Hello world rust

.gitignore

@@ -2,3 +2,9 @@
 *.hd
 dmrconfig
 dmrconfig.exe
+
+
+# Added by cargo
+
+/target
+Cargo.lock

Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "dmrconfig"
+version = "0.1.0"
+authors = ["Greg Shuflin <greg.shuflin@protonmail.com>"]
+edition = "2018"
+
+[lib]
+crate-type = ["staticlib"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

Makefile

@@ -12,6 +12,8 @@ CFLAGS         += -DVERSION='"$(VERSION).$(GITCOUNT)"' \
 LDFLAGS        ?= -g
 LIBS            = $(shell pkg-config --libs --static libusb-1.0)
 
+RUST_RELEASE := target/release/libdmrconfig.a
+
 #
 # Make sure pkg-config is installed.
 #
@@ -48,8 +50,8 @@ endif
 
 all:		dmrconfig
 
-dmrconfig:	$(OBJS)
-		$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
+dmrconfig:	$(OBJS) $(RUST_RELEASE)
+		$(CC) $(LDFLAGS) -o $@ $(OBJS) $(RUST_RELEASE) -ldl $(LIBS)
 
 clean:
 		rm -f *~ *.o core dmrconfig dmrconfig.exe
@@ -57,6 +59,10 @@ clean:
 install:	dmrconfig
 		install -c -s dmrconfig /usr/local/bin/dmrconfig
 
+.PHONY: $(RUST_RELEASE)
+target/release/libdmrconfig.a:
+	cargo build --verbose --release
+
 ###
 d868uv.o: d868uv.c radio.h util.h d868uv-map.h
 dfu-libusb.o: dfu-libusb.c util.h

main.c

@@ -37,6 +37,8 @@ const char *copyright;
 extern char *optarg;
 extern int optind;
 
+extern void print_message_from_rust();
+
 int trace_flag = 0;
 
 void usage()
@@ -72,6 +74,7 @@ void usage()
 
 int main(int argc, char **argv)
 {
+    print_message_from_rust();
     int read_flag = 0, write_flag = 0, config_flag = 0, csv_flag = 0;
     int list_flag = 0, verify_flag = 0;
 

src/lib.rs

@@ -0,0 +1,13 @@
+#[no_mangle]
+pub extern "C" fn print_message_from_rust() {
+  println!("Calling from Rust!");
+}
+
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}