From Mourad Boufarguine,

"There is a redundant cmake code at the end of osgViewer cmake script. The install command is issued in SETUP_LIBRARY macro."
"I spotted this when i tried a make install on the android port :) I saw some weird copy commands of osgViewer headers.
I managed to get all osg headers copied to cmake_install_prefix/include upon make install, but i can't (yet) get the libraries to be copied to cmake_install_prefix/lib (see attached files)"

CMakeModules/ModuleInstall.cmake

@@ -25,6 +25,14 @@ IF(MSVC AND OSG_MSVC_VERSIONED_DLL)
     HANDLE_MSVC_DLL()
 ENDIF()
 
+IF(ANDROID)
+    INSTALL (
+        FILES        ${TARGET_H}
+        DESTINATION ${INSTALL_INCDIR}/${LIB_NAME}
+        COMPONENT libopenscenegraph-dev
+    )
+ELSE(ANDROID)
+
 INSTALL(
     TARGETS ${LIB_NAME}
     RUNTIME DESTINATION ${INSTALL_BINDIR} COMPONENT libopenscenegraph
@@ -50,3 +58,5 @@ ELSE()
     )
     # MESSAGE("${OSG_COMPILE_FRAMEWORKS_INSTALL_NAME_DIR}")
 ENDIF()
+
+ENDIF(ANDROID)

CMakeModules/OsgMacroUtils.cmake

@@ -237,8 +237,8 @@ MACRO(SETUP_LIBRARY LIB_NAME)
         ENDIF(TARGET_LIBRARIES_VARS)
         LINK_CORELIB_DEFAULT(${LIB_NAME})
     
-        INCLUDE(ModuleInstall OPTIONAL)
     ENDIF()
+    INCLUDE(ModuleInstall OPTIONAL)
 ENDMACRO(SETUP_LIBRARY LIB_NAME)
 
 MACRO(SETUP_PLUGIN PLUGIN_NAME)