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 -Wall])
8 AC_CONFIG_HEADERS([config.h])
9 AC_CONFIG_MACRO_DIR([m4])
11 # Enable GNU extensions.
12 # Define this here, not in acconfig's @TOP@ section, since definitions
13 # in the latter don't make it into the configure-time tests.
15 AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
17 dnl Checks for programs.
32 AC_DEFINE(HAVE_LINUX, 1, [Linux])
36 AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
40 AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
44 AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
48 AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
52 AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
56 AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
60 AC_MSG_WARN("Unknown BSD variant, tinc might not compile or work!")
61 AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
65 AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
69 AC_DEFINE(HAVE_MINGW, 1, [MinGW])
70 LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32"
73 AC_MSG_ERROR("Unknown operating system.")
78 AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
79 [ AS_IF([test "x$enable_uml" = "xyes"],
80 [ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
89 AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
90 [ AS_IF([test "x$enable_vde" = "xyes"],
91 [ AC_CHECK_HEADERS(libvdeplug_dyn.h, [], [AC_MSG_ERROR([VDE plug header files not found.]); break])
92 AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
100 AC_ARG_ENABLE(tunemu,
101 AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
102 [ AS_IF([test "x$enable_tunemu" = "xyes"],
103 [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
111 AC_ARG_WITH(windows2000,
112 AS_HELP_STRING([--with-windows2000], [compile with support for Windows 2000. This disables support for tunneling over existing IPv6 networks.]),
113 [ AS_IF([test "x$with_windows2000" = "xyes"],
114 [AC_DEFINE(WITH_WINDOWS2000, 1, [Compile with support for Windows 2000])])
119 AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
120 [ systemd=true; systemd_path="$with_systemd" ],
124 AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="/lib/systemd/system"],
125 [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
127 AC_SUBST(systemd_path, $systemd_path)
129 AM_CONDITIONAL(LINUX, test "$linux" = true)
130 AM_CONDITIONAL(BSD, test "$bsd" = true)
131 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
132 AM_CONDITIONAL(MINGW, test "$mingw" = true)
133 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
134 AM_CONDITIONAL(UML, test "$uml" = true)
135 AM_CONDITIONAL(VDE, test "$vde" = true)
136 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
137 AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
141 AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
142 AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
144 dnl Compiler hardening flags
145 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
147 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
148 AS_IF([test "x$enable_hardening" != "xno"],
149 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
150 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"])
151 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"])
154 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
155 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
158 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
159 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
162 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
163 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
167 dnl Checks for header files.
168 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
171 AC_CHECK_HEADERS([stdbool.h syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/uio.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h])
172 AC_CHECK_HEADERS([net/if.h net/if_types.h linux/if_tun.h net/if_tun.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 time.h netpacket/packet.h],
173 [], [], [#include "$srcdir/src/have.h"]
175 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
176 [], [], [#include "$srcdir/src/have.h"]
178 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
179 [], [], [#include "$srcdir/src/have.h"]
182 dnl Checks for typedefs, structures, and compiler characteristics.
190 tinc_ATTRIBUTE(__malloc__)
191 tinc_ATTRIBUTE(__warn_unused_result__)
193 AC_CHECK_TYPES([socklen_t, struct ether_header, struct arphdr, struct ether_arp, struct in_addr, struct addrinfo, struct ip, struct icmp, struct in6_addr, struct sockaddr_in6, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
194 [#include "$srcdir/src/have.h"]
197 dnl Checks for library functions.
199 AC_CHECK_FUNCS([asprintf daemon fchmod flock ftime fork get_current_dir_name gettimeofday mlockall putenv random select strdup strerror strsignal strtol system time usleep unsetenv vsyslog writev],
200 [], [], [#include "$srcdir/src/have.h"]
203 dnl Support for SunOS
205 AC_CHECK_FUNC(socket, [], [
206 AC_CHECK_LIB(socket, connect)
208 AC_CHECK_FUNC(gethostbyname, [], [
209 AC_CHECK_LIB(nsl, gethostbyname)
212 AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo],
213 [], [], [#include "$srcdir/src/have.h"]
216 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
217 #include <netinet/in.h>
223 AC_ARG_ENABLE(legacy-protocol,
224 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
225 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
226 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
230 dnl These are defined in files in m4/
232 dnl AC_ARG_WITH(libgcrypt, AC_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
233 dnl AC_ARG_WITH(openssl, AC_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
240 AS_IF([test "x$enable_legacy_protocol" != "xno"],
241 [AS_IF([test -n "$with_libgcrypt"],
242 [gcrypt=true; tinc_LIBGCRYPT],
243 [openssl=true; tinc_OPENSSL])
247 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
248 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
251 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
253 dnl Check if support for jumbograms is requested
254 AC_ARG_ENABLE(jumbograms,
255 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
256 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
257 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
261 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile gui/Makefile test/Makefile systemd/Makefile])