diff --git a/.gitmodules b/.gitmodules
index 3576ce0..7e7acaf 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "libicmp"]
 	path = libicmp
 	url = git@github.com:lohhiiccc/icmp.git
+[submodule "libcli"]
+	path = libcli
+	url = forgejo@lohic.dev:loic/libcli.git
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 55fc506..0000000
--- a/Makefile
+++ /dev/null
@@ -1,280 +0,0 @@
-# Makefile for ft_ping
-# Uses build.mk generated by ./configure script
-
-# Configuration
-
-# Include generated configuration (must run ./configure first)
--include build.mk
-
-# Check if build.mk exists
-ifeq ($(wildcard build.mk),)
-$(error build.mk not found. Please run './configure' first)
-endif
-
-# Project Configuration
-
-NAME = ft_ping
-TEST_BIN = ft_ping.test
-VERSION := 0.0.1
-BUILD_DATE := $(shell git log -1 --format=%cd --date=format:'%Y-%m-%d %H:%M:%S' 2>/dev/null || date -u '+%Y-%m-%d %H:%M:%S')
-GIT_COMMIT := $(shell git rev-parse --short HEAD 2>/dev/null || echo "nogit")
-
-ifeq ($(GIT_COMMIT),nogit)
-    HAS_GIT_COMMIT=0
-else
-    HAS_GIT_COMMIT=1
-endif
-
-.DEFAULT_GOAL := all
-MAKEFLAGS += --no-print-directory
-
-BINARIES = ft_ping
-# Future: BINARIES = ft_ping ft_traceroute
-
-# Include source files
-include sources/ping.mk
-
-SRCS = $(PING_SRCS)
-TESTS = $(PING_TESTS)
-
-# Get libicmp sources for dependency tracking if building locally
-ifeq ($(BUILD_LOCAL_LIBICMP),yes)
-LIBICMP_SRCS = $(shell find $(LIBICMP_DIR)/src -type f -name '*.c' 2>/dev/null)
-LIBICMP_HEADERS = $(wildcard $(LIBICMP_DIR)/includes/*.h)
-endif
-
-# Build Directories
-OBJ_DIR = build
-OBJS = $(SRCS:src/%.c=$(OBJ_DIR)/%.o)
-DEPS = $(OBJS:.o=.d)
-
-# Build Rules
-
-VERSION_HEADER = includes/version_gen.h
-
-$(VERSION_HEADER): FORCE
-	@$(MAKE) --no-print-directory update-version-header
-
-.PHONY: update-version-header
-update-version-header:
-	@NEW_HEADER=$$(mktemp); \
-	echo "/* Auto-generated - DO NOT EDIT */" > $$NEW_HEADER; \
-	echo "#ifndef PING_VERSION_GEN_H" >> $$NEW_HEADER; \
-	echo "#define PING_VERSION_GEN_H" >> $$NEW_HEADER; \
-	echo "#define PING_VERSION \"$(VERSION)\"" >> $$NEW_HEADER; \
-	echo "#define PING_BUILD_DATE \"$(BUILD_DATE)\"" >> $$NEW_HEADER; \
-	echo "#define PING_GIT_COMMIT \"$(GIT_COMMIT)\"" >> $$NEW_HEADER; \
-	echo "#define PING_HAS_GIT_COMMIT $(HAS_GIT_COMMIT)" >> $$NEW_HEADER; \
-	echo "" >> $$NEW_HEADER; \
-	echo "struct prog_name" >> $$NEW_HEADER; \
-	echo "{" >> $$NEW_HEADER; \
-	echo "	char		*alloc;" >> $$NEW_HEADER; \
-	echo "	const char	*name;" >> $$NEW_HEADER; \
-	echo "};" >> $$NEW_HEADER; \
-	echo "" >> $$NEW_HEADER; \
-	echo "extern struct prog_name g_prog_name;" >> $$NEW_HEADER; \
-	echo "" >> $$NEW_HEADER; \
-	echo "#endif" >> $$NEW_HEADER; \
-	if [ ! -f $(VERSION_HEADER) ] || ! cmp -s $$NEW_HEADER $(VERSION_HEADER); then \
-		mv $$NEW_HEADER $(VERSION_HEADER); \
-		echo "[OK] Version header generated"; \
-	else \
-		rm -f $$NEW_HEADER; \
-	fi
-
-FORCE:
-.PHONY: FORCE
-
-.PHONY: all
-all: $(LIBICMP_DEP) $(VERSION_HEADER) $(NAME)
-
-# Build local libicmp if needed
-ifeq ($(BUILD_LOCAL_LIBICMP),yes)
-$(LIBICMP_DEP): $(LIBICMP_SRCS) $(LIBICMP_HEADERS)
-	@echo "[BUILD] Building local libicmp..."
