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configure.ac
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configure.ac
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AC_INIT([openconnect], [9.12])
AC_LANG([C])
AC_CONFIG_HEADERS([config.h])
m4_ifdef([AC_CONFIG_MACRO_DIRS], [AC_CONFIG_MACRO_DIRS([m4])])
PKG_PROG_PKG_CONFIG
AC_CANONICAL_HOST
AM_MAINTAINER_MODE([enable])
AM_INIT_AUTOMAKE([foreign tar-ustar subdir-objects])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AC_PREREQ([2.62])
# 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}])])
use_openbsd_libtool=
symver_time=
symver_getline=
symver_asprintf=
symver_vasprintf=
symver_win32_strerror=
symver_win32_setenv=
# Autoconf is stupid and if the first time it needs to find the C compiler
# is conditional (as it is here for some of the MinGW checks), it forgets
# to ever look for one in the other code paths. Do it explicitly here.
AC_PROG_CC
# Before autoconf 2.70, AC_PROG_CC_C99 appears to be necessary for some
# compilers if you want C99 support. Starting with 2.70, it is obsolete.
m4_version_prereq([2.70], [:], [AC_PROG_CC_C99])
default_browser=xdg-open
have_vhost=no
case $host_os in
*linux* | *gnu* | *nacl*)
have_vhost=yes
AC_MSG_NOTICE([Applying feature macros for GNU build])
AC_DEFINE(_GNU_SOURCE, 1, [_GNU_SOURCE])
;;
*netbsd*)
AC_MSG_NOTICE([Applying feature macros for NetBSD build])
AC_DEFINE(_POSIX_C_SOURCE, 200112L, [_POSIX_C_SOURCE])
AC_DEFINE(_NETBSD_SOURCE, 1, [_NETBSD_SOURCE])
;;
*openbsd*)
AC_MSG_NOTICE([Applying feature macros for OpenBSD build])
use_openbsd_libtool=true
;;
*solaris*|*sunos*)
AC_MSG_NOTICE([Applying workaround for broken SunOS time() function])
AC_DEFINE(HAVE_SUNOS_BROKEN_TIME, 1, [On SunOS time() can go backwards])
symver_time="openconnect__time;"
;;
*mingw32*|*mingw64*|*msys*)
AC_MSG_NOTICE([Applying feature macros for MinGW/Windows build])
# For GetVolumeInformationByHandleW() which is Vista+
AC_DEFINE(_WIN32_WINNT, 0x600, [Windows API version])
have_win=yes
# For asprintf()
AC_DEFINE(_GNU_SOURCE, 1, [_GNU_SOURCE])
symver_win32_strerror="openconnect__win32_strerror;"
symver_win32_setenv="openconnect__win32_setenv;"
# Win32 does have the SCard API
system_pcsc_libs="-lwinscard"
system_pcsc_cflags=
AC_CHECK_TOOL([WINDRES], [windres], [])
AC_ARG_ENABLE([nsis-installer],
AS_HELP_STRING([--disable-nsis-installer], [Do not build an NSIS installer]),
[USE_NSIS=$enableval], [USE_NSIS=yes])
if test "$USE_NSIS" = "yes"; then
AC_CHECK_TOOL([MAKENSIS], [makensis], [])
fi
default_browser=open
case $host_cpu in
x86_64|amd64)
wintun_arch=amd64
;;
*86)
wintun_arch=x86
;;
aarch64|arm64)
wintun_arch=arm64
;;
arm*)
wintun_arch=arm
;;
esac
AC_SUBST(WINTUN_ARCH, "$wintun_arch")
