diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 9089694..d6e58ca 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -40,5 +40,15 @@ jobs:
       - name: build
         run: cargo build
 
-      - name: build example
-        run: cd example && make
+      - name: build example -- glibc release
+        run: cd example && make clean && make PROFILE=release
+      - name: build example -- glibc debug
+        run: cd example && make clean && make PROFILE=debug
+      - name: build example -- glibc size-optimized
+        run: cd example && make clean && make PROFILE=size-optimized
+      - name: build example -- musl release
+        run: cd example && make clean && make PROFILE=release MUSL=1
+      - name: build example -- musl debug
+        run: cd example && make clean && make PROFILE=debug MUSL=1
+      - name: build example -- musl size-optimized
+        run: cd example && make clean && make PROFILE=size-optimized MUSL=1
diff --git a/Cargo.toml b/Cargo.toml
index e92ceb2..cc7b596 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,8 +26,9 @@ git = "https://git.berlin.ccc.de/servicepoint/servicepoint/"
 branch = "next"
 
 [features]
-full = ["servicepoint/all_compressions", "servicepoint/default"]
-default = ["full"]
+protocol_udp = ["servicepoint/protocol_udp"]
+all_compressions = ["servicepoint/all_compressions"]
+default = ["all_compressions", "servicepoint/default", "protocol_udp"]
 
 [lints.rust]
 missing-docs = "warn"
diff --git a/example/Makefile b/example/Makefile
index f69f385..9e001e9 100644
--- a/example/Makefile
+++ b/example/Makefile
@@ -1,83 +1,113 @@
-CC := gcc
-CARGO := rustup run nightly cargo
+CARGO ?= rustup run nightly cargo
+STRIP ?= strip
 
-TARGET := x86_64-unknown-linux-musl
-PROFILE := size-optimized
+FEATURES := protocol_udp
 
 THIS_DIR := $(dir $(realpath $(lastword $(MAKEFILE_LIST))))
-REPO_ROOT := $(THIS_DIR)/..
-RUST_TARGET_DIR := $(REPO_ROOT)/target/$(TARGET)/$(PROFILE)
+REPO_ROOT := $(realpath $(THIS_DIR)/..)
 export SERVICEPOINT_HEADER_OUT := $(REPO_ROOT)/include
 
-RUSTFLAGS := -Zlocation-detail=none \
-	-Zfmt-debug=none \
-	-C linker=musl-gcc \
-	-C link-arg=-s \
-	-C link-arg=--gc-sections \
-	-C link-arg=-z,norelro \
-	-C link-arg=--hash-style=gnu \
-	--crate-type=staticlib \
-	-C panic=abort
+override CFG_MUSL := $(if $(CFG_MUSL),$(CFG_MUSL),$(if $(MUSL),$(MUSL),0))
+override CFG_PROFILE := $(if $(CFG_PROFILE),$(CFG_PROFILE),$(if $(PROFILE),$(PROFILE),release))
 
-CARGOFLAGS := --manifest-path=$(REPO_ROOT)/Cargo.toml \
-	--profile=$(PROFILE) \
+CCFLAGS += -ffunction-sections -fdata-sections -Wl,--gc-sections -Wall -fwhole-program
+
+RUSTFLAGS += -C link-arg=-s \
+	-C link-arg=-Wl,--gc-sections \
+	--crate-type=staticlib
+
+STRIPFLAGS := -s --strip-unneeded -R .comment -R .gnu.version -R .note -R .note.gnu.build-id -R .note.ABI-tag
+
+ifeq ($(CFG_MUSL), 1)
+	TARGET ?= x86_64-unknown-linux-musl
+	CC ?= musl-gcc
+	CCFLAGS += -static
+else
+	TARGET ?= x86_64-unknown-linux-gnu
+	CC ?= gcc
+	CCFLAGS += -shared
+endif
+
+RUSTFLAGS += -C linker=$(CC)
+
+#ifeq ($(CFG_PROFILE), size-optimized)
+#	CCFLAGS += -nodefaultlibs -lc
+#endif
+
+CCFLAGS += -lservicepoint_binding_c
+RUST_TARGET_DIR := $(REPO_ROOT)/target/$(TARGET)/$(CFG_PROFILE)
+OUT_BASE_DIR := $(realpath $(THIS_DIR)/out/)
+OUT_DIR := $(realpath $(OUT_BASE_DIR)/$(CFG_PROFILE)/)
+
+CARGOFLAGS += --manifest-path=$(REPO_ROOT)/Cargo.toml \
+	--profile=$(CFG_PROFILE) \
 	--no-default-features \
-	--target=$(TARGET) \
-	-Zbuild-std="core,std,alloc,proc_macro,panic_abort" \
-	-Zbuild-std-features="panic_immediate_abort" \
+	--features=$(FEATURES) \
+	--target=$(TARGET)
 
