SHELL = /bin/bash

dstdir := $(CURDIR)
srcdir := $(CURDIR)/build

sources := $(wildcard \
	$(srcdir)/*_asm.go \
	$(srcdir)/*/*_asm.go \
)

targets := \
	$(patsubst $(srcdir)/%_asm.go,$(dstdir)/%_amd64.s,$(sources)) \
	$(patsubst $(srcdir)/%_asm.go,$(dstdir)/%_amd64.go,$(sources))

internal := $(wildcard $(srcdir)/internal/*/*.go)

build: $(targets)

count ?= 5
bench ?= .
pkg ?= ...
benchcmp:
	go test -v -run _ -count $(count) -bench $(bench) ./$(pkg) -tags purego > /tmp/bench-$(subst .,dot,$(pkg))-purego.txt
	go test -v -run _ -count $(count) -bench $(bench) ./$(pkg)              > /tmp/bench-$(subst .,dot,$(pkg))-asm.txt
	benchstat /tmp/bench-$(subst .,dot,$(pkg))-{purego,asm}.txt

$(dstdir)/%_amd64.s $(dstdir)/%_amd64.go: $(srcdir)/%_asm.go $(internal)
	cd build && go run $(patsubst $(CURDIR)/build/%,%,$<) \
		-pkg   $(notdir $(realpath $(dir $<))) \
		-out   ../$(patsubst $(CURDIR)/%,%,$(patsubst $(srcdir)/%_asm.go,$(dstdir)/%_amd64.s,$<)) \
		-stubs ../$(patsubst $(CURDIR)/%,%,$(patsubst $(srcdir)/%_asm.go,$(dstdir)/%_amd64.go,$<))
	go fmt $(dstdir)/$(*)_amd64.go

.PHONY: build benchmp