From 62d27939c2f103654b52a83b17febe968a67ec73 Mon Sep 17 00:00:00 2001
From: Andy Polyakov <appro@openssl.org>
Date: Tue, 1 Feb 2005 23:48:37 +0000
Subject: Address run-time linker problems: LD_PRELOAD issue on multi-ABI
 platforms and SafeDllSearchMode in Windows.

Submitted by: Richard Levitte
---
 util/shlib_wrap.sh | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100755 util/shlib_wrap.sh

(limited to 'util/shlib_wrap.sh')

diff --git a/util/shlib_wrap.sh b/util/shlib_wrap.sh
new file mode 100755
index 0000000000..b3d2a21443
--- /dev/null
+++ b/util/shlib_wrap.sh
@@ -0,0 +1,66 @@
+#!/bin/sh
+
+[ $# -ne 0 ] || set -x		# debug mode without arguments:-)
+
+THERE="`echo $0 | sed -e 's|[^/]*$||' 2>/dev/null`.."
+[ -d "${THERE}" ] || exec "$@"	# should never happen...
+
+# Alternative to this is to parse ${THERE}/Makefile...
+LIBCRYPTOSO="${THERE}/libcrypto.so"
+if [ -f "$LIBCRYPTOSO" ]; then
+    while [ -h "$LIBCRYPTOSO" ]; do
+	LIBCRYPTOSO="${THERE}/`ls -l "$LIBCRYPTOSO" | sed -e 's|.*\-> ||'`"
+    done
+    SOSUFFIX=`echo ${LIBCRYPTOSO} | sed -e 's|.*\.so||' 2>/dev/null`
+    LIBSSLSO="${THERE}/libssl.so${SOSUFFIX}"
+fi
+
+case "`(uname -s) 2>/dev/null`" in
+SunOS|IRIX*)
+	# SunOS and IRIX run-time linkers evaluate alternative
+	# variables depending on target ABI...
+	rld_var=LD_LIBRARY_PATH
+	case "`(/usr/bin/file "$LIBCRYPTOSO") 2>/dev/null`" in
+	*ELF\ 64*SPARC*)
+		[ -n "$LD_LIBRARY_PATH_64" ] && rld_var=LD_LIBRARY_PATH_64
+		;;
+	*ELF\ N32*MIPS*)
+		[ -n "$LD_LIBRARYN32_PATH" ] && rld_var=LD_LIBRARYN32_PATH
+		_RLDN32_LIST="$LIBCRYPTOSO:$LIBSSLSO:DEFAULT"; export _RLDN32_LIST
+		;;
+	*ELF\ 64*MIPS*)
+		[ -n "$LD_LIBRARY64_PATH"  ] && rld_var=LD_LIBRARY64_PATH
+		_RLD64_LIST="$LIBCRYPTOSO:$LIBSSLSO:DEFAULT"; export _RLD64_LIST
+		;;
+	esac
+	eval $rld_var=\"${THERE}:'$'$rld_var\"; export $rld_var
+	unset rld_var
+	;;
+*)	LD_LIBRARY_PATH="${THERE}:$LD_LIBRARY_PATH"	# Linux, ELF HP-UX
+	DYLD_LIBRARY_PATH="${THERE}:$DYLD_LIBRARY_PATH"	# MacOS X
+	SHLIB_PATH="${THERE}:$SHLIB_PATH"		# legacy HP-UX
+	LIBPATH="${THERE}:$LIBPATH"			# AIX, OS/2
+	export LD_LIBRARY_PATH DYLD_LIBRARY_PATH SHLIB_PATH LIBPATH
+	# Even though $PATH is adjusted [for Windows sake], it doesn't
+	# necessarily does the trick. Trouble is that with introduction
+	# of SafeDllSearchMode in XP/2003 it's more appropriate to copy
+	# .DLLs in vicinity of executable, which is done elsewhere...
+	if [ "$OSTYPE" != msdosdjgpp ]; then
+		PATH="${THERE}:$PATH"; export PATH
+	fi
+	;;
+esac
+
+if [ -f "$LIBCRYPTOSO" ]; then
+	# Following three lines are major excuse for isolating them into
+	# this wrapper script. Original reason for setting LD_PRELOAD
+	# was to make it possible to pass 'make test' when user linked
+	# with -rpath pointing to previous version installation. Wrapping
+	# it into a script makes it possible to do so on multi-ABI
+	# platforms.
+	LD_PRELOAD="$LIBCRYPTOSO $LIBSSLSO"	    # SunOS, Linux, ELF HP-UX
+	_RLD_LIST="$LIBCRYPTOSO:$LIBSSLSO:DEFAULT"  # Tru64, o32 IRIX
+	export LD_PRELOAD _RLD_LIST
+fi
+
+exec "$@"
-- 
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