1 dnl Process this file with autoconf to produce a configure script.
4 AC_INIT([tinc], [1.0.26])
5 AC_CONFIG_SRCDIR([src/tincd.c])
6 AM_INIT_AUTOMAKE([1.11 check-news std-options subdir-objects nostdinc silent-rules -Wall])
7 AC_CONFIG_HEADERS([config.h])
11 # Enable GNU extensions.
12 # Define this here, not in acconfig's @TOP@ section, since definitions
13 # in the latter don't make it into the configure-time tests.
15 AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
17 dnl Checks for programs.
31 AC_DEFINE(HAVE_LINUX, 1, [Linux])
35 AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
39 AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
43 AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
47 AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
51 AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
55 AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
59 AC_MSG_WARN("Unknown BSD variant, tinc might not compile or work!")
60 AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
64 AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
68 AC_DEFINE(HAVE_MINGW, 1, [MinGW])
69 LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32"
72 AC_MSG_ERROR("Unknown operating system.")
77 AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
78 [ AS_IF([test "x$enable_uml" = "xyes"],
79 [ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
88 AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
89 [ AS_IF([test "x$enable_vde" = "xyes"],
90 [ AC_CHECK_HEADERS(libvdeplug_dyn.h, [], [AC_MSG_ERROR([VDE plug header files not found.]); break])
91 AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
100 AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
101 [ AS_IF([test "x$enable_tunemu" = "xyes"],
102 [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
110 AC_ARG_WITH(windows2000,
111 AS_HELP_STRING([--with-windows2000], [compile with support for Windows 2000. This disables support for tunneling over existing IPv6 networks.]),
112 [ AS_IF([test "x$with_windows2000" = "xyes"],
113 [AC_DEFINE(WITH_WINDOWS2000, 1, [Compile with support for Windows 2000])])
117 AM_CONDITIONAL(LINUX, test "$linux" = true)
118 AM_CONDITIONAL(BSD, test "$bsd" = true)
119 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
120 AM_CONDITIONAL(MINGW, test "$mingw" = true)
121 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
122 AM_CONDITIONAL(UML, test "$uml" = true)
123 AM_CONDITIONAL(VDE, test "$vde" = true)
124 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
128 if test -d /sw/include ; then
129 CPPFLAGS="$CPPFLAGS -I/sw/include"
131 if test -d /sw/lib ; then
132 LIBS="$LIBS -L/sw/lib"
135 dnl Compiler hardening flags
136 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
138 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
139 AS_IF([test "x$enable_hardening" != "xno"],
140 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
141 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
142 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
145 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
146 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
149 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
150 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
153 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
154 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
158 dnl Checks for libraries.
160 dnl Checks for header files.
161 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
164 AC_CHECK_HEADERS([stdbool.h syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h time.h sys/uio.h sys/wait.h netdb.h arpa/inet.h arpa/nameser.h dirent.h getopt.h])
165 AC_CHECK_HEADERS([net/if.h net/if_types.h linux/if_tun.h net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h],
166 [], [], [#include "src/have.h"]
168 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
169 [], [], [#include "src/have.h"]
171 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
172 [], [], [#include "src/have.h"]
175 dnl Checks for typedefs, structures, and compiler characteristics.
183 tinc_ATTRIBUTE(__malloc__)
185 AC_CHECK_TYPES([socklen_t, struct ether_header, struct arphdr, struct ether_arp, struct in_addr, struct addrinfo, struct ip, struct icmp, struct in6_addr, struct sockaddr_in6, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
186 [#include "src/have.h"]
189 dnl Checks for library functions.
191 AC_CHECK_FUNCS([asprintf daemon fchmod flock ftime fork get_current_dir_name gettimeofday mlockall pselect putenv random select strdup strerror strsignal strtol system unsetenv usleep vsyslog writev devname fdevname],
192 [], [], [#include "src/have.h"]
195 AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
196 AM_CONDITIONAL(GETOPT, test "$getopt" = true)
198 dnl Support for SunOS
200 AC_CHECK_FUNC(socket, [], [
201 AC_CHECK_LIB(socket, connect)
203 AC_CHECK_FUNC(gethostbyname, [], [
204 AC_CHECK_LIB(nsl, gethostbyname)
207 AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo],
208 [], [], [#include "src/have.h"]
211 AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
212 #include <netinet/in.h>
218 dnl These are defined in files in m4/
224 dnl Check if support for jumbograms is requested
225 AC_ARG_ENABLE(jumbograms,
226 AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
227 [ AS_IF([test "x$enable_jumbograms" = "xyes"],
228 [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
232 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile m4/Makefile])