init

kernel/GNUmakefile

@@ -0,0 +1,44 @@
+# Nuke built-in rules and variables.
+MAKEFLAGS += -rR
+.SUFFIXES:
+
+# This is the name that our final executable will have.
+# Change as needed.
+override OUTPUT := kernel
+
+# Convenience macro to reliably declare user overridable variables.
+override USER_VARIABLE = $(if $(filter $(origin $(1)),default undefined),$(eval override $(1) := $(2)))
+
+# Target architecture to build for. Default to x86_64.
+$(call USER_VARIABLE,KARCH,x86_64)
+
+ifeq ($(RUST_TARGET),)
+    override RUST_TARGET := $(KARCH)-unknown-none
+	ifeq ($(KARCH),riscv64)
+    	override RUST_TARGET := riscv64gc-unknown-none-elf
+	endif
+endif
+
+ifeq ($(RUST_PROFILE),)
+    override RUST_PROFILE := dev
+endif
+
+override RUST_PROFILE_SUBDIR := $(RUST_PROFILE)
+ifeq ($(RUST_PROFILE),dev)
+    override RUST_PROFILE_SUBDIR := debug
+endif
+
+# Default target.
+.PHONY: all
+all:
+	RUSTFLAGS="-C relocation-model=static" cargo build --target $(RUST_TARGET) --profile $(RUST_PROFILE)
+	cp target/$(RUST_TARGET)/$(RUST_PROFILE_SUBDIR)/$$(cd target/$(RUST_TARGET)/$(RUST_PROFILE_SUBDIR) && find -maxdepth 1 -perm -111 -type f) kernel
+
+# Remove object files and the final executable.
+.PHONY: clean
+clean:
+	cargo clean
+	rm -rf kernel
+
+.PHONY: distclean
+distclean: clean