configure.ac

   1 AC_INIT(openconnect, 3.20)
   2 PKG_PROG_PKG_CONFIG
   3 AC_LANG_C
   4 AC_CANONICAL_HOST
   5 AM_MAINTAINER_MODE([enable])
   6 AM_INIT_AUTOMAKE([foreign])
   7 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
   8
   9 # Define htmldir and localedir for users of ancient autoconf building from git
  10 AC_PREREQ([2.59c], [], [AC_SUBST([htmldir], [m4_ifset([AC_PACKAGE_TARNAME],
  11           ['${datadir}/doc/${PACKAGE_TARNAME}'],
  12           ['${datadir}/doc/${PACKAGE}'])
  13 ])])
  14
  15 AC_PREREQ([2.60], [], [AC_SUBST([localedir], ['$(datadir)/locale'])])
  16
  17 AC_ARG_WITH([vpnc-script],
  18         [AS_HELP_STRING([--with-vpnc-script],
  19           [default location of vpnc-script helper])])
  20
  21 if test "$with_vpnc_script" = "yes" || test "$with_vpnc_script" = ""; then
  22    with_vpnc_script=/etc/vpnc/vpnc-script
  23    if ! test -x "$with_vpnc_script"; then
  24       AC_MSG_ERROR([${with_vpnc_script} does not seem to be executable.]
  25     [OpenConnect will not function correctly without a vpnc-script.]
  26     [See http://www.infradead.org/openconnect/vpnc-script.html for more details.]
  27     []
  28     [If you are building a distribution package, please ensure that your]
  29     [packaging is correct, and that a vpnc-script will be installed when the]
  30     [user installs your package. You should provide a --with-vpnc-script=]
  31     [argument to this configure script, giving the full path where the script]
  32     [will be installed.]
  33     []
  34     [The standard location is ${with_vpnc_script}. To bypass this error and]
  35     [build OpenConnect to use the script from this location, even though it's]
  36     [not present at the time you are building OpenConnect, pass the argument]
  37     ["--with-vpnc-script=${with_vpnc_script}"])
  38   fi
  39 elif test "$with_vpnc_script" = "no"; then
  40    AC_ERROR([You cannot disable vpnc-script.]
  41    [OpenConnect will not function correctly without it.]
  42    [See http://www.infradead.org/openconnect/vpnc-script.html])
  43 fi
  44
  45 AC_DEFINE_UNQUOTED(DEFAULT_VPNCSCRIPT, "${with_vpnc_script}")
  46
  47 case $host_os in
  48  *linux* | *gnu*)
  49     AC_MSG_NOTICE([Applying feature macros for GNU build])
  50     AC_DEFINE(_POSIX_C_SOURCE, 200112L)
  51     # For strcasecmp()
  52     AC_DEFINE(_BSD_SOURCE)
  53     # For asprintf()
  54     AC_DEFINE(_GNU_SOURCE)
  55     ;;
  56  *netbsd*)
  57     AC_MSG_NOTICE([Applying feature macros for NetBSD build])
  58     AC_DEFINE(_POSIX_C_SOURCE, 200112L)
  59     AC_DEFINE(_NETBSD_SOURCE)
  60     ;;
  61  *)
  62     # On FreeBSD the only way to get vsyslog() visible is to define
  63     #  *nothing*, which makes absolutely everything visible.
  64     # On Darwin enabling _POSIX_C_SOURCE breaks <sys/mount.h> because
  65     # u_long and other types don't get defined. OpenBSD is similar.
