Add version string in binary and simplify build.

src/tlcl/Makefile

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 INCLUDEDIRS = -I../../../../third_party/tpm-emulator/tpmd/unix
 LOCAL_CFLAGS = -g -Wall -Werror $(INCLUDEDIRS)
 CFLAGS += $(LOCAL_CFLAGS)
 # CFLAGS += -ansi -pedantic
 ifeq ($(USE_TPM_EMULATOR),1)
 CFLAGS += -DUSE_TPM_EMULATOR=1
 else
 CFLAGS += -DUSE_TPM_EMULATOR=0
 endif
 
 CC ?= cc
 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 *~