[osg-submissions] Using command-line build system nmake to build OpenSceneGraph does not work

[René Molenaar]

Using commandline build system nmake on windows does not work.

This is caused by the OSG_MSVC_VERSIONED_DLL hack.
there are hard-coded paths to place the dll's in the bin /dir that normally
would go
in the lib/config (release/debug) dirs. Nmake has different locations for
the files (no config dir).

 fix: change the macro's in OsgMacroUtils.cmake for the IF(NOT MSVC_IDE)
situation.
 Libs go in lib/, and DLLs and executables go in bin/
 To accopmplish this for MSVC_IDE the targets get a "../../bin" prefix,
 for nmake this should be "../bin" (because there are no config folders).

 This fix mimics the behaviour of the MSCV_IDE (visual studio) build system
when building with nmake.

 Note:
 A change in the main CMakeLists.txt creates the needed plugin directory in
the binary dir.

 see included files for the changes:
 r7885fix-v2/CMakeModules/OsgMacroUtils.cmake
 r7885fix-v2/osgWrappers/CMakeLists.txt
 r7885fix-v2/CMakeLists.txt


The behaviour of visual studio projects (and other build systems) remain
unchanged.
Tested building and installing with nmake and visual studio 8 debug and
release.



Submitted by: René Molenaar
to: osg-submissions at lists.openscenegraph.org
email: megamillerzoid at gmail.com
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