Address run-time linker problems: LD_PRELOAD issue on multi-ABI platforms
and SafeDllSearchMode in Windows.
Submitted by: Richard Levitte
diff --git a/util/shlib_wrap.sh b/util/shlib_wrap.sh
new file mode 100755
index 0000000..b3d2a21
--- /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:$LIBSSLSO:DEFAULT" # Tru64, o32 IRIX
+ export LD_PRELOAD _RLD_LIST
+fi
+
+exec "$@"
