1 dnl Process this file with autoconf to produce a configure script.
6 AC_INIT([tinc], m4_esyscmd_s((git describe || echo UNKNOWN) | sed 's/release-//'))
7 AC_CONFIG_SRCDIR([src/tincd.c])
8 AM_INIT_AUTOMAKE([std-options subdir-objects nostdinc silent-rules -Wall])
9 AC_CONFIG_HEADERS([config.h])
10 AC_CONFIG_MACRO_DIR([m4])
11 AM_SILENT_RULES([yes])
13 AC_USE_SYSTEM_EXTENSIONS
15 dnl Checks for programs.
22 dnl Check whether to enable code coverage testing, and if so, clear the default CFLAGS.
24 AS_IF([test "x$enable_code_coverage" = "xyes" -a "x$origcflags" = "x"], [CFLAGS=""])
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])
65 AC_MSG_ERROR("Cygwin is no longer supported. Use MinGW to build native Windows binaries.")
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$enable_vde" = "xyes"],
93 [ AC_CHECK_HEADERS(libvdeplug_dyn.h, [], [AC_MSG_ERROR([VDE plug header files not found.]); break])
94 AC_CHECK_LIB(dl, dlopen, [LIBS="$LIBS -ldl"], [AC_MSG_ERROR([VDE plug depends on libdl.]); 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$with_systemd" = "xyes"], [systemd_path="\${libdir}/systemd/system"],
121 [AS_IF([test "x$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)
134 AM_CONDITIONAL(WITH_LEGACY_PROTOCOL, test "x$enable_legacy_protocol" != "xno")
138 AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
139 AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
141 dnl Compiler hardening flags
142 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
144 AX_CFLAGS_WARN_ALL(CFLAGS)
146 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
147 AS_IF([test "x$enable_hardening" != "xno"],
148 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
149 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
150 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
153 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
154 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
157 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
158 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
161 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
162 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
166 dnl Checks for header files.
167 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
169 AC_CHECK_HEADERS([syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h getopt.h stddef.h])
170 AC_CHECK_HEADERS([net/if.h net/if_types.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h],
171 [], [], [#include "$srcdir/src/have.h"]
173 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
174 [], [], [#include "$srcdir/src/have.h"]
176 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
177 [], [], [#include "$srcdir/src/have.h"]
180 dnl Checks for typedefs, structures, and compiler characteristics.
181 tinc_ATTRIBUTE(__malloc__)
182 tinc_ATTRIBUTE(__nonnull__)
183 tinc_ATTRIBUTE(__warn_unused_result__)
185 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], , ,
186 [#include "$srcdir/src/have.h"]
189 dnl Checks for library functions.
190 AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
191 [], [], [#include "$srcdir/src/have.h"]
194 AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
195 AM_CONDITIONAL(GETOPT, test "$getopt" = true)
197 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
198 #include <netinet/in.h>
202 dnl Operating system specific checks
205 AC_CHECK_HEADERS([linux/if_tun.h],
206 [], [AC_MSG_ERROR([Required header file missng])], [#include "$srcdir/src/have.h"]
209 *bsd*|*dragonfly*|*darwin*)
210 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],
211 [], [], [#include "$srcdir/src/have.h"]
215 AC_CHECK_FUNC(socket, [], [AC_CHECK_LIB(socket, connect)])
223 AC_ARG_ENABLE(legacy-protocol,
224 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
225 [ AS_IF([test "x$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])], [])
241 AS_IF([test "x$enable_legacy_protocol" != "xno"],
242 [AS_IF([test -n "$with_libgcrypt"],
243 [gcrypt=true; tinc_LIBGCRYPT],
244 [openssl=true; tinc_OPENSSL])
248 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
249 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
252 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
254 dnl Check if support for jumbograms is requested
255 AC_ARG_ENABLE(jumbograms,
256 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
257 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
258 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
262 dnl Ensure runstatedir is set if we are using a version of autoconf that does not support it
263 if test "x$runstatedir" = "x"; then
264 AC_SUBST([runstatedir], ['${localstatedir}/run'])
267 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile test/Makefile test/testlib.sh systemd/Makefile bash_completion.d/Makefile])