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="$LIBS -L/sw/lib"])
146 dnl Checks for header files.
147 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
149 AC_CHECK_HEADERS([syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h getopt.h stddef.h sys/epoll.h])
150 AC_CHECK_HEADERS([net/if.h net/if_types.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h],
151 [], [], [#include "$srcdir/src/have.h"]
153 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
154 [], [], [#include "$srcdir/src/have.h"]
156 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
157 [], [], [#include "$srcdir/src/have.h"]
160 dnl Checks for typedefs, structures, and compiler characteristics.
161 tinc_ATTRIBUTE(__malloc__)
162 tinc_ATTRIBUTE(__nonnull__)
163 tinc_ATTRIBUTE(__warn_unused_result__)
165 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], , ,
166 [#include "$srcdir/src/have.h"]
169 dnl Checks for library functions.
170 AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
171 [], [], [#include "$srcdir/src/have.h"]
174 AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
175 AM_CONDITIONAL(GETOPT, test "$getopt" = true)
177 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
178 #include <netinet/in.h>
182 dnl Operating system specific checks
185 AC_CHECK_HEADERS([linux/if_tun.h],
186 [], [AC_MSG_ERROR([Required header file missng])], [#include "$srcdir/src/have.h"]
189 *bsd*|*dragonfly*|*darwin*)
190 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],
191 [], [], [#include "$srcdir/src/have.h"]
195 AC_CHECK_FUNC(socket, [], [AC_CHECK_LIB(socket, connect)])
203 AC_ARG_ENABLE(legacy-protocol,
204 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
205 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
206 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
210 dnl These are defined in files in m4/
212 dnl AC_ARG_WITH(libgcrypt, AS_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
213 dnl AC_ARG_WITH(openssl, AS_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
221 AS_IF([test "x$enable_legacy_protocol" != "xno"],
222 [AS_IF([test -n "$with_libgcrypt"],
223 [gcrypt=true; tinc_LIBGCRYPT],
224 [openssl=true; tinc_OPENSSL])
228 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
229 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
232 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
234 dnl Check if support for jumbograms is requested
235 AC_ARG_ENABLE(jumbograms,
236 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
237 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
238 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
242 dnl Compiler hardening flags
243 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
245 AX_CFLAGS_WARN_ALL(CFLAGS)
247 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
248 AS_IF([test "x$enable_hardening" != "xno"],
249 [AX_CHECK_COMPILE_FLAG([-D_FORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"])
250 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
251 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
254 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
255 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
256 AX_CHECK_LINK_FLAG([-lssp], [LIBS="$LIBS -lssp"])
259 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
260 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
263 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
264 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
265 AX_CHECK_COMPILE_FLAG([-W -Wextra -pedantic -Wreturn-type -Wold-style-definition -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wbad-function-cast -Wwrite-strings -fdiagnostics-show-option -fstrict-aliasing -Wmissing-noreturn],
266 [CPPFLAGS="$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"])
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])