--- a/configure.in
+++ b/configure.in
@@ -40,7 +40,7 @@
 AC_ARG_WITH(etcdir,--with-etcdir=DIR         Where to look for default config file [[/etc]],
 ETCDIR="${withval}",CACHE_ETC="yes")
 
-AC_ARG_WITH(gdlib,--with-gdlib=DIR          Where to additionally look for libgd.a,
+AC_ARG_WITH(gdlib,--with-gdlib=DIR          Where to additionally look for libgd.so,
 EXTRA_GDLIB="${withval}", EXTRA_GDLIB="")
 AC_ARG_WITH(gd,--with-gd=DIR             Where to additionally look for gd headers,
 EXTRA_GD="${withval}"; CFLAGS="-I${withval} ${CFLAGS}", EXTRA_GD="")
@@ -137,7 +137,7 @@
 fi
 
 if test "$HAVE_LIBGD" = ""; then
- AC_FIND_PATH(GDLOC,libgd.a,"", ${PREFIX}/lib ${PREFIX}/lib/gd /usr/local/lib /usr/local/lib/gd /usr/local/gd /usr/local/include /usr/local/include/gd /usr/lib/gd /usr/lib /lib ./ ./gd ../gd ${EXTRA_GDLIB} ${EXTRA_GD})
+ AC_FIND_PATH(GDLOC,libgd.so,"", ${PREFIX}/lib ${PREFIX}/lib/gd /usr/local/lib /usr/local/lib/gd /usr/local/gd /usr/local/include /usr/local/include/gd /usr/lib/gd /usr/lib /lib ./ ./gd ../gd ${EXTRA_GDLIB} ${EXTRA_GD})
  if test "$GDLOC" = ""; then
    AC_FIND_PATH(GDLOC,libgd.so,"", ${PREFIX}/lib ${PREFIX}/lib/gd /usr/local/lib /usr/local/lib/gd /usr/local/gd /usr/local/include /usr/local/include/gd /usr/lib/gd /usr/lib /lib ./ ./gd ../gd ${EXTRA_GDLIB} ${EXTRA_GD})
  fi
@@ -167,7 +167,7 @@
  fi
 
  dnl Check for GeoIP library
- AC_FIND_PATH(GEOIPLIB,libGeoIP.a,"", ${PREFIX}/lib /usr/local/lib /usr/lib /lib ${prefix}/lib ./ ${EXTRA_GEOIPLIB})
+ AC_FIND_PATH(GEOIPLIB,libGeoIP.so,"", ${PREFIX}/lib /usr/local/lib /usr/lib /lib ${prefix}/lib ./ ${EXTRA_GEOIPLIB})
  if test "$GEOIPLIB" = ""; then
   AC_MSG_ERROR(GeoIP library not found... please install GeoIP.)
  else