fetch_depends extended to make sure that internal dependencies are not

accidentally picked from an already installed revision of the same software.

Only list a dependency once in the relnotes.

Irix 6.2 ldd is too stupid to be used to extract dependencies since it will
just abort if one of the libraries are missing. We use Ariel Faigons perl
version of ldd originally written for Irix 5.3 (which lacks ldd) instead.

Also we need to use GNU xargs which supports -r (--no-run-if-empty) to
avoid running showfiles on empty input since otherwise it will list all
installed packages.

Exclude patchSG* packages from depends

buildpkg.packaging.irix

@@ -399,21 +399,38 @@ fetch_subsysdesc()
 #
 fetch_depends()
 {
+    local reqidx=0
+    local havedep=0
     [ -r ${depends} ] && $CAT ${depends} > ${depends}_all
     [ -r ${depends}_auto ] && $CAT ${depends}_auto >> ${depends}_all
     if [ -r ${depends}_all ]; then
-	reqidx=0
 	while read ss reqpkg reqvers
 	do
-	    reqs[$reqidx]=$ss
+	    havedep=0
 	    if [ "$reqvers" == "auto" ]; then # auto create depend on $reqpkg (assumed internal)
 		nver=$(fix_ver "$version-$pkgver")
 		req="$pkgname.$reqpkg $nver $nver"
+		havedep=1
 	    else
-		req="$reqpkg $reqvers"
+		# When rebuilding a package we want to avoid the autodeps
+		# from adding deps on the already installed parts.
+		# Internal deps must be handled in depends with the auto keyword
+		# or chaos will ensue.
+		# We will try to check if the package name in the autodep matches the 
+		# package we're building
+		if [ ! "${reqpkg%%.*}" == "$pkgname" ]; then 
+		    req="$reqpkg $reqvers"
+		    havedep=1
+		else
+		    echo "skipping depend: $ss $reqpkg $reqvers"
+		fi
+	    fi
+	    # Only increment and update arrays if we actually add the dep
+	    if [ $havedep -gt 0 ]; then
+		reqs[$reqidx]=$ss
+		reqp[$reqidx]=$req
+		let "reqidx = $reqidx + 1"
 	    fi
-	    reqp[$reqidx]=$req
-	    let "reqidx = $reqidx + 1"
 	done < ${depends}_all
     fi
 }
@@ -880,7 +897,7 @@ auto_rel()
 	local extracted_env="${temp_extracted_env%\\*}"
 	# FIXME: expensive use of perl
 	if [ -r ${depends}_all ]; then
-	    local temp_deps="$($CAT ${depends}_all | $GREP $pkgprefix | $SED -e "s/.*${pkgprefix}//" | $CUT -d. -f1 | $PERL -i -pe 's/\n/\\\n/')"
+	    local temp_deps="$($CAT ${depends}_all | $GREP $pkgprefix | $SED -e "s/.*${pkgprefix}//" | $CUT -d. -f1 | $PERL -i -pe 's/\n/\\\n/' | $SORT -u)"
 	else
 	    local temp_deps=""
 	fi
@@ -933,27 +950,33 @@ extract_deps()
     if [ -n "$exelist" ]; then
 	for f in $exelist; do
 	    [ -r $f -a -x $f ] || continue
-	    $LDD $f | $GREP \= | $AWK -F'	' '{ print $3 }'  | $CUT -d\  -f2
+	    # Generic Irix ldd
-	done | $SORT -u | $XARGS $SHOWFILES -- | $AWK '{ print $4 }' | $SORT -u
+	    # $LDD $f | $GREP \= | $AWK -F'	' '{ print $3 }'  | $CUT -d\  -f2
+	    # Ariel Faigons perl5 ldd
+	    $LDD $f | $GREP \= | $GREP -v 'not found' | $SED -e 's/.*=> //g'
+	done | $SORT -u | $XARGS -r $SHOWFILES -- | $AWK '{ print $4 }' | $SORT -u
     fi
     # Compute dependencies for dynamic libraries
     if [ -n "$liblist" ]; then
 	for f in $liblist; do
-	    [ -r $f -a -x $f ] || continue
+	    [ -r $f ] || continue
-	    $LDD $f | $GREP \= | $AWK -F'	' '{ print $3 }'  | $CUT -d\  -f2
+	    # Generic Irix ldd
-	done | $SORT -u | $XARGS $SHOWFILES -- | $AWK '{ print $4 }' | $SORT -u
+	    #$LDD $f | $GREP \= | $AWK -F'	' '{ print $3 }'  | $CUT -d\  -f2
+	    # Ariel Faigon's perl5 ldd
+	    $LDD $f | $GREP \= | $GREP -v 'not found' | $SED -e 's/.*=> //g'
+	done | $SORT -u | $XARGS -r $SHOWFILES -- | $AWK '{ print $4 }' | $SORT -u
     fi
     # Compute dependencies for scripts
     if [ -n "$scriptlist" ]; then
 	for f in $scriptlist; do
 	    [ -r $f -a -x $f ] || continue
-	    interp=$HEAD -n 1 $f | $CUT -d\! -f2-
+	    interp="$($HEAD -n 1 $f | $CUT -d\! -f2-)"
-	    if [ -L $interp ]; then
+	    if [ -L "$interp" ]; then
-		echo $($FILE -h $interp | $SED -e 's/.* to //')
+		echo $($FILE -h "$interp" | $SED -e 's/.* to //')
 	    else
 		echo $interp
 	    fi
-	done | $SORT -u | $XARGS $SHOWFILES -- | $AWK '{ print $4 }' | $SORT -u
+	done | $SORT -u | $XARGS -r $SHOWFILES -- | $AWK '{ print $4 }' | $SORT -u
     fi
 }
 
@@ -972,7 +995,7 @@ auto_deps()
     subsystems="$($AWK '{ print $7 }' < $idbfile | $SORT -u | $GREP sw)"
     for i in $subsystems
     do
-	deps="$(extract_deps $i)"
+	deps="$(extract_deps $i | $GREP -v patchSG)"
 	for j in $deps
 	do
 	    echo "${i#*.} $j $($SHOWPRODS -n $j | $GREP $j | $AWK '{ print $3 }') maxint"