# Per https://github.com/MisterDA/ocaml/commit/5855ce5ffd931a2802d5b9a5b2987ab0b276fd0a,
# "The header file <afunix.h> declares the `struct sockaddr_un` type, but hasn't been picked by mingw-w64."
AC_CHECK_HEADER([afunix.h], AC_DEFINE([HAVE_AF_UNIX_H], 1, [MinGW has afunix.h]))
# MINGW_HAS_SECURE_API may only work on newer MinGW:
# https://stackoverflow.com/a/51977723
AC_DEFINE(MINGW_HAS_SECURE_API, 1, [Try to make getenv_s and _putenv_s available])
AC_CHECK_DECL(_putenv_s, [AC_DEFINE(HAVE_PUTENV_S_DECL, 1, [MinGW declares _putenv_s])], [], [#include <sec_api/stdlib_s.h>])
AC_CHECK_DECL(getenv_s, [AC_DEFINE(HAVE_GETENV_S_DECL, 1, [MinGW declares getenv_s])], [], [#include <sec_api/stdlib_s.h>])
;;
*darwin*)
system_pcsc_libs="-Wl,-framework -Wl,PCSC"
system_pcsc_cflags=
default_browser=open
;;
*)
# 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 <sys/mount.h> because
# u_long and other types don't get defined. OpenBSD is similar.
;;
esac
AM_CONDITIONAL(OPENCONNECT_WIN32, [ test "$have_win" = "yes" ])
if test "$have_win" = "yes"; then
#required for vpnc-script-win.js and wintun
AC_CHECK_PROG(have_curl, curl, yes)
AC_CHECK_PROG(have_unzip, unzip, yes)
AC_CHECK_PROG(have_jq, jq, yes)
if test "${wintun_arch}" != ""; then
if test "${have_curl}" != "yes"; then
wintun_arch=
else
if test "${have_unzip}" != "yes"; then
wintun_arch=
fi
fi
fi
fi
build_nsis=no
if test "$MAKENSIS" != ""; then
#disable NSIS build if we cannot extract wintun
if test "${wintun_arch}" != ""; then
build_nsis=yes
else
AC_MSG_WARN([Disabling NSIS installer since wintun cannot be included])
fi
fi
AM_CONDITIONAL(BUILD_NSIS, [ test "$build_nsis" = "yes" ])
AM_CONDITIONAL(OPENCONNECT_WINTUN, [ test "${wintun_arch}" != "" ])
AC_ARG_WITH([external-browser],
[AS_HELP_STRING([--with-external-browser],
[command to use for spawning external web browser])])
if test "$with_external_browser" = "yes" || test "$with_external_browser" = ""; then
if test "$have_win" != ""; then
with_external_browser=${default_browser}
elif test "$default_browser" != ""; then
AC_MSG_CHECKING([for ${default_browser}])
AC_PATH_PROG(with_external_browser, ${default_browser}, no)
else
with_external_browser=no
fi
fi
if test "$with_external_browser" != "no"; then
if test -x "${with_external_browser}" -o -n "$have_win"; then
AC_DEFINE_UNQUOTED(DEFAULT_EXTERNAL_BROWSER, "${with_external_browser}", [External browser executable])
else
AC_MSG_ERROR([${with_external_browser} does not seem to be executable.])
fi
fi
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
AC_MSG_CHECKING([for vpnc-script in standard locations])
if test "$have_win" = "yes"; then
with_vpnc_script=vpnc-script-win.js
#downloading and amending vpnc-script-win.js depends on curl and jq. Disable it if they are missing, which *should* cause configure to stop
if test "${have_curl}" != "yes"; then
with_vpnc_script=no
else
if test "${have_jq}" != "yes"; then
with_vpnc_script=no
fi
fi
AC_MSG_RESULT([${with_vpnc_script}])
else
for with_vpnc_script in /usr/local/share/vpnc-scripts/vpnc-script /usr/local/sbin/vpnc-script /usr/share/vpnc-scripts/vpnc-script /usr/sbin/vpnc-script /etc/vpnc/vpnc-script; do
if test -x "$with_vpnc_script"; then
break
fi
done
if ! test -x "$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 https://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 ${with_vpnc_script}. To bypass this error and]
[build OpenConnect to use the script from this location, even though it is]
[not present at the time you are building OpenConnect, pass the argument]
["--with-vpnc-script=${with_vpnc_script}"])
else
AC_MSG_RESULT([${with_vpnc_script}])
fi
fi
fi
if test "$with_vpnc_script" = "no"; then
AC_MSG_ERROR(You cannot disable vpnc-script.
OpenConnect will not function correctly without it.
