AC_INIT(openconnect, 4.99) PKG_PROG_PKG_CONFIG AC_LANG_C AC_CANONICAL_HOST AM_MAINTAINER_MODE([enable]) AM_INIT_AUTOMAKE([foreign]) m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) # Define htmldir and localedir for users of ancient autoconf building from git AC_PREREQ([2.59c], [], [AC_SUBST([htmldir], [m4_ifset([AC_PACKAGE_TARNAME], ['${datadir}/doc/${PACKAGE_TARNAME}'], ['${datadir}/doc/${PACKAGE}']) ])]) AC_PREREQ([2.60], [], [AC_SUBST([localedir], ['$(datadir)/locale'])]) # Upstream's pkg.m4 (since 0.27) offers this now, but define our own # compatible version in case the local version of pkgconfig isn't new enough. # https://bugs.freedesktop.org/show_bug.cgi?id=48743 m4_ifdef([PKG_INSTALLDIR], [PKG_INSTALLDIR], [AC_ARG_WITH([pkgconfigdir], [AS_HELP_STRING([--with-pkgconfigdir], [install directory for openconnect.pc pkg-config file])], [],[with_pkgconfigdir='$(libdir)/pkgconfig']) AC_SUBST([pkgconfigdir], [${with_pkgconfigdir}])]) AC_ARG_WITH([vpnc-script], [AS_HELP_STRING([--with-vpnc-script], [default location of vpnc-script helper])]) if test "$with_vpnc_script" = "yes" || test "$with_vpnc_script" = ""; then with_vpnc_script=/etc/vpnc/vpnc-script if ! test -x "$with_vpnc_script"; then AC_MSG_ERROR([${with_vpnc_script} does not seem to be executable.] [OpenConnect will not function correctly without a vpnc-script.] [See http://www.infradead.org/openconnect/vpnc-script.html for more details.] [] [If you are building a distribution package, please ensure that your] [packaging is correct, and that a vpnc-script will be installed when the] [user installs your package. You should provide a --with-vpnc-script=] [argument to this configure script, giving the full path where the script] [will be installed.] [] [The standard location is ${with_vpnc_script}. To bypass this error and] [build OpenConnect to use the script from this location, even though it's] [not present at the time you are building OpenConnect, pass the argument] ["--with-vpnc-script=${with_vpnc_script}"]) fi elif test "$with_vpnc_script" = "no"; then AC_ERROR([You cannot disable vpnc-script.] [OpenConnect will not function correctly without it.] [See http://www.infradead.org/openconnect/vpnc-script.html]) fi AC_DEFINE_UNQUOTED(DEFAULT_VPNCSCRIPT, "${with_vpnc_script}") AC_SUBST(DEFAULT_VPNCSCRIPT, "${with_vpnc_script}") use_openbsd_libtool= case $host_os in *linux* | *gnu*) AC_MSG_NOTICE([Applying feature macros for GNU build]) AC_DEFINE(_POSIX_C_SOURCE, 200112L) # For strcasecmp() AC_DEFINE(_BSD_SOURCE) # For asprintf() AC_DEFINE(_GNU_SOURCE) ;; *netbsd*) AC_MSG_NOTICE([Applying feature macros for NetBSD build]) AC_DEFINE(_POSIX_C_SOURCE, 200112L) AC_DEFINE(_NETBSD_SOURCE) ;; *openbsd*) AC_MSG_NOTICE([Applying feature macros for OpenBSD build]) use_openbsd_libtool=true ;; *) # On FreeBSD the only way to get vsyslog() visible is to define # *nothing*, which makes absolutely everything visible. # On Darwin enabling _POSIX_C_SOURCE breaks because # u_long and other types don't get defined. OpenBSD is similar. ;; esac