Close bld/OSG floor: OSG 3.4.1 from source + port osgQt to Qt6 + wire BgViewer dtEntity

Migrate BuildingViewer (16 files: DDS members, m_logger inits, QOpenGLWidget); gui:3:bld.info + gui:3:bdv now load
2026-10-24 19:32:52 +02:00
1 parent 8e9594d25c
commit d327c66c46
@@ -0,0 +1,117 @@
+# FindOpenSceneGraph.cmake
+#
+# Locate an installed OpenSceneGraph and expose the module variables that the
+# Legatus BuildingViewer stack links against:
+#   OSG_INCLUDE_DIR, OPENSCENEGRAPH_INCLUDE_DIRS
+#   OPENSCENEGRAPH_LIBRARIES   (the OSG component libs that were found)
+#   OPENTHREADS_LIBRARIES
+#   OPENSCENEGRAPH_FOUND, OPENSCENEGRAPH_VERSION
+#
+# NOTE (Qt6-migration port): OSG 3.4.1 ships no FindOpenSceneGraph.cmake and
+# installs no OpenSceneGraphConfig.cmake, so this module is supplied to close
+# the bld/OSG floor. It finds the 3.4.1 build installed under CMAKE_PREFIX_PATH
+# (the component libs live under <prefix>/lib64) and honours the requested
+# components -- including the ported Qt6 osgQt (see the .osg-port notes).
+#
+# Mirrors the classic OSG Find-module variable names that BuildingViewer/Common
+# links: ${OSG_INCLUDE_DIR}, ${OPENSCENEGRAPH_LIBRARIES}, ${OPENTHREADS_LIBRARIES}.
+
+SET(OSG_SEARCH_PREFIXES ${CMAKE_PREFIX_PATH} /usr/local /usr)
+
+# Include dir: locate the osg/Version header.
+FIND_PATH(OSG_INCLUDE_DIR
+    NAMES osg/Version
+    PATHS ${OSG_SEARCH_PREFIXES}
+    PATH_SUFFIXES include)
+
+# OpenThreads support library (distinct SONAME: libOpenThreads.so.20 for 3.4.1).
+FIND_LIBRARY(OPENTHREADS_LIBRARY
+    NAMES OpenThreads
+    PATHS ${OSG_SEARCH_PREFIXES}
+    PATH_SUFFIXES lib lib64)
+
+# OSG component libraries. Find each that exists and collect them so
+# OPENSCENEGRAPH_LIBRARIES covers the transitive dependency set the BgViewer
+# SDK and BuildingViewerCommon link (the SDK's NEEDED entries require
+# osg/DB/GA/Qt/Shadow/Sim/Text/Util/Viewer/Particle/Manipulator/Animation).
+SET(OSG_COMPONENT_LIBS
+    osg
+    osgDB
+    osgUtil
+    osgGA
+    osgText
+    osgViewer
+    osgAnimation
+    osgManipulator
+    osgParticle
+    osgShadow
+    osgSim
+    osgWidget
+    osgQt)
+
+SET(OPENSCENEGRAPH_LIBRARIES "")
+FOREACH(_osg_lib ${OSG_COMPONENT_LIBS})
+    FIND_LIBRARY(OSG_LIBRARY_${_osg_lib}
+        NAMES ${_osg_lib}
+        PATHS ${OSG_SEARCH_PREFIXES}
+        PATH_SUFFIXES lib lib64)
+    IF(OSG_LIBRARY_${_osg_lib})
+        LIST(APPEND OPENSCENEGRAPH_LIBRARIES ${OSG_LIBRARY_${_osg_lib}})
+        SET(OPENSCENEGRAPH_${_osg_lib}_FOUND TRUE)
+    ELSE()
+        SET(OPENSCENEGRAPH_${_osg_lib}_FOUND FALSE)
+    ENDIF()
+ENDFOREACH()
+
+# Core libs are mandatory for the package to count as found.
+SET(_osg_core_ok TRUE)
+IF(NOT OSG_LIBRARY_osg OR NOT OSG_LIBRARY_osgDB OR NOT OSG_LIBRARY_osgUtil
+   OR NOT OSG_LIBRARY_osgGA OR NOT OSG_LIBRARY_osgViewer OR NOT OPENTHREADS_LIBRARY)
+    SET(_osg_core_ok FALSE)
+ENDIF()
+
+# Any requested component that is missing makes the package not found.
+FOREACH(_osg_req ${OpenSceneGraph_FIND_COMPONENTS})
+    IF(NOT OSG_LIBRARY_${_osg_req})
+        SET(_osg_core_ok FALSE)
+        MESSAGE(STATUS "OpenSceneGraph: required component '${_osg_req}' not found")
+    ENDIF()
+ENDFOREACH()
+
+# Version string from the installed header's OPENSCENEGRAPH_*_VERSION macros.
+IF(OSG_INCLUDE_DIR)
+    FILE(READ "${OSG_INCLUDE_DIR}/osg/Version" _osg_version_header)
+    STRING(REGEX MATCH "#define[ \t]+OPENSCENEGRAPH_MAJOR_VERSION[ \t]+[0-9]+"
+        _osg_m "${_osg_version_header}")
+    STRING(REGEX MATCH "#define[ \t]+OPENSCENEGRAPH_MINOR_VERSION[ \t]+[0-9]+"
+        _osg_n "${_osg_version_header}")
+    STRING(REGEX MATCH "#define[ \t]+OPENSCENEGRAPH_PATCH_VERSION[ \t]+[0-9]+"
+        _osg_p "${_osg_version_header}")
+    STRING(REGEX REPLACE "[^0-9]" "" _osg_major "${_osg_m}")
+    STRING(REGEX REPLACE "[^0-9]" "" _osg_minor "${_osg_n}")
+    STRING(REGEX REPLACE "[^0-9]" "" _osg_patch "${_osg_p}")
+    IF(_osg_major AND _osg_minor AND _osg_patch)
+        SET(OPENSCENEGRAPH_VERSION "${_osg_major}.${_osg_minor}.${_osg_patch}")
+    ENDIF()
+ENDIF()
+
+IF(OSG_INCLUDE_DIR AND _osg_core_ok)
+    SET(OPENSCENEGRAPH_FOUND TRUE)
+    SET(OPENSCENEGRAPH_INCLUDE_DIRS ${OSG_INCLUDE_DIR})
+    SET(OPENTHREADS_LIBRARIES ${OPENTHREADS_LIBRARY})
+ELSE()
+    SET(OPENSCENEGRAPH_FOUND FALSE)
+ENDIF()
+
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenSceneGraph
+    FOUND_VAR OPENSCENEGRAPH_FOUND
+    VERSION_VAR OPENSCENEGRAPH_VERSION
+    REQUIRED_VARS OPENSCENEGRAPH_INCLUDE_DIRS OPENSCENEGRAPH_LIBRARIES OPENTHREADS_LIBRARIES)
+
+MARK_AS_ADVANCED(
+    OSG_INCLUDE_DIR OPENTHREADS_LIBRARY
+    OSG_LIBRARY_osg OSG_LIBRARY_osgDB OSG_LIBRARY_osgUtil OSG_LIBRARY_osgGA
+    OSG_LIBRARY_osgText OSG_LIBRARY_osgViewer OSG_LIBRARY_osgAnimation
+    OSG_LIBRARY_osgManipulator OSG_LIBRARY_osgParticle OSG_LIBRARY_osgShadow
+    OSG_LIBRARY_osgSim OSG_LIBRARY_osgWidget OSG_LIBRARY_osgQt)