CMake/Modules/Platform/UnixPaths.cmake
Brad King 86578eccf2 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names and years are hard to maintain and often out-of-date or plain wrong.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 15:14:44 -04:00

89 lines
2.3 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
# Block multiple inclusion because "CMakeCInformation.cmake" includes
# "Platform/${CMAKE_SYSTEM_NAME}" even though the generic module
# "CMakeSystemSpecificInformation.cmake" already included it.
# The extra inclusion is a work-around documented next to the include()
# call, so this can be removed when the work-around is removed.
if(__UNIX_PATHS_INCLUDED)
return()
endif()
set(__UNIX_PATHS_INCLUDED 1)
set(UNIX 1)
# also add the install directory of the running cmake to the search directories
# CMAKE_ROOT is CMAKE_INSTALL_PREFIX/share/cmake, so we need to go two levels up
get_filename_component(_CMAKE_INSTALL_DIR "${CMAKE_ROOT}" PATH)
get_filename_component(_CMAKE_INSTALL_DIR "${_CMAKE_INSTALL_DIR}" PATH)
# List common installation prefixes. These will be used for all
# search types.
list(APPEND CMAKE_SYSTEM_PREFIX_PATH
# Standard
/usr/local /usr /
# CMake install location
"${_CMAKE_INSTALL_DIR}"
)
if (NOT CMAKE_FIND_NO_INSTALL_PREFIX)
list(APPEND CMAKE_SYSTEM_PREFIX_PATH
# Project install destination.
"${CMAKE_INSTALL_PREFIX}"
)
if(CMAKE_STAGING_PREFIX)
list(APPEND CMAKE_SYSTEM_PREFIX_PATH
# User-supplied staging prefix.
"${CMAKE_STAGING_PREFIX}"
)
endif()
endif()
# List common include file locations not under the common prefixes.
list(APPEND CMAKE_SYSTEM_INCLUDE_PATH
# Windows API on Cygwin
/usr/include/w32api
# X11
/usr/X11R6/include /usr/include/X11
# Other
/usr/pkg/include
/opt/csw/include /opt/include
/usr/openwin/include
)
list(APPEND CMAKE_SYSTEM_LIBRARY_PATH
# Windows API on Cygwin
/usr/lib/w32api
# X11
/usr/X11R6/lib /usr/lib/X11
# Other
/usr/pkg/lib
/opt/csw/lib /opt/lib
/usr/openwin/lib
)
list(APPEND CMAKE_SYSTEM_PROGRAM_PATH
/usr/pkg/bin
)
list(APPEND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES
/lib /lib32 /lib64 /usr/lib /usr/lib32 /usr/lib64
)
list(APPEND CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES
/usr/include
)
list(APPEND CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES
/usr/include
)
# Enable use of lib32 and lib64 search path variants by default.
set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS TRUE)
set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS TRUE)