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CMake/Modules/Platform/Linux-PathScale.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copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong.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.
Add PathScale shared library flags on Linux We add platform-specific compiler information files Platform/Linux-PathScale-<lang>.cmake to enable -fPIC and -shared flags for shared libraries.
2010-01-21 17:09:27 +03:00
# This module is shared by multiple languages; use include blocker.
if(__LINUX_COMPILER_PATHSCALE)
return()
endif()
set(__LINUX_COMPILER_PATHSCALE 1)
macro(__linux_compiler_pathscale lang)
# Shared library compile and link flags.
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_${lang}_COMPILE_OPTIONS_PIE "-fPIE")
Add PathScale shared library flags on Linux We add platform-specific compiler information files Platform/Linux-PathScale-<lang>.cmake to enable -fPIC and -shared flags for shared libraries.
2010-01-21 17:09:27 +03:00
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")
endmacro()