diff -urN gfal2-2.12.3.orig/cmake/modules/CMakeGeneratePkgConfig.cmake gfal2-2.12.3/cmake/modules/CMakeGeneratePkgConfig.cmake
--- gfal2-2.12.3.orig/cmake/modules/CMakeGeneratePkgConfig.cmake	2016-11-10 14:26:58.000000000 +0100
+++ gfal2-2.12.3/cmake/modules/CMakeGeneratePkgConfig.cmake	2017-01-26 13:00:32.622154982 +0100
@@ -25,7 +25,7 @@
 
 
 SET(CMAKE_PKGCONFIG_TEMPLATE_BASE "
-prefix=@PREFIX@  
+prefix=@PREFIX@
 exec_prefix= \\\${prefix}
 libdir= @LIBDIR_VAR@
 includedir=@INCLUDE_VAR@