-CCFLAGS := -static -Os \
-	-ffunction-sections -fdata-sections \
-	-fwrapv -fomit-frame-pointer -fno-stack-protector\
-	-fwhole-program \
-	-nodefaultlibs -lservicepoint_binding_c -lc \
-	-Wl,--gc-sections \
-	-fno-unroll-loops \
-	-fno-unwind-tables -fno-asynchronous-unwind-tables \
-	-fmerge-all-constants \
-	-Wl,-z,norelro \
-	-Wl,--hash-style=gnu \
-	-fvisibility=hidden \
-	-Bsymbolic \
-	-Wl,--exclude-libs,ALL \
-	-fno-ident \
-	-Wall
-	#-fuse-ld=gold \
-	-fno-exceptions
-	#-Wl,--icf=all \
+ifeq ($(CFG_PROFILE), size-optimized)
+	CCFLAGS += -Oz \
+		-fwrapv -fomit-frame-pointer -fno-stack-protector\
+		-fno-unroll-loops \
+		-fno-unwind-tables -fno-asynchronous-unwind-tables \
+		-fmerge-all-constants \
+		-Wl,-z,norelro \
+		-Wl,--hash-style=gnu \
+		-fvisibility=hidden \
+		-Bsymbolic \
+		-Wl,--exclude-libs,ALL \
+		-fno-ident \
+		-fno-exceptions
+	CARGOFLAGS += -Zbuild-std="core,std,alloc,proc_macro,panic_abort" \
+		-Zbuild-std-features="panic_immediate_abort"
+	RUSTFLAGS += -Zlocation-detail=none \
+		-Zfmt-debug=none \
+		-C link-arg=-z,norelro \
+		-C link-arg=--hash-style=gnu \
+		-C panic=abort
+else ifeq ($(CFG_PROFILE), release)
+	CCFLAGS += -O2
+else ifeq ($(CFG_PROFILE), debug)
+	CCFLAGS += -Og
+else
+	CFG_PROFILE := $(error "PROFILE has to be set to one of: debug, release, size-optimized")
+endif
 
-STRIPFLAGS := -s --strip-unneeded -R .comment -R .gnu.version -R .comment -R .note -R .note.gnu.build-id -R .note.ABI-tag
+ifeq ($(LTO), 1)
+	CCFLAGS += -flto
+endif
 
-_c_src := $(wildcard *.c)
-_programs := $(basename $(_c_src))
+_c_src := $(wildcard ./src/*.c)
+_programs := $(basename $(notdir $(_c_src)))
 _bins := $(addprefix out/, $(_programs))
 _unstripped_bins := $(addsuffix _unstripped, $(_bins))
 _run_programs := $(addprefix run_, $(_programs))
-_rs_src := $(wildcard ../src/**.rs) ../Cargo.lock
+_rs_src := $(wildcard ../src/**.rs) ../Cargo.lock ../Cargo.toml ../cbindgen.toml
+_sp_artifacts := $(SERVICEPOINT_HEADER_OUT)/servicepoint.h $(RUST_TARGET_DIR)/libservicepoint_binding_c.a $(RUST_TARGET_DIR)/libservicepoint_binding_c.so
 
 all: $(_bins)
 
 clean:
-	rm -r out || true
-	rm include/servicepoint.h || true
+	echo rm -r $(OUT_DIR) || true
+	rm $(SERVICEPOINT_HEADER_OUT)/servicepoint.h || true
 	cargo clean
 
-PHONY: all clean sizes $(_run_programs)
+.PHONY: all clean sizes $(_run_programs)
 
