make autogenerated functions to be 'static inline' instead of 'inline'

This fixes link issue and compile warning, for more details about this
issue look at
https://bitbucket.org/mjsousa/matiec/issues/53/c-compiler-warning-if-iec-function-is-used

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