  66     ;;
  67 esac
  68
  69 symver_time=
  70 symver_getline=
  71 symver_asprintf=
  72
  73 case $host_os in
  74  *solaris*|*sunos*)
  75     symver_time="openconnect__time;"
  76     ;;
  77 esac
  78
  79 AC_CHECK_FUNC(getline, [AC_DEFINE(HAVE_GETLINE, 1)], [symver_getline="openconnect__getline;"])
  80 AC_CHECK_FUNC(strcasestr, [AC_DEFINE(HAVE_STRCASESTR, 1)], [])
  81 AC_CHECK_FUNC(asprintf, [AC_DEFINE(HAVE_ASPRINTF, 1)], [symver_asprintf="openconnect__asprintf;"])
  82 if test -n "$symver_asprintf"; then
  83   AC_MSG_CHECKING([for va_copy])
  84   AC_LINK_IFELSE([AC_LANG_PROGRAM([
  85         #include <stdarg.h>
  86         va_list a;],[
  87         va_list b;
  88         va_copy(b,a);
  89         va_end(b);])],
  90         [AC_DEFINE(HAVE_VA_COPY, 1)
  91         AC_MSG_RESULT(va_copy)],
  92         [AC_LINK_IFELSE([AC_LANG_PROGRAM([
  93                 #include <stdarg.h>
  94                 va_list a;],[
  95                 va_list b;
  96                 __va_copy(b,a);
  97                 va_end(b);])],
  98                 [AC_DEFINE(HAVE___VA_COPY, 1)
  99                 AC_MSG_RESULT(__va_copy)],
 100                 [AC_MSG_RESULT(no)
 101                 AC_MSG_ERROR([Your system lacks asprintf() and va_copy()])])
 102         ])
 103 fi
 104 AC_SUBST(SYMVER_TIME, $symver_time)
 105 AC_SUBST(SYMVER_GETLINE, $symver_getline)
 106 AC_SUBST(SYMVER_ASPRINTF, $symver_asprintf)
 107
 108 AS_COMPILER_FLAGS(CFLAGS,
 109         "-Wall
 110          -Wextra
 111          -Wno-missing-field-initializers
 112          -Wno-sign-compare
 113          -Wno-unused-parameter
 114          -Werror=pointer-to-int-cast
 115          -Wdeclaration-after-statement
 116          -Werror-implicit-function-declaration
 117          -Wformat-nonliteral
 118          -Wformat-security
 119          -Winit-self
 120          -Wmissing-declarations
 121          -Wmissing-include-dirs
 122          -Wnested-externs
 123          -Wpointer-arith
 124          -Wwrite-strings")
 125
 126 AC_ENABLE_SHARED
 127 AC_DISABLE_STATIC
 128
 129 AC_ARG_ENABLE([nls],
 130         [ --disable-nls           do not use Native Language Support],
 131         [USE_NLS=$enableval], [USE_NLS=yes])
 132 LIBINTL=
 133 if test "$USE_NLS" = "yes"; then
 134    AC_PATH_PROG(MSGFMT, msgfmt)
 135    if test "$MSGFMT" = ""; then
 136       AC_ERROR([msgfmt could not be found. Try configuring with --disable-nls])
 137    fi
 138 fi
 139 LIBINTL=
 140 if test "$USE_NLS" = "yes"; then
 141    AC_MSG_CHECKING([for functional NLS support])
 142    AC_LINK_IFELSE([AC_LANG_PROGRAM([
 143     #include <locale.h>
 144     #include <libintl.h>],[
 145     setlocale(LC_ALL, "");
 146     bindtextdomain("openconnect", "/tmp");
 147     (void)dgettext("openconnect", "foo");])],
 148     [AC_MSG_RESULT(yes)],
 149     [oldLIBS="$LIBS"
 150      LIBS="$LIBS -lintl"
 151      AC_LINK_IFELSE([AC_LANG_PROGRAM([
 152       #include <locale.h>
 153       #include <libintl.h>],[
 154       setlocale(LC_ALL, "");
 155       bindtextdomain("openconnect", "/tmp");
 156       (void)dgettext("openconnect", "foo");])],
 157       [AC_MSG_RESULT(yes (with -lintl))]
 158        LIBINTL="-lintl",
 159       [AC_MSG_RESULT(no)
 160        USE_NLS=no])
 161      LIBS="$oldLIBS"])
 162 fi
 163
 164 if test "$USE_NLS" = "yes"; then
 165    AC_SUBST(LIBINTL)
 166    AC_DEFINE(ENABLE_NLS, 1)
 167 fi
 168 AM_CONDITIONAL(USE_NLS, [test "$USE_NLS" = "yes"])
 169
 170 AC_ARG_WITH([openssl],
 171             AS_HELP_STRING([--with-openssl],
 172                            [Location of OpenSSL build dir]),
 173             [OPENSSL_CFLAGS="-I${with_openssl}/include"
 174              OPENSSL_LIBS="${with_openssl}/libssl.a ${with_openssl}/libcrypto.a -ldl -lz"
 175              AC_SUBST(OPENSSL_CFLAGS)
 176              AC_SUBST(OPENSSL_LIBS)
 177              enable_static=yes
 178              enable_shared=no],
 179             [PKG_CHECK_MODULES(OPENSSL, openssl, [],
 180                                [oldLIBS="$LIBS"
 181                                LIBS="$LIBS -lssl -lcrypto"
 182                                AC_MSG_CHECKING([for OpenSSL without pkg-config])
 183                                AC_LINK_IFELSE([AC_LANG_PROGRAM([
 184                                 #include <openssl/ssl.h>
 185                                 #include <openssl/err.h>],[
 186                                 SSL_library_init();
 187                                 ERR_clear_error();
 188                                 SSL_load_error_strings();
 189                                 OpenSSL_add_all_algorithms();])],
 190                                [AC_MSG_RESULT(yes)
 191                                 AC_SUBST([OPENSSL_LIBS], ["-lssl -lcrypto"])
 192                                 AC_SUBST([OPENSSL_CFLAGS], [])],
 193                                [AC_MSG_RESULT(no)
 194                                 AC_ERROR([Could not build against OpenSSL])])
 195                                 LIBS="$oldLIBS"])])
 196
 197 # Needs to happen after we default to static/shared libraries based on OpenSSL
 198 AC_PROG_LIBTOOL
 199
 200 # Ick. This seems like it's likely to be very fragile, but I can't see a better
 201 # way. I shall console myself with the observation that the failure mode isn't
 202 # particularly horrible — you just don't get symbol versioning if it fails.
