all: mu_bin core.mu

CXX ?= c++
CFLAGS ?= -g -O3

mu_bin: makefile mu.cc termbox/libtermbox.a
	${CXX} ${CFLAGS} -Wall -Wextra -fno-strict-aliasing mu.cc termbox/libtermbox.a -o mu_bin

# To see what the program looks like after all layers have been applied, read
# mu.cc
mu.cc: [0-9]*.cc enumerate/enumerate tangle/tangle
	./tangle/tangle $$(./enumerate/enumerate --until zzz |grep -v '.mu$$') > mu.cc
	make --no-print-directory autogenerated_lists

core.mu: [0-9]*.mu mu.cc
	cat $$(./enumerate/enumerate --until zzz |grep '.mu$$') > core.mu

enumerate/enumerate:
	cd enumerate && make

tangle/tangle:
	cd tangle && make && ./tangle test

termbox/libtermbox.a: termbox/*.c termbox/*.h termbox/*.inl
	cd termbox && make

# auto-generated files; by convention they end in '_list'.
autogenerated_lists: mu.cc function_list test_list

# autogenerated list of function declarations, so I can define them in any order
function_list: mu.cc
	@# functions start out unindented, have all args on the same line, and end in ') {'
	@#                                      ignore methods
	@grep -h "^[^[:space:]#].*) {$$" mu.cc |grep -v ":.*(" |perl -pwe 's/ {.*/;/' > function_list
	@# occasionally we need to modify a declaration in a later layer without messing with ugly unbalanced brackets
	@# assume such functions move the '{' to column 0 of the very next line
	@grep -v "^#line" mu.cc |grep -B1 "^{" |grep -v "^{" |perl -pwe 's/$$/;/' >> function_list
	@# test functions
	@grep -h "^\s*TEST(" mu.cc |perl -pwe 's/^\s*TEST\((.*)\)$$/void test_$$1();/' >> function_list

# autogenerated list of tests to run
test_list: mu.cc
	@grep -h "^\s*void test_" mu.cc |perl -pwe 's/^\s*void (.*)\(\) {.*/$$1,/' > test_list
	@grep -h "^\s*TEST(" mu.cc |perl -pwe 's/^\s*TEST\((.*)\)$$/test_$$1,/' >> test_list

#
.PHONY: all autogenerated_lists clean clena

test: autogenerated_lists mu_bin core.mu
	./mu_bin test

clena: clean
clean:
	cd enumerate && make clean
	cd tangle && make clean
	cd termbox && make clean
	-rm mu.cc core.mu mu_bin *_list
	-rm -rf mu_bin.*