symver_time= symver_getline= symver_asprintf= case $host_os in *solaris*|*sunos*) symver_time="openconnect__time;" ;; esac AC_CHECK_FUNC(fdevname_r, [AC_DEFINE(HAVE_FDEVNAME_R, 1)], []) AC_CHECK_FUNC(getline, [AC_DEFINE(HAVE_GETLINE, 1)], [symver_getline="openconnect__getline;"]) AC_CHECK_FUNC(strcasestr, [AC_DEFINE(HAVE_STRCASESTR, 1)], []) AC_CHECK_FUNC(asprintf, [AC_DEFINE(HAVE_ASPRINTF, 1)], [symver_asprintf="openconnect__asprintf;"]) if test -n "$symver_asprintf"; then AC_MSG_CHECKING([for va_copy]) AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include va_list a;],[ va_list b; va_copy(b,a); va_end(b);])], [AC_DEFINE(HAVE_VA_COPY, 1) AC_MSG_RESULT(va_copy)], [AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include va_list a;],[ va_list b; __va_copy(b,a); va_end(b);])], [AC_DEFINE(HAVE___VA_COPY, 1) AC_MSG_RESULT(__va_copy)], [AC_MSG_RESULT(no) AC_MSG_ERROR([Your system lacks asprintf() and va_copy()])]) ]) fi AC_SUBST(SYMVER_TIME, $symver_time) AC_SUBST(SYMVER_GETLINE, $symver_getline) AC_SUBST(SYMVER_ASPRINTF, $symver_asprintf) AS_COMPILER_FLAGS(CFLAGS, "-Wall -Wextra -Wno-missing-field-initializers -Wno-sign-compare -Wno-unused-parameter -Werror=pointer-to-int-cast -Wdeclaration-after-statement -Werror-implicit-function-declaration -Wformat-nonliteral -Wformat-security -Winit-self -Wmissing-declarations -Wmissing-include-dirs -Wnested-externs -Wpointer-arith -Wwrite-strings") AC_CHECK_FUNC(socket, [], AC_CHECK_LIB(socket, socket, [], AC_ERROR(Cannot find socket() function))) AC_CHECK_FUNC(inet_aton, [], AC_CHECK_LIB(nsl, inet_aton, [], AC_ERROR(Cannot find inet_aton() function))) AC_ENABLE_SHARED AC_DISABLE_STATIC AC_ARG_ENABLE([nls], [ --disable-nls do not use Native Language Support], [USE_NLS=$enableval], [USE_NLS=yes]) LIBINTL= if test "$USE_NLS" = "yes"; then AC_PATH_PROG(MSGFMT, msgfmt) if test "$MSGFMT" = ""; then AC_ERROR([msgfmt could not be found. Try configuring with --disable-nls]) fi fi LIBINTL= if test "$USE_NLS" = "yes"; then AC_MSG_CHECKING([for functional NLS support]) AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include #include ],[ setlocale(LC_ALL, ""); bindtextdomain("openconnect", "/tmp"); (void)dgettext("openconnect", "foo");])], [AC_MSG_RESULT(yes)], [oldLIBS="$LIBS" LIBS="$LIBS -lintl" AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include #include ],[ setlocale(LC_ALL, ""); bindtextdomain("openconnect", "/tmp"); (void)dgettext("openconnect", "foo");])], [AC_MSG_RESULT(yes (with -lintl))] LIBINTL="-lintl", [LIBS="$LIBS -liconv" AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include #include ],[ setlocale(LC_ALL, ""); bindtextdomain("openconnect", "/tmp"); (void)dgettext("openconnect", "foo");])], [AC_MSG_RESULT(yes (with -lintl -liconv))] LIBINTL="-lintl", [AC_MSG_RESULT(no) USE_NLS=no]) LIBS="$oldLIBS"])]) fi if test "$USE_NLS" = "yes"; then AC_SUBST(LIBINTL) AC_DEFINE(ENABLE_NLS, 1) fi AM_CONDITIONAL(USE_NLS, [test "$USE_NLS" = "yes"]) AC_ARG_WITH([system-cafile], AS_HELP_STRING([--with-system-cafile], [Location of the default system CA certificate file for old (<3.0.20) GnuTLS versions])) # We will use GnuTLS by default if it's present, and if GnuTLS doesn't # have DTLS support then we'll *also* use OpenSSL for that, but it # appears *only* only in the openconnect executable and not the # library (hence shouldn't be a problem for GPL'd programs using # libopenconnect). # # If built with --without-openssl then we'll even eschew OpenSSL for # DTLS support and will build without any DTLS support at all if # GnuTLS cannot manage. # # You can build without GnuTLS, even if its pkg-config file is present # on the system, by using '--without-gnutls' AC_ARG_WITH([gnutls], AS_HELP_STRING([--without-gnutls], [Do not attempt to use GnuTLS; use OpenSSL instead])) AC_ARG_WITH([openssl], AS_HELP_STRING([--with-openssl], [Location of OpenSSL build dir])) ssl_library= if test "$with_gnutls" = "yes" || test "$with_gnutls" = ""; then PKG_CHECK_MODULES(GNUTLS, gnutls, [found_gnutls=yes], [found_gnutls=no]) if test "$found_gnutls" = "yes"; then if ! $PKG_CONFIG --atleast-version=2.12.16 gnutls; then found_gnutls=old fi fi case $with_gnutls$found_gnutls in yesold) AC_MSG_ERROR([Your GnuTLS is too old. At least v2.12.16 is required]) ;; yesno) AC_MSG_ERROR([GnuTLS requested but no package 'gnutls' found]) ;; old) AC_MSG_WARN([GnuTLS is too old. At least v2.12.16 is required. Falling back to OpenSSL]) ;; yes) with_gnutls=yes ;; esac elif test "$with_gnutls" != "no"; then AC_MSG_ERROR([Values other than 'yes' or 'no' for --with-gnutls are not supported]) fi if test "$with_gnutls" = "yes"; then oldlibs="$LIBS" LIBS="$LIBS $GNUTLS_LIBS" AC_CHECK_FUNC(gnutls_dtls_set_data_mtu, [AC_DEFINE(HAVE_GNUTLS_DTLS_SET_DATA_MTU, 1)], []) AC_CHECK_FUNC(gnutls_certificate_set_x509_system_trust, [AC_DEFINE(HAVE_GNUTLS_CERTIFICATE_SET_X509_SYSTEM_TRUST, 1)], []) if test "$ac_cv_func_gnutls_certificate_set_x509_system_trust" != "yes"; then # We will need to tell GnuTLS the path to the system CA file. if test "$with_system_cafile" = "yes" || test "$with_system_cafile" = ""; then unset with_system_cafile AC_MSG_CHECKING([For location of system CA trust file]) for file in /etc/ssl/certs/ca-certificates.crt \ /etc/pki/tls/cert.pem \ /usr/local/share/certs/ca-root-nss.crt \ /etc/ssl/cert.pem; do if grep 'BEGIN CERTIFICATE-----' $file >/dev/null 2>&1; then with_system_cafile=${file} break fi done AC_MSG_RESULT([${with_system_cafile-NOT FOUND}]) elif test "$with_system_cafile" = "no"; then AC_MSG_ERROR([You cannot disable the system CA certificate file.]) fi if test "$with_system_cafile" = ""; then AC_MSG_ERROR([Unable to find a standard system CA certificate file.] [Your GnuTLS requires a path to a CA certificate store. This is a file] [which contains a list of the Certificate Authorities which are trusted.] [Most distributions ship with this file in a standard location, but none] [the known standard locations exist on your system. You should provide a] [--with-system-cafile= argument to this configure script, giving the full] [path to a default CA certificate file for GnuTLS to use. Also, please] [send full details