--- README-orig	2017-03-19 17:28:06.000000000 -0700
+++ README	2017-03-19 17:35:32.000000000 -0700
@@ -124,7 +124,11 @@
 treatment.  If you can send us fixes for these problems, we'd be
 grateful.
 
-   <none yet listed>
+FreeBSD 11.0
+  Please `pkg install' the following
+  - pkgconf : provides pkg-config
+  - gmake : /usr/bin/make does not work
+  - boehm-gc-threaded : needed for threaded support
 
 Guile specific flags Accepted by Configure =================================
 
--- configure.ac-orig	2017-03-19 17:14:46.000000000 -0700
+++ configure.ac	2017-03-19 17:22:47.000000000 -0700
@@ -1332,7 +1332,10 @@
 # Boehm's GC library
 #
 #--------------------------------------------------------------------
-PKG_CHECK_MODULES([BDW_GC], [bdw-gc >= 7.2])
+case $host in
+*-*-freebsd*) PKG_CHECK_MODULES([BDW_GC], [bdw-gc-threaded >= 7.2]) ;;
+*) PKG_CHECK_MODULES([BDW_GC], [bdw-gc >= 7.2]) ;;
+esac
 
 save_LIBS="$LIBS"
 LIBS="$BDW_GC_LIBS $LIBS"