fixing ARM issue with glog

modules/sfm/CMakeLists.txt

@@ -6,6 +6,11 @@ set(the_description "SFM algorithms")
 find_package(Ceres QUIET)
 
 if(NOT DEFINED SFM_DEPS_OK)
+
+  if(NOT DEFINED GLOG_LIBRARIES)
+    set(GLOG_LIBRARIES "glog")
+  endif()
+
   set(_fname "${CMAKE_CURRENT_BINARY_DIR}/test_sfm_deps.cpp")
   file(WRITE "${_fname}" "#include <glog/logging.h>\n#include <gflags/gflags.h>\nint main() { (void)(0); return 0; }\n")
   try_compile(SFM_DEPS_OK "${CMAKE_CURRENT_BINARY_DIR}" "${_fname}"