diff --git a/CMakeLists.txt b/CMakeLists.txt
index 236b972..65cd2ad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,7 @@
 cmake_minimum_required(VERSION 3.12)
 
+include(CheckIncludeFile)
+
 option(PROXYRES_CURL "Enable support for downloading PAC scripts using curl." OFF)
 option(PROXYRES_EXECUTE "Enable support for PAC script execution." ON)
 
@@ -187,6 +189,13 @@ target_include_directories(proxyres PRIVATE
 target_include_directories(proxyres PUBLIC
     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>)
 
+if(NOT WIN32)
+    check_include_file("net/if_arp.h" HAVE_NET_IF_ARP_H)
+    if(HAVE_NET_IF_ARP_H)
+        target_compile_definitions(proxyres PRIVATE HAVE_NET_IF_ARP_H)
+    endif()
+endif()
+
 if(PROXYRES_CURL AND (PROXYRES_EXECUTE OR PROXYRES_BUILD_CLI))
     if(NOT TARGET CURL::libcurl)
         include(FetchContent)
diff --git a/config_mac.c b/config_mac.c
index d1362c6..c09839d 100644
--- a/config_mac.c
+++ b/config_mac.c
@@ -4,6 +4,7 @@
 
 #include <CoreFoundation/CoreFoundation.h>
 #include <CFNetwork/CFNetwork.h>
+#include <TargetConditionals.h>
 
 #include "config.h"
 #include "config_i.h"
@@ -20,8 +21,8 @@ static bool get_cf_dictionary_bool(CFDictionaryRef dictionary, CFStringRef key)
 }
 
 bool proxy_config_mac_get_auto_discover(void) {
+#if !TARGET_OS_IPHONE
     bool auto_discover = false;
-
     CFDictionaryRef proxy_settings = CFNetworkCopySystemProxySettings();
     if (!proxy_settings)
         return false;
@@ -32,6 +33,9 @@ bool proxy_config_mac_get_auto_discover(void) {
 
     CFRelease(proxy_settings);
     return auto_discover;
+#else
+    return false;
+#endif
 }
 
 char *proxy_config_mac_get_auto_config_url(void) {
@@ -76,6 +80,7 @@ char *proxy_config_mac_get_proxy(const char *scheme) {
     CFStringRef host_index = kCFNetworkProxiesHTTPProxy;
     CFStringRef port_index = kCFNetworkProxiesHTTPPort;
 
+#if !TARGET_OS_IPHONE
     if (strncasecmp(scheme, "https", 5) == 0) {
         enable_index = kCFNetworkProxiesHTTPSEnable;
         host_index = kCFNetworkProxiesHTTPSProxy;
@@ -93,6 +98,7 @@ char *proxy_config_mac_get_proxy(const char *scheme) {
         host_index = kCFNetworkProxiesRTSPProxy;
         port_index = kCFNetworkProxiesRTSPPort;
     }
+#endif
 
     CFDictionaryRef proxy_settings = CFNetworkCopySystemProxySettings();
     if (!proxy_settings)
@@ -147,16 +153,21 @@ char *proxy_config_mac_get_bypass_list(void) {
         return NULL;
 
     // Get whether to exclude simple hostnames
-    bool exclude_simple_hostnames = get_cf_dictionary_bool(proxy_settings, kCFNetworkProxiesExcludeSimpleHostnames);
+    bool exclude_simple_hostnames = false;
+#if !TARGET_OS_IPHONE
+    exclude_simple_hostnames = get_cf_dictionary_bool(proxy_settings, kCFNetworkProxiesExcludeSimpleHostnames);
     if (exclude_simple_hostnames)
         bypass_list_count++;
-
+#endif
     // Get exception list
-    CFArrayRef exceptions_list = CFDictionaryGetValue(proxy_settings, kCFNetworkProxiesExceptionsList);
+    CFArrayRef exceptions_list = NULL;
+#if !TARGET_OS_IPHONE
+    exceptions_list = CFDictionaryGetValue(proxy_settings, kCFNetworkProxiesExceptionsList);
     if (exceptions_list) {
         exception_count = CFArrayGetCount(exceptions_list);
         bypass_list_count += exception_count;
     }
+#endif
 
     if (!bypass_list_count)
         goto bypass_list_error;
diff --git a/net_adapter_linux.c b/net_adapter_linux.c
index 215405c..57f8ccb 100644
--- a/net_adapter_linux.c
+++ b/net_adapter_linux.c
@@ -10,7 +10,12 @@
 #include <unistd.h>
 #include <ifaddrs.h>
 #include <net/if.h>
-#include <net/if_arp.h>
+#ifdef HAVE_NET_IF_ARP_H
+#  include <net/if_arp.h>
+#else
+#  define ARPHRD_ETHER   1  // Ethernet hardware format
+#  define ARPHRD_IEEE802 6  // IEEE 802.2 Ethernet/TR/TB
+#endif
 #include <sys/ioctl.h>
 
 #include "log.h"
diff --git a/net_adapter_mac.c b/net_adapter_mac.c
index e54347b..c1bc676 100644
--- a/net_adapter_mac.c
+++ b/net_adapter_mac.c
@@ -7,7 +7,11 @@
 #include <arpa/inet.h>
 #include <ifaddrs.h>
 #include <net/if.h>
-#include <net/if_arp.h>
+#ifdef HAVE_NET_IF_ARP_H
+#  include <net/if_arp.h>
+#else
+#  define ARPHRD_ETHER 1  // Ethernet hardware format
+#endif
 #include <net/if_dl.h>
 #include <sys/sysctl.h>
 
diff --git a/wpad_dhcp_mac.c b/wpad_dhcp_mac.c
index 8bc01f1..21471ef 100644
--- a/wpad_dhcp_mac.c
+++ b/wpad_dhcp_mac.c
@@ -5,10 +5,12 @@
 #include <CoreFoundation/CoreFoundation.h>
 #include <SystemConfiguration/SystemConfiguration.h>
 #include <SystemConfiguration/SCDynamicStoreCopyDHCPInfo.h>
+#include <TargetConditionals.h>
 
 #include "net_adapter.h"
 
 char *wpad_dhcp_adapter_mac(uint8_t bind_ip[4], net_adapter_s *adapter, int32_t timeout_sec) {
+#if !TARGET_OS_IPHONE
     CFDictionaryRef dhcp_info = NULL;
     CFDataRef dhcp_wpad_url = NULL;
     char *wpad = NULL;
@@ -24,4 +26,10 @@ char *wpad_dhcp_adapter_mac(uint8_t bind_ip[4], net_adapter_s *adapter, int32_t
         wpad = strdup((const char *)CFDataGetBytePtr(dhcp_wpad_url));
     CFRelease(dhcp_info);
     return wpad;
+#else
+    UNUSED(bind_ip);
+    UNUSED(adapter);
+    UNUSED(timeout_sec);
+    return NULL;
+#endif
 }