makefile: export common env for child process

Signed-off-by: Tianhao Wang <[email protected]>

Author: shrik3

makefile

@@ -1,13 +1,14 @@
 #
-# OUTPUT PATHS
+# variables shared by all child make process
 #
-PREFIX          ?= /usr/local
-QBIN_DIR        ?= $(PREFIX)/bin
-QCONFIG_DIR     ?= /etc/quark
-QLOG_DIR        ?= /var/log/quark
-
+export PREFIX          ?= /usr/local
+export QBIN_DIR        ?= $(PREFIX)/bin
+export QCONFIG_DIR     ?= /etc/quark
+export QLOG_DIR        ?= /var/log/quark
+export ARCH            ?= ${shell uname -m}
+export RUST_TOOLCHAIN  = nightly-2023-12-11-$(ARCH)-unknown-linux-gnu
 #
-# BUILD PATHS
+# BUILD PATHS, used by this make process only
 #
 QKERNEL_BUILD   = build
 QTARGET_RELEASE = target/release
@@ -18,10 +19,6 @@ QUARK_DEBUG     = $(QTARGET_DEBUG)/quark
 QUARK_RELEASE   = $(QTARGET_RELEASE)/quark
 VDSO            = vdso/vdso.so
 
-ARCH := ${shell uname -m}
-RUST_TOOLCHAIN  = nightly-2023-12-11-$(ARCH)-unknown-linux-gnu
-
-
 .PHONY: all release debug clean install qvisor_release qvisor_debug cuda_make cuda_all cleanall
 
 all:: release debug
@@ -33,16 +30,16 @@ release:: qvisor_release qkernel_release $(VDSO)
 debug:: qvisor_debug qkernel_debug $(VDSO)
 
 qvisor_release:
-	make -C ./qvisor TOOLCHAIN=$(RUST_TOOLCHAIN) release
+	make -C ./qvisor release
 
 qkernel_release:
-	make -C ./qkernel TOOLCHAIN=$(RUST_TOOLCHAIN) release
+	make -C ./qkernel release
 
 qvisor_debug:
-	make -C ./qvisor TOOLCHAIN=$(RUST_TOOLCHAIN) debug
+	make -C ./qvisor debug
 
 qkernel_debug:
-	make -C ./qkernel TOOLCHAIN=$(RUST_TOOLCHAIN) debug
+	make -C ./qkernel debug
 
 $(VDSO):
 	make -C ./vdso
@@ -65,10 +62,10 @@ cuda_release:: qvisor_cuda_release qkernel_release cuda_make
 cuda_debug:: qvisor_cuda_debug qkernel_debug cuda_make
 
 qvisor_cuda_release:
-	make -C ./qvisor TOOLCHAIN=$(RUST_TOOLCHAIN) cuda_release
+	make -C ./qvisor cuda_release
 
 qvisor_cuda_debug:
-	make -C ./qvisor TOOLCHAIN=$(RUST_TOOLCHAIN) cuda_debug
+	make -C ./qvisor cuda_debug
 
 install:
 	-sudo cp -f $(QKERNEL_RELEASE) $(QBIN_DIR)/

qkernel/makefile

@@ -25,10 +25,10 @@ $(kernel_debug): kernel_debug $(assembly_object_files)
 		$(assembly_object_files) $(qkernel_debug)
 
 kernel:
-	CARGO_TARGET_DIR=../target cargo +$(TOOLCHAIN) xbuild --target $(arch)-qkernel.json --release
+	CARGO_TARGET_DIR=../target cargo +$(RUST_TOOLCHAIN) xbuild --target $(arch)-qkernel.json --release
 
 kernel_debug:
-	CARGO_TARGET_DIR=../target cargo +$(TOOLCHAIN) xbuild --target $(arch)-qkernel.json
+	CARGO_TARGET_DIR=../target cargo +$(RUST_TOOLCHAIN) xbuild --target $(arch)-qkernel.json
 
 ../build/arch/$(arch)/%.o: src/qlib/kernel/arch/$(arch)/%.s
 	@mkdir -p $(shell dirname $@)

qvisor/makefile

@@ -1,13 +1,13 @@
 .PHONY: debug release cuda_debug cuda_release
 
 debug:
-	CARGO_TARGET_DIR=../target cargo +$(TOOLCHAIN) build
+	CARGO_TARGET_DIR=../target cargo +$(RUST_TOOLCHAIN) build
 
 release:
-	CARGO_TARGET_DIR=../target cargo +$(TOOLCHAIN) build --release
+	CARGO_TARGET_DIR=../target cargo +$(RUST_TOOLCHAIN) build --release
 
 cuda_debug:
-	CARGO_TARGET_DIR=../target cargo +$(TOOLCHAIN) build --features cuda
+	CARGO_TARGET_DIR=../target cargo +$(RUST_TOOLCHAIN) build --features cuda
 
 cuda_release:
-	CARGO_TARGET_DIR=../target cargo +$(TOOLCHAIN) build --release --features cuda
+	CARGO_TARGET_DIR=../target cargo +$(RUST_TOOLCHAIN) build --release --features cuda