diff --git a/src/build b/src/build
index 60142af6663..e68deaea8ff 100644
--- a/src/build
+++ b/src/build
@@ -11,13 +11,21 @@ else
         ECHO_C='\c'
 fi
 
-$ECHO_N "Additional directories to search for include and library files []: $ECHO_C"
+$ECHO_N "Additional directories to search for .h files []: $ECHO_C"
+read a
+if [ "$a." = "." ]
+then
+        ADD_INC_DIRS=
+else
+        ADD_INC_DIRS=`echo "$a" | sed 's@  *@ @g; s@^\([^ ]\)@-I\1@; s@ \([^ ]\)@ -I\1@g'`
+        INC_CFLAGS="$ADD_INC_DIRS"
+        CPPFLAGS="$ADD_INC_DIRS" ; export CPPFLAGS
+fi
+
+$ECHO_N "Additional directories to search for library files []: $ECHO_C"
 read a
 if [ "$a." != "." ]
 then
-        ADD_INC_DIRS=`echo "$a" | sed 's@  *@ @g; s@^\([^ ]\)@-I\1@; s@ \([^ ]\)@ -I\1@g'`
-        CPPFLAGS="$ADD_INC_DIRS" ; export CPPFLAGS
-        CFLAGS="$ADD_INC_DIRS" ; export CFLAGS
         ADD_LIB_DIRS=`echo "$a" | sed 's@  *@ @g; s@^\([^ ]\)@-L\1@; s@ \([^ ]\)@ -L\1@g'`
         LDFLAGS="$ADD_LIB_DIRS" ; export LDFLAGS
 fi