Makefile for converting C header files with GCC extensions into CFFI binding using SWIG

Makefile

.PHONY:	all clean
# .PRECIOUS: %.i1 %.i2 %.i3

LD	= -I/usr/include -I/usr/include/linux

headers = $(shell ls *.h)
$(info $(headers))

lisp = $(patsubst %.h,%.lisp,$(headers))

all: $(lisp) shared.lisp

%.i1: %.h Makefile
	cpp -std=c99 -undef $< > $@

%.i2: %.i1 Makefile	
	awk '/^# [0-9]+ ".*"/{FILE=$$3} /^[^#].*/{if(FILE=="\"$*.h\""){print $$0}else{printf "//%s ignored\n",FILE}}' $< > $@

shared.lisp: shared.swig
	swig -cffi $(LD) -importall -module shared $<

%.i3: %.i2 shared.swig Makefile
	cat shared.swig $< > $@

%.lisp: %.i3 Makefile
	swig -cffi $(LD) -includeall -noswig-lisp -module $* $<

# swig -cffi $(LD) -importall -noswig-lisp -module $* $<

# -importall      - Follow all #include statements as imports
# -includeall     - Follow all #include statements

clean:
	git clean -xf