-	$(MAKE) -C $(LIBICMP_DIR) -f $(LIBICMP_MAKEFILE) $(LIBICMP_BUILD_FLAGS)
-	@echo "[OK] libicmp built successfully"
-endif
-
-# Link ft_ping
-$(NAME): $(OBJS) $(LIBICMP_DEP)
-	$(CC) -o $@ $(OBJS) $(LDFLAGS)
-	@echo "[OK] $(NAME) built successfully"
-
-# Compile object files
-$(OBJ_DIR)/%.o: src/%.c
-	@mkdir -p $(dir $@)
-	$(CC) $(CPPFLAGS) $(CFLAGS) -MMD -MP -c $< -o $@
-
-# Include dependencies
--include $(DEPS)
-
-# Test Rules
-
-.PHONY: test
-ifeq ($(ENABLE_TESTS),yes)
-test: $(TEST_BIN)
-	@echo "[TEST] Running tests..."
-ifeq ($(SUDO_TESTS),yes)
-	@if [ "$$(id -u)" -ne 0 ]; then \
-		echo "[WARN] Tests require root privileges, using sudo..."; \
-		sudo ./$(TEST_BIN); \
-	else \
-		./$(TEST_BIN); \
-	fi
-else
-	./$(TEST_BIN)
-endif
-	@echo "[OK] All tests passed"
-
-
-$(TEST_BIN): $(VERSION_HEADER) $(TESTS) $(filter-out $(OBJ_DIR)/ping/main.o,$(OBJS)) $(LIBICMP_DEP)
-	@mkdir -p $(dir $@)
-	@echo "[BUILD] Building test binary..."
-	$(CC) $(CPPFLAGS) $(CFLAGS) $(filter-out $(VERSION_HEADER),$^) $(LDFLAGS) $(TEST_LDFLAGS) -o $@
-else
-test:
-	@echo "[SKIP] Tests are disabled"
-	@echo "Run './configure --enable-tests' to enable tests"
-endif
-
-# Installation Rules
-
-.PHONY: install
-install: all
-	@echo "[INSTALL] Installing $(NAME)..."
-ifeq ($(BUILD_LOCAL_LIBICMP),yes)
-ifeq ($(LIBICMP_TYPE),shared)
-	@echo "[INSTALL] Installing libicmp (shared) to $(LIBICMP_PREFIX)..."
-	$(MAKE) -C $(LIBICMP_DIR) -f $(LIBICMP_MAKEFILE) install PREFIX=$(LIBICMP_PREFIX) BUILD_SHARED=yes BUILD_STATIC=no
-	@echo "[OK] libicmp installed"
-else ifeq ($(INSTALL_LIBICMP),yes)
-	@echo "[INSTALL] Installing libicmp to $(LIBICMP_PREFIX)..."
-	$(MAKE) -C $(LIBICMP_DIR) -f $(LIBICMP_MAKEFILE) install PREFIX=$(LIBICMP_PREFIX)
-	@echo "[OK] libicmp installed"
-endif
-endif
-	@echo "[INSTALL] Installing binary to $(BINDIR)..."
-	install -d $(DESTDIR)$(BINDIR)
-	install -m 755 $(NAME) $(DESTDIR)$(BINDIR)/$(NAME)
-	@echo "[OK] $(NAME) installed to $(BINDIR)/$(NAME)"
-	@echo ""
-	@echo "Installation complete!"
-	@echo "Run: $(BINDIR)/$(NAME)"
-
-.PHONY: uninstall
-uninstall:
-	@echo "[UNINSTALL] Removing $(NAME)..."
-	$(RM) $(DESTDIR)$(BINDIR)/$(NAME)
-	@echo "[OK] $(NAME) removed"
-ifeq ($(BUILD_LOCAL_LIBICMP),yes)
-ifeq ($(LIBICMP_TYPE),shared)
-	@echo "[UNINSTALL] Removing libicmp (shared)..."
-	$(MAKE) -C $(LIBICMP_DIR) -f $(LIBICMP_MAKEFILE) uninstall PREFIX=$(LIBICMP_PREFIX)
-	@echo "[OK] libicmp removed"
-else ifeq ($(INSTALL_LIBICMP),yes)
-	@echo "[UNINSTALL] Removing libicmp..."
-	$(MAKE) -C $(LIBICMP_DIR) -f $(LIBICMP_MAKEFILE) uninstall PREFIX=$(LIBICMP_PREFIX)
-	@echo "[OK] libicmp removed"
-endif
-endif
-
-# Clean Rules
-
-.PHONY: clean
-clean:
-	@echo "[CLEAN] Cleaning object files..."
-	$(RM) $(VERSION_HEADER)
-	$(RM) -r $(OBJ_DIR)
-ifeq ($(BUILD_LOCAL_LIBICMP),yes)
-	@echo "[CLEAN] Cleaning libicmp..."
-	$(MAKE) -C $(LIBICMP_DIR) -f $(LIBICMP_MAKEFILE) clean
-endif
-	@echo "[OK] Clean complete"
-
-.PHONY: fclean
-fclean: clean
-	@echo "[FCLEAN] Removing binaries..."