of your system, including 'uname -a' output and the] [location of the system CA certificate store on your system, to the] [openconnect-devel@lists.infradead.org mailing list.]) fi AC_DEFINE_UNQUOTED([DEFAULT_SYSTEM_CAFILE], ["$with_system_cafile"]) fi AC_CHECK_FUNC(gnutls_pkcs12_simple_parse, [AC_DEFINE(HAVE_GNUTLS_PKCS12_SIMPLE_PARSE, 1)], []) AC_CHECK_FUNC(gnutls_certificate_set_key, [AC_DEFINE(HAVE_GNUTLS_CERTIFICATE_SET_KEY, 1)], []) AC_CHECK_FUNC(gnutls_pubkey_verify_data2, [AC_DEFINE(HAVE_GNUTLS_PUBKEY_VERIFY_DATA2, 1)], []) if test "$with_openssl" = "" || test "$with_openssl" = "no"; then AC_CHECK_FUNC(gnutls_session_set_premaster, [have_gnutls_dtls=yes], [have_gnutls_dtls=no]) else have_gnutls_dtls=no fi if test "$have_gnutls_dtls" = "yes"; then if test "$with_openssl" = "" || test "$with_openssl" = "no"; then # They either said no OpenSSL or didn't specify, and GnuTLS can # do DTLS, so just use GnuTLS. AC_DEFINE(HAVE_GNUTLS_SESSION_SET_PREMASTER, 1) ssl_library=gnutls with_openssl=no else # They specifically asked for OpenSSL, so use it for DTLS even # though GnuTLS could manage. ssl_library=both fi else if test "$with_openssl" = "no"; then # GnuTLS doesn't have DTLS, but they don't want OpenSSL. So build # without DTLS support at all. ssl_library=gnutls else # GnuTLS doesn't have DTLS so use OpenSSL for it, but GnuTLS for # the TCP connection (and thus in the library). ssl_library=both fi fi AC_CHECK_FUNC(gnutls_pkcs11_add_provider, [PKG_CHECK_MODULES(P11KIT, p11-kit-1, [AC_DEFINE(HAVE_P11KIT) AC_SUBST(P11KIT_PC, p11-kit-1)], [:])], []) LIBS="$oldlibs -ltspi" AC_MSG_CHECKING([for tss library]) AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include #include ],[ int err = Tspi_Context_Create((void *)0); Trspi_Error_String(err);])], [AC_MSG_RESULT(yes) AC_SUBST([TSS_LIBS], [-ltspi]) AC_SUBST([TSS_CFLAGS], []) AC_DEFINE(HAVE_TROUSERS, 1)], [AC_MSG_RESULT(no)]) LIBS="$oldlibs" fi if test "$with_openssl" = "yes" || test "$with_openssl" = "" || test "$ssl_library" = "both"; then PKG_CHECK_MODULES(OPENSSL, openssl, [], [oldLIBS="$LIBS" LIBS="$LIBS -lssl -lcrypto" AC_MSG_CHECKING([for OpenSSL without pkg-config]) AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include #include ],[ SSL_library_init(); ERR_clear_error(); SSL_load_error_strings(); OpenSSL_add_all_algorithms();])], [AC_MSG_RESULT(yes) AC_SUBST([OPENSSL_LIBS], ["-lssl -lcrypto"]) AC_SUBST([OPENSSL_CFLAGS], [])], [AC_MSG_RESULT(no) if test "$ssl_library" = "both"; then ssl_library="gnutls"; else AC_ERROR([Could not build against OpenSSL]); fi]) LIBS="$oldLIBS"]) if test "$ssl_library" != "both" && test "$ssl_library" != "gnutls"; then ssl_library=openssl fi elif test "$with_openssl" != "no" ; then OPENSSL_CFLAGS="-I${with_openssl}/include" OPENSSL_LIBS="${with_openssl}/libssl.a ${with_openssl}/libcrypto.a -ldl -lz" AC_SUBST(OPENSSL_CFLAGS) AC_SUBST(OPENSSL_LIBS) enable_static=yes enable_shared=no AC_DEFINE(DTLS_OPENSSL, 1) if test "$ssl_library" != "both"; then ssl_library=openssl fi fi case "$ssl_library" in gnutls) AC_DEFINE(OPENCONNECT_GNUTLS, 