/+2
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* Rename CMAKE_GCC_{AR,RANLIB} to CMAKE_LANG_COMPILER_{AR,RANLIB}Ruslan Baratov2017-04-031-3/+3
| | | | | | The variables recently added by commit b9d36826 (Add 'CMAKE_GCC_AR' and 'CMAKE_GCC_RANLIB' variables, 2017-03-08) are more appropriately managed with language-specific names rather than toolchain-specific names.
* Implement interprocedural optimization for GNU compilersRuslan Baratov2017-03-301-0/+39
| | | | | Honor the `INTERPROCEDURAL_OPTIMIZATION` target property for GNU compilers by activating their link-time-optimization (LTO) flags.
* Simplify CMake per-source license noticesBrad King2016-09-271-12/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* GNU: Use -fvisibility on GCC 4.0 and 4.1 tooBrad King2016-08-021-1/+1
| | | | | | | This flag is needed for the `<LANG>_VISIBILITY_PRESET` target property. It has been supported since GCC 4.0, not 4.2 as we previously recorded. Fixes #16222.
* Honor CMAKE_<LANG>_FLAGS[_<CONFIG>]_INIT set in toolchain filesBrad King2016-07-061-5/+5
| | | | | | | | | | | | | | | | | | | | | | | Document these variables. Change our convention for setting these variables from: set(CMAKE_C_FLAGS_INIT "...") to string(APPEND CMAKE_C_FLAGS_INIT " ...") so that any value previously set by a toolchain file will be used. Automate the conversion with: sed -i 's/set *(\(CMAKE_\(C\|CXX\|Fortran\|RC\|ASM\|${[^}]\+}\)_FLAGS\(_[^_]\+\)\?_INIT \+"\)/string(APPEND \1 /' \ Modules/Compiler/*.cmake Modules/Platform/*.cmake and follow up with some manual fixes (e.g. to cases that already meant to append). Also revert the automated changes to contexts that are not protected from running multiple times.
* Ninja: Add dependencies on system-provided header files (#14914)Brad King2016-03-151-1/+1
| | | | | | | | When system-provided packages are upgraded we must re-compile sources depending on their headers. Use `-MD` instead of `-MMD` so that the generated depfiles do not exclude system headers. Suggested-by: Jussi Judin
* Apple: Enable -isystem for GNU Compiler >= 4 (#15953)Gregor Jasny2016-02-071-1/+1
| | | | | | | | Due to #4662 -isystem support was disabled for all GNU Compilers on Apple platforms. But the change was probably a just work around for a broken compiler on Tiger (see 10837#c27206). So we tighten the condition to only kick in for GCC versions earlier than 4. That should ensure sane behavior for Xcode 3.2 and later.
* Factor an <INCLUDES> placeholder out of <FLAGS> in rule variablesBrad King2015-07-131-2/+2
| | | | | | | | | | | Teach the Makefile and Ninja generators to substitute for an <INCLUDES> placeholder instead of putting -I in <FLAGS>. Update our values for CMAKE_<LANG>_COMPILE_OBJECT, CMAKE_<LANG>_CREATE_ASSEMBLY_SOURCE, and CMAKE_<LANG>_CREATE_PREPROCESSED_SOURCE to place <INCLUDES> just before <FLAGS>.
* Add CMAKE_SYSROOT variable to set --sysroot when cross compiling.Stephen Kelly2013-11-191-0/+1
| | | | | | | | | | As CMAKE_ROOT_FIND_PATH can be a list, a new CMAKE_SYSROOT is introduced, which is never a list. The contents of this variable is passed to supporting compilers as --sysroot. It is also accounted for when processing implicit link directories reported by the compiler, and when generating RPATH information.
* Revert "Use --sysroot when cross compiling."Stephen Kelly2013-07-121-1/+0
| | | | | | | This reverts commit de4da665d3205afa239749c41513a315c3831f51. This feature is not yet ready for release. It needs to be merged with the CMAKE_OSX_SYSROOT feature.
