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 # Enable GNU extensions.
14 # Define this here, not in acconfig's @TOP@ section, since definitions
15 # in the latter don't make it into the configure-time tests.
17 AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
19 dnl Checks for programs.
25 dnl Check whether to enable code coverage testing, and if so, clear the default CFLAGS.
27 AS_IF([test "x$enable_code_coverage" = "xyes" -a "x$origcflags" = "x"], [CFLAGS=""])
36 AC_DEFINE(HAVE_LINUX, 1, [Linux])
40 AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
44 AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
48 AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
52 AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
56 AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
60 AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
64 AC_MSG_WARN("Unknown BSD variant, tinc might not compile or work!")
65 AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
68 AC_MSG_ERROR("Cygwin is no longer supported. Use MinGW to build native Windows binaries.")
72 AC_DEFINE(HAVE_MINGW, 1, [MinGW])
73 LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32 -liphlpapi"
74 LDFLAGS="$LDFLAGS -static"
75 CPPFLAGS="$CPPFLAGS -DMINIUPNP_STATICLIB"
78 AC_MSG_ERROR("Unknown operating system.")
83 AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
84 [ AS_IF([test "x$enable_uml" = "xyes"],
85 [ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
94 AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
95 [ AS_IF([test "x$enable_vde" = "xyes"],
96 [ AC_CHECK_HEADERS(libvdeplug_dyn.h, [], [AC_MSG_ERROR([VDE plug header files not found.]); break])
97 AC_CHECK_LIB(dl, dlopen, [LIBS="$LIBS -ldl"], [AC_MSG_ERROR([VDE plug depends on libdl.]); break])
98 AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
106 AC_ARG_ENABLE(tunemu,
107 AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
108 [ AS_IF([test "x$enable_tunemu" = "xyes"],
109 [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
118 AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
119 [ systemd=true; systemd_path="$with_systemd" ],
123 AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="\${libdir}/systemd/system"],
124 [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
126 AC_SUBST(systemd_path, $systemd_path)
128 AM_CONDITIONAL(LINUX, test "$linux" = true)
129 AM_CONDITIONAL(BSD, test "$bsd" = true)
130 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
131 AM_CONDITIONAL(MINGW, test "$mingw" = true)
132 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
133 AM_CONDITIONAL(UML, test "$uml" = true)
134 AM_CONDITIONAL(VDE, test "$vde" = true)
135 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
136 AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
140 AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
141 AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
143 dnl Compiler hardening flags
144 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
146 AX_CFLAGS_WARN_ALL(CFLAGS)
148 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
149 AS_IF([test "x$enable_hardening" != "xno"],
150 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
151 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
152 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
155 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
156 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
159 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
160 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
163 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
164 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
168 dnl Checks for header files.
169 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
171 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])
172 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],
173 [], [], [#include "$srcdir/src/have.h"]
175 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
176 [], [], [#include "$srcdir/src/have.h"]
178 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
179 [], [], [#include "$srcdir/src/have.h"]
182 dnl Checks for typedefs, structures, and compiler characteristics.
183 tinc_ATTRIBUTE(__malloc__)
184 tinc_ATTRIBUTE(__nonnull__)
185 tinc_ATTRIBUTE(__warn_unused_result__)
187 AC_CHECK_TYPES([struct ether_header, struct arphdr, struct ether_arp, struct ip, struct icmp, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
188 [#include "$srcdir/src/have.h"]
191 dnl Checks for library functions.
193 AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
194 [], [], [#include "$srcdir/src/have.h"]
197 AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
198 AM_CONDITIONAL(GETOPT, test "$getopt" = true)
200 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
201 #include <netinet/in.h>
205 dnl Operating system specific checks
208 AC_CHECK_HEADERS([linux/if_tun.h],
209 [], [AC_MSG_ERROR([Required header file missng])], [#include "$srcdir/src/have.h"]
212 *bsd*|*dragonfly*|*darwin*)
213 AC_CHECK_HEADERS([net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h],
214 [], [], [#include "$srcdir/src/have.h"]
218 AC_CHECK_FUNC(socket, [], [AC_CHECK_LIB(socket, connect)])
226 AC_ARG_ENABLE(legacy-protocol,
227 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
228 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
229 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
233 dnl These are defined in files in m4/
235 dnl AC_ARG_WITH(libgcrypt, AC_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
236 dnl AC_ARG_WITH(openssl, AC_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
243 AS_IF([test "x$enable_legacy_protocol" != "xno"],
244 [AS_IF([test -n "$with_libgcrypt"],
245 [gcrypt=true; tinc_LIBGCRYPT],
246 [openssl=true; tinc_OPENSSL])
250 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
251 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
254 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
256 dnl Check if support for jumbograms is requested
257 AC_ARG_ENABLE(jumbograms,
258 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
259 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
260 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
264 dnl Ensure runstatedir is set if we are using a version of autoconf that does not support it
265 if test "x$runstatedir" = "x"; then
266 AC_SUBST([runstatedir], ['${localstatedir}/run'])
269 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile test/Makefile test/testlib.sh systemd/Makefile bash_completion.d/Makefile])