 203 symvers=no
 204 if test "$enable_shared" = "yes" ; then
 205    AC_MSG_CHECKING([if library symbol versioning is available]);
 206    echo 'FOO { global: foo; local: *; };' > conftest.map
 207    echo 'int foo = 0;' > conftest.$ac_ext
 208    if AC_TRY_EVAL(ac_compile); then
 209       soname=conftest
 210       libobjs=conftest.$ac_objext
 211       if AC_TRY_EVAL(archive_cmds ${wl}--version-script ${wl}conftest.map); then
 212          AC_SUBST(VERSION_SCRIPT_ARG, [--version-script])
 213          symvers="yes (with --version-script)"
 214       elif AC_TRY_EVAL(archive_cmds ${wl}-M ${wl}conftest.map); then
 215          AC_SUBST(VERSION_SCRIPT_ARG, [-M])
 216          symvers="yes (with -M)"
 217       fi
 218    fi
 219    AC_MSG_RESULT(${symvers})
 220 fi
 221 AM_CONDITIONAL(HAVE_SYMBOL_VERSIONING, [test "${symvers}" != "no"])
 222
 223 PKG_CHECK_MODULES(LIBXML2, libxml-2.0)
 224
 225 PKG_CHECK_MODULES(ZLIB, zlib, [],
 226                   [oldLIBS="$LIBS"
 227                   LIBS="$LIBS -lz"
 228                   AC_MSG_CHECKING([for zlib without pkg-config])
 229                   AC_LINK_IFELSE([AC_LANG_PROGRAM([
 230                    #include <zlib.h>],[
 231                    z_stream zs;
 232                    deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED,
 233                                 -12, 9, Z_DEFAULT_STRATEGY);])],
 234                   [AC_MSG_RESULT(yes)
 235                    AC_SUBST([ZLIB_LIBS], [-lz])
 236                    AC_SUBST([ZLIB_CFLAGS], [])],
 237                   [AC_MSG_RESULT(no)
 238                    AC_ERROR([Could not build against zlib])])
 239                   LIBS="$oldLIBS"])
 240
 241 PKG_CHECK_MODULES(LIBPROXY, libproxy-1.0,
 242                 [AC_SUBST(LIBPROXY_PC, libproxy-1.0)
 243                  AC_DEFINE([LIBPROXY_HDR], ["proxy.h"])
 244                  libproxy_pkg=yes],
 245                  libproxy_pkg=no)
 246 dnl Libproxy *can* exist without a .pc file, and its header may be called
 247 dnl libproxy.h in that case.
