Index: src/OFApplication.m
==================================================================
--- src/OFApplication.m
+++ src/OFApplication.m
@@ -17,25 +17,26 @@
 #include "config.h"
 
 #define OF_APPLICATION_M
 
 #include <stdlib.h>
+#include <string.h>
 
 #import "OFApplication.h"
 #import "OFString.h"
 #import "OFArray.h"
 #import "OFDictionary.h"
 #import "OFAutoreleasePool.h"
 
 #import "OFNotImplementedException.h"
 
-#include <string.h>
+#import "macros.h"
 
-#ifdef __MACH__
+#if defined(__MACH__) && !defined(OF_IOS)
 # include <crt_externs.h>
-#else
- extern char **environ;
+#elif !defined(OF_IOS)
+extern char **environ;
 #endif
 
 static OFApplication *app = nil;
 
 static void
@@ -101,22 +102,24 @@
 {
 	self = [super init];
 
 	@try {
 		OFAutoreleasePool *pool;
-		char **env;
+#if defined(__MACH__) && !defined(OF_IOS)
+		char **env = *_NSGetEnviron();
+#elif !defined(OF_IOS)
+		char **env = environ;
+#else
+		char *env;
+#endif
 
 		environment = [[OFMutableDictionary alloc] init];
 
 		atexit(atexit_handler);
-#ifdef __MACH__
-		env = *_NSGetEnviron();
-#else
-		env = environ;
-#endif
 
 		pool = [[OFAutoreleasePool alloc] init];
+#ifndef OF_IOS
 		for (; *env != NULL; env++) {
 			OFString *key;
 			OFString *value;
 			char *sep;
 
@@ -132,10 +135,38 @@
 			[environment setObject: value
 					forKey: key];
 
 			[pool releaseObjects];
 		}
+#else
+		/*
+		 * iOS does not provide environ and Apple does not allow using
+		 * _NSGetEnviron on iOS. Therefore, we just get a few common
+		 * variables from the environment which applications might
+		 * expect.
+		 */
+		if ((env = getenv("HOME")) != NULL)
+			[environment
+			    setObject: [OFString stringWithCString: env]
+			       forKey: @"HOME"];
+		if ((env = getenv("PATH")) != NULL)
+			[environment
+			    setObject: [OFString stringWithCString: env]
+			       forKey: @"PATH"];
+		if ((env = getenv("SHELL")) != NULL)
+			[environment
+			    setObject: [OFString stringWithCString: env]
+			       forKey: @"SHELL"];
+		if ((env = getenv("TMPDIR")) != NULL)
+			[environment
+			    setObject: [OFString stringWithCString: env]
+			       forKey: @"TMPDIR"];
+		if ((env = getenv("USER")) != NULL)
+			[environment
+			    setObject: [OFString stringWithCString: env]
+			       forKey: @"USER"];
+#endif
 		[pool release];
 
 		/*
 		 * Class swizzle the environment to be immutable, as we don't
 		 * need to change it anymore and expose it only as

Index: src/macros.h
==================================================================
--- src/macros.h
+++ src/macros.h
@@ -226,10 +226,18 @@
 # define of_bswap32_if_le(i) of_bswap32(i)
 # define of_bswap64_if_le(i) of_bswap64(i)
 # define of_bswap32_vec_if_be(buf, len)
 #endif
 
+/*
+ * We define it here and not in objfw-defs.h, as it would be theoretically
+ * possible to build a universal binary for Mac OS X and iOS.
+ */
+#if defined(__MACH__) && defined(__arm__)
+# define OF_IOS
+#endif
+
 #define OF_ROL(val, bits)						\
 	(((val) << ((bits) % (sizeof(val) * 8))) |			\
 	(val) >> (sizeof(val) * 8 - ((bits) % (sizeof(val) * 8))))
 
 #define OF_HASH_INIT(hash) hash = 0