Add pkg-config to prereqs.

diff --git a/README b/README
index 317b83697d1e39788be3ea46d4593a998ffb0383..b88217f021aba1c8f0645ebc6a65600d2c724f10 100644 (file)
--- a/README
+++ b/README
@@ -19,6 +19,9 @@ PSPP, you will need to install certain prerequisites:
     * Perl, version 5.005_03 or later.  (Perl is required during build
       but not after installation.)
 
+    * pkg-config (only if you need to regenerate configure after
+      modifying configure.ac).
+
     * Optional: libncurses.  Without it, PSPP will assume it is
       running in an 80x25 terminal.