abuild: only scan /lib /usr/lib, $rpath and $ldpath for provides

This is to avoid scan dlopen'ed plugins.

We scan any rpath set by any subpackage from same apkbuild. If it depends
on rpath to other package, developer will have to add that to ldpath.

This change means we have to move generation of .provides-so and .needs-so
til after all .rpaths are generated.

abuild.in

@@ -778,33 +778,10 @@ prepare_tracedeps() {
 	local etype= soname= file= sover=
 	[ "$arch" = "noarch" ] && return 0
 	options_has "!tracedeps" && return 0
-	# lets tell all the .so files this package provides in .provides-so
-	scanelf --recursive --nobanner --soname "$dir" | while read etype soname file; do
-		# if soname field is missing, soname will be the filepath
-		# we only want shared libs
-		sover=0
-		case $soname in
-		*.so|*.so.[0-9]*)
-			soname=${soname##*/}
-			case "$file" in
-			*.so.[0-9]*) sover=${file##*.so.};;
-			esac
-			echo "$soname $sover"
-			;;
-		esac
-	done >"$controldir"/.provides-so
 	# lets tell all the places we should look for .so files - all rpaths
-	scanelf -q -Rr "$dir" | sed -e 's/[[:space:]].*//' -e 's/:/\n/' \
+	scanelf --quiet --recursive --rpath "$dir" \
-		| sort | uniq \
+		| sed -e 's/[[:space:]].*//' -e 's/:/\n/' | sort -u \
 		>"$controldir"/.rpaths
-	# now find the so dependencies
-	scanelf -Rn "$dir" | tr ' ' ':' | awk -F ":" '$1 == "ET_DYN" || $1 == "ET_EXEC" {print $2}'  \
-		| sed 's:,:\n:g' | sort | uniq \
-	| while read i; do
-		# only add files that are not self provided
-		grep -q -w "^$i" "$controldir"/.provides-so \
-			|| echo $i >> "$controldir"/.needs-so
-	done
 }
 
 # check if dir has arch specific binaries
@@ -878,7 +855,7 @@ trace_apk_deps() {
 	local name="$1"
 	local dir="$2"
 	local i= j= found= autodeps= deppkgs= missing= so_paths= self_provided=
-	msg "Tracing dependencies for $name..."
+	msg "Tracing dependencies..."
 	# add pkgconfig if usr/lib/pkgconfig is found
 	if [ -d "$pkgbasedir"/$name/usr/lib/pkgconfig ] \
 			&& ! grep -q '^depend = pkgconfig' "$dir"/.PKGINFO; then
@@ -938,19 +915,83 @@ trace_apk_deps() {
 	done
 }
 
+find_scanelf_paths() {
+	local controldir="$1" datadir="$2"
+	local paths="$datadir/lib:$datadir/usr/lib" i= rpath=
+	if [ -n "$ldpath" ]; then
+		paths="$paths:$ldpath"
+	fi
+	# search in all rpaths
+	for rpath in "$pkgbasedir"/.control.*/.rpath; do
+		[ -f "$rpath" ] || continue
+		while read i; do
+			if [ -d "$datadir/$i" ]; then
+				paths="$paths:$datadir/$i"
+			fi
+		done < "$rpath"
+	done
+	echo "$paths"
+}
+
+scan_shared_objects() {
+	local name="$1" controldir="$2" datadir="$3"
+
+	# allow spaces in paths
+	IFS=:
+	set -- $(find_scanelf_paths "$controldir" "$datadir")
+	unset IFS
+
+	msg "Scanning shared objects"
+	# lets tell all the .so files this package provides in .provides-so
+	scanelf --nobanner --soname "$@" | while read etype soname file; do
+		# if soname field is missing, soname will be the filepath
+		# we only want shared libs
+		sover=0
+		case $soname in
+		*.so|*.so.[0-9]*)
+			soname=${soname##*/}
+			case "$file" in
+			*.so.[0-9]*) sover=${file##*.so.};;
+			esac
+			echo "$soname $sover"
+			;;
+		esac
+	done > "$controldir"/.provides-so
+
+	# now find the so dependencies
+	scanelf --nobanner --recursive --needed "$datadir"  | tr ' ' ':' \
+		| awk -F ":" '$1 == "ET_DYN" || $1 == "ET_EXEC" {print $2}'  \
+		| sed 's:,:\n:g' | sort -u \
+	| while read i; do
+		# only add files that are not self provided
+		grep -q -w "^$i" "$controldir"/.provides-so \
+			|| echo $i
+	done > "$controldir"/.needs-so
+}
+
 create_apks() {
-	local file
+	local file= dir= name= ver= apk= datadir=
 	getpkgver || return 1
 	mkdir -p "$PKGDEST"
+	if [ "$arch" != "noarch" ] && ! options_has "!tracedeps"; then
 		for file in "$pkgbasedir"/.control.*/.PKGINFO; do
-		local dir="${file%/.PKGINFO}"
+			dir="${file%/.PKGINFO}"
-		local name=$(pkginfo_val pkgname $file)
+			name="$(pkginfo_val pkgname $file)"
-		local ver=$(pkginfo_val pkgver $file)
+			datadir="$pkgbasedir"/$name
-		local apk=$name-$ver.apk
+			subpkgname=$name
-		local datadir="$pkgbasedir"/$name
+			scan_shared_objects "$name" "$dir" "$datadir"
+		done
+	fi
+	for file in "$pkgbasedir"/.control.*/.PKGINFO; do
+		dir="${file%/.PKGINFO}"
+		name=$(pkginfo_val pkgname $file)
+		ver=$(pkginfo_val pkgver $file)
+		apk=$name-$ver.apk
+		datadir="$pkgbasedir"/$name
+		subpkgname=$name
 
 		trace_apk_deps "$name" "$dir" || return 1
-		msg "Creating $apk..."
+		msg "Compressing data..."
 		(
 		cd "$datadir"
 		# data.tar.gz
@@ -961,6 +1002,7 @@ create_apks() {
 		fi
 		tar -c "$@" | abuild-tar --hash | gzip -9 >"$dir"/data.tar.gz
 
+		msg "Create checksum..."
 		# append the hash for data.tar.gz
 		local sha256=$(sha256sum "$dir"/data.tar.gz | cut -f1 -d' ')
 		echo "datahash = $sha256" >> "$dir"/.PKGINFO
@@ -971,10 +1013,12 @@ create_apks() {
 			| gzip -9 > control.tar.gz
 		abuild-sign -q control.tar.gz || exit 1
 
+		msg "Create $apk"
 		# create the final apk
 		cat control.tar.gz data.tar.gz > "$PKGDEST"/$apk
 		)
 	done
+	subpkgname=
 }
 
 clean_abuildrepo() {