* Use --sysroot when cross compiling.Stephen Kelly2013-06-071-0/+1
| | | | | | | | | | As CMAKE_ROOT_FIND_PATH can be a list, a new CMAKE_SYSROOT is introduced, which is never a list. The contents of this variable is passed to supporting compilers as --sysroot. It is also accounted for when processing implicit link directories reported by the compiler, and when generating RPATH information.
* Introduce target property <LANG>_VISIBILITY_PRESETStephen Kelly2013-06-021-0/+3
| | | | | | This is initialized by CMAKE_<LANG>_VISIBILITY_PRESET. The target property is used as the operand to the -fvisibility= compile option with GNU compilers and clang.
* Add -DNDEBUG to RelWithDebInfo flags where where Release flags had it.Clinton Stimpson2012-08-161-1/+1
| | | | | | Previously, it was inconsistent in that some platforms/compilers had this flag for the RelWithDebInfo configuration and some didn't. This fixes issue #11366.
* Remove CMake-language block-end command argumentsKitware Robot2012-08-131-1/+1
| | | | | | | | | | | | | | | | | 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"'\(\s*\)(.\+)/'"$c"'\1()/' done >convert.sed && git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' | egrep -z -v '^(Utilities/cm|Source/kwsys/)' | egrep -z -v 'Tests/CMakeTests/While-Endwhile-' | xargs -0 sed -i -f convert.sed && rm convert.sed
* Convert CMake-language commands to lower caseKitware Robot2012-08-131-1/+1
| | | | | | | | | | | | | | | | | Ancient CMake versions required upper-case commands. Later command names became case-insensitive. Now the preferred style is lower-case. Run the following shell code: cmake --help-command-list | grep -v "cmake version" | while read c; do echo 's/\b'"$(echo $c | tr '[:lower:]' '[:upper:]')"'\(\s*\)(/'"$c"'\1(/g' done >convert.sed && git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' | egrep -z -v '^(Utilities/cm|Source/kwsys/)' | xargs -0 sed -i -f convert.sed && rm convert.sed
* Add platform variables for position independent code flagsStephen Kelly2012-06-121-0/+4
| | | | | | | | | | | | | | | | | | | | Store in new platform variables CMAKE_${lang}_COMPILE_OPTIONS_PIC CMAKE_${lang}_COMPILE_OPTIONS_PIE flags for position independent code generation. In almost all cases, this means duplication of the CMAKE_SHARED_LIBRARY_${lang}_FLAGS for the _PIC case and using the assumed pie equivalent for the _PIE case. Note that the GNU compiler has supported -fPIE since 3.4 and that there is no -fPIC on GNU for Windows or Cygwin. There is a possibility that the _PIE variables are not correct. However, as there is no backwards compatibility to be concerned about (as the POSITION_INDEPENDENT_CODE property is not used anywhere yet), the current state suffices.
* Ninja: Substitute <OBJECT> and <CMAKE_C_COMPILER> in depfile flagsPeter Collingbourne2012-03-261-1/+4
| | | | | | | | Patch by Amine Khaldi! Also, start using the -MT flag to set a target name for depfiles. This works around a bug observed in distcc, as explained in the comment. Based on a patch by Alexander Usov.
* Provide dependency file flags to generatorPeter Collingbourne2012-02-021-0/+9
| | | | | | | Causes compiler modules (currently only GNU) to set a CMAKE_DEPFILE_FLAGS_${lang} variable, which communicates to the generator the flags required to cause the compiler to create dependency files.
* GNU: Fix CMAKE_INCLUDE_SYSTEM_FLAG_<lang> value (#12258)Brad King2011-06-131-1/+1
| | | | | | | | Fix typo introduced by commit e28c16b4 (Split GNU compiler information files, 2009-12-02). Reported-by: Campbell Barton <ideasman42@gmail.com> Suggested-by: Michael Hertling <mhertling@online.de>
* Modules: Fix spelling 'To distributed' -> 'To distribute'Todd Gamblin2010-08-091-1/+1
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* Split GNU compiler information filesBrad King2009-12-021-0/+38
This moves GNU compiler flags into new-style modules Compiler/GNU-<lang>.cmake Platform/<os>-GNU-<lang>.cmake We use language-independent helper modules Compiler/GNU.cmake Platform/<os>-GNU.cmake to define macros consolidating the information.
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