@@ -44,10 +44,11 @@
 	LDFLAGS="$LDFLAGS -noixemul"
 	LIBS="$LIBS -ldebug"
 
 	enable_files="yes"	# Required for reading ENV:
 	enable_shared="no"
+	with_tls="no"
 	supports_amiga_lib="yes"
 
 	AS_IF([test x"$enable_amiga_lib" != x"no"], [
 		AC_SUBST(OBJFW_AMIGA_LIB, 'objfw${OBJFW_LIB_MAJOR}.library')
 		AC_SUBST(OBJFWRT_AMIGA_LIB,
@@ -65,10 +66,11 @@
 powerpc-*-amigaos*)
 	CPPFLAGS="$CPPFLAGS -D__USE_INLINE__"
 
 	enable_files="yes"	# Required for reading ENV:
 	enable_shared="no"
+	with_tls="no"
 
 	AC_SUBST(LIBBASES_M, libbases.m)
 	;;
 *-morphos*)
 	AS_IF([test x"$OBJCFLAGS" = x""], [OBJCFLAGS="-O2 -g"])
@@ -139,10 +141,15 @@
 	dnl also used for .S files.
 	OBJCFLAGS="$OBJCFLAGS -include inttypes.h"
 	dnl We need -latomic for GCC's atomics to work.
 	LIBS="$LIBS -latomic"
 	;;
+*-*-mint*)
+	enable_shared="no"
+	enable_threads="no"	# TODO
+	with_tls="no"
+	;;
 esac
 
 AS_IF([test x"$host_os" = x"msdosdjgpp" -a x"$build_os" = x"msdosdjgpp"], [
 	dnl Hack to make configure find these on DOS.
 	: ${AR:=ar.exe}
@@ -177,18 +184,43 @@
 
 	flags="-mrvl -mcpu=750 -meabi -mhard-float"
 	OBJCFLAGS="$OBJCFLAGS $flags"
 	OBJFW_OBJCFLAGS="$OBJFW_OBJCFLAGS $flags"
 	CPPFLAGS="$CPPFLAGS -DGEKKO -I$DEVKITPRO/libogc/include"
+	OBJFW_CPPFLAGS="$OBJFW_CPPFLAGS -DGEKKO -I\$DEVKITPRO/libogc/include"
 	LDFLAGS="$LDFLAGS -mrvl -mcpu=750 -meabi -mhard-float"
 	LIBS="$LIBS -L$DEVKITPRO/libogc/lib/wii -lfat -logc"
 	TESTS_LIBS="$TESTS_LIBS -lwiiuse -lbte"
 	enable_shared="no"
 	enable_threads="no"	# TODO
+	with_tls="no"
 
 	AC_DEFINE(OF_WII, 1, [Whether we are compiling for Wii])
-	OBJFW_CPPFLAGS="$OBJFW_CPPFLAGS -DGEKKO -I\$DEVKITPRO/libogc/include"
+	AC_SUBST(MAP_LDFLAGS, ['-Wl,-Map,$@.map'])
+])
+
+AC_ARG_WITH(wii-u,
+	AS_HELP_STRING([--with-wii-u], [build for Wii U]))
+AS_IF([test x"$with_wii_u" = x"yes"], [
+	AS_IF([test x"$DEVKITPRO" = x""], [
+		AC_MSG_ERROR([DEVKITPRO is not set! Please set DEVKITPRO.])
+	])
+
+	flags="-mcpu=750 -meabi -mhard-float"
+	OBJCFLAGS="$OBJCFLAGS $flags"
+	OBJFW_OBJCFLAGS="$OBJFW_OBJCFLAGS $flags"
+	CPPFLAGS="-isystem $DEVKITPRO/wut/include -D__WIIU__ -D__WUT__"
+	OBJFW_CPPFLAGS="$OBJFW_CPPFLAGS -isystem \$DEVKITPRO/wut/include"
+	OBJFW_CPPFLAGS="$OBJFW_CPPFLAGS -D__WIIU__ -D__WUT__"
+	LDFLAGS="-specs=$DEVKITPRO/wut/share/wut.specs"
+	LIBS="-L$DEVKITPRO/wut/lib -L$DEVKITPRO/wut/lib/stubs -lwut"
+	enable_files="no"	# TODO
+	enable_shared="no"	# TODO
+	enable_threads="no"	# TODO
+	enable_sockets="no"	# TODO
+
+	AC_DEFINE(OF_WII_U, 1, [Whether we are compiling for Wii U])
 	AC_SUBST(MAP_LDFLAGS, ['-Wl,-Map,$@.map'])
 ])
 
