wip 80k example

examples/lang_c/Makefile

@@ -1,7 +1,47 @@
 CC := gcc
+CARGO := rustup run nightly cargo
 
 THIS_DIR := $(dir $(realpath $(lastword $(MAKEFILE_LIST))))
 REPO_ROOT := $(THIS_DIR)/../../
+RUST_TARGET_DIR := $(REPO_ROOT)/target/x86_64-unknown-linux-musl/size-optimized
+
+RUSTFLAGS := -Zlocation-detail=none \
+	-Zfmt-debug=none \
+	-C linker=musl-gcc \
+	-C link-arg=-s \
+	-C link-arg=--gc-sections \
+	-C link-arg=-z,norelro \
+	-C link-arg=--hash-style=gnu \
+	--crate-type=staticlib \
+	-C panic=abort
+
+CARGOFLAGS := --manifest-path=$(REPO_ROOT)/Cargo.toml \
+	--profile=size-optimized \
+	--no-default-features \
+	--target=x86_64-unknown-linux-musl \
+	-Zbuild-std="core,std,alloc,proc_macro,panic_abort" \
+	-Zbuild-std-features="panic_immediate_abort" \
+
+CCFLAGS := -static -Os \
+	-ffunction-sections -fdata-sections \
+	-fwrapv -fomit-frame-pointer -fno-stack-protector\
+	-fwhole-program \
+	-nodefaultlibs -lservicepoint_binding_c -lc \
+	-Wl,--gc-sections \
+	-fno-unroll-loops \
+	-fno-unwind-tables -fno-asynchronous-unwind-tables \
+	-fmerge-all-constants \
+	-Wl,-z,norelro \
+	-Wl,--hash-style=gnu \
+	-fvisibility=hidden \
+	-Bsymbolic \
+	-Wl,--exclude-libs,ALL \
+	-fno-ident \
+	#-fuse-ld=gold \
+	-fno-exceptions
+	#-Wl,--icf=all \
+
+export SERVICEPOINT_HEADER_OUT := $(THIS_DIR)/include
 
 build: out/lang_c
 
@@ -15,20 +55,19 @@ run: out/lang_c
 
 PHONY: build clean dependencies run
 
-out/lang_c: dependencies src/main.c
+out/lang_c_unstripped: dependencies src/main.c
 	mkdir -p out || true
 	${CC} src/main.c \
-		-I include \
-		-L $(REPO_ROOT)/target/release \
-		-Wl,-Bstatic -lservicepoint_binding_c \
-		-Wl,-Bdynamic -llzma \
-		-o out/lang_c
+		-I $(SERVICEPOINT_HEADER_OUT) \
+		-L $(RUST_TARGET_DIR)\
+		$(CCFLAGS) \
+		-o out/lang_c_unstripped
+out/lang_c: out/lang_c_unstripped
+	strip -s -R .comment -R .gnu.version --strip-unneeded out/lang_c_unstripped -o out/lang_c
+#strip -S --strip-unneeded --remove-section=.note.gnu.gold-version --remove-section=.comment --remove-section=.note --remove-section=.note.gnu.build-id --remove-section=.note.ABI-tag
 
 dependencies: FORCE
 	mkdir -p include || true
 	# generate servicepoint header and binary to link against
-	SERVICEPOINT_HEADER_OUT=$(THIS_DIR)/include cargo build \
-		--manifest-path=$(REPO_ROOT)/Cargo.toml \
-		--release
-
+	${CARGO} rustc $(CARGOFLAGS) -- $(RUSTFLAGS)
 FORCE: ;