See https://www.infradead.org/openconnect/vpnc-script.html)
elif test "$have_win" = "yes"; then
# Oh Windows how we hate thee. If user specifies a vpnc-script and it contains
# backslashes, double them all up to survive escaping.
with_vpnc_script="$(echo "${with_vpnc_script}" | sed s/\\\\/\\\\\\\\/g)"
fi
AC_DEFINE_UNQUOTED(DEFAULT_VPNCSCRIPT, "${with_vpnc_script}", [Default vpnc-script locatin])
AC_SUBST(DEFAULT_VPNCSCRIPT, "${with_vpnc_script}")
AC_CHECK_FUNC(fdevname_r, [AC_DEFINE(HAVE_FDEVNAME_R, 1, [Have fdevname_r() function])], [])
AC_CHECK_FUNC(statfs, [AC_DEFINE(HAVE_STATFS, 1, [Have statfs() function])], [])
AC_CHECK_FUNC(getline, [AC_DEFINE(HAVE_GETLINE, 1, [Have getline() function])],
[symver_getline="openconnect__getline;"])
AC_CHECK_FUNC(strcasestr, [AC_DEFINE(HAVE_STRCASESTR, 1, [Have strcasestr() function])], [])
AC_CHECK_FUNC(strndup, [AC_DEFINE(HAVE_STRNDUP, 1, [Have strndup() function])], [])
AC_CHECK_FUNC(strchrnul, [AC_DEFINE(HAVE_STRCHRNUL, 1, [Have strchrnul() function])], [])
AC_CHECK_FUNC(asprintf, [AC_DEFINE(HAVE_ASPRINTF, 1, [Have asprintf() function])],
[symver_asprintf="openconnect__asprintf;"])
AC_CHECK_FUNC(vasprintf, [AC_DEFINE(HAVE_VASPRINTF, 1, [Have vasprintf() function])],
[symver_vasprintf="openconnect__vasprintf;"])
AC_MSG_CHECKING([for __builtin_clz])
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[return __builtin_clz(0xffffffff);])],
[AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BUILTIN_CLZ, 1, [Have __builtin_clz()])],
[AC_MSG_RESULT(no)])
if test -n "$symver_vasprintf"; then
AC_MSG_CHECKING([for va_copy])
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <stdarg.h>
va_list a;],[
va_list b;
va_copy(b,a);
va_end(b);])],
[AC_DEFINE(HAVE_VA_COPY, 1, [Have va_copy()])
AC_MSG_RESULT(va_copy)],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <stdarg.h>
va_list a;],[
va_list b;
__va_copy(b,a);
va_end(b);])],
[AC_DEFINE(HAVE___VA_COPY, 1, [Have __va_copy()])
AC_MSG_RESULT(__va_copy)],
[AC_MSG_RESULT(no)
AC_MSG_ERROR([Your system lacks vasprintf() and va_copy()])])
])
fi
AC_SUBST(SYMVER_TIME, $symver_time)
AC_SUBST(SYMVER_GETLINE, $symver_getline)
AC_SUBST(SYMVER_ASPRINTF, $symver_asprintf)
AC_SUBST(SYMVER_VASPRINTF, $symver_vasprintf)
AC_SUBST(SYMVER_WIN32_STRERROR, $symver_win32_strerror)
AC_SUBST(SYMVER_WIN32_SETENV, $symver_win32_setenv)
AS_COMPILER_FLAGS(WFLAGS,
"-Wall
-Wextra
-Wno-missing-field-initializers
-Wno-sign-compare
-Wno-unused-parameter
-Werror=pointer-to-int-cast
-Werror-implicit-function-declaration
-Wformat-nonliteral
-Wformat-security
-Winit-self
-Wmissing-declarations
-Wmissing-include-dirs
-Wnested-externs
-Wpointer-arith
-Wwrite-strings")
AC_SUBST(WFLAGS, [$WFLAGS])
oldCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $WFLAGS"
AC_MSG_CHECKING([For memset_s])
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#define __STDC_WANT_LIB_EXT1__ 1
#include <string.h>],[[
unsigned char *foo[16];
memset_s(foo, 16, 0, 16);]])],
[AC_MSG_RESULT([yes])
