diff -ur sablevm-0.1.6.orig/configure.in sablevm-0.1.6/configure.in
--- sablevm-0.1.6.orig/configure.in	Fri Apr 27 21:14:41 2001
+++ sablevm-0.1.6/configure.in	Mon Jul  8 18:12:47 2002
@@ -47,12 +47,13 @@
 AC_LIBTOOL_DLOPEN
 AM_PROG_LIBTOOL
 
+dnl Required FreeBSD compile flags
+CFLAGS="$CFLAGS -D_P1003_1B_VISIBLE -pthread -I/usr/local/include -L/usr/local/lib"
+
 dnl Checks for libraries.
-AC_CHECK_LIB(dl,dlopen,echo -n,echo ***ERROR: libdl is missing; exit 1)
 AC_CHECK_LIB(ffi,ffi_prep_cif,echo -n,echo ***ERROR: libffi is missing; exit 1)
 AC_CHECK_LIB(m,fmod,echo -n,echo ***ERROR: libm is missing; exit 1)
 AC_CHECK_LIB(popt,poptGetContext,echo -n,echo ***ERROR: libpopt is missing; exit 1)
-AC_CHECK_LIB(pthread,pthread_self,echo -n,echo ***ERROR: libpthread is missing; exit 1)
 
 dnl Checks for header files.
 AC_HEADER_STDC