--- rpl/configure.ac	2014/05/16 14:49:49	1.91
+++ rpl/configure.ac	2014/05/16 17:08:40	1.92
@@ -76,11 +76,11 @@ AC_PROG_F77(gfortran)
 dnl Check for Fortran 9* compiler
 AC_PROG_FC(gfortran)
 
-if test x"$F77" == x; then
+if test x"$F77" = x; then
 	AC_MSG_ERROR([Cannot find gfortran! You have to install it.])
 fi
 
-if test x"$FC" == x; then
+if test x"$FC" = x; then
 	AC_MSG_ERROR([Cannot find gfortran! You have to install it.])
 fi
 
@@ -376,7 +376,7 @@ if test "$enableval" = "no"; then
 else
 	MOTIF_SUPPORT="-DMOTIF_SUPPORT"
 fi],
-if test "$have_x" == "yes"; then
+if test "$have_x" = "yes"; then
 	MOTIF_SUPPORT="-DMOTIF_SUPPORT"
 else
 	MOTIF_SUPPORT="-UMOTIF_SUPPORT"