lyx_mirror/development/cmake/modules/FindMagic.cmake

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#
# Copyright (c) 2006, Peter K<>mmel, <syntheticpp@gmx.net>
# 2012, Kornel Benko, <kornel@lyx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
include(CheckFunctionExists)
macro(check_magic_functions_exists _varname)
set(${_varname} 1)
if (Magic_LIBRARY)
set(CMAKE_REQUIRED_LIBRARIES ${Magic_LIBRARY})
endif()
foreach(fkt file open load close error)
check_function_exists(magic_${fkt} HAS_function_magic_${fkt})
if (NOT HAS_function_magic_${fkt})
set(${_varname} 0)
message(STATUS "Function magic_${fkt} not found")
endif()
endforeach()
endmacro()
if (Magic_INCLUDE_DIR)
# Already in cache, be silent
set(Magic_FIND_QUIETLY TRUE)
endif()
find_path(Magic_INCLUDE_DIR magic.h PATHS
/usr/include
/usr/local/include)
find_library(Magic_LIBRARY NAMES "magic")
check_magic_functions_exists(HAS_MAGIC_FUNCTIONS)
if(Magic_INCLUDE_DIR AND Magic_LIBRARY AND HAS_MAGIC_FUNCTIONS)
set(Magic_FOUND TRUE)
endif()
if(Magic_FOUND)
if(NOT Magic_FIND_QUIETLY)
message(STATUS "Found magic library: ${Magic_LIBRARY}")
endif()
else()
if(Magic_FIND_REQUIRED)
message(STATUS "Looked for magic library named magic.")
message(STATUS "Found no acceptable magic library. This is fatal.")
message(STATUS "magic header: ${Magic_INCLUDE_DIR}")
message(STATUS "magic lib : ${Magic_LIBRARY}")
message(FATAL_ERROR "Could NOT find magic library")
endif()
endif()
mark_as_advanced(Magic_LIBRARY Magic_INCLUDE_DIR)