diff --git a/.gitignore b/.gitignore
index ddd9d5f..7832355 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ obj/
 sha256_literal/
 **/target/
 test.txt
+file.h
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..455ed51
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,3 @@
+
+sfexec-output:
+	g++ -Iinclude/ -w --std=c++17 main.cpp sha256_literal/sha256.cpp -o sfexec
diff --git a/generator-native/file.h b/generator-native/file.h
deleted file mode 100644
index 024af87..0000000
--- a/generator-native/file.h
+++ /dev/null
@@ -1,13 +0,0 @@
-constexpr const int DATA_COUNT = 1;
-constexpr const char* const DATA_EXEC_AFTER = nullptr;
-static constexpr auto DATA_EXEC_AFTER_HASH = "unbound"_sha256;
-constexpr const unsigned char DATA[] = {
-	0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x70, 0x6c,
-	0x61, 0x6e, 0x65, 0x74, 0x21, 0x0a,
-};
-constexpr const long DATA_LENGTHS[DATA_COUNT] = {
-	14ll,
-};
-constexpr const char* const DATA_NAMES[DATA_COUNT] = {
-	"test.txt",
-};
diff --git a/generator-native/src/main.rs b/generator-native/src/main.rs
index 4c8d665..27ea6ca 100644
--- a/generator-native/src/main.rs
+++ b/generator-native/src/main.rs
@@ -22,6 +22,12 @@ mod arg;
 
 use opt::Opt;
 
+macro_rules! flush {
+    () => {
+	std::io::stdout().flush().ok().expect("fatal: could not flush stdout")
+    }
+}
+
 fn usage() -> ! {
     let prog = &arg::program_name();
     println!("Usage: {} [-s] [-e <exec string>] [-o <output file>] [-] <files...>", prog);
@@ -115,8 +121,8 @@ fn main() -> Result<(), Box<dyn Error>>{
 
 	    if let Some(exec) = exec {
 		let exec = translate::c_escape(exec);
-		writeln!(fp, "constexpr const char* const DATA_EXEC_AFTER = {};", exec)?;
-		writeln!(fp, "static constexpr auto DATA_EXEC_AFTER_HASH = {}_sha256;", exec)?;
+		writeln!(fp, "constexpr const char* const DATA_EXEC_AFTER = \"{}\";", exec)?;
+		writeln!(fp, "static constexpr auto DATA_EXEC_AFTER_HASH = \"{}\"_sha256;", exec)?;
 	    } else {
 		writeln!(fp, "constexpr const char* const DATA_EXEC_AFTER = nullptr;")?;
 		writeln!(fp, "static constexpr auto DATA_EXEC_AFTER_HASH = \"unbound\"_sha256;")?;
@@ -127,6 +133,7 @@ fn main() -> Result<(), Box<dyn Error>>{
 
 	    for file in files.iter() {
 		print!(" + {}", file);
+		flush!();
 		let file = OpenOptions::new()
 		    .read(true)
 		    .open(file)?;
@@ -158,6 +165,7 @@ fn main() -> Result<(), Box<dyn Error>>{
 	    for file in files.into_iter() {
 		let file = Path::new(&file);
 		print!(" - {:?}", file);
+		flush!();
 		let file = match attempt_get_name(&file) {
 		    Ok(file) => file,
 		    Err(error) => {