[pacman-dev] [PATCH 1/2] makepkg: add soprovides support

[Florian Pritz]

Support-by: brain0 <thomas at archlinux.org>
Support-by: GNU\caustic <Christoph.Schied at uni-ulm.de>

Signed-off-by: Florian Pritz <bluewind at xssn.at>
---
 scripts/makepkg.sh.in |   34 +++++++++++++++++++++++++++++++++-
 1 files changed, 33 insertions(+), 1 deletions(-)

diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index 131519f..584c427 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -869,6 +869,28 @@ tidy_install() {
 	fi
 }
 
+find_soprovides() {
+	local soprovides
+	find $pkgdir -type f -name \*.so\* | while read filename
+	do
+    if readelf -h "$filename" 2>/dev/null | grep -q '.*Type:.*DYN (Shared object file).*'; then
+			soarch="$(objdump -a "$filename" 2>/dev/null | \
+				sed -rn 's/.* file format elf[0-9]+-(.*)$/\1/p' | tr - _)_$(uname -s)"
+      sofile=$(readelf -d "$filename" 2>/dev/null | sed -nr 's/.*Library soname: \[(.*)\].*/\1/p')
+			[ -z "$sofile" ] && sofile="$(basename "$filename")"
+			
+			soname=$(sed -rn 's/(.*)\.so.*/\1.so/p' <<< "$sofile")
+			soversion=$(sed -rn 's/.*\.so\.(.*)/\1/p' <<< "$sofile")
+			if in_array "${soname}" ${provides[@]}; then
+				if ! in_array "${soname}=${soversion}-${soarch}" ${soprovides[@]}; then
+					echo "${soname}=${soversion}-${soarch}"
+					soprovides=(${soprovides[@]} "${soname}=${soversion}-${soarch}")
+				fi
+			fi
+    fi
+	done
+}
+
 write_pkginfo() {
 	local builddate=$(date -u "+%s")
 	if [[ -n $PACKAGER ]]; then
@@ -898,6 +920,9 @@ write_pkginfo() {
 		echo "force = true" >> .PKGINFO
 	fi
 
+	soprovides=$(find_soprovides)
+	provides=("${provides[@]}" ${soprovides})
+
 	local it
 	for it in "${license[@]}"; do
 		echo "license = $it" >>.PKGINFO
@@ -918,7 +943,14 @@ write_pkginfo() {
 		echo "conflict = $it" >>.PKGINFO
 	done
 	for it in "${provides[@]}"; do
-		echo "provides = $it" >>.PKGINFO
+		if grep -q ".*\.so$" <<< "$it"; then
+			if ! grep -q "\(^\|\s\)${it}=.*" <<< $soprovides; then
+				error "$(gettext "Can't find library listed in \$provides: %s")" "$it"
+				return 1
+			fi
+		else
+			echo "provides = $it" >>.PKGINFO
+		fi
 	done
 	for it in "${backup[@]}"; do
 		echo "backup = $it" >>.PKGINFO
-- 
1.7.0.4