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Add support for finding several dependencies without pkg-config (#95)
* Add ignition_manual_search CMake macro This macro is useful for manually find a C/C++ library, and it is typically used as a fallback if a library is not found with pkg-config. * FindUUID: Support finding the library without pkg-config * Support for finding ffmpeg libraries without pkg-config Signed-off-by: Silvio Traversaro <silvio.traversaro@iit.it>
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|---|---|---|
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| #=============================================================================== | ||
| # Copyright (C) 2020 Open Source Robotics Foundation | ||
| # | ||
| # 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. | ||
| # | ||
| ######################################## | ||
| # ign_manual_search(<package> [INTERFACE] | ||
| # [HEADER_NAMES <header_names>] | ||
| # [LIBRARY_NAMES <library_names>] | ||
| # [TARGET_NAME <target_name>]) | ||
| # | ||
| # This macro will find a library based on the name of one of its headers, | ||
| # and the library name. | ||
| # It is used inside Find***.cmake scripts, typicall as fallback for a | ||
| # ign_pkg_check_modules_quiet call. | ||
| # It will create an imported target for the library | ||
| # | ||
| # INTERFACE: Optional. Use INTERFACE when the target does not actually provide | ||
| # a library that needs to be linked against (e.g. it is a header-only | ||
| # library, or the target is just used to specify compiler flags). | ||
| # | ||
| # HEADER_NAMES: Optional. Explicitly specify the header names to search with find_path. | ||
| # Default is <package>.h. | ||
| # | ||
| # LIBRARY_NAMES: Optional. Explicitly specify the names of the library to search with find_library. | ||
| # Default is <package>. | ||
| # | ||
| # TARGET_NAME: Optional. Explicitly specify the desired imported target name. | ||
| # Default is <package>::<package>. | ||
| # | ||
| macro(ign_manual_search package) | ||
|
|
||
| #------------------------------------ | ||
| # Define the expected arguments | ||
| set(options INTERFACE) | ||
| set(oneValueArgs "TARGET_NAME") | ||
| set(multiValueArgs "HEADER_NAMES" "LIBRARY_NAMES") | ||
|
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| #------------------------------------ | ||
| # Parse the arguments | ||
| _ign_cmake_parse_arguments(ign_manual_search "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) | ||
|
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| if(ign_manual_search_INTERFACE) | ||
| set(_ign_manual_search_interface_option INTERFACE) | ||
| else() | ||
| set(_ign_manual_search_interface_option) # Intentionally blank | ||
| endif() | ||
|
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| if(NOT ign_manual_search_HEADER_NAMES) | ||
| set(ign_manual_search_HEADER_NAMES "${package}.h") | ||
| endif() | ||
|
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| if(NOT ign_manual_search_LIBRARY_NAMES) | ||
| set(ign_manual_search_LIBRARY_NAMES "${package}") | ||
| endif() | ||
|
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| if(NOT ign_manual_search_TARGET_NAME) | ||
| set(ign_manual_search_TARGET_NAME "${package}::${package}") | ||
| endif() | ||
|
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| find_path(${package}_INCLUDE_DIRS | ||
| NAMES ${ign_manual_search_HEADER_NAMES}) | ||
| find_library(${package}_LIBRARIES | ||
| NAMES ${ign_manual_search_LIBRARY_NAMES}) | ||
| mark_as_advanced(${package}_INCLUDE_DIRS) | ||
| mark_as_advanced(${package}_LIBRARIES) | ||
|
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| set(${package}_FOUND true) | ||
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| if(NOT ${package}_INCLUDE_DIRS) | ||
| set(${package}_FOUND false) | ||
| endif() | ||
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| if(NOT ${package}_LIBRARIES) | ||
| set(${package}_FOUND false) | ||
| endif() | ||
|
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| if(${package}_FOUND) | ||
| include(IgnImportTarget) | ||
| ign_import_target(${package} ${_ign_pkg_check_modules_interface_option} | ||
| TARGET_NAME ${ign_pkg_check_modules_TARGET_NAME}) | ||
| endif() | ||
|
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| endmacro() |