 AC_ARG_WITH(nds,
 	AS_HELP_STRING([--with-nds], [build for Nintendo DS]))
@@ -199,20 +231,20 @@
 
 	flags="-march=armv5te -mtune=arm946e-s -mthumb -mthumb-interwork"
 	OBJCFLAGS="$OBJCFLAGS $flags"
 	OBJFW_OBJCFLAGS="$OBJFW_OBJCFLAGS $flags"
 	CPPFLAGS="$CPPFLAGS -DARM9 -I$DEVKITPRO/libnds/include"
+	OBJFW_CPPFLAGS="$OBJFW_CPPFLAGS -DARM9 -I\$DEVKITPRO/libnds/include"
 	ASFLAGS="$ASFLAGS -march=armv5te"
 	LDFLAGS="$LDFLAGS -specs=ds_arm9.specs"
 	LIBS="$LIBS -L$DEVKITPRO/libnds/lib -lfilesystem -lfat -lnds9"
 	enable_shared="no"
 	enable_threads="no"	# TODO
 	enable_sockets="no"	# TODO
 	check_pedantic="no"
 
 	AC_DEFINE(OF_NINTENDO_DS, 1, [Whether we are compiling for Nintendo DS])
-	OBJFW_CPPFLAGS="$OBJFW_CPPFLAGS -DARM9 -I\$DEVKITPRO/libnds/include"
 	AC_SUBST(MAP_LDFLAGS, ['-Wl,-Map,$@.map'])
 ])
 
 AC_ARG_WITH(3ds,
 	AS_HELP_STRING([--with-3ds], [build for Nintendo 3DS]))
@@ -224,23 +256,48 @@
 	flags="-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft"
 	flags="$flags -mword-relocations"
 	OBJCFLAGS="$OBJCFLAGS $flags"
 	OBJFW_OBJCFLAGS="$OBJFW_OBJCFLAGS $flags"
 	CPPFLAGS="$CPPFLAGS -DARM11 -I$DEVKITPRO/libctru/include"
+	OBJFW_CPPFLAGS="$OBJFW_CPPFLAGS -DARM11 -I\$DEVKITPRO/libctru/include"
 	ASFLAGS="$ASFLAGS -march=armv6k"
 	LDFLAGS="$LDFLAGS -specs=3dsx.specs -march=armv6k -mtune=mpcore"
 	LDFLAGS="$LDFLAGS -mfloat-abi=hard -mtp=soft -mword-relocations"
 	LIBS="$LIBS -L$DEVKITPRO/libctru/lib -lctru"
 	enable_shared="no"
 	enable_threads="no"	# TODO
+	with_tls="no"
 	check_pedantic="no"
 
 	AC_DEFINE(OF_NINTENDO_3DS, 1,
 		[Whether we are compiling for Nintendo 3DS])
-	OBJFW_CPPFLAGS="$OBJFW_CPPFLAGS -DARM11 -I\$DEVKITPRO/libctru/include"
 	AC_SUBST(MAP_LDFLAGS, ['-Wl,-Map,$@.map'])
 ])
+
+AC_ARG_WITH(nintendo-switch,
+	AS_HELP_STRING([--with-nintendo-switch], [build for Nintendo Switch]))
+AS_IF([test x"$with_nintendo_switch" = x"yes"], [
+	AS_IF([test x"$DEVKITPRO" = x""], [
+		AC_MSG_ERROR([DEVKITPRO is not set! Please set DEVKITPRO.])
+	])
+
+	flags="-march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE"
+	OBJCFLAGS="$OBJCFLAGS $flags"
+	OBJFW_OBJCFLAGS="$OBJFW_OBJCFLAGS $flags"
+	CPPFLAGS="$CPPFLAGS -D__SWITCH__ -I$DEVKITPRO/libnx/include"
+	OBJFW_CPPFLAGS="$OBJFW_CPPFLAGS -D__SWITCH__ -I$DEVKITPRO/libnx/include"
+	ASFLAGS="$ASFLAGS $flags"
+	LDFLAGS="$LDFLAGS -specs=$DEVKITPRO/libnx/switch.specs $flags"
+	LIBS="$LIBS -L$DEVKITPRO/libnx/lib -lnx"
+	enable_shared="no"
+	enable_threads="yes"
+	enable_sockets="no"	# TODO
+	check_pedantic="no"
+
+	AC_DEFINE(OF_NINTENDO_SWITCH, 1,
+		[Whether we are compiling for Nintendo Switch])
+])
 
 CPP="$OBJCPP"
 CPPFLAGS="$CPPFLAGS $OBJCPPFLAGS -DOF_COMPILING_OBJFW"
 flags="-fexceptions -fobjc-exceptions -funwind-tables"
 flags="$flags -fconstant-string-class=OFConstantString"
@@ -434,11 +491,11 @@
 AC_MSG_CHECKING(whether we need -D_GNU_SOURCE)
 AC_EGREP_CPP(egrep_cpp_yes, [
 	#include <stdlib.h>
 
