From 85b402cb08956fb6b434968430b52d16d5b33f1f Mon Sep 17 00:00:00 2001
From: merakor <cem@ckyln.com>
Date: Fri, 23 Apr 2021 20:53:28 +0000
Subject: pkg_fix_depends: support multilib by resolving fullpath

FossilOrigin-Name: 2aaf44b696b5d66754f9886c20e9f705ae736213c8daa63e55620f239b0a92ef
---
 src/cpt-lib.in | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/src/cpt-lib.in b/src/cpt-lib.in
index 5416efe..da84659 100644
--- a/src/cpt-lib.in
+++ b/src/cpt-lib.in
@@ -882,11 +882,19 @@ pkg_strip() {
     done 2>/dev/null ||:
 }
 
+pkg_fix_deps_fullpath() {
+    # Return the canonical path of libraries extracted by readelf.
+    while read -r dep _ rslv _; do
+        [ "$dep" = "$1" ] || continue
+        printf '%s\n' "$rslv"
+    done
+}
+
 pkg_fix_deps() {
     # Dynamically look for missing runtime dependencies by checking each binary
     # and library with either 'ldd' or 'readelf'. This catches any extra
     # libraries and or dependencies pulled in by the package's build suite.
-    log "$1" "Checking for missing dependencies"
+    log "$1" "Checking for missing dependencies (using ${elf_prog##*/})"
 
     # Go to the directory containing the built package to
     # simplify path building.
@@ -911,9 +919,15 @@ pkg_fix_deps() {
     find "$pkg_dir/$pkg_name/" -type f 2>/dev/null |
 
     while read -r file; do
+        # We call ldd regardless here, because we also use it to retrieve the
+        # fullpath of a library when using readelf. Best use we have here is
+        # saving it in a buffer, so we don't use the dynamic loader everytime we
+        # need to reference it.
+        lddbuf=$(ldd -- "$file" 2>/dev/null) ||:
+
         case ${elf_prog:-ldd} in
             *readelf) "$elf_prog" -d "$file" 2>/dev/null  ;;
-            *)        ldd "$file" 2>/dev/null  ;;
+            *)        pirntf '%s\n' "$lddbuf" ;;
         esac |
         while read -r dep; do
             # Skip lines containing 'ldd'.
@@ -925,6 +939,12 @@ pkg_fix_deps() {
             dep=${dep##*\[}
             dep=${dep%%\]*}
 
+            # Retrieve the fullpath of the library from our ldd buffer.
+            case $elf_prog in
+                *readelf) line=$(printf '%s\n' "$lddbuf" |
+                                 pkg_fix_deps_fullpath "$line")
+            esac
+
             # ldd output:
             # libc.so => /lib/ld-musl-x86_64.so.1
             dep=${dep#* => }
-- 
cgit v1.2.3