 248 if (test "$libproxy_pkg" = "no"); then
 249    AC_MSG_CHECKING([for libproxy])
 250    oldLIBS="$LIBS"
 251    LIBS="$LIBS -lproxy"
 252    AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <libproxy.h>],
 253                            [(void)px_proxy_factory_new();])],
 254           [AC_MSG_RESULT(yes (with libproxy.h))
 255            AC_DEFINE([LIBPROXY_HDR], ["libproxy.h"])
 256            AC_SUBST([LIBPROXY_LIBS], [-lproxy])],
 257           [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <proxy.h>],
 258                                   [(void)px_proxy_factory_new();])],
 259                   [AC_MSG_RESULT(yes (with proxy.h))
 260                    AC_DEFINE([LIBPROXY_HDR], ["proxy.h"])
 261                    AC_SUBST([LIBPROXY_LIBS], [-lproxy])],
 262                    [AC_MSG_RESULT(no)])])
 263    LIBS="$oldLIBS"
 264 fi
 265
 266 AC_CHECK_HEADER([if_tun.h],
 267     [AC_DEFINE([IF_TUN_HDR], ["if_tun.h"])],
 268     [AC_CHECK_HEADER([linux/if_tun.h],
 269         [AC_DEFINE([IF_TUN_HDR], ["linux/if_tun.h"])],
 270         [AC_CHECK_HEADER([net/if_tun.h],
 271             [AC_DEFINE([IF_TUN_HDR], ["net/if_tun.h"])],
 272             [AC_CHECK_HEADER([net/tun/if_tun.h],
 273                 [AC_DEFINE([IF_TUN_HDR], ["net/tun/if_tun.h"])])])])])
 274
 275 oldLIBS="$LIBS"
 276 LIBS="$LIBS $OPENSSL_LIBS"
 277
 278 AC_MSG_CHECKING([for ENGINE_by_id() in OpenSSL])
 279 AC_LINK_IFELSE([AC_LANG_PROGRAM(
 280         [#include <openssl/engine.h>],
 281         [ENGINE_by_id("foo");])],
 282         [AC_MSG_RESULT(yes)
 283          AC_DEFINE(HAVE_ENGINE, [1], [OpenSSL has ENGINE support])],
 284         [AC_MSG_RESULT(no)
 285          AC_MSG_NOTICE([Building without OpenSSL TPM ENGINE support])])
 286
 287 AC_MSG_CHECKING([for dtls1_stop_timer() in OpenSSL])
 288 AC_LINK_IFELSE([AC_LANG_PROGRAM(
 289         [#include <openssl/ssl.h>
 290          #include <stdlib.h>
 291          extern void dtls1_stop_timer(SSL *);],
 292         [dtls1_stop_timer(NULL);])],
 293         [AC_MSG_RESULT(yes)
 294          AC_DEFINE(HAVE_DTLS1_STOP_TIMER, [1], [OpenSSL has dtls1_stop_timer() function])],
 295         [AC_MSG_RESULT(no)])
 296 LIBS="$oldLIBS"
 297
 298 AC_PATH_PROG(PYTHON, [python], [], $PATH:/bin:/usr/bin)
 299 if (test -n "${ac_cv_path_PYTHON}"); then
 300    AC_SUBST(PYTHON, ${ac_cv_path_PYTHON})
 301 else
 302    AC_MSG_NOTICE([Python not found; not building HTML pages])
 303 fi
 304 AM_CONDITIONAL(BUILD_WWW, [test -n "${ac_cv_path_PYTHON}"])
 305
 306 AC_SUBST([CONFIG_STATUS_DEPENDENCIES], ['$(top_srcdir)/po/LINGUAS $(top_srcdir)/openconnect.h'])
 307 RAWLINGUAS=`sed -e "/^#/d" -e "s/#.*//" "${srcdir}/po/LINGUAS"`
 308 # Remove newlines
 309 LINGUAS=`echo $RAWLINGUAS`
 310 AC_SUBST(LINGUAS)
 311
 312 APIMAJOR="`sed -n 's/^#define OPENCONNECT_API_VERSION_MAJOR \(.*\)/\1/p' openconnect.h`"
 313 APIMINOR="`sed -n 's/^#define OPENCONNECT_API_VERSION_MINOR \(.*\)/\1/p' openconnect.h`"
 314 AC_SUBST(APIMAJOR)
 315 AC_SUBST(APIMINOR)
 316
 317 # We want version.c to depend on the files that would affect the
 318 # output of version.sh. But we cannot assume that they'll exist,
 319 # and we cannot use $(wildcard) in a non-GNU makefile. So we just
 320 # depend on the files which happen to exist at configure time.
 321 GITVERSIONDEPS=
 322 for a in .git/index .git/packed-refs .git/refs/tags .git/HEAD; do
 323     if test -r $a ; then
 324        GITVERSIONDEPS="$GITVERSIONDEPS $a"
 325     fi
 326 done
 327 AC_SUBST(GITVERSIONDEPS)
 328
 329 AC_OUTPUT(Makefile openconnect.pc po/Makefile www/Makefile libopenconnect.map \
 330           www/styles/Makefile www/inc/Makefile www/images/Makefile)