On Thu, Jun 12, 2008 at 1:14 PM, Jean-Sébastien Guay <
[EMAIL PROTECTED]> wrote:

> Hello Eric,
>
>  Is there any reason we shouldn't require CMake 2.6 when compiling the
>> latest OSG?
>>
>
> I don't think it's really that useful to require that everyone update their
> CMake version to 2.6 just for this. We can work around it through tweaks to
> the CMakeLists.txt instead. Though we have to draw a line when the number of
> "tweaks"/workarounds gets too large, and then requiring a more recent
> version of CMake is possible. But it's Robert's call.
>
>  I will also see if a conditional based on cmake version will work for me.
>>
>
> See the top of the file, this is what I submitted to work around the
> "problem" on Linux and Windows:
>
>    # Works around warnings about escaped quotes in ADD_DEFINITIONS
>    # statements.
>    cmake_policy(SET CMP0005 OLD)
>

I'm using this change (I'm using the latest svn) but it doesn't fix the
problem on OSX. I added a conditional around line 349 that checks the
version of cmake in use and that seems to solve the problem for me. I'm
attaching my CMakeLists.txt to this message if anyone wants to try it out
before I make a formal submission with it.


>
> I also suggested that checking CMake version and using a different
> ADD_DEFINITIONS line without the escaped quotes would work too, but might be
> harder to maintain if there are more than this ADD_DEFINITIONS line that use
> escaped quotes... Looks like on Mac, we might not have a choice.
>

This looks like the only one that is causing trouble for me.



>
> When I submitted this "fix", I mentioned the possibilities - check the
> archives. Robert opted for this workaround to minimize the short-term
> impact, I guess. Longer term, I don't know.
>
> Anyways, if we end up using a conditional on the CMake version, we could
> remove the cmake_policy line.


I'll test removing that policy line before I submit my changes through
osg-submissions.

-Eric



>
>
> J-S
> --
> ______________________________________________________
> Jean-Sebastien Guay    [EMAIL PROTECTED]
>                               http://www.cm-labs.com/
>                        http://whitestar02.webhop.org/
> _______________________________________________
> osg-users mailing list
> osg-users@lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
IF(WIN32)
    CMAKE_MINIMUM_REQUIRED(VERSION 2.4.6 FATAL_ERROR)
ELSE(WIN32)
    IF(APPLE)
        CMAKE_MINIMUM_REQUIRED(VERSION 2.4.6 FATAL_ERROR)
        IF(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4 
AND ${CMAKE_PATCH_VERSION} LESS 7)
            MESSAGE("Warning: A critical CMake bug exists in 2.4.6 and below. 
Trying to build Universal Binaries will result in a compile error that seems 
unrelated. Either avoid building Universal Binaries by changing the 
CMAKE_OSX_ARCHITECTURES field to list only your architecture, or upgrade to the 
current CVS version of CMake or a newer stable version if it exists.")
        ENDIF(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4 
AND ${CMAKE_PATCH_VERSION} LESS 7)
    ELSE(APPLE)
        CMAKE_MINIMUM_REQUIRED(VERSION 2.4.0 FATAL_ERROR)
    ENDIF(APPLE)
ENDIF(WIN32)

if(COMMAND cmake_policy)
    # Works around warnings libraries linked against that don't
    # have absolute paths (e.g. -lpthreads)
    cmake_policy(SET CMP0003 NEW)

    # Works around warnings about escaped quotes in ADD_DEFINITIONS
    # statements.
    cmake_policy(SET CMP0005 OLD)
endif(COMMAND cmake_policy)

PROJECT(OpenSceneGraph)

SET(OPENSCENEGRAPH_MAJOR_VERSION 2)
SET(OPENSCENEGRAPH_MINOR_VERSION 5)
SET(OPENSCENEGRAPH_PATCH_VERSION 2)
SET(OPENSCENEGRAPH_SOVERSION 38)

SET(OPENSCENEGRAPH_VERSION 
${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINOR_VERSION}.${OPENSCENEGRAPH_PATCH_VERSION})

SET(OSG_PLUGINS osgPlugins-${OPENSCENEGRAPH_VERSION})

SET(OSG_PLUGIN_PREFIX "")

IF (CYGWIN)
    SET(OSG_PLUGIN_PREFIX "cygwin_")
ENDIF(CYGWIN)

IF(MINGW)
    SET(OSG_PLUGIN_PREFIX "mingw_")
ENDIF(MINGW)


# We want to build SONAMES shared librariess
SET(OPENSCENEGRAPH_SONAMES TRUE)
SET(OPENTHREADS_SONAMES TRUE)

SET(OpenThreads_SOURCE_DIR ${OpenSceneGraph_SOURCE_DIR})

