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CMake/Modules/Platform/Linux-Intel.cmake

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Simplify CMake per-source license notices 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copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong.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.
2016-09-27 22:01:08 +03:00
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
Consolidate Linux Intel compiler information We consolidate duplicate code from Platform/Linux-Intel-<lang>.cmake files into a macro defined in Platform/Linux-Intel.cmake.
2009-12-04 17:20:24 +03:00
# This module is shared by multiple languages; use include blocker.
if(__LINUX_COMPILER_INTEL)
return()
endif()
set(__LINUX_COMPILER_INTEL 1)
Split Intel compiler information files This moves platform-independent Intel compiler flags into separate "Compiler/Intel-<lang>.cmake" modules. Platform-specific flags are left untouched.
2009-08-21 17:54:42 +04:00
if(NOT XIAR)
Fix typo in Intel xiar search code This renames the variable '_intel_xair_hints' to '_intel_xiar_hints'.
2009-10-02 21:24:32 +04:00
set(_intel_xiar_hints)
Split Intel compiler information files This moves platform-independent Intel compiler flags into separate "Compiler/Intel-<lang>.cmake" modules. Platform-specific flags are left untouched.
2009-08-21 17:54:42 +04:00
foreach(lang C CXX Fortran)
if(IS_ABSOLUTE "${CMAKE_${lang}_COMPILER}")
get_filename_component(_hint "${CMAKE_${lang}_COMPILER}" PATH)
Fix typo in Intel xiar search code This renames the variable '_intel_xair_hints' to '_intel_xiar_hints'.
2009-10-02 21:24:32 +04:00
list(APPEND _intel_xiar_hints ${_hint})
Split Intel compiler information files This moves platform-independent Intel compiler flags into separate "Compiler/Intel-<lang>.cmake" modules. Platform-specific flags are left untouched.
2009-08-21 17:54:42 +04:00
endif()
endforeach()
Fix typo in Intel xiar search code This renames the variable '_intel_xair_hints' to '_intel_xiar_hints'.
2009-10-02 21:24:32 +04:00
find_program(XIAR NAMES xiar HINTS ${_intel_xiar_hints})
Split Intel compiler information files This moves platform-independent Intel compiler flags into separate "Compiler/Intel-<lang>.cmake" modules. Platform-specific flags are left untouched.
2009-08-21 17:54:42 +04:00
mark_as_advanced(XIAR)
Remove CMake-language block-end command arguments Ancient versions of CMake required else(), endif(), and similar block termination commands to have arguments matching the command starting the block. This is no longer the preferred style. Run the following shell code: for c in else endif endforeach endfunction endmacro endwhile; do echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/' done >convert.sed && git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' | egrep -z -v '^(Utilities/cm|Source/kwsys/)' | egrep -z -v 'Tests/CMakeTests/While-Endwhile-' | xargs -0 sed -i -f convert.sed && rm convert.sed
2012-08-13 21:50:14 +04:00
endif()
Consolidate Linux Intel compiler information We consolidate duplicate code from Platform/Linux-Intel-<lang>.cmake files into a macro defined in Platform/Linux-Intel.cmake.
2009-12-04 17:20:24 +03:00
macro(__linux_compiler_intel lang)
Add platform variables for position independent code flags Store in new platform variables CMAKE_${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.
2012-05-05 23:11:35 +04:00
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE")
Consolidate Linux Intel compiler information We consolidate duplicate code from Platform/Linux-Intel-<lang>.cmake files into a macro defined in Platform/Linux-Intel.cmake.
2009-12-04 17:20:24 +03:00
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")
Restore -rdynamic in Linux build rules The commit "Drop -rdynamic from Linux build rules" removed default use of the flag on Linux. It was expected to be compatible because any project using plugins should set ENABLE_EXPORTS on its executables to export their symbols for use by the plugins in a cross-platform way. However, it is possible to build without ENABLE_EXPORTS and load plugins that do not link to any symbols from the executable explicitly. These plugins may need to see RTTI and other executable symbols needed by the language implementation. Executables using such plugins were broken by the change. If we want to remove the -rdynamic flag in the future we should do so in a compatible way. At that time we should also remove equivalent flags on other platforms (like -bexpall on AIX). We will either need a policy or an explicit API to disable symbol exports on executables. The primary purpose of the above-mentioned commit was to avoid passing the -rdynamic flag to compilers on Linux that do not support it. In this commit we restore the flag but only on GNU and Intel compilers which are known to support it. See issue #9985.
2010-01-13 16:13:46 +03:00
# We pass this for historical reasons. Projects may have
# executables that use dlopen but do not set ENABLE_EXPORTS.
set(CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS "-rdynamic")
Consolidate Linux Intel compiler information We consolidate duplicate code from Platform/Linux-Intel-<lang>.cmake files into a macro defined in Platform/Linux-Intel.cmake.
2009-12-04 17:20:24 +03:00
if(XIAR)
# INTERPROCEDURAL_OPTIMIZATION
set(CMAKE_${lang}_COMPILE_OPTIONS_IPO -ipo)
set(CMAKE_${lang}_CREATE_STATIC_LIBRARY_IPO
"${XIAR} cr <TARGET> <LINK_FLAGS> <OBJECTS> "
"${XIAR} -s <TARGET> ")
endif()
Visibility: the Intel compiler does not support -fvisibility on windows
2014-02-07 14:50:08 +04:00
if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 12.0)
set(CMAKE_${lang}_COMPILE_OPTIONS_VISIBILITY "-fvisibility=")
endif()
Consolidate Linux Intel compiler information We consolidate duplicate code from Platform/Linux-Intel-<lang>.cmake files into a macro defined in Platform/Linux-Intel.cmake.
2009-12-04 17:20:24 +03:00
endmacro()