find-debuginfo.sh change for gdb index

[Tom Tromey]

Hi Panu.  Roland suggested I contact you as the Fedora RPM maintainer.

This patch adds gdb index creation to find-debuginfo.sh, in support of a
feature I'm proposing for Fedora 14:

    https://fedoraproject.org/wiki/Features/GdbIndex

I've tested this just by building some RPMs locally.

If you'd prefer, I can open a bug in bugzilla for this.

I don't know what other changes may be needed to ensure that the proper
gdb is in the buildroots when this script is run.  Also, the proper gdb
is not actually available yet; cleaning up that patch series is my next
task.

I think this should probably be local to Fedora, but if you think it
should go into upstream RPM, I am happy to try that.

Tom

--- find-debuginfo.sh.orig	2010-06-29 16:19:42.000000000 -0600
+++ find-debuginfo.sh	2010-06-29 15:52:08.000000000 -0600
@@ -96,6 +96,15 @@
   chmod 444 "$1" || exit
 }
 
+# Create a gdb .index file for $1.
+make_gdb_index()
+{
+  local f="$1"
+  local d="${f%/*}"
+  # We don't care if gdb gives an error.
+  gdb --batch-silent -ex "file $f" -ex "maintenance save-gnu-index $d" > /dev/null 2>&1
+}
+
 # Make a relative symlink to $1 called $3$2
 shopt -s extglob
 link_relative()
@@ -224,9 +233,15 @@
     chmod u-w "$f"
   fi
 
+  make_gdb_index "$debugfn"
+
   if [ -n "$id" ]; then
     make_id_link "$id" "$dn/$(basename $f)"
     make_id_link "$id" "/usr/lib/debug$dn/$bn" .debug
+
+    if [ -f "${debugfn}.index" ]; then
+      make_id_link "$id" "/usr/lib/debug$dn/$bn" .debug
+    fi
   fi
 done || exit