for option '-Op' (generate <pouname>.h/c): add '#include <pouname>.h' to the .c file, and '#ifdef <pouname>_H' to the .h file
include ../../common.mk
lib_LIBRARIES = libstage4_iec.a
libstage4_iec_a_SOURCES = generate_iec.cc
libstage4_iec_a_LIBADD = ../stage4.o
libstage4_iec_a_CPPFLAGS = -I../../../absyntax