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 -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="$LIBS -lws2_32 -lgdi32 -lcrypt32 -liphlpapi"
71 LDFLAGS="$LDFLAGS -static"
72 CPPFLAGS="$CPPFLAGS -DMINIUPNP_STATICLIB"
75 AC_MSG_ERROR("Unknown operating system.")
80 AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
81 [ AS_IF([test "x$enable_uml" = "xyes"],
82 [ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
91 AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
92 [ AS_IF([test "x$enable_vde" = "xyes"],
93 [ AC_CHECK_HEADERS(libvdeplug_dyn.h, [], [AC_MSG_ERROR([VDE plug header files not found.]); break])
94 AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
102 AC_ARG_ENABLE(tunemu,
103 AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
104 [ AS_IF([test "x$enable_tunemu" = "xyes"],
105 [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
113 AC_ARG_WITH(windows2000,
114 AS_HELP_STRING([--with-windows2000], [compile with support for Windows 2000. This disables support for tunneling over existing IPv6 networks.]),
115 [ AS_IF([test "x$with_windows2000" = "xyes"],
116 [AC_DEFINE(WITH_WINDOWS2000, 1, [Compile with support for Windows 2000])])
121 AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
122 [ systemd=true; systemd_path="$with_systemd" ],
126 AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="/lib/systemd/system"],
127 [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
129 AC_SUBST(systemd_path, $systemd_path)
131 AM_CONDITIONAL(LINUX, test "$linux" = true)
132 AM_CONDITIONAL(BSD, test "$bsd" = true)
133 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
134 AM_CONDITIONAL(MINGW, test "$mingw" = true)
135 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
136 AM_CONDITIONAL(UML, test "$uml" = true)
137 AM_CONDITIONAL(VDE, test "$vde" = true)
138 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
139 AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
143 AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
144 AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
146 dnl Compiler hardening flags
147 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
149 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
150 AS_IF([test "x$enable_hardening" != "xno"],
151 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
152 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
153 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
156 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
157 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
160 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
161 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
164 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
165 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
169 dnl Checks for header files.
170 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([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])
174 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],
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 "$srcdir/src/have.h"]
184 dnl Checks for typedefs, structures, and compiler characteristics.
192 tinc_ATTRIBUTE(__malloc__)
193 tinc_ATTRIBUTE(__warn_unused_result__)
195 AC_CHECK_TYPES([socklen_t, struct ether_header, struct arphdr, struct ether_arp, struct in_addr, struct addrinfo, struct ip, struct icmp, struct in6_addr, struct sockaddr_in6, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
196 [#include "$srcdir/src/have.h"]
199 dnl Checks for library functions.
201 AC_CHECK_FUNCS([asprintf daemon fchmod flock ftime fork get_current_dir_name gettimeofday mlockall putenv random recvmmsg select strdup strerror strsignal strtol system time usleep unsetenv vsyslog writev],
202 [], [], [#include "$srcdir/src/have.h"]
205 dnl Support for SunOS
207 AC_CHECK_FUNC(socket, [], [
208 AC_CHECK_LIB(socket, connect)
210 AC_CHECK_FUNC(gethostbyname, [], [
211 AC_CHECK_LIB(nsl, gethostbyname)
214 AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo],
215 [], [], [#include "$srcdir/src/have.h"]
218 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
219 #include <netinet/in.h>
225 AC_ARG_ENABLE(legacy-protocol,
226 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
227 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
228 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
232 dnl These are defined in files in m4/
234 dnl AC_ARG_WITH(libgcrypt, AC_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
235 dnl AC_ARG_WITH(openssl, AC_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
242 AS_IF([test "x$enable_legacy_protocol" != "xno"],
243 [AS_IF([test -n "$with_libgcrypt"],
244 [gcrypt=true; tinc_LIBGCRYPT],
245 [openssl=true; tinc_OPENSSL])
249 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
250 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
253 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
255 dnl Check if support for jumbograms is requested
256 AC_ARG_ENABLE(jumbograms,
257 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
258 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
259 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
263 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile gui/Makefile test/Makefile systemd/Makefile])