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])
115 AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
116 [ systemd=true; systemd_path="$with_systemd" ],
120 AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="/lib/systemd/system"],
121 [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
123 AC_SUBST(systemd_path, $systemd_path)
125 AM_CONDITIONAL(LINUX, test "$linux" = true)
126 AM_CONDITIONAL(BSD, test "$bsd" = true)
127 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
128 AM_CONDITIONAL(MINGW, test "$mingw" = true)
129 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
130 AM_CONDITIONAL(UML, test "$uml" = true)
131 AM_CONDITIONAL(VDE, test "$vde" = true)
132 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
133 AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
137 AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
138 AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
140 dnl Compiler hardening flags
141 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
143 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
144 AS_IF([test "x$enable_hardening" != "xno"],
145 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
146 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
147 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
150 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
151 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
154 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
155 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
158 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
159 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
163 dnl Checks for header files.
164 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
166 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])
167 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],
168 [], [], [#include "$srcdir/src/have.h"]
170 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
171 [], [], [#include "$srcdir/src/have.h"]
173 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
174 [], [], [#include "$srcdir/src/have.h"]
177 dnl Checks for typedefs, structures, and compiler characteristics.
178 tinc_ATTRIBUTE(__malloc__)
179 tinc_ATTRIBUTE(__warn_unused_result__)
181 AC_CHECK_TYPES([struct ether_header, struct arphdr, struct ether_arp, struct ip, struct icmp, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
182 [#include "$srcdir/src/have.h"]
185 dnl Checks for library functions.
187 AC_CHECK_FUNCS([asprintf daemon fchmod flock ftime fork gettimeofday mlockall putenv random recvmmsg select strdup strsignal nanosleep unsetenv vsyslog devname fdevname],
188 [], [], [#include "$srcdir/src/have.h"]
191 AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
192 AM_CONDITIONAL(GETOPT, test "$getopt" = true)
194 dnl Support for SunOS
196 AC_CHECK_FUNC(socket, [], [
197 AC_CHECK_LIB(socket, connect)
200 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
201 #include <netinet/in.h>
207 AC_ARG_ENABLE(legacy-protocol,
208 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
209 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
210 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
214 dnl These are defined in files in m4/
216 dnl AC_ARG_WITH(libgcrypt, AC_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
217 dnl AC_ARG_WITH(openssl, AC_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
224 AS_IF([test "x$enable_legacy_protocol" != "xno"],
225 [AS_IF([test -n "$with_libgcrypt"],
226 [gcrypt=true; tinc_LIBGCRYPT],
227 [openssl=true; tinc_OPENSSL])
231 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
232 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
235 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
237 dnl Check if support for jumbograms is requested
238 AC_ARG_ENABLE(jumbograms,
239 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
240 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
241 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
245 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile gui/Makefile test/Makefile systemd/Makefile])