 	#if defined(__GLIBC__) || defined(__MINGW32__) || \
-	    defined(__NEWLIB__) || defined(__MORPHOS__)
+	    defined(__NEWLIB__) || defined(__MORPHOS__) || defined(__MINT__)
 	egrep_cpp_yes
 	#endif
 ], [
 	AC_MSG_RESULT(yes)
 	CPPFLAGS="-D_GNU_SOURCE $CPPFLAGS"
@@ -648,10 +705,13 @@
 	OBJCFLAGS="$old_OBJCFLAGS"
 	;;
 esac
 
 case "$host_os" in
+mint*)
+	dnl _Unwind_Backtrace crashes on MiNT
+	;;
 hpux*)
 	dnl _Unwind_Backtrace() returns complete garbage on HP-UX.
 	;;
 *)
 	AC_CHECK_FUNCS(_Unwind_Backtrace)
@@ -837,10 +897,14 @@
 
 AC_CHECK_FUNCS(strtof truncf)
 
 AC_CHECK_FUNC(asprintf, [
 	case "$host" in
+	*-*-mint*)
+		dnl asprintf is not in headers
+		have_asprintf="no"
+		;;
 	*-*-mingw*)
 		dnl asprintf from MinGW is broken on older Windows versions
 		have_asprintf="no"
 		;;
 	*-psp-*)
@@ -1351,10 +1415,13 @@
 	AC_CHECK_HEADER(netinet/tcp.h, [
 		AC_DEFINE(OF_HAVE_NETINET_TCP_H, 1,
 			[Whether we have netinet/tcp.h])
 	])
 	AC_CHECK_HEADERS([arpa/inet.h netdb.h])
+	AC_CHECK_HEADER(sys/un.h, [
+		AC_DEFINE(OF_HAVE_SYS_UN_H, 1, [Whether we have sys/un.h])
+	])
 	AC_CHECK_HEADER(netipx/ipx.h, [
 		AC_DEFINE(OF_HAVE_NETIPX_IPX_H, 1,
 			[Whether we have netipx/ipx.h])
 	])
 
@@ -1407,10 +1474,44 @@
 		# endif
 		# include <windows.h>
 		# include <ws2tcpip.h>
 		#endif
 	])
+
+	AC_CHECK_HEADERS(afunix.h, [
+		AC_DEFINE(OF_HAVE_AFUNIX_H, 1, [Whether we have afunix.h])
+	], [], [
+		#ifdef _WIN32
+		# include <winsock2.h>
+		#endif
+	])
+	AC_CHECK_MEMBER(struct sockaddr_un.sun_path, [
+		AC_DEFINE(OF_HAVE_UNIX_SOCKETS, 1,
+			[Whether we have UNIX sockets])
+		AC_SUBST(USE_SRCS_UNIX_SOCKETS, '${SRCS_UNIX_SOCKETS}')
+	], [], [
+		#ifdef OF_HAVE_SYS_TYPES_H
+		# include <sys/types.h>
+		#endif
+		#ifdef OF_HAVE_SYS_UN_H
+		# include <sys/un.h>
+		#endif
+		#ifdef _WIN32
+		# include <winsock2.h>
+		#endif
+		#ifdef HAVE_AFUNIX_H
+		# include <afunix.h>
+		#endif
+
+		#ifdef __morphos__
+		# error MorphOS has the struct but does not support it
+		#endif
+
+		#ifdef __MINT__
+		# error Gives invalid argument at runtime
+		#endif
+	])
 