-$(_unstripped_bins): out/%_unstripped: %.c $(SERVICEPOINT_HEADER_OUT)/servicepoint.h $(RUST_TARGET_DIR)/libservicepoint_binding_c.a
+$(_unstripped_bins): out/%_unstripped: src/%.c $(SERVICEPOINT_HEADER_OUT)/servicepoint.h $(_sp_artifacts)
 	mkdir -p out || true
-	${CC} $^ \
+	${CC} $< \
 		-I $(SERVICEPOINT_HEADER_OUT) \
-		-L $(RUST_TARGET_DIR)\
+		-L $(RUST_TARGET_DIR) \
 		$(CCFLAGS) \
 		-o $@
 
 $(_bins): out/%: out/%_unstripped
-	strip $(STRIPFLAGS) $^ -o $@
+	$(STRIP) $(STRIPFLAGS) $^ -o $@
 
-$(SERVICEPOINT_HEADER_OUT)/servicepoint.h $(RUST_TARGET_DIR)/libservicepoint_binding_c.a: $(_rs_src)
-	mkdir -p include || true
-	# generate servicepoint header and binary to link against
+$(_sp_artifacts): $(_rs_src)
+	mkdir -p $(SERVICEPOINT_HEADER_OUT) || true
+	# generate servicepoint header and library to link against
 	${CARGO} rustc $(CARGOFLAGS) -- $(RUSTFLAGS)
 
 $(_run_programs): run_%: out/% FORCE
@@ -86,9 +116,9 @@ $(_run_programs): run_%: out/% FORCE
 sizes: $(_bins)
 	ls -lB out
 
-#analyze-size: out/example_unstripped
-#	nm --print-size --size-sort --reverse-sort --radix=d --demangle out/example_unstripped \
-#		| awk '{size=$$2+0; print size "\t" $$4}' \
-#		| less
+analyze-size: $(OUT_DIR)/$(BIN)_unstripped
+	nm --print-size --size-sort --reverse-sort --radix=d --demangle $(OUT_DIR)/$(BIN)_unstripped \
+		| awk '{size=$$2+0; print size "\t" $$4}' \
+		| less
 
 FORCE: ;
diff --git a/example/announce.c b/example/src/announce.c
similarity index 100%
rename from example/announce.c
rename to example/src/announce.c
diff --git a/example/brightness_tester.c b/example/src/brightness_tester.c
similarity index 100%
rename from example/brightness_tester.c
rename to example/src/brightness_tester.c
diff --git a/example/random_stuff.c b/example/src/random_stuff.c
similarity index 79%
rename from example/random_stuff.c
rename to example/src/random_stuff.c
index ca5a14d..2bf722e 100644
--- a/example/random_stuff.c
+++ b/example/src/random_stuff.c
@@ -1,5 +1,6 @@
-#include <stdio.h>
+//#include <stdarg.h>
 #include "servicepoint.h"
+//#include <stdio.h>
 
 int main(void) {
     UdpConnection *connection = sp_udp_open_ipv4(127, 0, 0, 1, 2342);
@@ -17,7 +18,7 @@ int main(void) {
         return 1;
 
     Header *header = sp_packet_get_header(packet);
-    printf("[%d, %d, %d, %d, %d]\n", header->command_code, header->a, header->b, header->c, header->d);
+    // printf("[%d, %d, %d, %d, %d]\n", header->command_code, header->a, header->b, header->c, header->d);
 
     sp_udp_send_packet(connection, packet);
 
diff --git a/flake.nix b/flake.nix
index b4f874f..9d67ae9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -33,16 +33,17 @@
         { pkgs, system }:
         {
           default = pkgs.mkShell rec {
-            buildInputs = with pkgs;[
+            buildInputs = with pkgs; [
               xe
               xz
-              libgcc
-              #glibc.static
-              musl
-              libunwind
-              ];
+              #libgcc
+              #glibc
+              pkgsStatic.musl
+              # libunwind
 
-            nativeBuildInputs = with pkgs;[
+            ];
+
+            nativeBuildInputs = with pkgs; [
               (pkgs.symlinkJoin {
                 name = "rust-toolchain";
                 paths = with pkgs; [
@@ -57,11 +58,14 @@
                 ];
               })
               gcc
+              gdb
+              pkgsStatic.gcc
               gnumake
               pkg-config
             ];
 
