configure.ac

   1
   2 AC_INIT(openconnect, 3.17)
   3 PKG_PROG_PKG_CONFIG
   4 AC_LANG_C
   5 AC_CANONICAL_HOST
   6 AM_MAINTAINER_MODE([enable])
   7 AM_INIT_AUTOMAKE([foreign])
   8 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
   9
  10 # Define htmldir and localedir for users of ancient autoconf building from git
  11 AC_PREREQ([2.59c], [], [AC_SUBST([htmldir], [m4_ifset([AC_PACKAGE_TARNAME],
  12           ['${datadir}/doc/${PACKAGE_TARNAME}'],
  13           ['${datadir}/doc/${PACKAGE}'])
  14 ])])
  15
  16 AC_PREREQ([2.60], [], [AC_SUBST([localedir], ['$(datadir)/locale'])])
  17
  18 AC_ARG_WITH([vpnc-script],
  19         [AS_HELP_STRING([--with-vpnc-script],
  20           [default location of vpnc-script helper])])
  21
  22 if test "$with_vpnc_script" = "yes" || test "$with_vpnc_script" = ""; then
  23    with_vpnc_script=/etc/vpnc/vpnc-script
  24    if ! test -x "$with_vpnc_script"; then
  25       AC_MSG_ERROR([${with_vpnc_script} does not seem to be executable.]
  26     [OpenConnect will not function correctly without a vpnc-script.]
  27     [See http://www.infradead.org/openconnect/vpnc-script.html for more details.]
  28     []
  29     [If you are building a distribution package, please ensure that your]
  30     [packaging is correct, and that a vpnc-script will be installed when the]
  31     [user installs your package. You should provide a --with-vpnc-script=]
  32     [argument to this configure script, giving the full path where the script]
  33     [will be installed.]
  34     []
  35     [The standard location is ${with_vpnc_script}. To bypass this error and]
  36     [build OpenConnect to use the script from this location, even though it's]
  37     [not present at the time you are building OpenConnect, pass the argument]
  38     ["--with-vpnc-script=${with_vpnc_script}"])
  39   fi
  40 elif test "$with_vpnc_script" = "no"; then
  41    AC_ERROR([You cannot disable vpnc-script.]
  42    [OpenConnect will not function correctly without it.]
  43    [See http://www.infradead.org/openconnect/vpnc-script.html])
  44 fi
  45
  46 AC_DEFINE_UNQUOTED(DEFAULT_VPNCSCRIPT, "${with_vpnc_script}")
  47
  48 case $host_os in
  49  *linux* | *gnu*)
  50     AC_MSG_NOTICE([Applying feature macros for GNU build])
  51     AC_DEFINE(_POSIX_C_SOURCE, 200112L)
  52     # For strcasecmp()
  53     AC_DEFINE(_BSD_SOURCE)
  54     # For asprintf()
  55     AC_DEFINE(_GNU_SOURCE)
  56     ;;
  57  *netbsd*)
  58     AC_MSG_NOTICE([Applying feature macros for NetBSD build])
  59     AC_DEFINE(_POSIX_C_SOURCE, 200112L)
  60     AC_DEFINE(_NETBSD_SOURCE)
  61     ;;
  62  *)
  63     # On FreeBSD the only way to get vsyslog() visible is to define
  64     #  *nothing*, which makes absolutely everything visible.
  65     # On Darwin enabling _POSIX_C_SOURCE breaks <sys/mount.h> because
  66     # u_long and other types don't get defined. OpenBSD is similar.
