1 dnl Process this file with autoconf to produce a configure script.
4 AC_INIT([tinc], m4_esyscmd_s((git describe || echo UNKNOWN) | sed 's/release-//'))
5 AC_CONFIG_SRCDIR([src/tincd.c])
7 AM_INIT_AUTOMAKE([std-options subdir-objects nostdinc silent-rules -Wall])
8 AC_CONFIG_HEADERS([config.h])
9 AC_CONFIG_MACRO_DIR([m4])
10 AM_SILENT_RULES([yes])
12 # Enable GNU extensions.
13 # Define this here, not in acconfig's @TOP@ section, since definitions
14 # in the latter don't make it into the configure-time tests.
16 AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
18 dnl Checks for programs.
33 AC_DEFINE(HAVE_LINUX, 1, [Linux])
37 AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
41 AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
45 AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
49 AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
53 AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
57 AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
61 AC_MSG_WARN("Unknown BSD variant, tinc might not compile or work!")
62 AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
66 AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
70 AC_DEFINE(HAVE_MINGW, 1, [MinGW])
71 LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32 -liphlpapi"
72 LDFLAGS="$LDFLAGS -static"
73 CPPFLAGS="$CPPFLAGS -DMINIUPNP_STATICLIB"
76 AC_MSG_ERROR("Unknown operating system.")
81 AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
82 [ AS_IF([test "x$enable_uml" = "xyes"],
83 [ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
92 AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
93 [ AS_IF([test "x$enable_vde" = "xyes"],
94 [ AC_CHECK_HEADERS(libvdeplug_dyn.h, [], [AC_MSG_ERROR([VDE plug header files not found.]); break])
95 AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
103 AC_ARG_ENABLE(tunemu,
104 AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
105 [ AS_IF([test "x$enable_tunemu" = "xyes"],
106 [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
114 AC_ARG_WITH(windows2000,
115 AS_HELP_STRING([--with-windows2000], [compile with support for Windows 2000. This disables support for tunneling over existing IPv6 networks.]),
116 [ AS_IF([test "x$with_windows2000" = "xyes"],
117 [AC_DEFINE(WITH_WINDOWS2000, 1, [Compile with support for Windows 2000])])
122 AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
123 [ systemd=true; systemd_path="$with_systemd" ],
127 AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="/lib/systemd/system"],
128 [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
130 AC_SUBST(systemd_path, $systemd_path)
132 AM_CONDITIONAL(LINUX, test "$linux" = true)
133 AM_CONDITIONAL(BSD, test "$bsd" = true)
134 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
135 AM_CONDITIONAL(MINGW, test "$mingw" = true)
136 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
137 AM_CONDITIONAL(UML, test "$uml" = true)
138 AM_CONDITIONAL(VDE, test "$vde" = true)
139 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
140 AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
144 AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
145 AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
147 dnl Compiler hardening flags
148 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
150 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
151 AS_IF([test "x$enable_hardening" != "xno"],
152 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
153 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
154 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
157 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
158 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
161 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
162 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
165 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
166 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
170 dnl Checks for header files.
171 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
173 AC_CHECK_HEADERS([syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h getopt.h])
174 AC_CHECK_HEADERS([net/if.h net/if_types.h linux/if_tun.h net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h],
175 [], [], [#include "$srcdir/src/have.h"]
177 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
178 [], [], [#include "$srcdir/src/have.h"]
180 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
181 [], [], [#include "$srcdir/src/have.h"]
184 dnl Checks for typedefs, structures, and compiler characteristics.
185 tinc_ATTRIBUTE(__malloc__)
186 tinc_ATTRIBUTE(__warn_unused_result__)
188 AC_CHECK_TYPES([socklen_t, struct ether_header, struct arphdr, struct ether_arp, struct in_addr, struct addrinfo, struct ip, struct icmp, struct in6_addr, struct sockaddr_in6, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
189 [#include "$srcdir/src/have.h"]
192 dnl Checks for library functions.
194 AC_CHECK_FUNCS([asprintf daemon fchmod flock ftime fork gettimeofday mlockall putenv random recvmmsg select strdup strsignal nanosleep unsetenv vsyslog devname fdevname],
195 [], [], [#include "$srcdir/src/have.h"]
198 AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
199 AM_CONDITIONAL(GETOPT, test "$getopt" = true)
201 dnl Support for SunOS
203 AC_CHECK_FUNC(socket, [], [
204 AC_CHECK_LIB(socket, connect)
206 AC_CHECK_FUNC(gethostbyname, [], [
207 AC_CHECK_LIB(nsl, gethostbyname)
210 AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo],
211 [], [], [#include "$srcdir/src/have.h"]
214 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
215 #include <netinet/in.h>
221 AC_ARG_ENABLE(legacy-protocol,
222 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
223 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
224 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
228 dnl These are defined in files in m4/
230 dnl AC_ARG_WITH(libgcrypt, AC_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
231 dnl AC_ARG_WITH(openssl, AC_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
238 AS_IF([test "x$enable_legacy_protocol" != "xno"],
239 [AS_IF([test -n "$with_libgcrypt"],
240 [gcrypt=true; tinc_LIBGCRYPT],
241 [openssl=true; tinc_OPENSSL])
245 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
246 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
249 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
251 dnl Check if support for jumbograms is requested
252 AC_ARG_ENABLE(jumbograms,
253 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
254 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
255 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
259 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile gui/Makefile test/Makefile systemd/Makefile])