1dnl Process this file with autoconf to produce a configure script.
2
3AC_PREREQ(2.61)
4AC_INIT([tinc], [1.0.36])
5AC_CONFIG_SRCDIR([src/tincd.c])
6AM_INIT_AUTOMAKE([1.11 check-news std-options subdir-objects nostdinc silent-rules -Wall])
7AC_CONFIG_HEADERS([config.h])
8AC_CONFIG_MACRO_DIR([m4])
9AM_SILENT_RULES([yes])
10
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.
14AC_GNU_SOURCE
15AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
16
17dnl Checks for programs.
18AC_PROG_CC_C99
19AC_PROG_CPP
20AC_PROG_INSTALL
21
22AM_PROG_CC_C_O
23
24dnl Check and set OS
25
26AC_CANONICAL_HOST
27
28case $host_os in
29  *linux*)
30    linux=true
31    AC_DEFINE(HAVE_LINUX, 1, [Linux])
32  ;;
33  *freebsd*)
34    bsd=true
35    AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
36  ;;
37  *darwin*)
38    bsd=true
39    AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
40  ;;
41  *solaris*)
42    solaris=true
43    AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
44  ;;
45  *openbsd*)
46    bsd=true
47    AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
48  ;;
49  *netbsd*)
50    bsd=true
51    AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
52  ;;
53  *dragonfly*)
54    bsd=true
55    AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
56  ;;
57  *bsd*)
58    bsd=true
59    AC_MSG_WARN("Unknown BSD variant, tinc might not compile or work!")
60    AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
61  ;;
62  *cygwin*)
63    cygwin=true
64    AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
65  ;;
66  *mingw*)
67    mingw=true
68    AC_DEFINE(HAVE_MINGW, 1, [MinGW])
69    LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32"
70  ;;
71  *)
72    AC_MSG_ERROR("Unknown operating system.")
73  ;;
74esac
75
76AC_ARG_ENABLE(uml,
77  AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
78  [ AS_IF([test "x$enable_uml" = "xyes"],
79      [ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
80        uml=true
81      ],
82      [uml=false])
83  ],
84  [uml=false]
85)
86
87AC_ARG_ENABLE(vde,
88  AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
89  [ AS_IF([test "x$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])
92        vde=true
93      ],
94      [vde=false])
95  ],
96  [vde=false]
97)
98
99AC_ARG_ENABLE(tunemu,
100  AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
101  [ AS_IF([test "x$enable_tunemu" = "xyes"],
102      [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
103        tunemu=true
104      ],
105      [tunemu=false])
106  ],
107  [tunemu=false]
108)
109
110AC_ARG_WITH(windows2000,
111  AS_HELP_STRING([--with-windows2000], [compile with support for Windows 2000. This disables support for tunneling over existing IPv6 networks.]),
112  [ AS_IF([test "x$with_windows2000" = "xyes"],
113      [AC_DEFINE(WITH_WINDOWS2000, 1, [Compile with support for Windows 2000])])
114  ]
115)
116
117AC_ARG_WITH(systemd,
118  AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
119  [ systemd=true; systemd_path="$with_systemd" ],
120  [ systemd=false ]
121)
122
123AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="\${libdir}/systemd/system"],
124      [AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
125
126AC_SUBST(systemd_path, $systemd_path)
127
128AM_CONDITIONAL(LINUX, test "$linux" = true)
129AM_CONDITIONAL(BSD, test "$bsd" = true)
130AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
131AM_CONDITIONAL(MINGW, test "$mingw" = true)
132AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
133AM_CONDITIONAL(UML, test "$uml" = true)
134AM_CONDITIONAL(VDE, test "$vde" = true)
135AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
136AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
137
138AC_CACHE_SAVE
139
140if test -d /sw/include ; then
141  CPPFLAGS="$CPPFLAGS -I/sw/include"
142fi
143if test -d /sw/lib ; then
144  LIBS="$LIBS -L/sw/lib"
145fi
146
147dnl Compiler hardening flags
148dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
149
150AX_CFLAGS_WARN_ALL(CFLAGS)
151
152AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
153AS_IF([test "x$enable_hardening" != "xno"],
154  [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
155   AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
156   AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
157   case $host_os in
158     *mingw*)
159       AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
160       AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
161       ;;
162     *)
163       AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
164       AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
165       ;;
166   esac
167   AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
168   AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
169  ]
170);
171
172dnl Checks for libraries.
173
174dnl Checks for header files.
175dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
176
177AC_CHECK_HEADERS([syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/uio.h sys/wait.h netdb.h arpa/inet.h arpa/nameser.h dirent.h getopt.h])
178AC_CHECK_HEADERS([net/if.h net/if_types.h linux/if_tun.h net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h],
179  [], [], [#include "$srcdir/src/have.h"]
180)
181AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
182  [], [], [#include "$srcdir/src/have.h"]
183)
184AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
185  [], [], [#include "$srcdir/src/have.h"]
186)
187
188dnl Checks for typedefs, structures, and compiler characteristics.
189AC_TYPE_PID_T
190
191tinc_ATTRIBUTE(__malloc__)
192
193AC_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], , ,
194  [#include "$srcdir/src/have.h"]
195)
196
197dnl Checks for library functions.
198AC_TYPE_SIGNAL
199AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall pselect putenv strsignal system unsetenv usleep vsyslog devname fdevname],
200  [], [], [#include "$srcdir/src/have.h"]
201)
202
203AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
204AM_CONDITIONAL(GETOPT, test "$getopt" = true)
205
206dnl Support for SunOS
207
208AC_CHECK_FUNC(socket, [], [
209  AC_CHECK_LIB(socket, connect)
210])
211AC_CHECK_FUNC(gethostbyname, [], [
212  AC_CHECK_LIB(nsl, gethostbyname)
213])
214
215AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo],
216  [], [], [#include "$srcdir/src/have.h"]
217)
218
219AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
220  #include <netinet/in.h>
221  #include <resolv.h>
222])
223
224AC_CACHE_SAVE
225
226dnl These are defined in files in m4/
227
228tinc_ZLIB
229tinc_LZO
230tinc_OPENSSL
231
232dnl Check if support for jumbograms is requested
233AC_ARG_ENABLE(jumbograms,
234  AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
235  [ AS_IF([test "x$enable_jumbograms" = "xyes"],
236      [ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
237  ]
238)
239
240dnl Ensure runstatedir is set if we are using a version of autoconf that does not support it
241if test "x$runstatedir" = "x"; then
242  AC_SUBST([runstatedir], ['${localstatedir}/run'])
243fi
244
245AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile systemd/Makefile])
246
247AC_OUTPUT
248