https://bugs.gentoo.org/572038
https://git.savannah.gnu.org/cgit/libtool.git/commit/?id=3221f9f0fb98d5740ab5d0e8db6a731302520644
https://git.savannah.gnu.org/cgit/libtool.git/commit/?id=b8cad780da77b7cf3aae1b660be3298b7fc48d1e
https://lists.gnu.org/archive/html/libtool/2024-05/msg00018.html
--- ltmain.sh
+++ ltmain.sh
@@ -5768,7 +5768,7 @@
 	       test "$hardcode_direct_absolute" = no; then
 	      add="$libdir/$linklib"
 	    elif test "$hardcode_minus_L" = yes; then
-	      add_dir="-L$libdir"
+	      add_dir="-L${SYSROOT}$libdir"
 	      add="-l$name"
 	    elif test "$hardcode_shlibpath_var" = yes; then
 	      case :$finalize_shlibpath: in
@@ -5785,7 +5785,7 @@
 	      fi
 	    else
 	      # We cannot seem to hardcode it, guess we'll fake it.
-	      add_dir="-L$libdir"
+	      add_dir="-L${SYSROOT}/$libdir"
 	      # Try looking first in the location we're being installed to.
 	      if test -n "$inst_prefix_dir"; then
 		case $libdir in