Fix changelog email address
[freerdp-ubuntu-pcb-backport.git] / cmake / FindOptionalPackage.cmake
1 # - FindOptionalPackage
2 # Enable or disable optional packages. Also force optional packages.
3 #
4 #  This module defines the following macros:
5 #    find_required_package   : find a required package, can not be disabled
6 #    find_suggested_package  : find a suggested package - required but can be disabled
7 #    find_optional_package   : find an optional package - required only if enabled
8 #
9
10 #=============================================================================
11 # Copyright 2011 Nils Andresen <nils@nils-andresen.de>
12 #
13 # Licensed under the Apache License, Version 2.0 (the "License");
14 # you may not use this file except in compliance with the License.
15 # You may obtain a copy of the License at
16 #
17 #     http://www.apache.org/licenses/LICENSE-2.0
18 #
19 # Unless required by applicable law or agreed to in writing, software
20 # distributed under the License is distributed on an "AS IS" BASIS,
21 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 # See the License for the specific language governing permissions and
23 # limitations under the License.
24 #=============================================================================
25
26 macro(find_required_package _normal_package)
27         find_package(${_normal_package} REQUIRED)
28 endmacro(find_required_package)
29
30 macro(find_suggested_package _normal_package)
31         string(TOUPPER ${_normal_package} _upper_package)
32         option(WITH_${_upper_package} "Add dependency to ${_normal_package} - recommended" ON)
33         
34         if(WITH_${_upper_package})
35                 message(STATUS "Finding suggested package ${_normal_package}.")
36                 message(STATUS "  Disable this using \"-DWITH_${_upper_package}=OFF\".")
37                 find_package(${_normal_package} REQUIRED)
38         endif(WITH_${_upper_package})
39 endmacro(find_suggested_package)
40
41 macro(find_optional_package _normal_package)
42         string(TOUPPER ${_normal_package} _upper_package)
43         option(WITH_${_upper_package} "Add dependency to ${_normal_package}" OFF)
44
45         if(WITH_${_upper_package})
46                 find_package(${_normal_package} REQUIRED)
47         else(WITH_${_upper_package})
48                 message(STATUS "Skipping optional package ${_normal_package}.")
49                 message(STATUS "  Enable this using \"-DWITH_${_upper_package}=ON\".")
50         endif(WITH_${_upper_package})
51 endmacro(find_optional_package)