diff --git a/Cargo.toml b/Cargo.toml
index 5acfd9d..d55a6df 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,4 +41,4 @@ lto = true
 
 [profile.dev]
 debug = true
-lto = true
+lto = false
diff --git a/Makefile b/Makefile
index 7341207..8ef9ad2 100644
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,13 @@ debug: build
 	arm-none-eabi-gdb target/thumbv7m-none-eabi/release/anne-key
 
 bloat:
-	$(XARGO) bloat --release --target thumbv7m-none-eabi $(BLOAT_ARGS)
+	$(XARGO) bloat --target thumbv7m-none-eabi $(BLOAT_ARGS) -n 50
+
+fmt:
+	cargo fmt
+
+clippy:
+	$(XARGO) clippy --target thumbv7m-none-eabi
 
 clean:
 	$(XARGO) clean
diff --git a/build.rs b/build.rs
index 88f7fef..539bce0 100644
--- a/build.rs
+++ b/build.rs
@@ -6,12 +6,18 @@ use std::path::PathBuf;
 fn main() {
     // Put the linker script somewhere the linker can find it
     let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    let memory_x: &[u8] = if &env::var("PROFILE").unwrap()[..] == "debug" {
+        include_bytes!("memory-debug.x")
+    } else {
+        include_bytes!("memory-release.x")
+    };
     File::create(out.join("memory.x"))
         .unwrap()
-        .write_all(include_bytes!("memory.x"))
+        .write_all(memory_x)
         .unwrap();
     println!("cargo:rustc-link-search={}", out.display());
 
     println!("cargo:rerun-if-changed=build.rs");
     println!("cargo:rerun-if-changed=memory.x");
+    println!("cargo:rerun-if-changed=memory-debug.x");
 }
diff --git a/memory-debug.x b/memory-debug.x
new file mode 100644
index 0000000..7ee373f
--- /dev/null
+++ b/memory-debug.x
@@ -0,0 +1,9 @@
+/* fake larger flash so debug builds succeed
+   can't actually use these on the stm32, but they
+   allow cargo bloat and clippy to run cleanly */
+
+MEMORY
+{
+  FLASH : ORIGIN = 0x08004000, LENGTH = 4M
+  RAM : ORIGIN = 0x20000000, LENGTH = 4M
+}
diff --git a/memory.x b/memory-release.x
similarity index 100%
rename from memory.x
rename to memory-release.x
diff --git a/src/main.rs b/src/main.rs
index d959735..63bcd56 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -216,3 +216,15 @@ fn exti9_5(_t: &mut Threshold, r: EXTI9_5::Resources) {
     // maybe only clear set bits? or ones from 9-5?
     unsafe { r.EXTI.pr.write(|w| w.bits(0xffff)) };
 }
+
+// Need this when building in debug mode without LTO, otherwise we get linker
+// errors. This isn't ever actually used.
+#[cfg(debug_assertions)]
+#[no_mangle]
+pub unsafe extern "C" fn rust_begin_unwind(
+    _args: ::core::fmt::Arguments,
+    _file: &'static str,
+    _line: u32,
+) -> ! {
+    loop {}
+}