# We have some custom .cmake scripts not in the official distribution.
# Maybe this can be used override existing behavior if needed?
SET(CMAKE_MODULE_PATH 
"${OpenSceneGraph_SOURCE_DIR}/CMakeModules;${CMAKE_MODULE_PATH}")

# Mainly for Windows as a convenience. This will find a directory in parallel 
with the
# OSG source that contains 3rd party headers and libraries.
# Use of relative paths in CMake is ill-advised, but don't know of any 
alternatives in this case
#SET(CMAKE_INCLUDE_PATH 
"${OpenSceneGraph_SOURCE_DIR}/../3rdParty/include;${CMAKE_INCLUDE_PATH}")
#SET(CMAKE_LIBRARY_PATH 
"${OpenSceneGraph_SOURCE_DIR}/../3rdParty/lib;${CMAKE_LIBRARY_PATH}")
IF(USING_OSG_OP_OT_TRIPLE_SET)
    SET(CMAKE_INCLUDE_PATH 
"${OpenSceneGraph_SOURCE_DIR}/../../3rdParty/include;${CMAKE_INCLUDE_PATH}")
    SET(CMAKE_LIBRARY_PATH 
"${OpenSceneGraph_SOURCE_DIR}/../../3rdParty/lib;${CMAKE_LIBRARY_PATH}")
ENDIF(USING_OSG_OP_OT_TRIPLE_SET)


# Okay, here's the problem: On some platforms, linking against OpenThreads
# is not enough and explicit linking to the underlying thread library
# is also required (e.g. FreeBSD). But OpenThreads may be built with different
# backends (Pthreads, Sproc, Windows) so we don't know what the underlying
# thread library is because some platforms support multiple backends (e.g.
# IRIX supports Sproc and Pthreads). Linking all libraries won't work
# because the libraries may be incompatible.
# So the current solution is to attempt best guess linking and exempt certain
# cases. With IRIX, we're going to hope explicit linking to the underlying
# library is not necessary. We currently don't case for pthreads on Windows
# which might be an issue on things like Cygwin. This may need to be fixed.
FIND_PACKAGE(Threads)
IF(CMAKE_SYSTEM MATCHES IRIX)
    # Erase CMAKE_THREAD_LIBS_INIT and hope it works
    SET(CMAKE_THREAD_LIBS_INIT "" CACHE INTERNAL "")
ENDIF(CMAKE_SYSTEM MATCHES IRIX)

# Find OpenGL
FIND_PACKAGE(OpenGL)

IF(APPLE)
    FIND_LIBRARY(CARBON_LIBRARY Carbon)
    FIND_LIBRARY(COCOA_LIBRARY Cocoa)
ENDIF(APPLE)

IF(UNIX)
    # Not sure what this will do on Cygwin and Msys
    # Also, remember OS X X11 is a user installed option so it may not exist.
    FIND_PACKAGE(X11)
    # Some Unicies need explicit linkage to the Math library or the build fails.
    FIND_LIBRARY(MATH_LIBRARY m)
ENDIF(UNIX)

# Make the headers visible to everything
INCLUDE_DIRECTORIES(
    ${OpenSceneGraph_SOURCE_DIR}/include
    ${OPENGL_INCLUDE_DIR}
)

# Common global definitions
#ADD_DEFINITIONS(-D)
# Platform specific definitions


IF(WIN32)

    IF(MSVC)
        # This option is to enable the /MP switch for Visual Studio 2005 and 
above compilers
        OPTION(WIN32_USE_MP "Set to ON to build OpenSceneGraph with the /MP 
option (Visual Studio 2005 and above)." OFF)
        MARK_AS_ADVANCED(WIN32_USE_MP)
        IF(WIN32_USE_MP)
            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
        ENDIF(WIN32_USE_MP)

        # More MSVC specific compilation flags
        ADD_DEFINITIONS(-D_SCL_SECURE_NO_WARNINGS)
        ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE)
    ENDIF(MSVC)

    #needed for net plugin
    SET (OSG_SOCKET_LIBS wsock32)
    # Both Cygwin and Msys need -DNOMINMAX ???
    IF(UNIX)
        ADD_DEFINITIONS(-DNOMINMAX)
    ENDIF(UNIX)
########################################################################################################
# the foolowing options are MSVC specific,
# the first OSG_MSVC_VERSIONED_DLL activate a custom build-time layout that 
should allow to run examples and application
# fron bin folder without requiring installation step.
# it also prepend "osg${OPENSCENEGRAPH_SOVERSION}-" to only .dll files, leaving 
.lib files untouched in lib
# it also use a hack to get rid of Debug and Release folder in MSVC projects
# all the .dll and .pdb are in bin and all the .lib and .exp are in lib
#
# the second option disable incremental linking in debug build , that is 
enabled by default by CMake
##########################################################################################################

