Custom commands with outputs used in multiple targets are prone to
being executed multiple times in parallel builds (and the repeated
overwrites of the outputs may lead to various hard-to-debug
errors). The fix is to add a custom target that depends on the
custom command and make the existing targets using the outputs
depend on the new custom target.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss [email protected]