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authorThierry Vignaud <tv@mageia.org>2012-07-27 17:38:50 +0000
committerThierry Vignaud <tv@mageia.org>2012-07-27 17:38:50 +0000
commite8cee3d3957786e8682ddf7077659575a2cf8052 (patch)
tree4d7470b2af92def5f6ffd4a1ee7e58b104b003c0 /find-debuginfo.sh
parent745375fc12c97c3560fed10a066a5cdc6f8cd457 (diff)
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add support for mini debug packages (disabled by default)
(https://fedoraproject.org/wiki/Features/MiniDebugInfo)
Diffstat (limited to 'find-debuginfo.sh')
-rwxr-xr-xfind-debuginfo.sh37
1 files changed, 36 insertions, 1 deletions
diff --git a/find-debuginfo.sh b/find-debuginfo.sh
index 3427fdb..c2bc7df 100755
--- a/find-debuginfo.sh
+++ b/find-debuginfo.sh
@@ -2,7 +2,7 @@
#find-debuginfo.sh - automagically generate debug info and file list
#for inclusion in an rpm spec file.
#
-# Usage: find-debuginfo.sh [--strict-build-id] [-g] [-r]
+# Usage: find-debuginfo.sh [--strict-build-id] [-g] [-r] [-m]
# [-o debugfiles.list]
# [[-l filelist]... [-p 'pattern'] -o debuginfo.list]
# [builddir]
@@ -29,6 +29,9 @@ strip_g=false
# with -r arg, pass --reloc-debug-sections to eu-strip.
strip_r=false
+# with -m arg, add minimal debuginfo to binary.
+include_minidebug=false
+
# Barf on missing build IDs.
strict=false
@@ -43,6 +46,9 @@ while [ $# -gt 0 ]; do
-g)
strip_g=true
;;
+ -m)
+ include_minidebug=true
+ ;;
-o)
if [ -z "${lists[$nout]}" -a -z "${ptns[$nout]}" ]; then
out=$2
@@ -106,6 +112,32 @@ strip_to_debug()
[ -n "$DISABLE_DEBUG" ] || chmod 444 "$1" || exit
}
+add_minidebug()
+{
+ local debuginfo="$1"
+ local binary="$2"
+
+ local dynsyms=`mktemp`
+ local funcsyms=`mktemp`
+ local keep_symbols=`mktemp`
+ local mini_debuginfo=`mktemp`
+
+ # Extract the dynamic symbols from the main binary, there is no need to also have these
+ # in the normal symbol table
+ nm -D "$binary" --format=posix --defined-only | awk '{ print $1 }' | sort > "$dynsyms"
+ # Extract all the text (i.e. function) symbols from the debuginfo
+ nm "$debuginfo" --format=posix --defined-only | awk '{ if ($2 == "T" || $2 == "t") print $1 }' | sort > "$funcsyms"
+ # Keep all the function symbols not already in the dynamic symbol table
+ comm -13 "$dynsyms" "$funcsyms" > "$keep_symbols"
+ # Copy the full debuginfo, keeping only a minumal set of symbols and removing some unnecessary sections
+ objcopy -S --remove-section .gdb_index --remove-section .comment --keep-symbols="$keep_symbols" "$debuginfo" "$mini_debuginfo" &> /dev/null
+ #Inject the compressed data into the .gnu_debugdata section of the original binary
+ xz "$mini_debuginfo"
+ mini_debuginfo="${mini_debuginfo}.xz"
+ objcopy --add-section .gnu_debugdata="$mini_debuginfo" "$binary"
+ rm -f "$dynsyms" "$funcsyms" "$keep_symbols" "$mini_debuginfo"
+}
+
# Make a relative symlink to $1 called $3$2
shopt -s extglob
link_relative()
@@ -272,6 +304,9 @@ while read nlinks inum f; do
chmod u-w "$f"
fi
+ $include_minidebug && add_minidebug "${debugfn}" "$f"
+
+
if [ -n "$id" ]; then
make_id_link "$id" "$dn/$(basename $f)"
make_id_link "$id" "/usr/lib/debug$dn/$bn" .debug