-	$(RM) $(NAME)
-	$(RM) $(TEST_BIN)
-ifeq ($(BUILD_LOCAL_LIBICMP),yes)
-	@echo "[FCLEAN] Cleaning libicmp binaries..."
-	$(MAKE) -C $(LIBICMP_DIR) -f $(LIBICMP_MAKEFILE) fclean
-endif
-	@echo "[OK] Full clean complete"
-
-.PHONY: re
-re: fclean
-	$(MAKE) all
-
-# Configuration Management
-
-.PHONY: reconfigure
-reconfigure:
-	@echo "[INFO] Removing build.mk..."
-	$(RM) build.mk
-	@echo "[INFO] Please run './configure' again"
-
-.PHONY: distclean
-distclean: fclean
-	@echo "[DISTCLEAN] Removing generated configuration..."
-	$(RM) build.mk
-	@echo "[OK] Distribution clean complete"
-
-
-# Information Rules
-
-
-.PHONY: info
-info:
-	@echo "======================================"
-	@echo "Build Configuration for $(NAME)"
-	@echo "======================================"
-	@echo ""
-	@echo "libicmp:"
-	@echo " Source:             $(if $(filter yes,$(USE_SYSTEM_LIBICMP)),system,local)"
-	@echo " Type:               $(LIBICMP_TYPE)"
-	@echo " Path:               $(LIBICMP_PATH)"
-	@echo " Build local:        $(BUILD_LOCAL_LIBICMP)"
-	@echo " Install to system:  $(INSTALL_LIBICMP)"
-	@echo ""
-	@echo "Compiler:"
-	@echo " CC:                 $(CC)"
-	@echo " CPPFLAGS:           $(CPPFLAGS)"
-	@echo " CFLAGS:             $(CFLAGS)"
-	@echo " LDFLAGS:            $(LDFLAGS)"
-	@echo ""
-	@echo "Build Options:"
-	@echo " Debug:              $(ENABLE_DEBUG)"
-	@echo " Sanitizers:         $(ENABLE_SANITIZERS)"
-	@echo " LTO:                $(ENABLE_LTO)"
-	@echo " Strict:             $(ENABLE_STRICT)"
-	@echo " Tests:              $(ENABLE_TESTS)"
-	@echo ""
-	@echo "Installation:"
-	@echo " PREFIX:             $(PREFIX)"
-	@echo " BINDIR:             $(BINDIR)"
-	@echo " LIBDIR:             $(LIBDIR)"
-	@echo " INCLUDEDIR:         $(INCLUDEDIR)"
-	@echo ""
-	@echo "Run './configure --help' to reconfigure"
-
-.PHONY: help
-help:
-	@echo "Available targets:"
-	@echo ""
-	@echo " make or make all  Build ft_ping"
-	@echo " make test         Run tests (if enabled)"
-	@echo " make install      Install to PREFIX ($(PREFIX))"
-	@echo " make uninstall    Uninstall from system"
-	@echo " make clean        Remove object files"
-	@echo " make fclean       Remove all built files"
-	@echo " make re           Rebuild everything"
-	@echo " make reconfigure  Remove build.mk (run ./configure again)"
-	@echo " make distclean    Full clean including build.mk"
-	@echo " make info         Show build configuration"
-	@echo " make help         Show this help"
-	@echo ""
-	@echo "Note: Run './configure' first to generate build.mk"
-
-# vim: tabstop=8 shiftwidth=8 noexpandtab
diff --git a/configure b/configure
deleted file mode 100755
index 3217c5d..0000000
--- a/configure
+++ /dev/null
@@ -1,707 +0,0 @@
-#!/usr/bin/env bash
-# configure - Configuration script for ft_ping
-# Generates build.mk with build configuration
-
-set -e
-
-# CONSTANTS
-
-SCRIPT_VERSION="1.0.0"
-PROJECT_NAME="ft_ping"
-BUILD_MK="build.mk"
-LIBICMP_DIR="libicmp"
-LIBICMP_MAKEFILE="Makefile"
-
-# Default values
-DEFAULT_PREFIX="/usr/local"
-DEFAULT_CC="clang"
-DEFAULT_LIBICMP_MODE="auto"
-DEFAULT_LIBRARY_TYPE="shared"
-DEFAULT_ENABLE_TESTS="no"
-DEFAULT_ENABLE_DEBUG="no"
-DEFAULT_ENABLE_SANITIZERS="no"
-DEFAULT_ENABLE_LTO="no"
-DEFAULT_ENABLE_STRICT="no"
-DEFAULT_SUDO_TESTS="yes"
-DEFAULT_INSTALL_LIBICMP="no"
-
-# Current configuration
-PREFIX="$DEFAULT_PREFIX"
-CC="$DEFAULT_CC"
-LIBICMP_MODE="$DEFAULT_LIBICMP_MODE"
-LIBRARY_TYPE="$DEFAULT_LIBRARY_TYPE"
-LIBRARY_PREFERENCE="prefer" # prefer, only
-ENABLE_TESTS="$DEFAULT_ENABLE_TESTS"
-ENABLE_DEBUG="$DEFAULT_ENABLE_DEBUG"
-ENABLE_SANITIZERS="$DEFAULT_ENABLE_SANITIZERS"
-ENABLE_LTO="$DEFAULT_ENABLE_LTO"
-ENABLE_STRICT="$DEFAULT_ENABLE_STRICT"
-SUDO_TESTS="$DEFAULT_SUDO_TESTS"
-INSTALL_LIBICMP="$DEFAULT_INSTALL_LIBICMP"
