shlib_wrap commentary update.

diff --git a/util/shlib_wrap.sh b/util/shlib_wrap.sh
index cbec5f040cceeda71b608f5669ce4605c00d76b5..a2f62d696fac44aaaac1647645db304845dc8aed 100755 (executable)
--- a/util/shlib_wrap.sh
+++ b/util/shlib_wrap.sh
@@ -27,6 +27,12 @@ SunOS|IRIX*)
                LD_PRELOAD_64="$LIBCRYPTOSO $LIBSSLSO"; export LD_PRELOAD_64
                preload_var=LD_PRELOAD_64
                ;;
+       # Why are newly built .so's preloaded anyway? Because run-time
+       # .so lookup path embedded into application takes precedence
+       # over LD_LIBRARY_PATH and as result application ends up linking
+       # to previously installed .so's. On IRIX instead of preloading
+       # newly built .so's we trick run-time linker to fail to find
+       # the installed .so by setting _RLD_ROOT variable.
        *ELF\ 32*MIPS*)
                #_RLD_LIST="$LIBCRYPTOSO:$LIBSSLSO:DEFAULT"; export _RLD_LIST
                _RLD_ROOT=/no/such/dir; export _RLD_ROOT