  67     ;;
  68 esac
  69
  70 AC_CHECK_FUNC(strcasestr, [AC_DEFINE(HAVE_STRCASESTR, 1)], [])
  71 need_vacopy=no
  72 AC_CHECK_FUNC(asprintf, [AC_DEFINE(HAVE_ASPRINTF, 1)], [need_vacopy=yes])
  73 if test "$need_vacopy" = "yes"; then
  74   AC_MSG_CHECKING([for va_copy])
  75   AC_LINK_IFELSE([AC_LANG_PROGRAM([
  76         #include <stdarg.h>
  77         va_list a;],[
  78         va_list b;
  79         va_copy(b,a);
  80         va_end(b);])],
  81         [AC_DEFINE(HAVE_VA_COPY, 1)
  82         AC_MSG_RESULT(va_copy)],
  83         [AC_LINK_IFELSE([AC_LANG_PROGRAM([
  84                 #include <stdarg.h>
  85                 va_list a;],[
  86                 va_list b;
  87                 __va_copy(b,a);
  88                 va_end(b);])],
  89                 [AC_DEFINE(HAVE___VA_COPY, 1)
  90                 AC_MSG_RESULT(__va_copy)],
  91                 [AC_MSG_RESULT(no)
  92                 AC_MSG_ERROR([Your system lacks asprintf() and va_copy()])])
  93         ])
  94 fi
  95
  96
  97
  98 AS_COMPILER_FLAGS(CFLAGS,
  99         "-Wall
 100          -Wextra
 101          -Wno-missing-field-initializers
 102          -Wno-sign-compare
 103          -Wno-unused-parameter
 104          -Werror=pointer-to-int-cast
 105          -Wdeclaration-after-statement
 106          -Werror-implicit-function-declaration
 107          -Wformat-nonliteral
 108          -Wformat-security
 109          -Winit-self
 110          -Wmissing-declarations
 111          -Wmissing-include-dirs
 112          -Wnested-externs
 113          -Wpointer-arith
 114          -Wwrite-strings")
 115
 116 AC_ENABLE_SHARED
 117 AC_DISABLE_STATIC
 118
 119 AC_ARG_ENABLE([nls],
 120         [ --disable-nls           do not use Native Language Support],
 121         [USE_NLS=$enableval], [USE_NLS=yes])
 122 LIBINTL=
 123 if test "$USE_NLS" = "yes"; then
 124    AC_PATH_PROG(MSGFMT, msgfmt)
 125    if test "$MSGFMT" = ""; then
 126       AC_ERROR([msgfmt could not be found. Try configuring with --disable-nls])
 127    fi
 128 fi
 129 LIBINTL=
 130 if test "$USE_NLS" = "yes"; then
 131    AC_MSG_CHECKING([for functional NLS support])
 132    AC_LINK_IFELSE([AC_LANG_PROGRAM([
 133     #include <locale.h>
 134     #include <libintl.h>],[
 135     setlocale(LC_ALL, "");
 136     bindtextdomain("openconnect", "/tmp");
 137     (void)dgettext("openconnect", "foo");])],
 138     [AC_MSG_RESULT(yes)],
 139     [oldLIBS="$LIBS"
 140      LIBS="$LIBS -lintl"
 141      AC_LINK_IFELSE([AC_LANG_PROGRAM([
 142       #include <locale.h>
 143       #include <libintl.h>],[
 144       setlocale(LC_ALL, "");
 145       bindtextdomain("openconnect", "/tmp");
 146       (void)dgettext("openconnect", "foo");])],
 147       [AC_MSG_RESULT(yes (with -lintl))]
 148        LIBINTL="-lintl",
 149       [AC_MSG_RESULT(no)
 150        USE_NLS=no])
 151      LIBS="$oldLIBS"])
 152 fi
 153
 154 if test "$USE_NLS" = "yes"; then
 155    AC_SUBST(LIBINTL)
 156    AC_DEFINE(ENABLE_NLS, 1)
 157 fi
 158 AM_CONDITIONAL(USE_NLS, [test "$USE_NLS" = "yes"])
 159
 160 AC_ARG_WITH([openssl],
 161             AS_HELP_STRING([--with-openssl],
 162                            [Location of OpenSSL build dir]),
 163             [OPENSSL_CFLAGS="-I${with_openssl}/include"
 164              OPENSSL_LIBS="${with_openssl}/libssl.a ${with_openssl}/libcrypto.a -ldl -lz"
 165              AC_SUBST(OPENSSL_CFLAGS)
 166              AC_SUBST(OPENSSL_LIBS)
 167              enable_static=yes
 168              enable_shared=no],
 169             [PKG_CHECK_MODULES(OPENSSL, openssl, [],
 170                                [oldLIBS="$LIBS"
 171                                LIBS="$LIBS -lssl -lcrypto"
 172                                AC_MSG_CHECKING([for OpenSSL without pkg-config])
 173                                AC_LINK_IFELSE([AC_LANG_PROGRAM([
 174                                 #include <openssl/ssl.h>
 175                                 #include <openssl/err.h>],[
 176                                 SSL_library_init();
 177                                 ERR_clear_error();
 178                                 SSL_load_error_strings();
 179                                 OpenSSL_add_all_algorithms();])],
 180                                [AC_MSG_RESULT(yes)
 181                                 AC_SUBST([OPENSSL_LIBS], ["-lssl -lcrypto"])
 182                                 AC_SUBST([OPENSSL_CFLAGS], [])],
 183                                [AC_MSG_RESULT(no)
 184                                 AC_ERROR([Could not build against OpenSSL])])
 185                                 LIBS="$oldLIBS"])])
 186
 187 # Needs to happen after we default to static/shared libraries based on OpenSSL
 188 AC_PROG_LIBTOOL
 189
 190 PKG_CHECK_MODULES(LIBXML2, libxml-2.0)
 191
 192 PKG_CHECK_MODULES(ZLIB, zlib, [],
 193                   [oldLIBS="$LIBS"
 194                   LIBS="$LIBS -lz"
 195                   AC_MSG_CHECKING([for zlib without pkg-config])
 196                   AC_LINK_IFELSE([AC_LANG_PROGRAM([
 197                    #include <zlib.h>],[
 198                    z_stream zs;
 199                    deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED,
 200                                 -12, 9, Z_DEFAULT_STRATEGY);])],
 201                   [AC_MSG_RESULT(yes)
 202                    AC_SUBST([ZLIB_LIBS], [-lz])
 203                    AC_SUBST([ZLIB_CFLAGS], [])],
 204                   [AC_MSG_RESULT(no)
 205                    AC_ERROR([Could not build against zlib])])
 206                   LIBS="$oldLIBS"])
 207
 208 PKG_CHECK_MODULES(LIBPROXY, libproxy-1.0,
 209                 [AC_SUBST(LIBPROXY_PC, libproxy-1.0)
 210                  AC_DEFINE([LIBPROXY_HDR], ["proxy.h"])
 211                  libproxy_pkg=yes],
 212                  libproxy_pkg=no)
 213 dnl Libproxy *can* exist without a .pc file, and its header may be called
 214 dnl libproxy.h in that case.
