CMake: doing proper string comparison in IF clause

diff --git a/SalomeNETGENPLUGINConfig.cmake.in b/SalomeNETGENPLUGINConfig.cmake.in
index b1ce05438658fbc869a70a1aebd088992fc4833b..fcf2f06104072a719f886225ea0a39de2378a8c9 100644 (file)
--- a/SalomeNETGENPLUGINConfig.cmake.in
+++ b/SalomeNETGENPLUGINConfig.cmake.in
@@ -74,7 +74,7 @@ MATH(EXPR _range "${_list_len}-1")
 FOREACH(_p RANGE ${_range})  
   LIST(GET _PREREQ            ${_p} _pkg    )
   LIST(GET _PREREQ_CONFIG_DIR ${_p} _pkg_dir)
-  IF(_pkg_dir)
+  IF(NOT _pkg_dir STREQUAL "")
      MESSAGE(STATUS "===> Reloading targets from ${_pkg} ...")
      FIND_PACKAGE(${_pkg} REQUIRED NO_MODULE 
           PATHS "${_pkg_dir}"