-VERBOSE="no"
-QUIET="no"
-
-# User-provided flags
-USER_CFLAGS=""
-USER_LDFLAGS=""
-USER_CPPFLAGS=""
-
-# Derived paths
-BINDIR=""
-LIBDIR=""
-INCLUDEDIR=""
-LIBICMP_PREFIX=""
-
-# HELPER FUNCTIONS
-
-info() {
-	if [ "$QUIET" != "yes" ]; then
-		echo -e "[INFO] $*"
-	fi
-}
-
-success() {
-	if [ "$QUIET" != "yes" ]; then
-		echo -e "[OK] $*"
-	fi
-}
-
-warn() {
-	echo -e "[WARN] $*" >&2
-}
-
-error() {
-	echo -e "[ERROR] $*" >&2
-}
-
-fatal() {
-	error "$@"
-	exit 1
-}
-
-verbose() {
-	if [ "$VERBOSE" = "yes" ]; then
-		echo -e "[VERBOSE] $*"
-	fi
-}
-
-# HELP
-
-show_help() {
-	cat << EOF
-Usage: ./configure [OPTIONS]
-
-Configuration script for $PROJECT_NAME v$SCRIPT_VERSION
-
-libicmp Options:
-  --with-system-libicmp   Use system-installed libicmp (fail if not found)
-  --with-local-libicmp    Build local libicmp (ignore system version)
-  --auto-libicmp          Auto-detect libicmp (default)
-
-Library Type Options:
-  --prefer-static         Prefer static library (.a) with fallback (default if local)
-  --prefer-shared         Prefer shared library (.so) with fallback (default if system)
-  --static-only           Require static library (fail if unavailable)
-  --shared-only           Require shared library (fail if unavailable)
-
-Build Options:
-  --enable-debug          Enable debug symbols (-g -O0)
-  --disable-debug         Disable debug (default, -O2)
-  --enable-sanitizers     Enable AddressSanitizer and UndefinedBehaviorSanitizer
-  --enable-lto            Enable Link Time Optimization
-  --strict                Enable strict warnings (-Wpedantic -Wconversion etc.)
-
-Installation Paths:
-  --prefix=PREFIX         Installation prefix (default: $DEFAULT_PREFIX)
-  --bindir=DIR            Binary directory (default: PREFIX/bin)
-  --libdir=DIR            Library directory (default: PREFIX/lib)
-  --includedir=DIR        Include directory (default: PREFIX/include)
-  --libicmp-prefix=PREFIX libicmp installation prefix (default: same as --prefix)
-
-Test Options:
-  --enable-tests          Build tests (requires criterion)
-  --disable-tests         Don't build tests (default)
-  --enable-sudo-tests     Tests require sudo (default)
-  --disable-sudo-tests    Tests without sudo (requires capabilities)
-
-libicmp Installation:
-  --install-libicmp       Install libicmp to system (if built locally)
-  --no-install-libicmp    Don't install libicmp (default)
-
-Compiler Options:
-  CC=compiler             Specify compiler (default: $DEFAULT_CC)
-  CFLAGS="flags"          Additional compilation flags
-  CPPFLAGS="flags"        Additional preprocessor flags
-  LDFLAGS="flags"         Additional linker flags
-
-Other Options:
-  --help, -h              Show this help message
-  --version, -v           Show version
-  --verbose               Verbose output during configuration
-  --quiet, -q             Quiet mode (minimal output)
-
-Examples:
-  ./configure
-  ./configure             --with-local-libicmp --static-only
-  ./configure             --enable-debug --enable-sanitizers --enable-tests
-  ./configure             --prefix=/opt/ft_ping --install-libicmp
-  ./configure             CC=gcc --strict
-
-EOF
-	exit 0
-}
-
-show_version() {
-	echo "$PROJECT_NAME configure script version $SCRIPT_VERSION"
-	exit 0
-}
-
-# ARGUMENT PARSING
-
-parse_arguments() {
-	while [ $# -gt 0 ]; do
-		case "$1" in
-			--help|-h)
-				show_help
-				;;
-			--version|-v)
-				show_version
-				;;
-			--verbose)
-				VERBOSE="yes"
-				;;
-			--quiet|-q)
-				QUIET="yes"
-				;;
-			
-			# libicmp mode
-			--with-system-libicmp)
-				LIBICMP_MODE="system"
-				;;
-			--with-local-libicmp)
-				LIBICMP_MODE="local"
-				;;
-			--auto-libicmp)
-				LIBICMP_MODE="auto"
-				;;
-			
-			# Library type
