Add Rust language

rust/rust-package.mk

@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2023 Luca Barbato and Donald Hoskins
+
+# Variables (all optional) to be set in package Makefiles:
+#
+# RUST_PKG_FEATURES - list of options, default empty
+#
+#   Space or comma separated list of features to activate
+#
+#   e.g. RUST_PKG_FEATURES:=enable-foo,with-bar
+
+ifeq ($(origin RUST_INCLUDE_DIR),undefined)
+  RUST_INCLUDE_DIR:=$(dir $(lastword $(MAKEFILE_LIST)))
+endif
+include $(RUST_INCLUDE_DIR)/rust-values.mk
+
+# Support only a subset for now.
+RUST_ARCH_DEPENDS:=@(aarch64||arm||i386||i686||mips||mipsel||mips64||mips64el||mipsel||powerpc64||riscv64||x86_64)
+
+# $(1) path to the package (optional)
+# $(2) additional arguments to cargo (optional)
+define Build/Compile/Cargo
+	( \
+		cd $(PKG_BUILD_DIR) ; \
+		export PATH="$(CARGO_HOME)/bin:$(PATH)" ; \
+		CARGO_HOME=$(CARGO_HOME) \
+		TARGET_CFLAGS="$(TARGET_CFLAGS) $(RUST_CFLAGS)" \
+		TARGET_CC=$(TARGET_CC_NOCACHE) \
+		CC=$(HOSTCC_NOCACHE) \
+		$(CARGO_VARS) \
+		cargo install -v \
+			--profile stripped \
+			--target $(RUSTC_TARGET_ARCH) \
+			$(if $(strip $(RUST_PKG_FEATURES)),--features "$(strip $(RUST_PKG_FEATURES))") \
+			--root $(PKG_INSTALL_DIR) \
+			--path "$(if $(strip $(1)),$(strip $(1)),.)" \
+			$(2) ; \
+	)
+endef
+
+define RustBinPackage
+  ifndef Package/$(1)/install
+    define Package/$(1)/install
+	$$(INSTALL_DIR) $$(1)/usr/bin/
+	$$(INSTALL_BIN) $$(PKG_INSTALL_DIR)/bin/* $$(1)/usr/bin/
+    endef
+  endif
+endef
+
+Build/Compile=$(call Build/Compile/Cargo)