Re: The annoyance of repeating Makefiles

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On Tue, Jan 23, 2007 at 09:50:32AM -0500, Ken Murchison wrote:
> Gary Mills wrote:
> 
> >This behavior is annoying because I build the Cyrus software on a
> >development server but then install it on other servers where there
> >is no compiler and the source tree is mounted read-only.  This breaks
> >`make install', which should only install things, not recompile them.
> >Can this be fixed, or am I condemned to hack Makefiles myself?
> 
> A 'make install' shouldn't compile anything if all of the generated 
> files already exist.  I would consider this a bug and would gladly 
> accept a patch which fixes this behavior.

I've attached a patch, against cyrus-imapd-2.3.8, that does just that.

-- 
-Gary Mills-    -Unix Support-    -U of M Academic Computing and Networking-
--- imap/Makefile.Oin	Tue Jan  9 11:41:35 2007
+++ imap/Makefile.in	Sat Feb 10 09:50:27 2007
@@ -123,7 +123,7 @@
 	lmtpstats.c lmtpstats.h xversion.h mupdate_err.c mupdate_err.h \
 	nntp_err.c nntp_err.h
 
-all: $(BUILTSOURCES) $(PROGS) $(SUIDPROGS)
+all: xversion $(BUILTSOURCES) $(PROGS) $(SUIDPROGS)
 
 pure: imapd.pure lmtpd.pure mupdate.pure
 
@@ -151,11 +151,10 @@
 
 ### Built Source Files
 
-xversion:
-	rm -f version.o
+xversion xversion.h:
 	AWK=$(AWK) $(srcdir)/xversion.sh
 
-xversion.h: xversion
+version.o: xversion.h
 
 pushstats.c: pushstats.snmp $(srcdir)/../snmp/snmpgen
 	$(srcdir)/../snmp/snmpgen $(srcdir)/pushstats.snmp
@@ -199,7 +198,7 @@
 	 $(SERVICE) lmtpd.o proxy.o $(LMTPOBJS) $(SIEVE_OBJS) \
 	 mutex_fake.o libimap.a $(SIEVE_LIBS) $(DEPLIBS) $(LIBS) $(LIB_WRAP)
 
-imapd: xversion $(IMAPDOBJS) mutex_fake.o libimap.a $(DEPLIBS) $(SERVICE)
+imapd: $(IMAPDOBJS) mutex_fake.o libimap.a $(DEPLIBS) $(SERVICE)
 	$(CC) $(LDFLAGS) -o imapd \
 	 $(SERVICE) $(IMAPDOBJS) mutex_fake.o \
 	libimap.a $(DEPLIBS) $(LIBS) $(LIB_WRAP)
--- imap/xversion.Osh	Wed Oct 22 13:03:00 2003
+++ imap/xversion.sh	Sat Feb 10 08:04:31 2007
@@ -9,12 +9,13 @@
     AWK=awk
 fi
 
+TMPF=/tmp/xversion.$$
 DATEPAT=[1-2][0-9][0-9][0-9]/[0-1][0-9]/[0-3][0-9]
 TIMEPAT=[0-2][0-9]:[0-5][0-9]:[0-5][0-9]
 
-printf "/* Generated automatically by xversion.sh */\n\n" > xversion.h
+printf "/* Generated automatically by xversion.sh */\n\n" > $TMPF
 
-printf "#define CYRUS_CVSDATE " >> xversion.h
+printf "#define CYRUS_CVSDATE " >> $TMPF
 
 find .. -name '*.[chly]' -print | \
 	xargs egrep '\$Id: ' | \
@@ -22,4 +23,12 @@
 	match ($0, pattern) {
 	    printf "\"%s\"\n", substr($0, RSTART, RLENGTH)
 	}' pattern="$DATEPAT $TIMEPAT" | \
-	sort | tail -1 >> xversion.h
+	sort | tail -1 >> $TMPF
+
+if [ -f xversion.h ] && cmp -s $TMPF xversion.h
+then
+    rm $TMPF
+else
+    mv $TMPF xversion.h
+fi
+
--- perl/Makefile.Oin	Wed Oct 22 13:50:17 2003
+++ perl/Makefile.in	Fri Feb  9 17:54:37 2007
@@ -77,7 +77,7 @@
 	@for d in  $(SUBDIRS); \
 	do \
 		(cd $$d; echo "### Making" all "in" `pwd`;	\
-			if [ -f Makefile.PL ]; then \
+			if [ -f Makefile.PL -a ! -f Makefile ]; then \
 			   LIB_RT="$(LIB_RT)" \
 			   BDB_LIB="$(BDB_LIB)" BDB_INC="$(BDB_INC)" \
 			   OPENSSL_LIB="$(OPENSSL_LIB)" OPENSSL_INC="$(OPENSSL_INC)" \
--- perl/sieve/Makefile.Oin	Wed Oct 22 13:50:24 2003
+++ perl/sieve/Makefile.in	Fri Feb  9 18:02:16 2007
@@ -79,7 +79,7 @@
 	@for d in  $(SUBDIRS); \
 	do \
 		(cd $$d; echo "### Making" all "in" `pwd`;	\
-			if [ -f Makefile.PL ]; then \
+			if [ -f Makefile.PL -a ! -f Makefile ]; then \
 			   LIB_RT="$(LIB_RT)" \
 			   BDB_LIB="$(BDB_LIB)" BDB_INC="$(BDB_INC)" \
 			   OPENSSL_LIB="$(OPENSSL_LIB)" OPENSSL_INC="$(OPENSSL_INC)" \
----
Cyrus Home Page: http://cyrusimap.web.cmu.edu/
Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki
List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html

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