diff --git a/Makefile b/Makefile
index 577786b..02b9574 100644
--- a/Makefile
+++ b/Makefile
@@ -336,19 +336,16 @@ initfs/bin/%: drivers/%/Cargo.toml drivers/%/src/** $(BUILD)/libstd.rlib
 	mkdir -p initfs/bin
 	$(CARGO) rustc --manifest-path $< $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 initfs/bin/%: programs/%/Cargo.toml programs/%/src/** $(BUILD)/libstd.rlib
 	mkdir -p initfs/bin
 	$(CARGO) rustc --manifest-path $< $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 initfs/bin/%: schemes/%/Cargo.toml schemes/%/src/** $(BUILD)/libstd.rlib
 	mkdir -p initfs/bin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 $(BUILD)/initfs.rs: \
 		initfs/bin/init \
@@ -375,13 +372,11 @@ filesystem/sbin/%: drivers/%/Cargo.toml drivers/%/src/** $(BUILD)/libstd.rlib
 	mkdir -p filesystem/sbin
 	$(CARGO) rustc --manifest-path $< $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 filesystem/bin/%: programs/%/Cargo.toml programs/%/src/** $(BUILD)/libstd.rlib
 	mkdir -p filesystem/bin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 filesystem/bin/sh: filesystem/bin/ion
 	cp $< $@
@@ -390,49 +385,41 @@ filesystem/bin/%: programs/binutils/Cargo.toml programs/binutils/src/bin/%.rs $(
 	mkdir -p filesystem/bin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 filesystem/bin/%: programs/coreutils/Cargo.toml programs/coreutils/src/bin/%.rs $(BUILD)/libstd.rlib
 	mkdir -p filesystem/bin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 filesystem/bin/%: programs/extrautils/Cargo.toml programs/extrautils/src/bin/%.rs $(BUILD)/libstd.rlib
 	mkdir -p filesystem/bin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 filesystem/bin/%: programs/netutils/Cargo.toml programs/netutils/src/%/**.rs $(BUILD)/libstd.rlib
 	mkdir -p filesystem/bin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 filesystem/ui/bin/%: programs/orbutils/Cargo.toml programs/orbutils/src/%/**.rs $(BUILD)/libstd.rlib
 	mkdir -p filesystem/ui/bin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 filesystem/bin/%: programs/pkgutils/Cargo.toml programs/pkgutils/src/%/**.rs $(BUILD)/libstd.rlib
 	mkdir -p filesystem/bin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 filesystem/bin/%: programs/userutils/Cargo.toml programs/userutils/src/bin/%.rs $(BUILD)/libstd.rlib
 	mkdir -p filesystem/bin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 filesystem/sbin/%: schemes/%/Cargo.toml schemes/%/src/** $(BUILD)/libstd.rlib
 	mkdir -p filesystem/sbin
 	$(CARGO) rustc --manifest-path $< --bin $* $(CARGOFLAGS) -o $@
 	strip $@
-	rm $@.d
 
 drivers: \
 	filesystem/sbin/pcid \
diff --git a/krustc.sh b/krustc.sh
index 9c6b5e7..cc510e8 100755
--- a/krustc.sh
+++ b/krustc.sh
@@ -1,2 +1,21 @@
 #!/bin/bash
-RUST_BACKTRACE=1 rustc -L build/kernel $*
+have_o=false
+for arg in "$@"; do
+    if [[ "$arg" = "-o" ]]; then
+        have_o=true
+        break
+    fi
+done
+
+args=()
+for arg in "$@"; do
+    if [[ $have_o = true && "$arg" =~ ^extra-filename= ]]; then
+        unset args[${#args[@]}-1]
+    elif [[ $have_o = true && "$arg" =~ ^--emit= ]]; then
+        args+=("--emit=link")
+    else
+        args+=("$arg")
+    fi
+done
+
+RUST_BACKTRACE=1 exec rustc -L build/kernel "${args[@]}"
diff --git a/programs/ion b/programs/ion
index bdd3ce6..95fa9aa 160000
--- a/programs/ion
+++ b/programs/ion
@@ -1 +1 @@
-Subproject commit bdd3ce629ee7679cf4f96ced6f81f014f00f19c4
+Subproject commit 95fa9aac0701babf0671f498092afe0719113d10
diff --git a/rustc.sh b/rustc.sh
index fa3e819..ecd5588 100755
--- a/rustc.sh
+++ b/rustc.sh
@@ -1,2 +1,21 @@
 #!/bin/bash
-RUST_BACKTRACE=1 rustc -L build/userspace $*
+have_o=false
+for arg in "$@"; do
+    if [[ "$arg" = "-o" ]]; then
+        have_o=true
+        break
+    fi
+done
+
+args=()
+for arg in "$@"; do
+    if [[ $have_o = true && "$arg" =~ ^extra-filename= ]]; then
+        unset args[${#args[@]}-1]
+    elif [[ $have_o = true && "$arg" =~ ^--emit= ]]; then
+        args+=("--emit=link")
+    else
+        args+=("$arg")
+    fi
+done
+
+RUST_BACKTRACE=1 exec rustc -L build/userspace "${args[@]}"