configure: error if explicitly enabled clear-memory is not supported

This takes 22bd8d81d8fab956085e2079bf8c29872455ce59 and
b8289b625e291bbb785ed4add31f4759241067f3 into account,
but still makes it enabled by default if it is supported
and error out in case it is unsupported and was requested.
This commit is contained in:
Marc Hoersken 2015-03-25 22:42:27 +01:00
parent b8289b625e
commit e160ba448e

View File

@ -207,7 +207,11 @@ if test "$CLEAR_MEMORY" != "no"; then
AC_DEFINE(LIBSSH2_CLEAR_MEMORY, 1, [Enable clearing of memory before being freed])
enable_clear_memory=yes
else
AC_MSG_WARN([secure clearing/zeroing of memory is not supported by the selected crypto backend])
if test "$CLEAR_MEMORY" = "yes"; then
AC_MSG_ERROR([secure clearing/zeroing of memory is not supported by the selected crypto backend])
else
AC_MSG_WARN([secure clearing/zeroing of memory is not supported by the selected crypto backend])
fi
enable_clear_memory=unsupported
fi
else