[patch] Patch to relocate prebuilt binaries by overriding interpreter path

0001-eclass-prefix-exprefixify-relocate-executables.patch (text/plain), 1.60 KB, created by Alexei Colin on 2021-02-03 19:57:10 UTC

From 6f4d5afce23eb2f747f62e82d47489e74163cf7d Mon Sep 17 00:00:00 2001
From: Alexei Colin <[e-mail]>
Date: Wed, 3 Feb 2021 14:35:34 -0500
Subject: [PATCH 1/2] eclass/prefix: exprefixify: relocate executables

A function for relocating executables by replacing the
path to program interpreter (dynamic loader).

Signed-off-by: Alexei Colin <[e-mail]>
---
 eclass/prefix.eclass | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/eclass/prefix.eclass b/eclass/prefix.eclass
index d00c0d7..5e89cfc 100644
--- a/eclass/prefix.eclass
+++ b/eclass/prefix.eclass
@@ -135,4 +135,26 @@ prefixify_ro() {
 		die "$1 does not exist"
 	fi
 }
+
+# @FUNCTION: exprefixify
+# @USAGE: <directory>
+# @DESCRIPTION:
+# For each ELF executable in given directory replaces the path to
+# program interpreter (i.e. the dynamic loader, for example
+# '/lib64/ld-linux-x86-64.so.2') with the path where the prefix is
+# appended the original path.
+# NOTE: ebuilds that call this must add dev-util/patchelf to DEPENDS
+exprefixify() {
+	local dir="$1"
+	einfo "Prefixifying executables in ${dir}..."
+	type -P patchelf 1>/dev/null || die "patchelf not found (add dev-util/patchelf to DEPENDS)"
+
+	# The first -exec is to filter out non-ELF executables
+	find "${dir}" \
+		\( -type f -or -type l \) -executable \
+		-not \( -name '*.la' -or -name '*.a' -or -name '*.so.*' -or -name '*.so' \) \
+		-exec sh -c 'patchelf --print-interpreter {} 1>/dev/null 2>/dev/null' \; \
+		-exec sh -c 'patchelf --set-interpreter ${EPREFIX}/$(patchelf --print-interpreter {}) {}' \; \
+	       || die
+}
 # vim: tw=72:
-- 
1.8.3.1