-            RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
+            #RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
+            CARGO = "rustup run nightly cargo";
           };
         }
       );
diff --git a/src/bitmap.rs b/src/bitmap.rs
index 358be48..5db4af0 100644
--- a/src/bitmap.rs
+++ b/src/bitmap.rs
@@ -1,6 +1,8 @@
 use crate::byte_slice::ByteSlice;
 use crate::{heap_drop, heap_move, heap_move_nonnull, heap_remove, SPBitVec};
-use servicepoint::{Bitmap, BitmapCommand, CompressionCode, DataRef, Grid, Origin, Packet};
+use servicepoint::{
+    Bitmap, BitmapCommand, CompressionCode, DataRef, Grid, Origin, Packet,
+};
 use std::ptr::NonNull;
 
 /// Creates a new [Bitmap] with the specified dimensions.
@@ -210,7 +212,7 @@ pub unsafe extern "C" fn sp_bitmap_into_packet(
     bitmap: NonNull<Bitmap>,
     x: usize,
     y: usize,
-    compression: CompressionCode
+    compression: CompressionCode,
 ) -> *mut Packet {
     let bitmap = unsafe { heap_remove(bitmap) };
     match Packet::try_from(BitmapCommand {
diff --git a/src/bitvec.rs b/src/bitvec.rs
index 22f7545..82c0fbe 100644
--- a/src/bitvec.rs
+++ b/src/bitvec.rs
@@ -1,5 +1,7 @@
 use crate::{heap_drop, heap_move, heap_move_nonnull, heap_remove, ByteSlice};
-use servicepoint::{BinaryOperation, BitVecCommand, BitVecU8Msb0, CompressionCode, Packet};
+use servicepoint::{
+    BinaryOperation, BitVecCommand, BitVecU8Msb0, CompressionCode, Packet,
+};
 use std::ptr::NonNull;
 
 /// A vector of bits
@@ -157,7 +159,7 @@ pub unsafe extern "C" fn sp_bitvec_into_packet(
     bitvec: NonNull<SPBitVec>,
     offset: usize,
     operation: BinaryOperation,
-    compression: CompressionCode
+    compression: CompressionCode,
 ) -> *mut Packet {
     let bitvec = unsafe { heap_remove(bitvec) }.0;
     match Packet::try_from(BitVecCommand {
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
deleted file mode 100644
index 1ea03d5..0000000
--- a/src/commands/mod.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-mod typed;
-
-pub use typed::*;
diff --git a/src/cp437_grid.rs b/src/cp437_grid.rs
index 01aeb1e..ff70d2b 100644
--- a/src/cp437_grid.rs
+++ b/src/cp437_grid.rs
@@ -1,5 +1,7 @@
 use crate::{heap_drop, heap_move, heap_move_nonnull, heap_remove, ByteSlice};
-use servicepoint::{Cp437Grid, Cp437GridCommand, DataRef, Grid, Origin, Packet};
+use servicepoint::{
+    Cp437Grid, Cp437GridCommand, DataRef, Grid, Origin, Packet,
+};
 use std::ptr::NonNull;
 
 /// Creates a new [Cp437Grid] with the specified dimensions.
diff --git a/src/lib.rs b/src/lib.rs
index 05fb009..57192e0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -30,22 +30,26 @@ pub use crate::bitvec::*;
 pub use crate::brightness_grid::*;
 pub use crate::byte_slice::*;
 pub use crate::char_grid::*;
-pub use crate::commands::*;
-pub use crate::connection::*;
 pub use crate::cp437_grid::*;
 pub use crate::packet::*;
 pub use servicepoint::CommandCode;
 use std::ptr::NonNull;
+pub use typed_command::*;
 
 mod bitmap;
 mod bitvec;
 mod brightness_grid;
 mod byte_slice;
 mod char_grid;
-mod commands;
-mod connection;
 mod cp437_grid;
 mod packet;
+mod typed_command;
+
+#[cfg(feature = "protocol_udp")]
+mod udp;
+
+#[cfg(feature = "protocol_udp")]
+pub use udp::*;
 
 use std::time::Duration;
 
diff --git a/src/commands/typed.rs b/src/typed_command.rs
similarity index 100%
rename from src/commands/typed.rs
rename to src/typed_command.rs
diff --git a/src/connection.rs b/src/udp.rs
similarity index 100%
rename from src/connection.rs
rename to src/udp.rs