    IF(MSVC)
        IF(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4 
AND ${CMAKE_PATCH_VERSION} LESS 7)
            MESSAGE("Warning:  disabling versioned options 2.4.6 exibits 
inconsintencies in .pdb naming, at least under MSVC, suggested upgrading at 
least to 2.4.7")
            SET(OSG_MSVC_VERSIONED_DLL OFF)
            SET(OSG_MSVC_DEBUG_INCREMENTAL_LINK ON)
        ELSE(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4 
AND ${CMAKE_PATCH_VERSION} LESS 7)
            OPTION(OSG_MSVC_VERSIONED_DLL "Set to ON to build OpenSceneGraph 
with versioned dll names" ON)
            MARK_AS_ADVANCED(OSG_MSVC_VERSIONED_DLL)
            OPTION(OSG_MSVC_DEBUG_INCREMENTAL_LINK "Set to OFF to build 
OpenSceneGraph without incremental linking in debug (release is off by 
default)" ON)
            MARK_AS_ADVANCED(OSG_MSVC_DEBUG_INCREMENTAL_LINK)
            IF(NOT OSG_MSVC_DEBUG_INCREMENTAL_LINK)
                SET(CMAKE_MODULE_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
                SET(CMAKE_SHARED_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
                SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
            ENDIF(NOT OSG_MSVC_DEBUG_INCREMENTAL_LINK)
        ENDIF(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4 
AND ${CMAKE_PATCH_VERSION} LESS 7)
    ENDIF(MSVC)
ENDIF(WIN32)

########################################################################################################
##### these were settings located in SetupCommon.cmake used in Luigi builds.... 
find out what are useful
########################################################################################################
#luigi#SET(CMAKE_VERBOSE_MAKEFILE TRUE)
#luigi#SET(CMAKE_SKIP_RPATH TRUE)
#luigi#SET(CMAKE_SKIP_RULE_DEPENDENCY TRUE)
#luigi#IF(UNIX)
#luigi#    LIST_CONTAINS(contains "g++" ${CMAKE_CXX_COMPILER_LIST})
#luigi#    IF (contains)
#luigi#        MESSAGE(${MY_MESSAGE_DEFAULT} 
"${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} setting  
CMAKE_CXX_COMPILER to g++")
#luigi#        SET(CMAKE_CXX_COMPILER "g++")
#luigi#        SET(CMAKE_CXX_COMPILER_LOADED 2)
#luigi#        SET(CMAKE_CXX_COMPILER_WORKS 2)
#luigi#    ENDIF (contains)
#luigi#    SET(CMAKE_CXX_FLAGS_RELEASE "-O2")
#luigi#    SET(CMAKE_CXX_FLAGS_DEBUG "-ggdb -gstabs")
#luigi#ENDIF(UNIX)
########################################################################################################

OPTION(OSG_USE_FLOAT_MATRIX "Set to ON to build OpenSceneGraph with float 
Matrix instead of double." OFF)
MARK_AS_ADVANCED(OSG_USE_FLOAT_MATRIX)
IF(OSG_USE_FLOAT_MATRIX)
    ADD_DEFINITIONS(-DOSG_USE_FLOAT_MATRIX)
ENDIF(OSG_USE_FLOAT_MATRIX)

OPTION(OSG_USE_FLOAT_PLANE "Set to ON to build OpenSceneGraph with float Plane 
instead of double." OFF)
MARK_AS_ADVANCED(OSG_USE_FLOAT_PLANE)
IF(OSG_USE_FLOAT_PLANE)
    ADD_DEFINITIONS(-DOSG_USE_FLOAT_PLANE)
ENDIF(OSG_USE_FLOAT_PLANE)

OPTION(OSG_USE_FLOAT_BOUNDINGSPHERE "Set to ON to build OpenSceneGraph with 
float BoundingSphere instead of double." ON)
MARK_AS_ADVANCED(OSG_USE_FLOAT_BOUNDINGSPHERE)
IF(NOT OSG_USE_FLOAT_BOUNDINGSPHERE)
    ADD_DEFINITIONS(-DOSG_USE_DOUBLE_BOUNDINGSPHERE)
ENDIF(NOT OSG_USE_FLOAT_BOUNDINGSPHERE)

