8aad99ffae
This seems to have intended to allow overrides but the specific Makefile syntax used didn't actually allow overrides, so update that to allow env vars from the outside world to override the variable (needed locally on AArch64 I'm building on which has a different path to libgmp)
39 lines
1.4 KiB
Makefile
39 lines
1.4 KiB
Makefile
# Build a library allowing FFI access to the Wasm spec interpreter.
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OCAML_FLAGS := -g -keep-locs -runtime-variant _pic
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# By default, we build in a sub-directory but we can override this with `make
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# BUILD_DIR=...`.
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BUILD_DIR := _build
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# Currently the WebAssembly spec interpreter is buried in a Git submodule as is
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# its build directory, `_build`. Cargo may not like that files are changing
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# outside of `target` (TODO).
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SPEC_DIR := spec/interpreter
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SPEC_BUILD_DIR := $(SPEC_DIR)/_build
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SPEC_LIB := $(SPEC_BUILD_DIR)/wasm.cmxa
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# A space-separated list of paths that the linker will use to search for libgmp.
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# Override with `make LIBGMP_PATHS=...`.
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LIBGMP_PATHS ?= /usr/lib /usr/lib/x86_64-linux-gnu
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PKGS = zarith
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# Build and package the static library, `libinterpret.a`.
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$(BUILD_DIR)/libinterpret.a: $(BUILD_DIR)/interpret.lib.o
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ar qs $@ $^
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$(BUILD_DIR)/interpret.lib.o: $(SPEC_LIB) $(BUILD_DIR)/interpret.cmx
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ocamlfind ocamlopt $(OCAML_FLAGS) -I $(SPEC_BUILD_DIR) -o $@ -output-complete-obj $^ -linkpkg $(PKGS:%=-package %) -cclib "$(LIBGMP_PATHS:%=-L%)"
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$(BUILD_DIR)/interpret.cmx: interpret.ml $(SPEC_BUILD_DIR) $(BUILD_DIR)
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ocamlfind ocamlopt $(OCAML_FLAGS) -I $(SPEC_BUILD_DIR) -o $@ -c -impl $< -linkpkg $(PKGS:%=-package %)
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$(BUILD_DIR):
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mkdir -p $@
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# We also need to be able to build the spec's `wasm.cmxa`.
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$(SPEC_LIB):
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make -C $(SPEC_DIR) libopt
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clean:
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rm -rf $(BUILD_DIR)
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make -C $(SPEC_DIR) clean
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