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])
6 AM_INIT_AUTOMAKE([std-options subdir-objects nostdinc silent-rules -Wall info-in-builddir])
7 AC_CONFIG_HEADERS([config.h])
8 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.
31 AC_DEFINE(HAVE_LINUX, 1, [Linux])
35 AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
39 AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
43 AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
47 AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
51 AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
55 AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
59 AC_MSG_WARN("Unknown BSD variant, tinc might not compile or work!")
60 AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
64 AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
68 AC_DEFINE(HAVE_MINGW, 1, [MinGW])
69 LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32 -liphlpapi"
70 LDFLAGS="$LDFLAGS -static"
71 CPPFLAGS="$CPPFLAGS -DMINIUPNP_STATICLIB"
74 AC_MSG_ERROR("Unknown operating system.")
79 AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
80 [ AS_IF([test "x$enable_uml" = "xyes"],
81 [ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
90 AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
91 [ AS_IF([test "x$enable_vde" = "xyes"],
92 [ AC_CHECK_HEADERS(libvdeplug_dyn.h, [], [AC_MSG_ERROR([VDE plug header files not found.]); break])
93 AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
101 AC_ARG_ENABLE(tunemu,
102 AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
103 [ AS_IF([test "x$enable_tunemu" = "xyes"],
104 [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
113 AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
114 [ systemd=true; systemd_path="$with_systemd" ],
118 AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="/lib/systemd/system"],
119 [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
121 AC_SUBST(systemd_path, $systemd_path)
123 AM_CONDITIONAL(LINUX, test "$linux" = true)
124 AM_CONDITIONAL(BSD, test "$bsd" = true)
125 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
126 AM_CONDITIONAL(MINGW, test "$mingw" = true)
127 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
128 AM_CONDITIONAL(UML, test "$uml" = true)
129 AM_CONDITIONAL(VDE, test "$vde" = true)
130 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
131 AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
135 AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
136 AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
138 dnl Compiler hardening flags
139 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
141 AX_CFLAGS_WARN_ALL(CFLAGS)
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 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 fork gettimeofday mlockall putenv recvmmsg 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 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
195 #include <netinet/in.h>
199 dnl Operating system specific checks
202 AC_CHECK_HEADERS([linux/if_tun.h],
203 [], [AC_MSG_ERROR([Required header file missng])], [#include "$srcdir/src/have.h"]
206 *bsd*|*dragonfly*|*darwin*)
207 AC_CHECK_HEADERS([net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h],
208 [], [], [#include "$srcdir/src/have.h"]
212 AC_CHECK_FUNC(socket, [], [AC_CHECK_LIB(socket, connect)])
220 AC_ARG_ENABLE(legacy-protocol,
221 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
222 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
223 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
227 dnl These are defined in files in m4/
229 dnl AC_ARG_WITH(libgcrypt, AC_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
230 dnl AC_ARG_WITH(openssl, AC_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
237 AS_IF([test "x$enable_legacy_protocol" != "xno"],
238 [AS_IF([test -n "$with_libgcrypt"],
239 [gcrypt=true; tinc_LIBGCRYPT],
240 [openssl=true; tinc_OPENSSL])
244 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
245 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
248 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
250 dnl Check if support for jumbograms is requested
251 AC_ARG_ENABLE(jumbograms,
252 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
253 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
254 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
258 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile gui/Makefile test/Makefile systemd/Makefile])