From 0e154cc75941102e8324daee4b55f4826af2c0a9 Mon Sep 17 00:00:00 2001
From: John Reiser <jreiser@BitWagon.com>
Date: Sat, 25 Mar 2017 20:22:04 -0700
Subject: [PATCH] Hint when need DT_INIT for shared library

https://github.com/upx/upx/issues/74
	modified:   p_lx_elf.cpp
---
 src/p_lx_elf.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/p_lx_elf.cpp b/src/p_lx_elf.cpp
index 97a4c2bb..5e870250 100644
--- a/src/p_lx_elf.cpp
+++ b/src/p_lx_elf.cpp
@@ -1600,7 +1600,7 @@ bool PackLinuxElf32::canPack()
             goto proceed;  // But proper packing depends on checking xct_va.
         }
         else
-            infoWarning("no DT_INIT or JNI_OnLoad: %s", fi->getName());
+            throwCantPack("need DT_INIT; try \"void _init(void){}\"");
 abandon:
         return false;
 proceed: ;
@@ -1792,6 +1792,8 @@ PackLinuxElf64ppcle::canPack()
             xct_off = elf_get_offset_from_address(xct_va);
             goto proceed;  // But proper packing depends on checking xct_va.
         }
+        else
+            throwCantPack("need DT_INIT; try \"void _init(void){}\"");
 abandon:
         return false;
 proceed: ;
@@ -1984,6 +1986,8 @@ PackLinuxElf64amd::canPack()
             xct_off = elf_get_offset_from_address(xct_va);
             goto proceed;  // But proper packing depends on checking xct_va.
         }
+        else
+            throwCantPack("need DT_INIT; try \"void _init(void){}\"");
 abandon:
         return false;
 proceed: ;