This patch:
* ensures we link correctly
* allows us to optionally pass target information to configure rather than using uname
* select linux as the platform in most cases we care about

This is a merge of various tweaks to allow us to build pciutils including 
work from:

7/30/2010 - Qing He <qing.he@intel.com>
1/22/2012 - Shane Wang <shane.wang@intel.com>
Ionut Radu <ionutx.radu@intel.com>
2017/6/15 - RP - Cleanups and merging patches

Upstream-Status: Inappropriate [embedded specific]

Index: pciutils-3.5.6/Makefile
===================================================================
--- pciutils-3.5.6.orig/Makefile
+++ pciutils-3.5.6/Makefile
@@ -96,7 +96,7 @@ example: example.o lib/$(PCILIB)
 example.o: example.c $(PCIINC)
 
 %: %.o
-	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LIB_LDLIBS) $(LDLIBS) -o $@
 
 %.8 %.7: %.man
 	M=`echo $(DATE) | sed 's/-01-/-January-/;s/-02-/-February-/;s/-03-/-March-/;s/-04-/-April-/;s/-05-/-May-/;s/-06-/-June-/;s/-07-/-July-/;s/-08-/-August-/;s/-09-/-September-/;s/-10-/-October-/;s/-11-/-November-/;s/-12-/-December-/;s/\(.*\)-\(.*\)-\(.*\)/\3 \2 \1/'` ; sed <$< >$@ "s/@TODAY@/$$M/;s/@VERSION@/pciutils-$(VERSION)/;s#@IDSDIR@#$(IDSDIR)#"
Index: pciutils-3.5.6/lib/configure
===================================================================
--- pciutils-3.5.6.orig/lib/configure
+++ pciutils-3.5.6/lib/configure
@@ -9,6 +9,10 @@ echo_n() {
 	printf '%s' "$*"
 }
 
+VERSION=$1
+IDSDIR=$2
+DNS=yes
+
 if [ -z "$VERSION" -o -z "$IDSDIR" ] ; then
 	echo >&2 "Please run the configure script from the top-level Makefile"
 	exit 1
@@ -16,8 +20,8 @@ fi
 
 echo_n "Configuring libpci for your system..."
 if [ -z "$HOST" ] ; then
-	sys=`uname -s`
-	rel=`uname -r`
+	sys=${3:-`uname -s`}
+	rel=
 	realsys="$sys"
 	if [ "$sys" = "AIX" -a -x /usr/bin/oslevel -a -x /usr/sbin/lsattr ]
 	then
@@ -25,7 +29,7 @@ if [ -z "$HOST" ] ; then
 		proc=`/usr/sbin/lsdev -C -c processor -S available -F name | head -1`
 		cpu=`/usr/sbin/lsattr -F value -l $proc -a type | sed 's/_.*//'`
 	else
-		cpu=`uname -m | sed 's/^i.86$/i386/;s/^sun4u$/sparc64/;s/^i86pc$/i386/;s/^BePC$/i386/;s/^BeMac$/powerpc/;s/^BeBox$/powerpc/'`
+		cpu=${4:-`uname -m | sed 's/^i.86$/i386/;s/^sun4u$/sparc64/;s/^i86pc$/i386/;s/^BePC$/i386/;s/^BeMac$/powerpc/;s/^BeBox$/powerpc/'`}
 	fi
 	if [ "$sys" = "GNU/kFreeBSD" -o "$sys" = "DragonFly" ]
 	then
@@ -35,7 +39,7 @@ if [ -z "$HOST" ] ; then
 	then
 		sys=cygwin
 	fi
-	HOST=${3:-$cpu-$sys}
+	HOST=$cpu-$sys
 fi
 [ -n "$RELEASE" ] && rel="${RELEASE}"
 # CAVEAT: tr on Solaris is a bit weird and the extra [] is otherwise harmless.
@@ -44,6 +48,8 @@ cpu=`echo $host | sed 's/^\([^-]*\)-\([^
 sys=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo " $host $rel $cpu $sys"
 
+{ echo "$host" | grep linux; } && sys=linux
+
 c=config.h
 m=config.mk
 echo >$c '#define PCI_CONFIG_H'