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Diffstat (limited to 'cmake/FindOptionalPackage.cmake')
| -rw-r--r-- | cmake/FindOptionalPackage.cmake | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/cmake/FindOptionalPackage.cmake b/cmake/FindOptionalPackage.cmake new file mode 100644 index 0000000..3e543bd --- /dev/null +++ b/cmake/FindOptionalPackage.cmake @@ -0,0 +1,51 @@ +# - FindOptionalPackage +# Enable or disable optional packages. Also force optional packages. +# +# This module defines the following macros: +# find_required_package : find a required package, can not be disabled +# find_suggested_package : find a suggested package - required but can be disabled +# find_optional_package : find an optional package - required only if enabled +# + +#============================================================================= +# Copyright 2011 Nils Andresen <nils@nils-andresen.de> +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +#============================================================================= + +macro(find_required_package _normal_package) + find_package(${_normal_package} REQUIRED) +endmacro(find_required_package) + +macro(find_suggested_package _normal_package) + string(TOUPPER ${_normal_package} _upper_package) + option(WITH_${_upper_package} "Add dependency to ${_normal_package} - recommended" ON) + + if(WITH_${_upper_package}) + message(STATUS "Finding suggested package ${_normal_package}.") + message(STATUS " Disable this using \"-DWITH_${_upper_package}=OFF\".") + find_package(${_normal_package} REQUIRED) + endif(WITH_${_upper_package}) +endmacro(find_suggested_package) + +macro(find_optional_package _normal_package) + string(TOUPPER ${_normal_package} _upper_package) + option(WITH_${_upper_package} "Add dependency to ${_normal_package}" OFF) + + if(WITH_${_upper_package}) + find_package(${_normal_package} REQUIRED) + else(WITH_${_upper_package}) + message(STATUS "Skipping optional package ${_normal_package}.") + message(STATUS " Enable this using \"-DWITH_${_upper_package}=ON\".") + endif(WITH_${_upper_package}) +endmacro(find_optional_package) |