CMake/Modules/SelectLibraryConfigurations.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names and years are hard to maintain and often out-of-date or plain wrong.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

71 lines
2.9 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#.rst:
# SelectLibraryConfigurations
# ---------------------------
#
#
#
# select_library_configurations( basename )
#
# This macro takes a library base name as an argument, and will choose
# good values for basename_LIBRARY, basename_LIBRARIES,
# basename_LIBRARY_DEBUG, and basename_LIBRARY_RELEASE depending on what
# has been found and set. If only basename_LIBRARY_RELEASE is defined,
# basename_LIBRARY will be set to the release value, and
# basename_LIBRARY_DEBUG will be set to basename_LIBRARY_DEBUG-NOTFOUND.
# If only basename_LIBRARY_DEBUG is defined, then basename_LIBRARY will
# take the debug value, and basename_LIBRARY_RELEASE will be set to
# basename_LIBRARY_RELEASE-NOTFOUND.
#
# If the generator supports configuration types, then basename_LIBRARY
# and basename_LIBRARIES will be set with debug and optimized flags
# specifying the library to be used for the given configuration. If no
# build type has been set or the generator in use does not support
# configuration types, then basename_LIBRARY and basename_LIBRARIES will
# take only the release value, or the debug value if the release one is
# not set.
# This macro was adapted from the FindQt4 CMake module and is maintained by Will
# Dicharry <wdicharry@stellarscience.com>.
macro( select_library_configurations basename )
if(NOT ${basename}_LIBRARY_RELEASE)
set(${basename}_LIBRARY_RELEASE "${basename}_LIBRARY_RELEASE-NOTFOUND" CACHE FILEPATH "Path to a library.")
endif()
if(NOT ${basename}_LIBRARY_DEBUG)
set(${basename}_LIBRARY_DEBUG "${basename}_LIBRARY_DEBUG-NOTFOUND" CACHE FILEPATH "Path to a library.")
endif()
if( ${basename}_LIBRARY_DEBUG AND ${basename}_LIBRARY_RELEASE AND
NOT ${basename}_LIBRARY_DEBUG STREQUAL ${basename}_LIBRARY_RELEASE AND
( CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE ) )
# if the generator supports configuration types or CMAKE_BUILD_TYPE
# is set, then set optimized and debug options.
set( ${basename}_LIBRARY "" )
foreach( _libname IN LISTS ${basename}_LIBRARY_RELEASE )
list( APPEND ${basename}_LIBRARY optimized "${_libname}" )
endforeach()
foreach( _libname IN LISTS ${basename}_LIBRARY_DEBUG )
list( APPEND ${basename}_LIBRARY debug "${_libname}" )
endforeach()
elseif( ${basename}_LIBRARY_RELEASE )
set( ${basename}_LIBRARY ${${basename}_LIBRARY_RELEASE} )
elseif( ${basename}_LIBRARY_DEBUG )
set( ${basename}_LIBRARY ${${basename}_LIBRARY_DEBUG} )
else()
set( ${basename}_LIBRARY "${basename}_LIBRARY-NOTFOUND")
endif()
set( ${basename}_LIBRARIES "${${basename}_LIBRARY}" )
if( ${basename}_LIBRARY )
set( ${basename}_FOUND TRUE )
endif()
mark_as_advanced( ${basename}_LIBRARY_RELEASE
${basename}_LIBRARY_DEBUG
)
endmacro()