OPTION(OSG_USE_FLOAT_BOUNDINGBOX "Set to ON to build OpenSceneGraph with float 
BoundingBox instead of double." ON)
MARK_AS_ADVANCED(OSG_USE_FLOAT_BOUNDINGBOX)
IF(NOT OSG_USE_FLOAT_BOUNDINGBOX)
    ADD_DEFINITIONS(-DOSG_USE_DOUBLE_BOUNDINGBOX)
ENDIF(NOT OSG_USE_FLOAT_BOUNDINGBOX)

################################################################################
# 3rd Party Dependency Stuff
IF(WIN32)
    INCLUDE(Find3rdPartyDependencies)
ENDIF(WIN32)

# Common to all platforms:
FIND_PACKAGE(FreeType)
FIND_PACKAGE(FLTK)
FIND_PACKAGE(GLUT)
FIND_PACKAGE(SDL)
FIND_PACKAGE(FOX)
FIND_PACKAGE(Inventor)
FIND_PACKAGE(Jasper)
FIND_PACKAGE(COLLADA)
FIND_PACKAGE(Xine)
FIND_PACKAGE(OpenVRML)
FIND_PACKAGE(Performer)
FIND_PACKAGE(ZLIB)
FIND_PACKAGE(GDAL)
FIND_PACKAGE(CURL)

SET(wxWidgets_USE_LIBS base core gl net)
FIND_PACKAGE(wxWidgets)

# To select a specific version of QT define DESIRED_QT_VERSION
# via cmake -DDESIRED_QT_VERSION=4
IF  (DESIRED_QT_VERSION)

    IF  (DESIRED_QT_VERSION MATCHES 4)
      FIND_PACKAGE(Qt4)
    ELSE(DESIRED_QT_VERSION MATCHES 4)
      FIND_PACKAGE(Qt3)
    ENDIF(DESIRED_QT_VERSION MATCHES 4)

ELSE(DESIRED_QT_VERSION)

    FIND_PACKAGE(Qt4)

    IF  (NOT QT4_FOUND)
        FIND_PACKAGE(Qt3)
    ENDIF(NOT QT4_FOUND)

ENDIF(DESIRED_QT_VERSION)

#use pkg-config to find various modues
INCLUDE(FindPkgConfig OPTIONAL)

IF(PKG_CONFIG_FOUND)

    INCLUDE(FindPkgConfig)

    PKG_CHECK_MODULES(GTK gtk+-2.0)

    IF(WIN32)
        PKG_CHECK_MODULES(GTKGL gtkglext-win32-1.0)
    ELSE(WIN32)
        PKG_CHECK_MODULES(GTKGL gtkglext-x11-1.0)
    ENDIF(WIN32)

    PKG_CHECK_MODULES(RSVG librsvg-2.0)
    PKG_CHECK_MODULES(CAIRO cairo)

ENDIF(PKG_CONFIG_FOUND)

#
# Test to determine if we want the "tripledot" form of the GLU tesselator 
callback.
#
IF(NOT DEFAULT_GLU_TESS_CALLBACK_TRIPLEDOT)
    IF(WIN32 OR CMAKE_SYSTEM_NAME MATCHES "Linux")

        # Skip the compile check for platforms that never need the variable
        # form.
        SET(DEFAULT_GLU_TESS_CALLBACK_TRIPLEDOT false)

    ELSE(WIN32 OR CMAKE_SYSTEM_NAME MATCHES "Linux")

        # For other platforms perform the check
        INCLUDE(CheckCXXSourceCompiles)
        SET(CMAKE_REQUIRED_DEFINITIONS -DGLU_TESS_CALLBACK_TRIPLEDOT)
        SET(CMAKE_REQUIRED_INCLUDES ${CMAKE_CURRENT_SOURCE_DIR}/include 
${GLUT_INCLUDE_DIR} ${GL_INCLUDE_DIR})
        SET(CMAKE_REQUIRED_LIBRARIES ${GLUT_LIBRARY} ${GL_LIBRARY})
        CHECK_CXX_SOURCE_COMPILES(
            "#include <osg/GL>
            #include <osg/GLU>
            static void testcb(GLvoid *, void*) { }
            int main() {
               GLUtesselator *t = gluNewTess();
               gluTessCallback(t, GLU_TESS_VERTEX_DATA, (GLU_TESS_CALLBACK) 
testcb);
               return 0;
            }"
            
GLU_Tesselator_Needs_Variable_Parameter_Callback_Convention_Failure_Means_No)
        SET(DEFAULT_GLU_TESS_CALLBACK_TRIPLEDOT
            
${GLU_Tesselator_Needs_Variable_Parameter_Callback_Convention_Failure_Means_No})

    ENDIF(WIN32 OR CMAKE_SYSTEM_NAME MATCHES "Linux")
ENDIF(NOT DEFAULT_GLU_TESS_CALLBACK_TRIPLEDOT)

