lix/nix-rust/local.mk
Alyssa Ross 4f80464645
Apply OS checks to host platform, not build
Previously, the build system used uname(1) output when it wanted to
check the operating system it was being built for, which meant that it
didn't take into-account cross-compilation when the build and host
operating systems were different.

To fix this, instead of consulting uname output, we consult the host
triple, specifically the third "kernel" part.

For "kernel"s with stable ABIs, like Linux or Cygwin, we can use a
simple ifeq to test whether we're compiling for that system, but for
other platforms, like Darwin, FreeBSD, or Solaris, we have to use a
more complicated check to take into account the version numbers at the
end of the "kernel"s.  I couldn't find a way to just strip these
version numbers in GNU Make without shelling out, which would be even
more ugly IMO.  Because these checks differ between kernels, and the
patsubst ones are quite fiddly, I've added variables for each host OS
we might want to check to make them easier to reuse.
2021-06-23 15:00:36 +00:00

48 lines
1.4 KiB
Makefile

ifeq ($(OPTIMIZE), 1)
RUST_MODE = --release
RUST_DIR = release
else
RUST_MODE =
RUST_DIR = debug
endif
libnixrust_PATH := $(d)/target/$(RUST_DIR)/libnixrust.$(SO_EXT)
libnixrust_INSTALL_PATH := $(libdir)/libnixrust.$(SO_EXT)
libnixrust_LDFLAGS_USE := -L$(d)/target/$(RUST_DIR) -lnixrust
libnixrust_LDFLAGS_USE_INSTALLED := -L$(libdir) -lnixrust
ifdef HOST_LINUX
libnixrust_LDFLAGS_USE += -ldl
libnixrust_LDFLAGS_USE_INSTALLED += -ldl
endif
ifdef HOST_DARWIN
libnixrust_BUILD_FLAGS = NIX_LDFLAGS="-undefined dynamic_lookup"
else
libnixrust_LDFLAGS_USE += -Wl,-rpath,$(abspath $(d)/target/$(RUST_DIR))
libnixrust_LDFLAGS_USE_INSTALLED += -Wl,-rpath,$(libdir)
endif
$(libnixrust_PATH): $(call rwildcard, $(d)/src, *.rs) $(d)/Cargo.toml
$(trace-gen) cd nix-rust && CARGO_HOME=$$(if [[ -d vendor ]]; then echo vendor; fi) \
$(libnixrust_BUILD_FLAGS) \
cargo build $(RUST_MODE) $$(if [[ -d vendor ]]; then echo --offline; fi) \
&& touch target/$(RUST_DIR)/libnixrust.$(SO_EXT)
$(libnixrust_INSTALL_PATH): $(libnixrust_PATH)
$(target-gen) cp $^ $@
ifdef HOST_DARWIN
install_name_tool -id $@ $@
endif
clean: clean-rust
clean-rust:
$(suppress) rm -rfv nix-rust/target
ifndef HOST_DARWIN
check: rust-tests
rust-tests:
$(trace-test) cd nix-rust && CARGO_HOME=$$(if [[ -d vendor ]]; then echo vendor; fi) cargo test --release $$(if [[ -d vendor ]]; then echo --offline; fi)
endif