Add version string in binary and simplify build.

src/tlcl/Makefile

Index: src/tlcl/Makefile
diff --git a/src/tlcl/Makefile b/src/tlcl/Makefile
index cb59b95c7002a8274e91ae10eb87c30eac6e8076..791ff5da1fec74dad1f8ab34f20d53d221033929 100644
--- a/src/tlcl/Makefile
+++ b/src/tlcl/Makefile
@@ -18,18 +18,25 @@ HOSTCC = cc
 libtlcl.a: tlcl.o
 	ar rcs libtlcl.a tlcl.o
 
-tlcl.o: tlcl.c tlcl_internal.h tlcl.h structures.h
+tlcl.o: tlcl.c tlcl_internal.h tlcl.h \
+	update-structures structures.h update-version version.h
 
-structures.h: generator
-	./generator > structures.h
-	sed -e '0,/This file is automatically/d' < structures.h > x.tmp
-	sed -e '0,/This file is automatically/d' < saved-structures.h > y.tmp
-	cmp -s x.tmp y.tmp || \
-		(echo "Please update saved-structures.h" && false)
+update-structures: generator
+	./generator > structures.tmp
+	cmp -s structures.tmp structures.h || \
+		( echo "%% Updating structures.h %%" && \
+		  cp structures.tmp structures.h )
+
+update-version:
+	find \( -name '*.[ch]' -o -name 'Makefile*' \) -a \! -name version.h \
+		| sort | xargs cat | md5sum | cut -c 25-32 > x.tmp
+	echo "char* TlclVersion = \"TLCLv=$$(cat x.tmp)\";" > version.tmp
+	cmp -s version.tmp version.h || \
+		( echo "** Updating version.h **" && cp version.tmp version.h )
 
 generator: generator.c tlcl.h
 	$(HOSTCC) $(LOCAL_CFLAGS) -I$(ROOT)/usr/include \
 	-fpack-struct generator.c -o generator
 
 clean:
-	rm -f generator *.o *.a structures.h x.tmp y.tmp *~
+	rm -f generator *.o *.a version.tmp structures.tmp x.tmp *~