1) AC_DEFINE(DTLS_GNUTLS, 1) AC_SUBST(SSL_LIBRARY, [gnutls]) AC_SUBST(SSL_LIBS, ['$(GNUTLS_LIBS)']) AC_SUBST(SSL_CFLAGS, ['$(GNUTLS_CFLAGS)']) ;; openssl) AC_DEFINE(OPENCONNECT_OPENSSL, 1) AC_DEFINE(DTLS_OPENSSL, 1) AC_SUBST(SSL_LIBRARY, [openssl]) AC_SUBST(SSL_LIBS, ['$(OPENSSL_LIBS)']) AC_SUBST(SSL_CFLAGS, ['$(OPENSSL_CFLAGS)']) AC_SUBST(SYMVER_PRINT_ERR, ["openconnect_print_err_cb;"]) ;; both) # GnuTLS for TCP, OpenSSL for DTLS AC_DEFINE(OPENCONNECT_GNUTLS, 1) AC_DEFINE(DTLS_OPENSSL, 1) AC_SUBST(SSL_LIBRARY, [gnutls]) AC_SUBST(SSL_LIBS, ['$(GNUTLS_LIBS)']) AC_SUBST(SSL_CFLAGS, ['$(GNUTLS_CFLAGS)']) AC_SUBST(DTLS_SSL_LIBS, ['$(OPENSSL_LIBS)']) AC_SUBST(DTLS_SSL_CFLAGS, ['$(OPENSSL_CFLAGS)']) AC_SUBST(SYMVER_PRINT_ERR, ["openconnect_print_err_cb;"]) ;; *) AC_MSG_ERROR([Neither OpenSSL nor GnuTLS selected for SSL.]) ;; esac AM_CONDITIONAL(OPENCONNECT_GNUTLS, [ test "$ssl_library" != "openssl" ]) AM_CONDITIONAL(OPENCONNECT_OPENSSL, [ test "$ssl_library" = "openssl" ]) # Needs to happen after we default to static/shared libraries based on OpenSSL AC_PROG_LIBTOOL if test "$use_openbsd_libtool" = "true" && test -x /usr/bin/libtool; then echo using OpenBSD libtool LIBTOOL=/usr/bin/libtool fi AM_CONDITIONAL(OPENBSD_LIBTOOL, [ test "$use_openbsd_libtool" = "true" ]) # Ick. This seems like it's likely to be very fragile, but I can't see a better # way. I shall console myself with the observation that the failure mode isn't # particularly horrible — you just don't get symbol versioning if it fails. symvers=no if test "$enable_shared" = "yes" ; then AC_MSG_CHECKING([if library symbol versioning is available]); echo 'FOO { global: foo; local: *; };' > conftest.map echo 'int foo = 0;' > conftest.$ac_ext if AC_TRY_EVAL(ac_compile); then soname=conftest libobjs=conftest.$ac_objext if AC_TRY_EVAL(archive_cmds ${wl}--version-script ${wl}conftest.map); then AC_SUBST(VERSION_SCRIPT_ARG, [--version-script]) symvers="yes (with --version-script)" elif AC_TRY_EVAL(archive_cmds ${wl}-M ${wl}conftest.map); then AC_SUBST(VERSION_SCRIPT_ARG, [-M]) symvers="yes (with -M)" fi fi AC_MSG_RESULT(${symvers}) fi AM_CONDITIONAL(HAVE_SYMBOL_VERSIONING, [test "${symvers}" != "no"]) PKG_CHECK_MODULES(LIBXML2, libxml-2.0) PKG_CHECK_MODULES(ZLIB, zlib, [AC_SUBST(ZLIB_PC, [zlib])], [oldLIBS="$LIBS" LIBS="$LIBS -lz" AC_MSG_CHECKING([for zlib without pkg-config]) AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include ],[ z_stream zs; deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -12, 9, Z_DEFAULT_STRATEGY);])], [AC_MSG_RESULT(yes) AC_SUBST([ZLIB_LIBS], [-lz]) AC_SUBST([ZLIB_CFLAGS], [])], [AC_MSG_RESULT(no) AC_ERROR([Could not build against zlib])]) LIBS="$oldLIBS"]) PKG_CHECK_MODULES(LIBPROXY, libproxy-1.0, [AC_SUBST(LIBPROXY_PC, libproxy-1.0) AC_DEFINE([LIBPROXY_HDR], ["proxy.h"]) libproxy_pkg=yes], libproxy_pkg=no) dnl Libproxy *can* exist without a .pc file, and its header may be called dnl libproxy.h in that case. if (test "$libproxy_pkg" = "no"); then AC_MSG_CHECKING([for libproxy]) oldLIBS="$LIBS" LIBS="$LIBS -lproxy" AC_LINK_IFELSE([AC_LANG_PROGRAM([#include ], [(void)px_proxy_factory_new();])], [AC_MSG_RESULT(yes (with libproxy.h)) AC_DEFINE([LIBPROXY_HDR], ["libproxy.h"]) AC_SUBST([LIBPROXY_LIBS], [-lproxy])], [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include ], [(void)px_proxy_factory_new();])], [AC_MSG_RESULT(yes (with proxy.h)) AC_DEFINE([LIBPROXY_HDR], ["proxy.h"]) AC_SUBST([LIBPROXY_LIBS], [-lproxy])], [AC_MSG_RESULT(no)])]) LIBS="$oldLIBS" fi PKG_CHECK_MODULES(LIBSTOKEN, stoken, [AC_SUBST(LIBSTOKEN_PC, stoken) AC_DEFINE([LIBSTOKEN_HDR], ["stoken.h"]) libstoken_pkg=yes], libstoken_pkg=no) AC_CHECK_HEADER([if_tun.h], [AC_DEFINE([IF_TUN_HDR], ["if_tun.h"])], [AC_CHECK_HEADER([linux/if_tun.h], [AC_DEFINE([IF_TUN_HDR], ["linux/if_tun.h"])], [AC_CHECK_HEADER([net/if_tun.h], [AC_DEFINE([IF_TUN_HDR], ["net/if_tun.h"])], [AC_CHECK_HEADER([net/tun/if_tun.h], [AC_DEFINE([IF_TUN_HDR], ["net/tun/if_tun.h"])])])])]) if test "$ssl_library" = "openssl" || test "$ssl_library" = "both"; then oldLIBS="$LIBS" LIBS="$LIBS $OPENSSL_LIBS" if test "$ssl_library" = "openssl"; then AC_MSG_CHECKING([for ENGINE_by_id() in OpenSSL]) AC_LINK_IFELSE([AC_LANG_PROGRAM([#include ], [ENGINE_by_id("foo");])], [AC_MSG_RESULT(yes) AC_DEFINE(HAVE_ENGINE, [1], [OpenSSL has ENGINE support])], [AC_MSG_RESULT(no) AC_MSG_NOTICE([Building without OpenSSL TPM ENGINE support])]) fi AC_MSG_CHECKING([for dtls1_stop_timer() in OpenSSL]) AC_LINK_IFELSE([AC_LANG_PROGRAM([#include #include extern void dtls1_stop_timer(SSL *);], [dtls1_stop_timer(NULL);])], [AC_MSG_RESULT(yes) AC_DEFINE(HAVE_DTLS1_STOP_TIMER, [1], [OpenSSL has dtls1_stop_timer() function])], [AC_MSG_RESULT(no)]) LIBS="$oldLIBS" fi AC_PATH_PROG(PYTHON, [python], [], $PATH:/bin:/usr/bin) if (test -n "${ac_cv_path_PYTHON}"); then AC_SUBST(PYTHON, ${ac_cv_path_PYTHON}) else AC_MSG_NOTICE([Python not found; not building HTML pages]) fi AM_CONDITIONAL(BUILD_WWW, [test -n "${ac_cv_path_PYTHON}"]) AC_SUBST([CONFIG_STATUS_DEPENDENCIES], ['$(top_srcdir)/po/LINGUAS $(top_srcdir)/openconnect.h ${top_srcdir}/libopenconnect.map.in']) RAWLINGUAS=`sed -e "/^#/d" -e "s/#.*//" "${srcdir}/po/LINGUAS"` # Remove newlines LINGUAS=`echo $RAWLINGUAS` AC_SUBST(LINGUAS) APIMAJOR="`sed -n 's/^#define OPENCONNECT_API_VERSION_MAJOR \(.*\)/\1/p' ${srcdir}/openconnect.h`" APIMINOR="`sed -n 's/^#define OPENCONNECT_API_VERSION_MINOR \(.*\)/\1/p' ${srcdir}/openconnect.h`" AC_SUBST(APIMAJOR) AC_SUBST(APIMINOR) # We want version.c to depend on the files that would affect the # output of version.sh. But we cannot assume that they'll exist, # and we cannot use $(wildcard) in a non-GNU makefile. So we just # depend on the files which happen to exist at configure time. GITVERSIONDEPS= for a in ${srcdir}/.git/index ${srcdir}/.git/packed-refs \ ${srcdir}/.git/refs/tags ${srcdir}/.git/HEAD; do if test -r $a ; then GITVERSIONDEPS="$GITVERSIONDEPS $a" fi done AC_SUBST(GITVERSIONDEPS) AC_OUTPUT(Makefile openconnect.pc po/Makefile www/Makefile libopenconnect.map \ openconnect.8 www/styles/Makefile www/inc/Makefile www/images/Makefile)