OPTION(OSG_GLU_TESS_CALLBACK_TRIPLEDOT "Set to ON to build build with variable 
parameter (...) version of GLU tesselator callback" 
${DEFAULT_GLU_TESS_CALLBACK_TRIPLEDOT})
IF(OSG_GLU_TESS_CALLBACK_TRIPLEDOT)
    ADD_DEFINITIONS(-DGLU_TESS_CALLBACK_TRIPLEDOT)
ENDIF(OSG_GLU_TESS_CALLBACK_TRIPLEDOT)

# Platform specific:
# (We can approach this one of two ways. We can try to FIND everything
# and simply check if we found the packages before actually building
# or we can hardcode the cases. The advantage of the former is that
# packages that are installed on platforms that don't require them
# will still get built (presuming no compatibility issues). But this
# also means modules that are redundant may get built. For example,
# OS X doesn't need GIF, JPEG, PNG, TIFF, etc because it uses QuickTime.
# Also, it will clutter the CMake menu with "NOT_FOUND".
# The downside to the latter is that it is harder to build those
# potentially redundant modules.)

# Image readers/writers depend on 3rd party libraries except for OS X which
# can use Quicktime.
IF(NOT APPLE)
    FIND_PACKAGE(GIFLIB)
    FIND_PACKAGE(JPEG)
    FIND_PACKAGE(PNG)
    FIND_PACKAGE(TIFF)

    # QuickTime is required for OS X, but optional for Windows.
    IF(WIN32)
        FIND_PACKAGE(QuickTime)
    ENDIF(WIN32)

ELSE(NOT APPLE)
    FIND_PACKAGE(QuickTime)
ENDIF(NOT APPLE)

################################################################################
# Create bin and lib directories if required

IF("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
   FILE(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/bin ${CMAKE_BINARY_DIR}/lib 
${CMAKE_BINARY_DIR}/lib/${OSG_PLUGINS})
ENDIF("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")


################################################################################
# Installation stuff

SET(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "add a postfix, usually d on windows")
IF(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} GREATER 4)
  ADD_DEFINITIONS("-DOSG_DEBUG_POSTFIX=${CMAKE_DEBUG_POSTFIX} ")
ELSE(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} GREATER 4)
  ADD_DEFINITIONS("-DOSG_DEBUG_POSTFIX='\"${CMAKE_DEBUG_POSTFIX}\"'")
ENDIF(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} GREATER 4)
IF(UNIX AND NOT WIN32 AND NOT APPLE)
  IF(CMAKE_BUILD_TYPE STREQUAL "Debug")
    ADD_DEFINITIONS("-D_DEBUG")
  ENDIF(CMAKE_BUILD_TYPE STREQUAL "Debug")
ENDIF(UNIX AND NOT WIN32 AND NOT APPLE)


IF(UNIX AND NOT WIN32 AND NOT APPLE)
  IF(CMAKE_SIZEOF_VOID_P MATCHES "8")
      SET(LIB_POSTFIX "64" CACHE STRING "suffix for 32/64 dir placement")
      MARK_AS_ADVANCED(LIB_POSTFIX)
  ENDIF(CMAKE_SIZEOF_VOID_P MATCHES "8")
ENDIF(UNIX AND NOT WIN32 AND NOT APPLE)
IF(NOT DEFINED LIB_POSTFIX)
    SET(LIB_POSTFIX "")
ENDIF(NOT DEFINED LIB_POSTFIX)

# Here we apparantly do some funky stuff with making the bin/ and lib/
# folders which is probably needed to work around a very old CMake bug?

#SET(OUTPUT_BINDIR ${PROJECT_BINARY_DIR}/bin/${CMAKE_SYSTEM_NAME})
SET(OUTPUT_BINDIR ${PROJECT_BINARY_DIR}/bin)
MAKE_DIRECTORY(${OUTPUT_BINDIR})
IF(MSVC AND NOT MSVC_IDE)
    MAKE_DIRECTORY(${OUTPUT_BINDIR}/${OSG_PLUGINS})
ENDIF(MSVC AND NOT MSVC_IDE)

#SET(OUTPUT_LIBDIR ${PROJECT_BINARY_DIR}/lib/${CMAKE_SYSTEM_NAME})
SET(OUTPUT_LIBDIR ${PROJECT_BINARY_DIR}/lib)
MAKE_DIRECTORY(${OUTPUT_LIBDIR})
IF(NOT MSVC)
    MAKE_DIRECTORY(${OUTPUT_LIBDIR}/${OSG_PLUGINS})
ENDIF(NOT MSVC)

