CMake/Modules/FindFLTK2.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names and years are hard to maintain and often out-of-date or plain wrong.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

255 lines
7.5 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#.rst:
# FindFLTK2
# ---------
#
# Find the native FLTK2 includes and library
#
# The following settings are defined
#
# ::
#
# FLTK2_FLUID_EXECUTABLE, where to find the Fluid tool
# FLTK2_WRAP_UI, This enables the FLTK2_WRAP_UI command
# FLTK2_INCLUDE_DIR, where to find include files
# FLTK2_LIBRARIES, list of fltk2 libraries
# FLTK2_FOUND, Don't use FLTK2 if false.
#
# The following settings should not be used in general.
#
# ::
#
# FLTK2_BASE_LIBRARY = the full path to fltk2.lib
# FLTK2_GL_LIBRARY = the full path to fltk2_gl.lib
# FLTK2_IMAGES_LIBRARY = the full path to fltk2_images.lib
set (FLTK2_DIR $ENV{FLTK2_DIR} )
# Platform dependent libraries required by FLTK2
if(WIN32)
if(NOT CYGWIN)
if(BORLAND)
set( FLTK2_PLATFORM_DEPENDENT_LIBS import32 )
else()
set( FLTK2_PLATFORM_DEPENDENT_LIBS wsock32 comctl32 )
endif()
endif()
endif()
if(UNIX)
include(${CMAKE_ROOT}/Modules/FindX11.cmake)
set( FLTK2_PLATFORM_DEPENDENT_LIBS ${X11_LIBRARIES} -lm)
endif()
if(APPLE)
set( FLTK2_PLATFORM_DEPENDENT_LIBS "-framework Carbon -framework Cocoa -framework ApplicationServices -lz")
endif()
# If FLTK2_INCLUDE_DIR is already defined we assign its value to FLTK2_DIR
if(FLTK2_INCLUDE_DIR)
set(FLTK2_DIR ${FLTK2_INCLUDE_DIR})
else()
set(FLTK2_INCLUDE_DIR ${FLTK2_DIR})
endif()
# If FLTK2 has been built using CMake we try to find everything directly
set(FLTK2_DIR_STRING "directory containing FLTK2Config.cmake. This is either the root of the build tree, or PREFIX/lib/fltk for an installation.")
# Search only if the location is not already known.
if(NOT FLTK2_DIR)
# Get the system search path as a list.
file(TO_CMAKE_PATH "$ENV{PATH}" FLTK2_DIR_SEARCH2)
# Construct a set of paths relative to the system search path.
set(FLTK2_DIR_SEARCH "")
foreach(dir ${FLTK2_DIR_SEARCH2})
set(FLTK2_DIR_SEARCH ${FLTK2_DIR_SEARCH} "${dir}/../lib/fltk")
endforeach()
string(REPLACE "//" "/" FLTK2_DIR_SEARCH "${FLTK2_DIR_SEARCH}")
#
# Look for an installation or build tree.
#
find_path(FLTK2_DIR FLTK2Config.cmake
# Look for an environment variable FLTK2_DIR.
ENV FLTK2_DIR
# Look in places relative to the system executable search path.
${FLTK2_DIR_SEARCH}
# Look in standard UNIX install locations.
/usr/local/lib/fltk2
/usr/lib/fltk2
/usr/local/fltk2
/usr/X11R6/include
# Help the user find it if we cannot.
DOC "The ${FLTK2_DIR_STRING}"
)
if(NOT FLTK2_DIR)
find_path(FLTK2_DIR fltk/run.h ${FLTK2_INCLUDE_SEARCH_PATH})
endif()
endif()
# If FLTK2 was found, load the configuration file to get the rest of the
# settings.
if(FLTK2_DIR)
# Check if FLTK2 was built using CMake
if(EXISTS ${FLTK2_DIR}/FLTK2Config.cmake)
set(FLTK2_BUILT_WITH_CMAKE 1)
endif()
if(FLTK2_BUILT_WITH_CMAKE)
set(FLTK2_FOUND 1)
include(${FLTK2_DIR}/FLTK2Config.cmake)
# Fluid
if(FLUID_COMMAND)
set(FLTK2_FLUID_EXECUTABLE ${FLUID_COMMAND} CACHE FILEPATH "Fluid executable")
else()
find_program(FLTK2_FLUID_EXECUTABLE fluid2 PATHS
${FLTK2_EXECUTABLE_DIRS}
${FLTK2_EXECUTABLE_DIRS}/RelWithDebInfo
${FLTK2_EXECUTABLE_DIRS}/Debug
${FLTK2_EXECUTABLE_DIRS}/Release
NO_SYSTEM_PATH)
endif()
mark_as_advanced(FLTK2_FLUID_EXECUTABLE)
set( FLTK_FLUID_EXECUTABLE ${FLTK2_FLUID_EXECUTABLE} )
set(FLTK2_INCLUDE_DIR ${FLTK2_DIR})
link_directories(${FLTK2_LIBRARY_DIRS})
set(FLTK2_BASE_LIBRARY fltk2)
set(FLTK2_GL_LIBRARY fltk2_gl)
set(FLTK2_IMAGES_LIBRARY fltk2_images)
# Add the extra libraries
load_cache(${FLTK2_DIR}
READ_WITH_PREFIX
FL FLTK2_USE_SYSTEM_JPEG
FL FLTK2_USE_SYSTEM_PNG
FL FLTK2_USE_SYSTEM_ZLIB
)
set(FLTK2_IMAGES_LIBS "")
if(FLFLTK2_USE_SYSTEM_JPEG)
set(FLTK2_IMAGES_LIBS ${FLTK2_IMAGES_LIBS} fltk2_jpeg)
endif()
if(FLFLTK2_USE_SYSTEM_PNG)
set(FLTK2_IMAGES_LIBS ${FLTK2_IMAGES_LIBS} fltk2_png)
endif()
if(FLFLTK2_USE_SYSTEM_ZLIB)
set(FLTK2_IMAGES_LIBS ${FLTK2_IMAGES_LIBS} fltk2_zlib)
endif()
set(FLTK2_IMAGES_LIBS "${FLTK2_IMAGES_LIBS}" CACHE INTERNAL
"Extra libraries for fltk2_images library.")
