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)
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 AX_CFLAGS_WARN_ALL(CFLAGS)
145 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
146 AS_IF([test "x$enable_hardening" != "xno"],
147 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
148 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
149 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
152 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
153 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
156 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
157 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
160 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
161 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
165 dnl Checks for header files.
166 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
168 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])
169 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],
170 [], [], [#include "$srcdir/src/have.h"]
172 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
173 [], [], [#include "$srcdir/src/have.h"]
175 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
176 [], [], [#include "$srcdir/src/have.h"]
179 dnl Checks for typedefs, structures, and compiler characteristics.
180 tinc_ATTRIBUTE(__malloc__)
181 tinc_ATTRIBUTE(__nonnull__)
182 tinc_ATTRIBUTE(__warn_unused_result__)
184 AC_CHECK_TYPES([struct ether_header, struct arphdr, struct ether_arp, struct ip, struct icmp, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
185 [#include "$srcdir/src/have.h"]
188 dnl Checks for library functions.
189 AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
190 [], [], [#include "$srcdir/src/have.h"]
193 AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
194 AM_CONDITIONAL(GETOPT, test "$getopt" = true)
196 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
197 #include <netinet/in.h>
201 dnl Operating system specific checks
204 AC_CHECK_HEADERS([linux/if_tun.h],
205 [], [AC_MSG_ERROR([Required header file missng])], [#include "$srcdir/src/have.h"]
208 *bsd*|*dragonfly*|*darwin*)
209 AC_CHECK_HEADERS([net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h],
210 [], [], [#include "$srcdir/src/have.h"]
214 AC_CHECK_FUNC(socket, [], [AC_CHECK_LIB(socket, connect)])
222 AC_ARG_ENABLE(legacy-protocol,
223 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
224 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
225 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
229 dnl These are defined in files in m4/
231 dnl AC_ARG_WITH(libgcrypt, AC_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
232 dnl AC_ARG_WITH(openssl, AC_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
239 AS_IF([test "x$enable_legacy_protocol" != "xno"],
240 [AS_IF([test -n "$with_libgcrypt"],
241 [gcrypt=true; tinc_LIBGCRYPT],
242 [openssl=true; tinc_OPENSSL])
246 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
247 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
250 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
252 dnl Check if support for jumbograms is requested
253 AC_ARG_ENABLE(jumbograms,
254 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
255 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
256 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
260 dnl Ensure runstatedir is set if we are using a version of autoconf that does not support it
261 if test "x$runstatedir" = "x"; then
262 AC_SUBST([runstatedir], ['${localstatedir}/run'])
265 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile test/Makefile test/testlib.sh systemd/Makefile bash_completion.d/Makefile])