From 419282d39960cc0ee5bac6d09c8c923ee3884d86 Mon Sep 17 00:00:00 2001
From: "Kevin P. Fleming" <kpfleming@digium.com>
Date: Wed, 30 Jul 2008 15:39:37 +0000
Subject: [PATCH] use better version.c creation process, and better dependency
 tracking process too

git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.4@606 2fbb986a-6c06-0410-b554-c9c1f0a7f128
---
 Makefile |  26 ++++++------
 mkdep    | 125 -------------------------------------------------------
 2 files changed, 14 insertions(+), 137 deletions(-)
 delete mode 100755 mkdep

diff --git a/Makefile b/Makefile
index cfe775e..197db4d 100644
--- a/Makefile
+++ b/Makefile
@@ -76,7 +76,7 @@ PROC=ultrasparc
 CFLAGS += -mtune=$(PROC) -O3 -pipe -fomit-frame-pointer -mcpu=v8
 endif
 
-all: depend $(STATIC_LIBRARY) $(DYNAMIC_LIBRARY)
+all: $(STATIC_LIBRARY) $(DYNAMIC_LIBRARY)
 
 update:
 	@if [ -d .svn ]; then \
@@ -131,12 +131,13 @@ testprilib: testprilib.o
 pridump: pridump.o
 	$(CC) -o pridump pridump.o -L. -lpri $(CFLAGS)
 
-ifneq ($(wildcard .depend),)
-include .depend
-endif
+MAKE_DEPS= -MD -MT $@ -MF .$(subst /,_,$@).d -MP
 
-%.lo : %.c
-	$(CC) $(CFLAGS) -o $@ -c $<
+%.o: %.c
+	$(CC) $(CFLAGS) $(MAKE_DEPS) -c -o $@ $<
+
+%.lo: %.c
+	$(CC) $(CFLAGS) $(MAKE_DEPS) -c -o $@ $<
 
 $(STATIC_LIBRARY): $(STATIC_OBJS)
 	ar rcs $(STATIC_LIBRARY) $(STATIC_OBJS)
@@ -147,7 +148,7 @@ $(DYNAMIC_LIBRARY): $(DYNAMIC_OBJS)
 	$(LDCONFIG) $(LDCONFIG_FLAGS) .
 	ln -sf libpri.so.$(SONAME) libpri.so
 
-version.c:
+version.c: FORCE
 	@build_tools/make_version_c > $@.tmp
 	@cmp -s $@.tmp $@ || mv $@.tmp $@
 	@rm -f $@.tmp
@@ -156,11 +157,12 @@ clean:
 	rm -f *.o *.so *.lo *.so.$(SONAME)
 	rm -f testprilib $(STATIC_LIBRARY) $(DYNAMIC_LIBRARY)
 	rm -f pritest pridump
-	rm -f .depend
+	rm -f .*.d
 
-depend: .depend
+.PHONY:
 
-.depend: 
-	CC="$(CC)" ./mkdep ${CFLAGS} `ls *.c`
+FORCE:
 
-.PHONY: version.c
+ifneq ($(wildcard .*.d),)
+   include .*.d
+endif
diff --git a/mkdep b/mkdep
deleted file mode 100755
index 1042840..0000000
--- a/mkdep
+++ /dev/null
@@ -1,125 +0,0 @@
-#!/bin/sh -
-#
-#	$OpenBSD: mkdep.gcc.sh,v 1.8 1998/09/02 06:40:07 deraadt Exp $
-#	$NetBSD: mkdep.gcc.sh,v 1.9 1994/12/23 07:34:59 jtc Exp $
-#
-# Copyright (c) 1991, 1993
-#	The Regents of the University of California.  All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-#    must display the following acknowledgement:
-#	This product includes software developed by the University of
-#	California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-#    may be used to endorse or promote products derived from this software
-#    without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-#	@(#)mkdep.gcc.sh	8.1 (Berkeley) 6/6/93
-#
-
-D=.depend			# default dependency file is .depend
-append=0
-pflag=
-
-while :
-	do case "$1" in
-		# -a appends to the depend file
-		-a)
-			append=1
-			shift ;;
-
-		# -f allows you to select a makefile name
-		-f)
-			D=$2
-			shift; shift ;;
-
-		# the -p flag produces "program: program.c" style dependencies
-		# so .o's don't get produced
-		-p)
-			pflag=p
-			shift ;;
-		*)
-			break ;;
-	esac
-done
-
-if [ $# = 0 ] ; then
-	echo 'usage: mkdep [-p] [-f depend_file] [cc_flags] file ...'
-	exit 1
-fi
-
-DTMP=/tmp/mkdep$$
-TMP=$DTMP/mkdep
-
-um=`umask`
-umask 022
-if ! mkdir $DTMP ; then
-	echo failed to create tmp dir $DTMP
-	exit 1
-fi
-
-umask $um
-trap 'rm -rf $DTMP ; trap 2 ; kill -2 $$' 1 2 3 13 15
-
-if [ x$pflag = x ]; then
-	${CC:-cc} -M "$@" 2>/dev/null | sed -e 's; \./; ;g' > $TMP
-else
-	${CC:-cc} -M "$@" 2>/dev/null | sed -e 's;\.o :; :;' -e 's; \./; ;g' > $TMP
-fi
-
-if [ $? != 0 ]; then
-	echo 'mkdep: compile failed.'
-	rm -rf $DTMP
-	exit 1
-fi
-
-if [ $append = 1 ]; then
-	cat $TMP >> $D
-	if [ $? != 0 ]; then
-		echo 'mkdep: append failed.'
-		rm -rf $DTMP
-		exit 1
-	fi
-	cat $TMP | sed -e 's/\.o:/.lo:/g' >>$D
-	if [ $? != 0 ]; then
-		echo 'mkdep: append failed.'
-		rm -rf $DTMP
-		exit 1
-	fi
-else
-	cat $TMP > $D
-	if [ $? != 0 ]; then
-		echo 'mkdep: overwrite failed.'
-		rm -rf $DTMP
-		exit 1
-	fi
-	cat $TMP | sed -e 's/\.o:/.lo:/g' >>$D
-	if [ $? != 0 ]; then
-		echo 'mkdep: append failed.'
-		rm -rf $DTMP
-		exit 1
-	fi
-fi
-
-rm -rf $DTMP
-exit 0