tweak CMakeLists.txt in order to allow linking with an already installed libbsdf library
tweak CMakeLists.txt in order to allow linking with an already installed libbsdf library

KimuraRyo/BSDFViewer,KimuraRyo/BSDFViewer,KimuraRyo/BSDFProcessor,KimuraRyo/BSDFViewer,KimuraRyo/BSDFProcessor,KimuraRyo/BSDFProcessor