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])
69 AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
73 AC_DEFINE(HAVE_MINGW, 1, [MinGW])
74 LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32 -liphlpapi"
75 LDFLAGS="$LDFLAGS -static"
76 CPPFLAGS="$CPPFLAGS -DMINIUPNP_STATICLIB"
79 AC_MSG_ERROR("Unknown operating system.")
84 AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
85 [ AS_IF([test "x$enable_uml" = "xyes"],
86 [ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
95 AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
96 [ AS_IF([test "x$enable_vde" = "xyes"],
97 [ AC_CHECK_HEADERS(libvdeplug_dyn.h, [], [AC_MSG_ERROR([VDE plug header files not found.]); break])
98 AC_CHECK_LIB(dl, dlopen, [LIBS="$LIBS -ldl"], [AC_MSG_ERROR([VDE plug depends on libdl.]); break])
99 AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
107 AC_ARG_ENABLE(tunemu,
108 AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
109 [ AS_IF([test "x$enable_tunemu" = "xyes"],
110 [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
119 AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
120 [ systemd=true; systemd_path="$with_systemd" ],
124 AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="\${libdir}/systemd/system"],
125 [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
127 AC_SUBST(systemd_path, $systemd_path)
129 AM_CONDITIONAL(LINUX, test "$linux" = true)
130 AM_CONDITIONAL(BSD, test "$bsd" = true)
131 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
132 AM_CONDITIONAL(MINGW, test "$mingw" = true)
133 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
134 AM_CONDITIONAL(UML, test "$uml" = true)
135 AM_CONDITIONAL(VDE, test "$vde" = true)
136 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
137 AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
141 AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
142 AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
144 dnl Compiler hardening flags
145 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
147 AX_CFLAGS_WARN_ALL(CFLAGS)
149 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
150 AS_IF([test "x$enable_hardening" != "xno"],
151 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
152 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
153 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
156 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
157 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
160 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
161 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
164 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
165 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
169 dnl Checks for header files.
170 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
172 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])
173 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],
174 [], [], [#include "$srcdir/src/have.h"]
176 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
177 [], [], [#include "$srcdir/src/have.h"]
179 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
180 [], [], [#include "$srcdir/src/have.h"]
183 dnl Checks for typedefs, structures, and compiler characteristics.
184 tinc_ATTRIBUTE(__malloc__)
185 tinc_ATTRIBUTE(__nonnull__)
186 tinc_ATTRIBUTE(__warn_unused_result__)
188 AC_CHECK_TYPES([struct ether_header, struct arphdr, struct ether_arp, struct ip, struct icmp, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
189 [#include "$srcdir/src/have.h"]
192 dnl Checks for library functions.
194 AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
195 [], [], [#include "$srcdir/src/have.h"]
198 AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
199 AM_CONDITIONAL(GETOPT, test "$getopt" = true)
201 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
202 #include <netinet/in.h>
206 dnl Operating system specific checks
209 AC_CHECK_HEADERS([linux/if_tun.h],
210 [], [AC_MSG_ERROR([Required header file missng])], [#include "$srcdir/src/have.h"]
213 *bsd*|*dragonfly*|*darwin*)
214 AC_CHECK_HEADERS([net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h],
215 [], [], [#include "$srcdir/src/have.h"]
219 AC_CHECK_FUNC(socket, [], [AC_CHECK_LIB(socket, connect)])
227 AC_ARG_ENABLE(legacy-protocol,
228 AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
229 [ AS_IF([test "x$enable_legacy_protocol" = "xno"],
230 [ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
234 dnl These are defined in files in m4/
236 dnl AC_ARG_WITH(libgcrypt, AC_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
237 dnl AC_ARG_WITH(openssl, AC_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
244 AS_IF([test "x$enable_legacy_protocol" != "xno"],
245 [AS_IF([test -n "$with_libgcrypt"],
246 [gcrypt=true; tinc_LIBGCRYPT],
247 [openssl=true; tinc_OPENSSL])
251 AM_CONDITIONAL(OPENSSL, test -n "$openssl")
252 AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
255 AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
257 dnl Check if support for jumbograms is requested
258 AC_ARG_ENABLE(jumbograms,
259 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
260 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
261 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
265 dnl Ensure runstatedir is set if we are using a version of autoconf that does not support it
266 if test "x$runstatedir" = "x"; then
267 AC_SUBST([runstatedir], ['${localstatedir}/run'])
270 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile test/Makefile systemd/Makefile bash_completion.d/Makefile])