SHELL := /usr/bin/env bash -euo pipefail

# MORE_DEPS: rebuild the stdlib whenever the compiler has changed
LEANMAKE_OPTS+=\
	OUT="${LIB}"\
	LIB_OUT="${LIB}/lean"\
	OLEAN_OUT="${LIB}/lean"\
	LEANC_OPTS="${LEANC_OPTS}"\
	MORE_DEPS="${LEAN_BIN}/lean${CMAKE_EXECUTABLE_SUFFIX}"\
	CMAKE_LIKE_OUTPUT=1

stdlib:
ifeq ($(patsubst %.5,.5,${STAGE}), .5)
# In the case of stage n.5, we simply copy .olean files and libInit.a from stage n (but not libleancpp.a,
# which is different from stage 0).
	mkdir -p "${LIB}/lean"
	cp -rf $$(find "${PREV_STAGE}/lib/lean" -mindepth 1 -maxdepth 1 -not -name libleancpp.a) "${LIB}/lean"
else
# Use `+` to use the Make jobserver with `leanmake` for parallelized builds
	+"${LEAN_BIN}/leanmake" lib PKG=Init $(LEANMAKE_OPTS)
	+"${LEAN_BIN}/leanmake" lib PKG=Std $(LEANMAKE_OPTS)
	+"${LEAN_BIN}/leanmake" lib PKG=Lean $(LEANMAKE_OPTS)
endif