CC = gcc
CYTHON = ../../bin/cython
CYTHON_FREEZE = ../../bin/cython_freeze
PYTHON = python
RST2HTML = rst2html

PY_LDFLAGS = $(shell $(PYTHON) -c 'from distutils.sysconfig import get_config_var as g; import sys; sys.stdout.write(" ".join([g("LINKFORSHARED"), "-L"+g("LIBPL")]) + "\n")')
PY_CPPFLAGS = $(shell $(PYTHON) -c 'from distutils.sysconfig import *; import sys; sys.stdout.write("-I"+get_python_inc() + "\n")')
LIBDIR1 := $(shell $(PYTHON) -c "from distutils import sysconfig; print(sysconfig.get_config_var('LIBDIR'))")
LIBDIR2 := $(shell $(PYTHON) -c "from distutils import sysconfig; print(sysconfig.get_config_var('LIBPL'))")
PYLIB := $(shell $(PYTHON) -c "from distutils import sysconfig; print(sysconfig.get_config_var('LIBRARY')[3:-2])")
LIBS := $(shell $(PYTHON) -c "import distutils.sysconfig; print(distutils.sysconfig.get_config_var('LIBS'))")

CFLAGS = -fPIC -fno-strict-aliasing -g -O2 -Wall -Wextra
CPPFLAGS = $(PY_CPPFLAGS)
LDFLAGS = $(PY_LDFLAGS)
LDLIBS = -L$(LIBDIR1) -L$(LIBDIR2) -l$(PYLIB)



# Name of executable
TARGETS = nCr python

# List of Cython source files, with main module first.
CYTHON_SOURCE = combinatorics.pyx lcmath.pyx
CYTHON_SECONDARY = $(CYTHON_SOURCE:.pyx=.c) $(TARGETS:=.c)


all : $(TARGETS)
html : README.html

$(TARGETS) : % : %.o $(CYTHON_SOURCE:.pyx=.o)

nCr.c :
	$(CYTHON_FREEZE) $(CYTHON_SOURCE:.pyx=) > $@

python.c :
	$(CYTHON_FREEZE) --pymain $(CYTHON_SOURCE:.pyx=) > $@

%.c : %.pyx
	$(CYTHON) $(CYTHONFLAGS) $^

%.html : %.txt
	$(RST2HTML) $^ $@

clean:
	$(RM) *.o $(CYTHON_SECONDARY) $(TARGETS) README.html

.PHONY: clean
.SECONDARY: $(CYTHON_SECONDARY)