-			--prefer-static)
-				LIBRARY_TYPE="static"
-				LIBRARY_PREFERENCE="prefer"
-				;;
-			--prefer-shared)
-				LIBRARY_TYPE="shared"
-				LIBRARY_PREFERENCE="prefer"
-				;;
-			--static-only)
-				LIBRARY_TYPE="static"
-				LIBRARY_PREFERENCE="only"
-				;;
-			--shared-only)
-				LIBRARY_TYPE="shared"
-				LIBRARY_PREFERENCE="only"
-				;;
-			
-			# Build options
-			--enable-debug)
-				ENABLE_DEBUG="yes"
-				;;
-			--disable-debug)
-				ENABLE_DEBUG="no"
-				;;
-			--enable-sanitizers)
-				ENABLE_SANITIZERS="yes"
-				;;
-			--enable-lto)
-				ENABLE_LTO="yes"
-				;;
-			--strict)
-				ENABLE_STRICT="yes"
-				;;
-			
-			# Installation paths
-			--prefix=*)
-				PREFIX="${1#*=}"
-				;;
-			--bindir=*)
-				BINDIR="${1#*=}"
-				;;
-			--libdir=*)
-				LIBDIR="${1#*=}"
-				;;
-			--includedir=*)
-				INCLUDEDIR="${1#*=}"
-				;;
-			--libicmp-prefix=*)
-				LIBICMP_PREFIX="${1#*=}"
-				;;
-			
-			# Tests
-			--enable-tests)
-				ENABLE_TESTS="yes"
-				;;
-			--disable-tests)
-				ENABLE_TESTS="no"
-				;;
-			--enable-sudo-tests)
-				SUDO_TESTS="yes"
-				;;
-			--disable-sudo-tests)
-				SUDO_TESTS="no"
-				;;
-			
-			# libicmp installation
-			--install-libicmp)
-				INSTALL_LIBICMP="yes"
-				;;
-			--no-install-libicmp)
-				INSTALL_LIBICMP="no"
-				;;
-			
-			# Compiler variables
-			CC=*)
-				CC="${1#*=}"
-				;;
-			CFLAGS=*)
-				USER_CFLAGS="${1#*=}"
-				;;
-			CPPFLAGS=*)
-				USER_CPPFLAGS="${1#*=}"
-				;;
-			LDFLAGS=*)
-				USER_LDFLAGS="${1#*=}"
-				;;
-			
-			*)
-				fatal "Unknown option: $1\nTry './configure --help' for more information."
-				;;
-		esac
-		shift
-	done
-}
-
-# VALIDATION
-
-validate_configuration() {
-	verbose "Validating configuration..."
-	
-	# Check for conflicting options
-	if [ "$LIBICMP_MODE" = "system" ] && [ "$INSTALL_LIBICMP" = "yes" ]; then
-		warn "Option --install-libicmp ignored when using system libicmp"
-		INSTALL_LIBICMP="no"
-	fi
-	
-	# Set derived paths
-	[ -z "$BINDIR" ] && BINDIR="$PREFIX/bin"
-	[ -z "$LIBDIR" ] && LIBDIR="$PREFIX/lib"
-	[ -z "$INCLUDEDIR" ] && INCLUDEDIR="$PREFIX/include"
-	[ -z "$LIBICMP_PREFIX" ] && LIBICMP_PREFIX="$PREFIX"
-	
-	verbose "PREFIX=$PREFIX"
-	verbose "BINDIR=$BINDIR"
-	verbose "LIBDIR=$LIBDIR"
-	verbose "INCLUDEDIR=$INCLUDEDIR"
-}
-
-# DETECTION
-
-check_command() {
-	local cmd="$1"
-	if command -v "$cmd" >/dev/null 2>&1; then
-		return 0
-	else
-		return 1
-	fi
-}
-
-check_compiler() {
-	info "Checking for compiler: $CC"
-	
-	if ! check_command "$CC"; then
-		fatal "Compiler '$CC' not found"
-	fi
-	
-	# Get compiler version
-	local cc_version
-	cc_version=$($CC --version 2>&1 | head -n1)
-	success "Found $cc_version"
-	
-	verbose "Compiler: $CC"
-	verbose "Version: $cc_version"
-}
-
-detect_system_libicmp() {
-	local system_libdir="${PREFIX}/lib"
-	local system_includedir="${PREFIX}/include"
-	
-	verbose "Searching for system libicmp in $system_libdir"
-	
-	SYSTEM_LIBICMP_STATIC="${system_libdir}/libicmp.a"
-	SYSTEM_LIBICMP_SHARED="${system_libdir}/libicmp.so"
-	SYSTEM_ICMP_H="${system_includedir}/icmp.h"
-	
-	HAS_STATIC="no"
-	HAS_SHARED="no"
-	HAS_HEADERS="no"
-	
-	if [ -f "$SYSTEM_LIBICMP_STATIC" ]; then
-		HAS_STATIC="yes"
-		verbose "Found static library: $SYSTEM_LIBICMP_STATIC"
-	fi
-	
-	if [ -f "$SYSTEM_LIBICMP_SHARED" ]; then
-		HAS_SHARED="yes"
-		verbose "Found shared library: $SYSTEM_LIBICMP_SHARED"
-	fi
-	
-	if [ -f "$SYSTEM_ICMP_H" ]; then
-		HAS_HEADERS="yes"
-		verbose "Found headers: $SYSTEM_ICMP_H"
-	fi
-	
-	if [ "$HAS_HEADERS" = "yes" ] && { [ "$HAS_STATIC" = "yes" ] || [ "$HAS_SHARED" = "yes" ]; }; then
-		return 0 # System libicmp found
-	else
-		return 1 # System libicmp not found
-	fi
-}
-
-decide_libicmp_source() {
-	info "Determining libicmp source..."