# On CMake 2.4.x use EXECUTABLE_OUTPUT_PATH and LIBRARY_OUTPUT_PATH and later
# we work around the DLL placement by use of the PREFIX target property hack
#
# On CMake 2.6.x use the newly minted CMAKE_LIBRARY_OUTPUT_DIRECTORY,
# CMAKE_ARCHIVE_OUTPUT_DIRECTORY & CMAKE_RUNTIME_OUTPUT_DIRECTORY

IF(CMAKE_MAJOR_VERSION EQUAL 2 AND CMAKE_MINOR_VERSION GREATER 4)
    # If CMake >= 2.6.0
    SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${OUTPUT_LIBDIR})
    SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${OUTPUT_BINDIR})
    IF(WIN32)
        SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${OUTPUT_BINDIR})
    ELSE(WIN32)
        SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${OUTPUT_LIBDIR})
    ENDIF(WIN32)
ELSE(CMAKE_MAJOR_VERSION EQUAL 2 AND CMAKE_MINOR_VERSION GREATER 4)
    SET(EXECUTABLE_OUTPUT_PATH ${OUTPUT_BINDIR})
    SET(LIBRARY_OUTPUT_PATH ${OUTPUT_LIBDIR})
ENDIF(CMAKE_MAJOR_VERSION EQUAL 2 AND CMAKE_MINOR_VERSION GREATER 4)

#SET(INSTALL_BINDIR OpenSceneGraph/bin)
#SET(INSTALL_INCDIR OpenSceneGraph/include)
#SET(INSTALL_LIBDIR OpenSceneGraph/lib)
#SET(INSTALL_DOCDIR OpenSceneGraph/doc)

################################################################################
# User Options


# Expose CMAKE_INCLUDE_PATH and CMAKE_LIBARY_PATH to the GUI so users
# may set these values without needing to manipulate the environment.
SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} CACHE STRING "You may add 
additional search paths here. Use ; to separate multiple paths.")
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} CACHE STRING "You may add 
additional search paths here. Use ; to separate multiple paths.")
# We are proposing that a new variable called CMAKE_PREFIX_PATH be introduced
# to CMake to compliment CMAKE_INCLUDE_PATH and CMAKE_LIBRARY_PATH.
# A formal feature request has been submited to CMake, Bug #4947.
# It is intended for those users who have common prefixes for their INCLUDE
# and LIBRARY locations. So if users have headers in /usr/local/include
# and libraries in /usr/local/lib, the common prefix is /usr/local.
# It should also cover the case where headers and libraries are
# in the same directory.
# Our proposal expects that FIND_* commands will automatically search for
# CMAKE_PREFIX_PATH right after CMAKE_INCLUDE_PATH or CMAKE_LIBRARY_PATH.
# Obviously, since CMake does not currently support this, we must write
# our Find*.cmake modules to explicitly support this. Otherwise, this variable
# will have no impact.
# This is unofficial so this may be removed or changed at anytime.
SET(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} CACHE STRING "(EXPERIMENTAL) You may 
add additional search paths here. Use ; to separate multiple paths.")


# Dynamic vs Static Linking
OPTION(DYNAMIC_OPENSCENEGRAPH "Set to ON to build OpenSceneGraph for dynamic 
linking.  Use OFF for static." ON)
IF   (DYNAMIC_OPENSCENEGRAPH)
    SET(OPENSCENEGRAPH_USER_DEFINED_DYNAMIC_OR_STATIC "SHARED")
ELSE (DYNAMIC_OPENSCENEGRAPH)
    SET(OPENSCENEGRAPH_USER_DEFINED_DYNAMIC_OR_STATIC "STATIC")
ENDIF(DYNAMIC_OPENSCENEGRAPH)

INCLUDE(OsgMacroUtils)
# OSG Core
ADD_SUBDIRECTORY(src)

# OSG Applications
OPTION(BUILD_OSG_APPLICATIONS "Enable to build OSG Applications (e.g. 
osgviewer)" ON)
IF   (BUILD_OSG_APPLICATIONS)
    ADD_SUBDIRECTORY(applications)
ENDIF(BUILD_OSG_APPLICATIONS)

# OSG Examples
OPTION(BUILD_OSG_EXAMPLES "Enable to build OSG Examples" OFF)
IF   (BUILD_OSG_EXAMPLES)
    ADD_SUBDIRECTORY(examples)
ENDIF(BUILD_OSG_EXAMPLES)

