1 dnl Process this file with autoconf to produce a configure script.
4 AC_INIT([MeshLink], [0.1])
5 AC_CONFIG_SRCDIR([src/libmeshlink.c])
7 AM_INIT_AUTOMAKE([check-news std-options subdir-objects -Wall])
8 AC_CONFIG_HEADERS([config.h])
9 AC_CONFIG_MACRO_DIR([m4])
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.
33 AC_DEFINE(HAVE_LINUX, 1, [Linux])
37 AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
41 AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
45 AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
49 AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
53 AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
57 AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
61 AC_MSG_WARN("Unknown BSD variant, MeshLink might not compile or work!")
62 AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
66 AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
70 AC_DEFINE(HAVE_MINGW, 1, [MinGW])
71 LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32"
74 AC_MSG_ERROR("Unknown operating system.")
78 AC_ARG_WITH(windows2000,
79 AS_HELP_STRING([--with-windows2000], [compile with support for Windows 2000. This disables support for tunneling over existing IPv6 networks.]),
80 [ AS_IF([test "x$with_windows2000" = "xyes"],
81 [AC_DEFINE(WITH_WINDOWS2000, 1, [Compile with support for Windows 2000])])
85 AM_CONDITIONAL(LINUX, test "$linux" = true)
86 AM_CONDITIONAL(BSD, test "$bsd" = true)
87 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
88 AM_CONDITIONAL(MINGW, test "$mingw" = true)
89 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
90 AM_CONDITIONAL(UML, test "$uml" = true)
91 AM_CONDITIONAL(VDE, test "$vde" = true)
92 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
96 if test -d /sw/include ; then
97 CPPFLAGS="$CPPFLAGS -I/sw/include"
99 if test -d /sw/lib ; then
100 LIBS="$LIBS -L/sw/lib"
103 dnl Compiler hardening flags
104 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
106 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
107 AS_IF([test "x$enable_hardening" != "xno"],
108 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORITFY_SOURCE=2"])
109 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"])
110 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"])
113 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
114 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
117 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
118 AX_CHECK_COMPILE_FLAG([-fPIC], [CPPFLAGS="$CPPFLAGS -fPIC"])
119 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
122 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
123 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
127 dnl Checks for header files.
128 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
131 AC_CHECK_HEADERS([stdbool.h syslog.h sys/file.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])
132 AC_CHECK_HEADERS([time.h],
133 [], [], [#include "src/have.h"]
136 dnl Checks for typedefs, structures, and compiler characteristics.
144 MeshLink_ATTRIBUTE(__malloc__)
145 MeshLink_ATTRIBUTE(__warn_unused_result__)
147 AC_CHECK_TYPES([socklen_t, struct addrinfo, struct sockaddr_in6], , ,
148 [#include "src/have.h"]
151 dnl Checks for library functions.
153 AC_CHECK_FUNCS([asprintf fchmod fork get_current_dir_name gettimeofday random select strdup strerror time usleep],
154 [], [], [#include "src/have.h"]
157 dnl Support for SunOS
159 AC_CHECK_FUNC(socket, [], [
160 AC_CHECK_LIB(socket, connect)
162 AC_CHECK_FUNC(gethostbyname, [], [
163 AC_CHECK_LIB(nsl, gethostbyname)
166 AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo],
167 [], [], [#include "src/have.h"]
172 dnl These are defined in files in m4/
176 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile m4/Makefile test/Makefile])