ifeq "$$($1_$2_INSTALL_INPLACE)" "NO"
ifeq "$(findstring clean,$(MAKECMDGOALS))" ""
$1_$2_INPLACE = $$(error $1_$2 should not be installed inplace, but INPLACE var evaluated)
ifeq "$$($1_$2_INSTALL_INPLACE)" "NO"
ifeq "$(findstring clean,$(MAKECMDGOALS))" ""
$1_$2_INPLACE = $$(error $1_$2 should not be installed inplace, but INPLACE var evaluated)