--- berkeleydb/makefile.mk	2009-09-26 08:52:35.000000000 +0900
+++ berkeleydb/makefile.mk	2009-09-26 08:54:31.000000000 +0900
@@ -102,6 +102,9 @@
 CONFIGURE_ACTION= \
 	..$/dist$/configure
 CONFIGURE_FLAGS=--disable-cxx --enable-dynamic --enable-shared --enable-compat185
+.IF "$(OS)"==FREEBSD && "$(COM)$(CPU)"=="GCCX"
+CONFIGURE_FLAGS+=--with-mutex=x86/gcc-assembly
+.ENDIF
 .IF "$(OS)"=="MACOSX"
 CONFIGURE_FLAGS+=CPPFLAGS="$(EXTRA_CDEFS)"
 .ENDIF