 	AC_CHECK_MEMBER(struct sockaddr_ipx.sipx_network, [], [
 		AC_CHECK_MEMBER(struct sockaddr_ipx.sa_netnum, [], [], [
 			#ifdef _WIN32
 			typedef int BOOL;
@@ -1524,18 +1625,124 @@
 			AC_SUBST(OF_SELECT_KERNEL_EVENT_OBSERVER_M,
 				"OFSelectKernelEventObserver.m")
 		])
 		;;
 	esac
+
+	AC_ARG_WITH(tls,
+		AS_HELP_STRING([--with-tls], [
+			enable TLS support using the specified library
+			(yes, openssl, gnutls, securetransport or no)]))
+	AS_IF([test x"$with_tls" = x""], [with_tls="yes"])
+	tls_support="no"
+
+	AS_IF([test x"$with_tls" = x"securetransport" \
+		-o x"$with_tls" = x"yes"], [
+		AC_CHECK_HEADERS(Security/SecureTransport.h, [
+			old_LIBS="$LIBS"
+			LIBS="-framework Security -framework Foundation $LIBS"
+
+			AC_CHECK_FUNC(SSLHandshake, [
+				AC_DEFINE(HAVE_SECURE_TRANSPORT, 1,
+					[Whether we have Secure Transport])
+
+				tls_support="Secure Transport"
+				TLS_LIBS="-framework Foundation $TLS_LIBS"
+				TLS_LIBS="-framework Security $TLS_LIBS"
+
+				AC_SUBST(OF_SECURE_TRANSPORT_TLS_STREAM_M,
+					"OFSecureTransportTLSStream.m")
+
+				AC_CHECK_FUNCS(SSLCreateContext)
+			], [])
+
+			LIBS="$old_LIBS"
+		])
+	])
+
+	AS_IF([test x"$with_tls" = x"openssl" \
+		-o \( x"$with_tls" = x"yes" -a x"$tls_support" = x"no" \)], [
+		case "$host_os" in
+		morphos*)
+			ssl="ssl_shared"
+			crypto="crypto_shared"
+			;;
+		*)
+			ssl="ssl"
+			crypto="crypto"
+			;;
+		esac
+
+		AC_CHECK_LIB($ssl, SSL_set1_host, [
+			AC_CHECK_HEADER(openssl/ssl.h, [
+				AC_DEFINE(HAVE_OPENSSL, 1,
+					[Whether we have OpenSSL])
+
+				tls_support="OpenSSL"
+				TLS_LIBS="-l$ssl -l$crypto $TLS_LIBS"
+
+				AC_SUBST(OF_OPENSSL_TLS_STREAM_M,
+					"OFOpenSSLTLSStream.m")
+			])
+		], [], [-l$crypto])
+	])
+
+	AS_IF([test x"$with_tls" = x"gnutls" \
+		-o \( x"$with_tls" = x"yes" -a x"$tls_support" = x"no" \)], [
+		PKG_CHECK_MODULES(gnutls, [gnutls >= 3.5.0], [
+			AC_DEFINE(HAVE_GNUTLS, 1, [Whether we have GnuTLS])
+
+			tls_support="GnuTLS"
+			TLS_CPPFLAGS="$gnutls_CFLAGS $TLS_CPPFLAGS"
+			TLS_LIBS="$gnutls_LIBS $TLS_LIBS"
+
+			AC_SUBST(OF_GNUTLS_TLS_STREAM_M, "OFGnuTLSTLSStream.m")
+		], [
+			dnl Disable default action-if-not-found, which exits
+			dnl configure with an error.
+			:
+		])
+	])
+
+	AS_IF([test x"$tls_support" != x"no"], [
+		AC_SUBST(TLS, "tls")
+		AC_SUBST(TLS_CPPFLAGS)
+		AC_SUBST(TLS_LIBS)
+		AC_DEFINE(HAVE_TLS_SUPPORT, 1,
+			[Whether we have an implementation for TLS])
+		AC_CONFIG_FILES(src/tls/Info.plist)
+
+		OFHTTP_LIBS="-lobjfwtls $TLS_LIBS $OFHTTP_LIBS"
+
+		AS_IF([test x"$enable_shared" != x"no"], [
+			AC_SUBST(OBJFWTLS_SHARED_LIB,
+				"${LIB_PREFIX}objfwtls${LIB_SUFFIX}")
+		])
+		AS_IF([test x"$enable_static" = x"yes" \
+		    -o x"$enable_shared" = x"no"], [
+			AC_SUBST(OBJFWTLS_STATIC_LIB, "libobjfwtls.a")
+		])
+		AS_IF([test x"$build_framework" = x"yes"], [
+			AC_SUBST(OBJFWTLS_FRAMEWORK, "ObjFWTLS.framework")
+		])
+	])
+
+	AS_IF([test x"$with_tls" != x"no" -a x"$tls_support" = x"no"], [
+		AC_MSG_ERROR(m4_normalize([
+			No TLS implementation was found. Please install OpenSSL,
+			GnuTLS or use --without-tls.
+		]))
+	])
 
 	AS_IF([test x"$enable_threads" != x"no"], [
 		AC_SUBST(OF_HTTP_CLIENT_TESTS_M, "OFHTTPClientTests.m")
 	])
 
 	AC_SUBST(OFDNS, "ofdns")
 	AS_IF([test x"$enable_files" != x"no"], [
 		AC_SUBST(OFHTTP, "ofhttp")
+		AC_SUBST(OFHTTP_LIBS)
 	])
 ])
 
 AC_DEFUN([CHECK_BUILTIN_BSWAP], [
 	AC_MSG_CHECKING(for __builtin_bswap$1)
@@ -1571,10 +1778,13 @@
 		egrep_cpp_yes
 		#endif
 	], [
 		AC_MSG_RESULT(yes)
 		have_subprocesses="yes"
+
+		AC_CHECK_FUNCS(posix_spawnp)
+		AC_CHECK_HEADERS(spawn.h)
 	], [
 		AC_MSG_RESULT(no)
 		have_subprocesses="no"
 	])
 	;;