else()
# if FLTK2 was not built using CMake
# Find fluid executable.
find_program(FLTK2_FLUID_EXECUTABLE fluid2 ${FLTK2_INCLUDE_DIR}/fluid)
# Use location of fluid to help find everything else.
set(FLTK2_INCLUDE_SEARCH_PATH "")
set(FLTK2_LIBRARY_SEARCH_PATH "")
if(FLTK2_FLUID_EXECUTABLE)
set( FLTK_FLUID_EXECUTABLE ${FLTK2_FLUID_EXECUTABLE} )
get_filename_component(FLTK2_BIN_DIR "${FLTK2_FLUID_EXECUTABLE}" PATH)
set(FLTK2_INCLUDE_SEARCH_PATH ${FLTK2_INCLUDE_SEARCH_PATH}
${FLTK2_BIN_DIR}/../include ${FLTK2_BIN_DIR}/..)
set(FLTK2_LIBRARY_SEARCH_PATH ${FLTK2_LIBRARY_SEARCH_PATH}
${FLTK2_BIN_DIR}/../lib)
set(FLTK2_WRAP_UI 1)
endif()
set(FLTK2_INCLUDE_SEARCH_PATH ${FLTK2_INCLUDE_SEARCH_PATH}
/usr/local/fltk2
/usr/X11R6/include
)
find_path(FLTK2_INCLUDE_DIR fltk/run.h ${FLTK2_INCLUDE_SEARCH_PATH})
set(FLTK2_LIBRARY_SEARCH_PATH ${FLTK2_LIBRARY_SEARCH_PATH}
/usr/local/fltk2/lib
/usr/X11R6/lib
${FLTK2_INCLUDE_DIR}/lib
)
find_library(FLTK2_BASE_LIBRARY NAMES fltk2
PATHS ${FLTK2_LIBRARY_SEARCH_PATH})
find_library(FLTK2_GL_LIBRARY NAMES fltk2_gl
PATHS ${FLTK2_LIBRARY_SEARCH_PATH})
find_library(FLTK2_IMAGES_LIBRARY NAMES fltk2_images
PATHS ${FLTK2_LIBRARY_SEARCH_PATH})
# Find the extra libraries needed for the fltk_images library.
if(UNIX)
find_program(FLTK2_CONFIG_SCRIPT fltk2-config PATHS ${FLTK2_BIN_DIR})
if(FLTK2_CONFIG_SCRIPT)
exec_program(${FLTK2_CONFIG_SCRIPT} ARGS --use-images --ldflags
OUTPUT_VARIABLE FLTK2_IMAGES_LDFLAGS)
set(FLTK2_LIBS_EXTRACT_REGEX ".*-lfltk2_images (.*) -lfltk2.*")
if("${FLTK2_IMAGES_LDFLAGS}" MATCHES "${FLTK2_LIBS_EXTRACT_REGEX}")
string(REGEX REPLACE " +" ";" FLTK2_IMAGES_LIBS "${CMAKE_MATCH_1}")
# The EXEC_PROGRAM will not be inherited into subdirectories from
# the file that originally included this module. Save the answer.
set(FLTK2_IMAGES_LIBS "${FLTK2_IMAGES_LIBS}" CACHE INTERNAL
"Extra libraries for fltk_images library.")
endif()
endif()
endif()
endif()
endif()
set(FLTK2_FOUND 1)
foreach(var FLTK2_FLUID_EXECUTABLE FLTK2_INCLUDE_DIR
FLTK2_BASE_LIBRARY FLTK2_GL_LIBRARY
FLTK2_IMAGES_LIBRARY)
if(NOT ${var})
message( STATUS "${var} not found" )
set(FLTK2_FOUND 0)
endif()
endforeach()
if(FLTK2_FOUND)
set(FLTK2_LIBRARIES ${FLTK2_IMAGES_LIBRARY} ${FLTK2_IMAGES_LIBS} ${FLTK2_BASE_LIBRARY} ${FLTK2_GL_LIBRARY} )
if(APPLE)
set(FLTK2_LIBRARIES ${FLTK2_PLATFORM_DEPENDENT_LIBS} ${FLTK2_LIBRARIES})
else()
set(FLTK2_LIBRARIES ${FLTK2_LIBRARIES} ${FLTK2_PLATFORM_DEPENDENT_LIBS})
endif()
# The following deprecated settings are for compatibility with CMake 1.4
set (HAS_FLTK2 ${FLTK2_FOUND})
set (FLTK2_INCLUDE_PATH ${FLTK2_INCLUDE_DIR})
set (FLTK2_FLUID_EXE ${FLTK2_FLUID_EXECUTABLE})
set (FLTK2_LIBRARY ${FLTK2_LIBRARIES})
else()
# make FIND_PACKAGE friendly
if(NOT FLTK2_FIND_QUIETLY)
if(FLTK2_FIND_REQUIRED)
message(FATAL_ERROR
"FLTK2 required, please specify its location with FLTK2_DIR.")
else()
message(STATUS "FLTK2 was not found.")
endif()
endif()
endif()