# This is for an advanced option to give aggressive warnings
# under different compilers. If yours is not implemented, this option
# will not be made available.
IF(CMAKE_COMPILER_IS_GNUCXX)
    # To be complete, we might also do GNUCC flags,
    # but everything here is C++ code.
    # -Wshadow and -Woverloaded-virtual are also interesting flags, but OSG
    # returns too many hits.
    # FYI, if we do implement GNUCC, then -Wmissing-prototypes in another
    # interesting C-specific flag.
    # Also, there is a bug in gcc 4.0. Under C++, -pedantic will create
    # errors instead of warnings for certain issues, including superfluous
    # semicolons and commas, and the use of long long. -fpermissive seems
    # to be the workaround.
    SET(OSG_AGGRESSIVE_WARNING_FLAGS "-Wall -Wparentheses -Wformat=2 
-Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces 
-Wunknown-pragmas -Wunused -fpermissive")
ELSE(CMAKE_COMPILER_IS_GNUCXX)
    IF(MSVC)
        # FIXME: What are good aggressive warning flags for Visual Studio?
        # And do we need to further subcase this for different versions of VS?
        # CMake variables: MSVC60, MSVC70, MSVC71, MSVC80, CMAKE_COMPILER_2005
        SET(OSG_AGGRESSIVE_WARNING_FLAGS "/Wall /W4")


    ELSE(MSVC)
        # CMake lacks an elseif, so other non-gcc, non-VS compilers need
        # to be listed below. If unhandled, OSG_AGGRESSIVE_WARNING_FLAGS should
        # remain unset.
    ENDIF(MSVC)
ENDIF(CMAKE_COMPILER_IS_GNUCXX)

# This part is for the CMake menu option to toggle the warnings on/off.
# This will only be made available if we set values for 
OSG_AGGRESSIVE_WARNING_FLAGS.
IF(OSG_AGGRESSIVE_WARNING_FLAGS)
    OPTION(OSG_USE_AGGRESSIVE_WARNINGS "Enable to activate aggressive warnings" 
OFF)
    MARK_AS_ADVANCED(OSG_USE_AGGRESSIVE_WARNINGS)

    IF(OSG_USE_AGGRESSIVE_WARNINGS)
        IF(NOT "${OLD_CMAKE_CXX_FLAGS_WAS_SET}")
            SET(OLD_CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE INTERNAL "Old 
CXX flags")
            SET(OLD_CMAKE_CXX_FLAGS_WAS_SET 1 CACHE INTERNAL "Old CXX flags was 
set")
            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} 
${OSG_AGGRESSIVE_WARNING_FLAGS}" CACHE STRING "Flags used by the compiler 
during all build types." FORCE)
        ENDIF(NOT "${OLD_CMAKE_CXX_FLAGS_WAS_SET}")
    ELSE(OSG_USE_AGGRESSIVE_WARNINGS)
        # FIXME: This will lose any changes made after OLD_CMAKE_CXX_FLAGS was
        # set. The better way would be to parse the string and remove each
        # option explicitly.
        IF("${OLD_CMAKE_CXX_FLAGS_WAS_SET}")
            SET(CMAKE_CXX_FLAGS "${OLD_CMAKE_CXX_FLAGS}" CACHE STRING "Flags 
used by the compiler during all build types." FORCE)
            SET(OLD_CMAKE_CXX_FLAGS_WAS_SET 0 CACHE INTERNAL "Old CXX flags was 
set")
        ENDIF("${OLD_CMAKE_CXX_FLAGS_WAS_SET}")
    ENDIF(OSG_USE_AGGRESSIVE_WARNINGS)
ENDIF(OSG_AGGRESSIVE_WARNING_FLAGS)

# Set defaults for Universal Binaries. We want 32-bit Intel/PPC on 10.4
# and 32/64-bit Intel/PPC on >= 10.5. Anything <= 10.3 doesn't support.
IF(APPLE)
    # These are just defaults/recommendations, but how we want to build
    # out of the box. But the user needs to be able to change these options.
    # So we must only set the values the first time CMake is run, or we
    # will overwrite any changes the user sets.
    # FORCE is used because the options are not reflected in the UI otherwise.
    # Seems like a good place to add version specific compiler flags too.
    IF(NOT OSG_CONFIG_HAS_BEEN_RUN_BEFORE)
        # This is really fragile, but CMake doesn't provide the OS system
        # version information we need. (Darwin versions can be changed
        # independently of OS X versions.)
        # It does look like CMake handles the CMAKE_OSX_SYSROOT automatically.
        IF(EXISTS /Developer/SDKs/10.5.sdk)
            SET(CMAKE_OSX_ARCHITECTURES "ppc;i386;ppc64;x86_64" CACHE STRING 
"Build architectures for OSX" FORCE)
            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.5 
-ftree-vectorize -fvisibility-inlines-hidden" CACHE STRING "Flags used by the 
compiler during all build types." FORCE)
        ELSE(EXISTS /Developer/SDKs/10.5.sdk)
            IF(EXISTS /Developer/SDKs/MacOSX10.4u.sdk)
                SET(CMAKE_OSX_ARCHITECTURES "ppc;i386" CACHE STRING "Build 
architectures for OSX" FORCE)
                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} 
-mmacosx-version-min=10.4 -ftree-vectorize -fvisibility-inlines-hidden" CACHE 
STRING "Flags used by the compiler during all build types." FORCE)
            ELSE(EXISTS /Developer/SDKs/MacOSX10.4u.sdk)
                # No Universal Binary support
                # Should break down further to set the -mmacosx-version-min,
                # but the SDK detection is too unreliable here.
            ENDIF(EXISTS /Developer/SDKs/MacOSX10.4u.sdk)
        ENDIF(EXISTS /Developer/SDKs/10.5.sdk)
    ENDIF(NOT OSG_CONFIG_HAS_BEEN_RUN_BEFORE)