-	
-	case "$LIBICMP_MODE" in
-		system)
-			verbose "Mode: force system libicmp"
-			if detect_system_libicmp; then
-				success "Using system-installed libicmp from $PREFIX/lib"
-				USE_SYSTEM_LIBICMP="yes"
-				BUILD_LOCAL_LIBICMP="no"
-			else
-				fatal "System libicmp not found but --with-system-libicmp specified"
-			fi
-			;;
-		
-		local)
-			verbose "Mode: force local build"
-			success "Building local libicmp from $LIBICMP_DIR/"
-			USE_SYSTEM_LIBICMP="no"
-			BUILD_LOCAL_LIBICMP="yes"
-			;;
-		
-		auto)
-			verbose "Mode: auto-detect"
-			if detect_system_libicmp; then
-				success "Using system-installed libicmp from $PREFIX/lib"
-				USE_SYSTEM_LIBICMP="yes"
-				BUILD_LOCAL_LIBICMP="no"
-			else
-				info "System libicmp not found, will build local version"
-				USE_SYSTEM_LIBICMP="no"
-				BUILD_LOCAL_LIBICMP="yes"
-			fi
-			;;
-	esac
-}
-
-determine_library_type() {
-	info "Determining library type..."
-	
-	if [ "$USE_SYSTEM_LIBICMP" = "yes" ]; then
-		# System library - check what's available
-		case "$LIBRARY_TYPE" in
-			static)
-				if [ "$HAS_STATIC" = "yes" ]; then
-					FINAL_LIBRARY_TYPE="static"
-					LIBICMP_PATH="$SYSTEM_LIBICMP_STATIC"
-					success "Using static system library"
-				elif [ "$LIBRARY_PREFERENCE" = "only" ]; then
-					fatal "Static library required but only shared library found"
-				elif [ "$HAS_SHARED" = "yes" ]; then
-					warn "Static library not found, falling back to shared"
-					FINAL_LIBRARY_TYPE="shared"
-					LIBICMP_PATH="$SYSTEM_LIBICMP_SHARED"
-				else
-					fatal "No suitable library found"
-				fi
-				;;
-			shared)
-				if [ "$HAS_SHARED" = "yes" ]; then
-					FINAL_LIBRARY_TYPE="shared"
-					LIBICMP_PATH="$SYSTEM_LIBICMP_SHARED"
-					success "Using shared system library"
-				elif [ "$LIBRARY_PREFERENCE" = "only" ]; then
-					fatal "Shared library required but only static library found"
-				elif [ "$HAS_STATIC" = "yes" ]; then
-					warn "Shared library not found, falling back to static"
-					FINAL_LIBRARY_TYPE="static"
-					LIBICMP_PATH="$SYSTEM_LIBICMP_STATIC"
-				else
-					fatal "No suitable library found"
-				fi
-				;;
-		esac
-	else
-		# Local build - we control what to build
-		FINAL_LIBRARY_TYPE="$LIBRARY_TYPE"
-		
-		if [ "$FINAL_LIBRARY_TYPE" = "static" ]; then
-			LIBICMP_BUILD_STATIC="yes"
-			LIBICMP_BUILD_SHARED="no"
-			LIBICMP_PATH="$LIBICMP_DIR/libicmp.a"
-			success "Will build static library"
-		else
-			LIBICMP_BUILD_STATIC="no"
-			LIBICMP_BUILD_SHARED="yes"
-			LIBICMP_PATH="$LIBICMP_DIR/libicmp.so"
-			success "Will build shared library"
-		fi
-	fi
-	
-	verbose "Final library type: $FINAL_LIBRARY_TYPE"
-	verbose "Library path: $LIBICMP_PATH"
-}
-
-check_test_dependencies() {
-	if [ "$ENABLE_TESTS" = "yes" ]; then
-		info "Checking test dependencies..."