 215 if (test "$libproxy_pkg" = "no"); then
 216    AC_MSG_CHECKING([for libproxy])
 217    oldLIBS="$LIBS"
 218    LIBS="$LIBS -lproxy"
 219    AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <libproxy.h>],
 220                            [(void)px_proxy_factory_new();])],
 221           [AC_MSG_RESULT(yes (with libproxy.h))
 222            AC_DEFINE([LIBPROXY_HDR], ["libproxy.h"])
 223            AC_SUBST([LIBPROXY_LIBS], [-lproxy])],
 224           [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <proxy.h>],
 225                                   [(void)px_proxy_factory_new();])],
 226                   [AC_MSG_RESULT(yes (with proxy.h))
 227                    AC_DEFINE([LIBPROXY_HDR], ["proxy.h"])
 228                    AC_SUBST([LIBPROXY_LIBS], [-lproxy])],
 229                    [AC_MSG_RESULT(no)])])
 230    LIBS="$oldLIBS"
 231 fi
 232
 233 AC_CHECK_HEADER([if_tun.h],
 234     [AC_DEFINE([IF_TUN_HDR], ["if_tun.h"])],
 235     [AC_CHECK_HEADER([linux/if_tun.h],
 236         [AC_DEFINE([IF_TUN_HDR], ["linux/if_tun.h"])],
 237         [AC_CHECK_HEADER([net/if_tun.h],
 238             [AC_DEFINE([IF_TUN_HDR], ["net/if_tun.h"])],
 239             [AC_CHECK_HEADER([net/tun/if_tun.h],
 240                 [AC_DEFINE([IF_TUN_HDR], ["net/tun/if_tun.h"])])])])])
 241
 242 AC_CHECK_LIB(ssl, ENGINE_by_id,
 243              AC_DEFINE(HAVE_ENGINE, [1], [OpenSSL has ENGINE support]),
 244              AC_MSG_NOTICE([Building without OpenSSL TPM ENGINE support]),
 245              ${OPENSSL_LIBS})
 246
 247 AC_CHECK_LIB(ssl, dtls1_stop_timer,
 248                   AC_DEFINE(HAVE_DTLS1_STOP_TIMER, [1], [OpenSSL has dtls1_stop_timer() function]),
 249                   ,,${OPENSSL_LIBS})
 250
 251 AC_PATH_PROG(PYTHON, [python], [], $PATH:/bin:/usr/bin)
 252 if (test -n "${ac_cv_path_PYTHON}"); then
 253    AC_SUBST(PYTHON, ${ac_cv_path_PYTHON})
 254 else
 255    AC_MSG_NOTICE([Python not found; not building HTML pages])
 256 fi
 257 AM_CONDITIONAL(BUILD_WWW, [test -n "${ac_cv_path_PYTHON}"])
 258
 259 AC_SUBST([CONFIG_STATUS_DEPENDENCIES], ['$(top_srcdir)/po/LINGUAS'])
 260 RAWLINGUAS=`sed -e "/^#/d" -e "s/#.*//" "${srcdir}/po/LINGUAS"`
 261 # Remove newlines
 262 LINGUAS=`echo $RAWLINGUAS`
 263 AC_SUBST(LINGUAS)
 264
 265 # We want version.c to depend on the files that would affect the
 266 # output of version.sh. But we cannot assume that they'll exist,
 267 # and we cannot use $(wildcard) in a non-GNU makefile. So we just
 268 # depend on the files which happen to exist at configure time.
 269 GITVERSIONDEPS=
 270 for a in .git/index .git/packed-refs .git/refs/tags .git/HEAD; do
 271     if test -r $a ; then
 272        GITVERSIONDEPS="$GITVERSIONDEPS $a"
 273     fi
 274 done
 275 AC_SUBST(GITVERSIONDEPS)
 276
 277 AC_OUTPUT(Makefile openconnect.pc po/Makefile www/Makefile \
 278           www/styles/Makefile www/inc/Makefile www/images/Makefile)