CMake/Modules/FindLua51.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names and years are hard to maintain and often out-of-date or plain wrong.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

90 lines
2.2 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#.rst:
# FindLua51
# ---------
#
#
#
# Locate Lua library This module defines
#
# ::
#
# LUA51_FOUND, if false, do not try to link to Lua
# LUA_LIBRARIES
# LUA_INCLUDE_DIR, where to find lua.h
# LUA_VERSION_STRING, the version of Lua found (since CMake 2.8.8)
#
#
#
# Note that the expected include convention is
#
# ::
#
# #include "lua.h"
#
# and not
#
# ::
#
# #include <lua/lua.h>
#
# This is because, the lua location is not standardized and may exist in
# locations other than lua/
find_path(LUA_INCLUDE_DIR lua.h
HINTS
ENV LUA_DIR
PATH_SUFFIXES include/lua51 include/lua5.1 include/lua-5.1 include/lua include
PATHS
~/Library/Frameworks
/Library/Frameworks
/sw # Fink
/opt/local # DarwinPorts
/opt/csw # Blastwave
/opt
)
find_library(LUA_LIBRARY
NAMES lua51 lua5.1 lua-5.1 lua
HINTS
ENV LUA_DIR
PATH_SUFFIXES lib
PATHS
~/Library/Frameworks
/Library/Frameworks
/sw
/opt/local
/opt/csw
/opt
)
if(LUA_LIBRARY)
# include the math library for Unix
if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU)
find_library(LUA_MATH_LIBRARY m)
set( LUA_LIBRARIES "${LUA_LIBRARY};${LUA_MATH_LIBRARY}" CACHE STRING "Lua Libraries")
# For Windows and Mac, don't need to explicitly include the math library
else()
set( LUA_LIBRARIES "${LUA_LIBRARY}" CACHE STRING "Lua Libraries")
endif()
endif()
if(LUA_INCLUDE_DIR AND EXISTS "${LUA_INCLUDE_DIR}/lua.h")
file(STRINGS "${LUA_INCLUDE_DIR}/lua.h" lua_version_str REGEX "^#define[ \t]+LUA_RELEASE[ \t]+\"Lua .+\"")
string(REGEX REPLACE "^#define[ \t]+LUA_RELEASE[ \t]+\"Lua ([^\"]+)\".*" "\\1" LUA_VERSION_STRING "${lua_version_str}")
unset(lua_version_str)
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
# handle the QUIETLY and REQUIRED arguments and set LUA_FOUND to TRUE if
# all listed variables are TRUE
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Lua51
REQUIRED_VARS LUA_LIBRARIES LUA_INCLUDE_DIR
VERSION_VAR LUA_VERSION_STRING)
mark_as_advanced(LUA_INCLUDE_DIR LUA_LIBRARIES LUA_LIBRARY LUA_MATH_LIBRARY)