From dd282500993041e6f2ab758b303f16b70fc30387 Mon Sep 17 00:00:00 2001
From: outofmemo <oufme@outlook.com>
Date: Wed, 5 Oct 2022 10:46:42 +0800
Subject: [PATCH] packelf.sh

---
 README.md  | 20 ++++++++++++++++++++
 packelf.sh | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 README.md
 create mode 100755 packelf.sh

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..f5a9e57
--- /dev/null
+++ b/README.md
@@ -0,0 +1,20 @@
+`packelf` was inspired by [the idea of Klaus D](https://askubuntu.com/a/546305). It is used to package the elf executable and its dependent libraries into a single executable.
+
+
+
+## usage
+
+```
+packelf.sh <ELF_SRC_PATH> <DST_PATH> [ADDITIONAL_LIBS ...]
+```
+
+
+
+## example
+
+```
+~ # packelf.sh `which perf` /root/perf
+~ # /root/perf --version
+perf version 3.10.0-1160.49.1.el7.x86_64.debug
+```
+
diff --git a/packelf.sh b/packelf.sh
new file mode 100755
index 0000000..b82a6b3
--- /dev/null
+++ b/packelf.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+set -eo pipefail
+
+[ $# -lt 2 ] && {
+    echo "usage: $0 <ELF_SRC_PATH> <DST_PATH> [ADDITIONAL_LIBS ...]"
+    exit 1
+}
+
+src="$1"
+dst="$2"
+shift
+shift
+
+cat >"$dst" <<EOF
+#!/bin/bash
+tmp_dir="\$(mktemp -d)"
+check_path="\$tmp_dir/__check_permission__"
+trap 'rm -rf \$tmp_dir' 0 1 2 3 6
+if ! (touch "\$check_path" && chmod +x "\$check_path" && [ -x "\$check_path" ]); then
+    rm -rf "\$tmp_dir"
+    tmp_dir="\$(TMPDIR="\$(pwd)" mktemp -d)"
+fi
+sed '1,/^#__END__$/d' "\$0" | tar -xz -C "\$tmp_dir"
+"\$tmp_dir/LD_SO" --library-path "\$tmp_dir" "\$tmp_dir/PROGRAM" "\$@"
+exit \$?
+#__END__
+EOF
+
+libs="$(ldd "$src" | grep -F '/' | sed -E 's|[^/]*/([^ ]+).*?|/\1|')"
+ld_so="$(echo "$libs" | grep -F '/ld-linux-')"
+sed -E -i -e 's|PROGRAM|'"$(basename "$src")"'|' -e 's|LD_SO|'"$(basename "$ld_so")"'|' "$dst"
+tar -czh --transform 's/.*\///g' "$src" $libs >>"$dst" "$@" 2> >(grep -v 'Removing leading' >&2)
+chmod +x "$dst"