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.
23 dnl Check whether to enable code coverage testing, and if so, clear the default CFLAGS.
25 AS_IF([test "x$enable_code_coverage" = "xyes" -a "x$origcflags" = "x"], [CFLAGS=""])
34 AC_DEFINE(HAVE_LINUX, 1, [Linux])
38 AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
42 AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
46 AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
50 AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
54 AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
58 AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
62 AC_MSG_WARN("Unknown BSD variant, tinc might not compile or work!")
63 AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
66 AC_MSG_ERROR("Cygwin is no longer supported. Use MinGW to build native Windows binaries.")
70 AC_DEFINE(HAVE_MINGW, 1, [MinGW])
71 LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32 -liphlpapi -lwinpthread"
72 LDFLAGS="$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$enable_vde" = "xyes"],
94 [ AC_CHECK_HEADERS(libvdeplug.h,
95 [AC_CHECK_LIB(vdeplug, vde_close,
96 [LIBS="$LIBS -lvdeplug"],
97 [AC_MSG_ERROR("VDE plug library files not found.")]
99 [AC_MSG_ERROR([VDE plug header files not found.]); break])
100 AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
108 AC_ARG_ENABLE(tunemu,
109 AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
110 [ AS_IF([test "x$enable_tunemu" = "xyes"],
111 [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
120 AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
121 [ systemd=true; systemd_path="$with_systemd" ],
125 AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="\${libdir}/systemd/system"],
126 [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
128 AC_SUBST(systemd_path, $systemd_path)
130 AM_CONDITIONAL(LINUX, test "$linux" = true)
131 AM_CONDITIONAL(BSD, test "$bsd" = true)
132 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
133 AM_CONDITIONAL(MINGW, test "$mingw" = true)
134 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
135 AM_CONDITIONAL(UML, test "$uml" = true)
136 AM_CONDITIONAL(VDE, test "$vde" = true)
137 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
138 AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
139 AM_CONDITIONAL(WITH_LEGACY_PROTOCOL, test "x$enable_legacy_protocol" != "xno")
143 AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
144 AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
146 dnl Compiler hardening flags
147 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
149 AX_CFLAGS_WARN_ALL(CFLAGS)
151 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
152 AS_IF([test "x$enable_hardening" != "xno"],
153 [AX_CHECK_COMPILE_FLAG([-D_FORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"])
154 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
155 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
158 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
159 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
160 AX_CHECK_LINK_FLAG([-lssp], [LDFLAGS="$LDFLAGS -lssp"])
163 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
164 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
167 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
168 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
169 AX_CHECK_COMPILE_FLAG([-W -Wextra -pedantic -Wreturn-type -Wold-style-definition -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wbad-function-cast -Wwrite-strings -fdiagnostics-show-option -fstrict-aliasing -Wmissing-noreturn],
170 [CPPFLAGS="$CPPFLAGS -W -Wextra -pedantic -Wreturn-type -Wold-style-definition -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wbad-function-cast -Wwrite-strings -fdiagnostics-show-option -fstrict-aliasing -Wmissing-noreturn"])
174 dnl Checks for header files.
175 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
177 AC_CHECK_HEADERS([syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h getopt.h stddef.h sys/epoll.h])
178 AC_CHECK_HEADERS([net/if.h net/if_types.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h],
179 [], [], [#include "$srcdir/src/have.h"]
181 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
182 [], [], [#include "$srcdir/src/have.h"]
184 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
185 [], [], [#include "$srcdir/src/have.h"]
188 dnl Checks for typedefs, structures, and compiler characteristics.
189 tinc_ATTRIBUTE(__malloc__)
190 tinc_ATTRIBUTE(__nonnull__)
191 tinc_ATTRIBUTE(__warn_unused_result__)
193 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], , ,
194 [#include "$srcdir/src/have.h"]
197 dnl Checks for library functions.
198 AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
199 [], [], [#include "$srcdir/src/have.h"]
202 AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
203 AM_CONDITIONAL(GETOPT, test "$getopt" = true)
205 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
206 #include <netinet/in.h>
210 dnl Operating system specific checks
213 AC_CHECK_HEADERS([linux/if_tun.h],
214 [], [AC_MSG_ERROR([Required header file missng])], [#include "$srcdir/src/have.h"]
217 *bsd*|*dragonfly*|*darwin*)
218 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],
219 [], [], [#include "$srcdir/src/have.h"]
223 AC_CHECK_FUNC(socket, [], [AC_CHECK_LIB(socket, connect)])
231 AC_ARG_ENABLE(legacy-protocol,
232 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
233 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
234 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
238 dnl These are defined in files in m4/
240 dnl AC_ARG_WITH(libgcrypt, AS_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
241 dnl AC_ARG_WITH(openssl, AS_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
249 AS_IF([test "x$enable_legacy_protocol" != "xno"],
250 [AS_IF([test -n "$with_libgcrypt"],
251 [gcrypt=true; tinc_LIBGCRYPT],
252 [openssl=true; tinc_OPENSSL])
256 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
257 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
260 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
262 dnl Check if support for jumbograms is requested
263 AC_ARG_ENABLE(jumbograms,
264 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
265 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
266 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
270 dnl Ensure runstatedir is set if we are using a version of autoconf that does not support it
271 if test "x$runstatedir" = "x"; then
272 AC_SUBST([runstatedir], ['${localstatedir}/run'])
275 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile test/Makefile test/testlib.sh systemd/Makefile bash_completion.d/Makefile])