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OpenMW/cmake/FindOSGPlugins.cmake
Gleb Mazovetskiy e265d0bc2b Fix OSGPlugins_LIB_DIR on the MacOS build
Moves auto-detection of OSGPlugins_LIB_DIR into FindOSGPlugins.cmake.

This should hopefully fix the error in the MacOS build.
2021-02-19 19:00:24 +00:00

68 lines
2.6 KiB
CMake

# This module accepts the following env variable
# OSGPlugins_LIB_DIR - <OpenSceneGraph>/lib/osgPlugins-<X.X.X> , path to search plugins
# OSGPlugins_DONT_FIND_DEPENDENCIES - Set to skip also finding png, zlib and jpeg
#
# Once done this will define
# OSGPlugins_FOUND - System has the all required components.
# OSGPlugins_LIBRARIES - Link these to use the required osg plugins components.
#
# Components:
# - osgdb_png
# - osgdb_tga
# - osgdb_dds
# - osgdb_jpeg
include(LibFindMacros)
include(Findosg_functions)
if (NOT OSGPlugins_LIB_DIR)
unset(OSGPlugins_LIB_DIR)
foreach(OSGDB_LIB ${OSGDB_LIBRARY})
# Skip library type names
if(EXISTS ${OSGDB_LIB} AND NOT IS_DIRECTORY ${OSGDB_LIB})
get_filename_component(OSG_LIB_DIR ${OSGDB_LIB} DIRECTORY)
list(APPEND OSGPlugins_LIB_DIR "${OSG_LIB_DIR}/osgPlugins-${OPENSCENEGRAPH_VERSION}")
endif()
endforeach(OSGDB_LIB)
endif()
if (NOT OSGPlugins_LIB_DIR)
set(_mode WARNING)
if (OSGPlugins_FIND_REQUIRED)
set(_mode FATAL_ERROR)
endif()
message(${_mode} "OSGPlugins_LIB_DIR variable must be set")
endif()
foreach(_library ${OSGPlugins_FIND_COMPONENTS})
string(TOUPPER ${_library} _library_uc)
set(_component OSGPlugins_${_library})
# On some systems, notably Debian and Ubuntu, the OSG plugins do not have
# the usual "lib" prefix. We temporarily add the empty string to the list
# of prefixes CMake searches for (via osg_find_library) to support these systems.
set(_saved_lib_prefix ${CMAKE_FIND_LIBRARY_PREFIXES}) # save CMAKE_FIND_LIBRARY_PREFIXES
list(APPEND CMAKE_FIND_LIBRARY_PREFIXES "") # search libraries with no prefix
set(${_library_uc}_DIR ${OSGPlugins_LIB_DIR}) # to help function osg_find_library
osg_find_library(${_library_uc} ${_library}) # find it into ${_library_uc}_LIBRARIES
set(CMAKE_FIND_LIBRARY_PREFIXES ${_saved_lib_prefix}) # restore prefix
if (${_library_uc}_LIBRARIES)
set(${_component}_LIBRARY ${${_library_uc}_LIBRARIES}) # fake as if we call find_library
else()
set(${_component}_LIBRARY ${_component}_LIBRARY-NOTFOUND)
endif()
list(APPEND OSGPlugins_PROCESS_LIBS ${_component}_LIBRARY)
endforeach()
if(NOT DEFINED OSGPlugins_DONT_FIND_DEPENDENCIES)
foreach(_dependency PNG ZLIB JPEG) # needed by osgdb_png or osgdb_jpeg
libfind_package(OSGPlugins ${_dependency})
set(${_dependency}_LIBRARY_OPTS ${_dependency}_LIBRARY)
#list(APPEND OSGPlugins_PROCESS_LIBS ${_dependency}_LIBRARY)
endforeach()
endif()
libfind_process(OSGPlugins)