-		
-		# Check for criterion library
-		if ! $CC -lcriterion -o /dev/null -xc - >/dev/null 2>&1 <<< "int main(){return 0;}"; then
-			warn "Criterion library not found, tests may fail to build"
-			warn "Install criterion: https://github.com/Snaipe/Criterion"
-		else
-			success "Found criterion library"
-		fi
-	fi
-}
-
-# BUILD.MK GENERATION
-
-generate_build_mk() {
-	info "Generating $BUILD_MK..."
-	
-	local timestamp
-	timestamp=$(date '+%Y-%m-%d %H:%M:%S')
-	
-	# Prepare compiler flags
-	local cflags="-Wall -Wextra -Werror -pipe"
-	local cppflags="-std=c99 -I includes -D_GNU_SOURCE"
-	local ldflags=""
-	local debug_flags=""
-	local sanitizer_flags=""
-	local lto_flags=""
-	local strict_flags=""
-	
-	# Debug flags
-	if [ "$ENABLE_DEBUG" = "yes" ]; then
-		debug_flags="-g -O0 -DDEBUG"
-	else
-		debug_flags="-O2 -DNDEBUG"
-	fi
-	
-	# Sanitizer flags
-	if [ "$ENABLE_SANITIZERS" = "yes" ]; then
-		sanitizer_flags="-fsanitize=address,undefined -fno-omit-frame-pointer"
-	fi
-	
-	# LTO flags
-	if [ "$ENABLE_LTO" = "yes" ]; then
-		lto_flags="-flto"
-	fi
-	
-	# Strict flags
-	if [ "$ENABLE_STRICT" = "yes" ]; then
-		strict_flags="-Wpedantic -Wconversion -Wshadow -Wcast-align -Wstrict-prototypes -Wvla -Wswitch-enum -Wunreachable-code"
-	fi
-	
-	# libicmp-specific configuration
-	if [ "$USE_SYSTEM_LIBICMP" = "yes" ]; then
-		LIBICMP_DEP=""
-		ldflags="-licmp"
-	else
-		LIBICMP_DEP="$LIBICMP_PATH"
-		cppflags="$cppflags -I $LIBICMP_DIR/includes"
-		ldflags="-L$LIBICMP_DIR -licmp"
-
-		if [ "$FINAL_LIBRARY_TYPE" = "shared" ] && [ "$INSTALL_LIBICMP" = "yes" ]; then
-			ldflags="$ldflags -Wl,-rpath,$LIBDIR"
-		fi
-	fi
-	
-	# Math library (required for stats mdev)
-	ldflags="$ldflags -lm"
-
-	# User-provided flags
-	if [ -n "$USER_CFLAGS" ]; then
-		cflags="$cflags $USER_CFLAGS"
-	fi
-	if [ -n "$USER_CPPFLAGS" ]; then
-		cppflags="$cppflags $USER_CPPFLAGS"
-	fi
-	if [ -n "$USER_LDFLAGS" ]; then
-		ldflags="$ldflags $USER_LDFLAGS"
-	fi
-	
-	# Write build.mk
-	cat > "$BUILD_MK" << EOF
-# $BUILD_MK - Generated by configure on $timestamp
-# DO NOT EDIT - This file is automatically generated
-
-
-# libicmp Configuration
-
-USE_SYSTEM_LIBICMP = $USE_SYSTEM_LIBICMP
-BUILD_LOCAL_LIBICMP = $BUILD_LOCAL_LIBICMP
-LIBICMP_TYPE = $FINAL_LIBRARY_TYPE
-LIBICMP_DIR = $LIBICMP_DIR
-LIBICMP_PATH = $LIBICMP_PATH
-LIBICMP_DEP = $LIBICMP_DEP
-
-EOF
-
-	if [ "$BUILD_LOCAL_LIBICMP" = "yes" ]; then
-		local libicmp_cflags="-Wall -Wextra -Werror -pipe -Wpedantic -Wconversion"
-		local libicmp_cppflags="-std=c99 -I includes -D_POSIX_C_SOURCE=199309L"
-
-		libicmp_cflags="$libicmp_cflags $debug_flags"
-
-		if [ "$ENABLE_SANITIZERS" = "yes" ]; then
-			libicmp_cflags="$libicmp_cflags $sanitizer_flags"
-		fi
-
-		if [ "$ENABLE_LTO" = "yes" ]; then
-			libicmp_cflags="$libicmp_cflags $lto_flags"
-		fi
-
-		cat >> "$BUILD_MK" << EOF
-# libicmp build configuration
-LIBICMP_BUILD_STATIC = $LIBICMP_BUILD_STATIC
-LIBICMP_BUILD_SHARED = $LIBICMP_BUILD_SHARED
-LIBICMP_CC = $CC
-LIBICMP_CPPFLAGS = $libicmp_cppflags
