--- gforth/configure.in	2003/08/17 22:52:33	1.128
+++ gforth/configure.in	2003/09/08 13:03:06	1.135
@@ -21,12 +21,12 @@ dnl Process this file with autoconf to p
 
 dnl We use some automake macros here,
 dnl but don't use automake for creating Makefile.in
-AC_INIT([gforth],[0.6.1-20030806],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
+AC_INIT([gforth],[0.6.2],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
 AC_PREREQ(2.54)
 #snapshots have numbers major.minor.release-YYYYMMDD
 #note that lexicographic ordering must be heeded.
 #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
-UPDATED="August 6, 2003"
+UPDATED="August 25, 2003"
 AC_SUBST(UPDATED)
 AC_CONFIG_HEADERS(engine/config.h)
 
@@ -42,6 +42,12 @@ AC_ARG_ENABLE(force-reg,
 			  but also incorrect code with some gcc versions on
 			  some processors (default disabled).],
 AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)]))
+AC_SUBST(PROFEXES)
+AC_SUBST(PROFOBJS)
+AC_ARG_ENABLE(prof,
+[  --enable-prof          Build gforth-prof, which outputs frequently occuring
+                          sequences of primitives.],
+PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o")
 
 AC_ARG_WITH(debug,
 [  --with-debug		  specifies option -g to compile with debug info
@@ -134,7 +140,8 @@ case "$host_cpu" in
 		machine=hppa
 		$srcdir/mkinstalldirs arch/hppa
 		AC_LIBOBJ(../arch/hppa/cache)
-		#LDFLAGS="$LDFLAGS -Xlinker -N"
+		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
+		LDFLAGS="$LDFLAGS -Xlinker -N"
 		LIBS="$LIBS -L/lib/pa1.1/"
 		;;
 	sparc*)
@@ -155,6 +162,9 @@ case "$host_cpu" in
 		CFLAGS="$CFLAGS -march=pentium"
 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
 		;;
+	x86_64)
+		machine=amd64
+		;;
 #generic should work for IA64
 #	ia64*)
 #		machine=ia64
@@ -323,6 +333,12 @@ AC_TRY_COMPILE(,,ac_nocrossjumping=yes;E
 CFLAGS="$CFLAGS_1"
 AC_MSG_RESULT($ac_nocrossjumping)
 
+# Try if GCC understands __attribute__((unused))
+AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
+AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
+AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
+AC_MSG_RESULT($MAYBE_UNUSED)
+
 AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
 AC_SUBST(asm_fs)
 
@@ -450,8 +466,11 @@ AC_CHECK_LIB(callback,__vacall_r)
 AC_CHECK_LIB(vacall,vacall)
 AC_CHECK_LIB(trampoline,alloc_trampoline)
 FFCALLFLAG="false"
-test $ac_cv_lib_avcall___builtin_avcall = yes && FFCALLFLAG="true" && AC_DEFINE(HAS_FFCALL,,[define this if you want to use the ffcall libraries])
+OLDCALLFLAG="true"
+test $ac_cv_lib_avcall___builtin_avcall = yes && FFCALLFLAG="true" && OLDCALLFLAG="false" && AC_DEFINE(HAS_FFCALL,,[define this if you want to use the ffcall libraries])
+test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
 AC_SUBST(FFCALLFLAG)
+AC_SUBST(OLDCALLFLAG)
 if test "$host_os" != "nextstep3"
 then
 	AC_FUNC_MEMCMP