CMake: doing proper string comparison in IF clause

diff --git a/SalomeHexoticPLUGINConfig.cmake.in b/SalomeHexoticPLUGINConfig.cmake.in
index a6db03c9b6b1282641adf626f71f6260bd096d3b..0bae0e35811331582ac6d87a8705d729eaa3d4bb 100644 (file)
--- a/SalomeHexoticPLUGINConfig.cmake.in
+++ b/SalomeHexoticPLUGINConfig.cmake.in
@@ -77,7 +77,7 @@ 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}"