initial draft

compiler/backend/backend.odin

@@ -0,0 +1,46 @@
+package backend
+
+import "core:fmt"
+import "core:os"
+import "core:os/os2"
+
+compile :: proc(llvm_path, output_path: string) -> bool {
+	pid := os2.get_pid()
+	temporary_output := fmt.tprintf("%s.brolang-tmp-%d", output_path, pid)
+	defer _ = os.remove(temporary_output)
+
+	command := []string{
+		"/usr/bin/env",
+		"ZIG_LOCAL_CACHE_DIR=/tmp/brolang-zig-cache",
+		"ZIG_GLOBAL_CACHE_DIR=/tmp/brolang-zig-global-cache",
+		"zig",
+		"cc",
+		"-Wno-override-module",
+		llvm_path,
+		"-o",
+		temporary_output,
+	}
+	state, stdout, stderr, err := os2.process_exec(
+		os2.Process_Desc{command=command},
+		context.allocator,
+	)
+	defer delete(stdout)
+	defer delete(stderr)
+	if len(stdout) > 0 {
+		fmt.print(string(stdout))
+	}
+	if len(stderr) > 0 {
+		fmt.eprint(string(stderr))
+	}
+	if err != nil || state.exit_code != 0 {
+		if err != nil {
+			fmt.eprintln("failed to execute zig cc:", err)
+		}
+		return false
+	}
+	if rename_err := os2.rename(temporary_output, output_path); rename_err != nil {
+		fmt.eprintln("failed to atomically replace output:", rename_err)
+		return false
+	}
+	return true
+}