-LIBICMP_CFLAGS = $libicmp_cflags
-LIBICMP_BUILD_FLAGS = BUILD_STATIC=\$(LIBICMP_BUILD_STATIC) BUILD_SHARED=\$(LIBICMP_BUILD_SHARED) CC=\$(LIBICMP_CC) CPPFLAGS="\$(LIBICMP_CPPFLAGS)" CFLAGS="\$(LIBICMP_CFLAGS)"
-LIBICMP_MAKEFILE = $LIBICMP_MAKEFILE
-
-EOF
-	fi
-
-	cat >> "$BUILD_MK" << EOF
-
-# Compiler Configuration
-
-CC = $CC
-CPPFLAGS = $cppflags
-CFLAGS = $cflags
-LDFLAGS = $ldflags
-
-# Individual flag components (for reference)
-DEBUG_FLAGS = $debug_flags
-SANITIZER_FLAGS = $sanitizer_flags
-LTO_FLAGS = $lto_flags
-STRICT_FLAGS = $strict_flags
-
-# Combined flags
-CFLAGS += \$(DEBUG_FLAGS) \$(SANITIZER_FLAGS) \$(LTO_FLAGS) \$(STRICT_FLAGS)
-LDFLAGS += \$(SANITIZER_FLAGS) \$(LTO_FLAGS)
-
-
-# Installation Paths
-
-PREFIX = $PREFIX
-BINDIR = $BINDIR
-LIBDIR = $LIBDIR
-INCLUDEDIR = $INCLUDEDIR
-
-
-# Test Configuration
-
-ENABLE_TESTS = $ENABLE_TESTS
-SUDO_TESTS = $SUDO_TESTS
-TEST_LDFLAGS = -lcriterion
-
-
-# Build Options
-
-ENABLE_DEBUG = $ENABLE_DEBUG
-ENABLE_SANITIZERS = $ENABLE_SANITIZERS
-ENABLE_LTO = $ENABLE_LTO
-ENABLE_STRICT = $ENABLE_STRICT
-
-
-# libicmp Installation (if built locally)
-
-INSTALL_LIBICMP = $INSTALL_LIBICMP
-LIBICMP_PREFIX = $LIBICMP_PREFIX
-
-EOF
-
-	success "Generated $BUILD_MK"
-}
-
-
-# SUMMARY
-
-
-show_summary() {
-	if [ "$QUIET" = "yes" ]; then
-		return
-	fi
-	
-	cat << EOF
-
-------------------------------------------------------------------------
-Configuration Summary for $PROJECT_NAME
-------------------------------------------------------------------------
-
-libicmp Source:          $([ "$USE_SYSTEM_LIBICMP" = "yes" ] && echo "system ($PREFIX/lib)" || echo "local ($LIBICMP_DIR/)")
-Library Type:            $FINAL_LIBRARY_TYPE
-Compiler:                $CC
-Installation Prefix:     $PREFIX
-
-Build Options:
-  Debug:                 $ENABLE_DEBUG
-  Sanitizers:            $ENABLE_SANITIZERS
-  LTO:                   $ENABLE_LTO
-  Strict:                $ENABLE_STRICT
-  Tests:                 $ENABLE_TESTS$([ "$ENABLE_TESTS" = "yes" ] && echo " ($([ "$SUDO_TESTS" = "yes" ] && echo "with sudo" || echo "without sudo"))" || echo "")
-
-EOF
-
-	if [ "$BUILD_LOCAL_LIBICMP" = "yes" ]; then
-		cat << EOF
-libicmp Installation:    $([ "$INSTALL_LIBICMP" = "yes" ] && echo "yes (to $LIBICMP_PREFIX)" || echo "no (local use only)")
-
-EOF
-	fi
-
-	cat << EOF
-Compiler Flags:
-  CPPFLAGS:              $cppflags
-  CFLAGS:                -Wall -Wextra -Werror -pipe $debug_flags $sanitizer_flags $lto_flags $strict_flags
-  LDFLAGS:               $ldflags
-
-------------------------------------------------------------------------
-
-Configuration saved to $BUILD_MK
-
-EOF
-}
-
-# MAIN
-
-main() {
-	parse_arguments "$@"
-	validate_configuration
-	check_compiler
-	decide_libicmp_source
-	determine_library_type
-	check_test_dependencies
-	generate_build_mk
-	show_summary
-	
-	exit 0
-}
-
-main "$@"
diff --git a/libcli b/libcli
new file mode 160000
index 0000000..a1bb371
--- /dev/null
+++ b/libcli
@@ -0,0 +1 @@
+Subproject commit a1bb371d3ad2a77af8888b8c7d8b645026483f76