    OPTION(OSG_BUILD_APPLICATION_BUNDLES "Enable the building of applications 
and examples as OSX Bundles" OFF)

ENDIF(APPLE)

OPTION(BUILD_REF_DOCS "Build OpenSceneGraph reference documentation using 
doxygen (use: make DoxygenDoc)" OFF)

IF(BUILD_REF_DOCS)
    SET(BUILD_DOCUMENTATION YES)
    OPTION(BUILD_REF_DOCS_SEARCHENGINE "Enable doxygen's search engine 
(requires that documentation to be installed on a php enabled web server)" OFF)
    OPTION(BUILD_REF_DOCS_TAGFILE "Generate a tag file named osg.tag on the 
documentation web server" OFF)
ENDIF(BUILD_REF_DOCS)

# For Doxygen
#FIXME: I haven't figured out what to do with OSG's multiple doxyfiles
# and footer.
INCLUDE(${CMAKE_ROOT}/Modules/Documentation.cmake OPTIONAL)
OPTION(BUILD_DOCUMENTATION "Build osg documentation" OFF)
# To build the documention, you will have to enable it
# and then do the equivalent of "make DoxygenDoc".
IF(BUILD_DOCUMENTATION)
    SET(BUILD_DOCUMENTATION YES)

    IF(BUILD_REF_DOCS_SEARCHENGINE)
        SET(SEARCHENGINE YES)
    ELSE(BUILD_REF_DOCS_SEARCHENGINE)
        SET(SEARCHENGINE NO)
    ENDIF(BUILD_REF_DOCS_SEARCHENGINE)

    IF(BUILD_REF_DOCS_TAGFILE)
        SET(GENERATE_TAGFILE "doc/OpenSceneGraphReferenceDocs/osg.tag")
    ELSE(BUILD_REF_DOCS_TAGFILE)
        SET(GENERATE_TAGFILE "")
    ENDIF(BUILD_REF_DOCS_TAGFILE)

    IF(DOT)
        SET(HAVE_DOT YES)
    ELSE(DOT)
        SET(HAVE_DOT NO)
    ENDIF(DOT)
    # This processes our Doxyfile.in and substitutes paths to generate
    # a final Doxyfile
    CONFIGURE_FILE(${PROJECT_SOURCE_DIR}/doc/Doxyfiles/doxyfile.cmake
        ${PROJECT_BINARY_DIR}/doc/doxyfile
    )
    # This creates a new target to build documentation.
    # It runs ${DOXYGEN} which is the full path and executable to
    # Doxygen on your system, set by the FindDoxygen.cmake module
    # (called by FindDocumentation.cmake).
    # It runs the final generated Doxyfile against it.
    # The DOT_PATH is substituted into the Doxyfile.
    ADD_CUSTOM_TARGET(DoxygenDoc ${DOXYGEN}
        ${PROJECT_BINARY_DIR}/doc/doxyfile
    )
ENDIF(BUILD_DOCUMENTATION)

# This needs to be run very last so other parts of the scripts can take
# advantage of this.
IF(NOT OSG_CONFIG_HAS_BEEN_RUN_BEFORE)
    SET(OSG_CONFIG_HAS_BEEN_RUN_BEFORE 1 CACHE INTERNAL "Flag to track whether 
this is the first time running CMake or if CMake has been configured before")
ENDIF(NOT OSG_CONFIG_HAS_BEEN_RUN_BEFORE)


#-----------------------------------------------------------------------------
### uninstall target
#-----------------------------------------------------------------------------
CONFIGURE_FILE(
  "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules/cmake_uninstall.cmake.in"
  "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
  IMMEDIATE @ONLY)
ADD_CUSTOM_TARGET(uninstall
  "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")

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