# Makefile for pi calculation via polygon perimeter

GNUPLOT   = gnuplot
PDFVIEWER = evince
INDENT    = astyle --style=allman --add-brackets

CC        = clang
LDFLAGS   = -O3
ifeq ($(CC),clang)
  CFLAGS  = -Weverything -Wextra -pedantic $(LDFLAGS)
else
  CFLAGS  = -Wall -Wextra -pedantic $(LDFLAGS)
endif
LDLIBS    = -lm

.SUFFIXES:
.SUFFIXES:  .c .o .gp .pdf

.PHONY: clean veryclean

sources   = pi-poly-u.c

%.res: %.c
	$(CC) $(CFLAGS) $< -o $* $(LDLIBS)
	./$* > $*.res
	rm -f ./$*

## help        : Default action is to show what commands are available.
help: Makefile
	@sed -n 's/^##//p' $<

## pdf         : Compile and run the code and generate the pdf graph
pdf: pi-poly-u.res
	$(GNUPLOT) pi-poly-u.gp

## indent      : Indent the source code
indent:
	$(INDENT) $(sources)

## clean       : Remove the auto-generated files
clean: 
	rm -f *.*~
	rm -f *.o
	rm -f *.c.orig

## veryclean   : Remove the auto-generated files, the tests results, and the pdf
veryclean : clean
	rm -f pi-poly-u.res pi-poly-u.pdf pi-poly