AC_DEFINE(__STDC_WANT_LIB_EXT1__, 1, [To request memset_s])
AC_DEFINE(HAVE_MEMSET_S, 1, [Have memset_s() function])],
[AC_MSG_RESULT([no])
AC_CHECK_FUNC(explicit_memset,
[AC_DEFINE(HAVE_EXPLICIT_MEMSET, 1, [Have explicit_memset() function])],
[AC_CHECK_FUNC(explicit_bzero,
[AC_DEFINE(HAVE_EXPLICIT_BZERO, 1, [Have explicit_bzero() function])],
[])
])
])
CFLAGS="$oldCFLAGS"
AC_MSG_CHECKING([For localtime_r])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <time.h>],[[
struct tm tm;
time_t t = 0;
localtime_r(&t, &tm);]])],
[AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_LOCALTIME_R, 1, [Have localtime_r() function])],
[AC_MSG_RESULT([no])])
if test "$have_win" = yes; then
# Checking "properly" for __attribute__((dllimport,stdcall)) functions is non-trivial
LIBS="$LIBS -lws2_32 -lshlwapi -lsecur32 -liphlpapi"
AC_MSG_CHECKING([For localtime_s])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <time.h>],[[
struct tm tm;
time_t t = 0;
localtime_s(&tm, (time_t)0);]])],
[AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_LOCALTIME_S, 1, [Have localtime_s() function])],
[AC_MSG_RESULT([no])])
else
AC_CHECK_FUNC(socket, [], AC_CHECK_LIB(socket, socket, [], AC_MSG_ERROR(Cannot find socket() function)))
fi
have_inet_aton=yes
AC_CHECK_FUNC(inet_aton, [], AC_CHECK_LIB(nsl, inet_aton, [], have_inet_aton=no))
if test "$have_inet_aton" = "yes"; then
AC_DEFINE(HAVE_INET_ATON, 1, [Have inet_aton()])
fi
AC_MSG_CHECKING([for IPV6_PATHMTU socket option])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>],[
int foo = IPV6_PATHMTU; (void)foo;])],
[AC_DEFINE(HAVE_IPV6_PATHMTU, 1, [Have IPV6_PATHMTU socket option])
AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])
AC_CHECK_FUNC(__android_log_vprint, [], AC_CHECK_LIB(log, __android_log_vprint, [], []))
AC_ENABLE_SHARED
AC_DISABLE_STATIC
AC_CHECK_FUNC(nl_langinfo, [AC_DEFINE(HAVE_NL_LANGINFO, 1, [Have nl_langinfo() function])], [])
AC_CHECK_FUNC(posix_spawn, [AC_DEFINE(HAVE_POSIX_SPAWN, 1, [Have posix_spawn() function])], [])
if test "$ac_cv_func_nl_langinfo" = "yes"; then
AM_ICONV
if test "$am_cv_func_iconv" = "yes"; then
AC_SUBST(ICONV_LIBS, [$LTLIBICONV])
AC_SUBST(ICONV_CFLAGS, [$INCICONV])
AC_DEFINE(HAVE_ICONV, 1, [Have iconv() function])
fi
fi
AM_CONDITIONAL(OPENCONNECT_ICONV, [test "$am_cv_func_iconv" = "yes"])
AC_ARG_ENABLE([nls],
AS_HELP_STRING([--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 "$MSGFMT" = ""; then
AC_MSG_ERROR(msgfmt could not be found. Try configuring with --disable-nls)
fi
fi
LIBINTL=
if test "$USE_NLS" = "yes"; then
AC_MSG_CHECKING([for functional NLS support])
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <locale.h>
#include <libintl.h>],[
setlocale(LC_ALL, "");
bindtextdomain("openconnect", "/tmp");
(void)dgettext("openconnect", "foo");])],
[AC_MSG_RESULT(yes)],
[AC_LIB_LINKFLAGS_BODY([intl])
oldLIBS="$LIBS"
LIBS="$LIBINTL $LIBS"
oldCFLAGS="$LIBS"
CFLAGS="$CFLAGS $INCINTL"
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <locale.h>
#include <libintl.h>],[
setlocale(LC_ALL, "");
bindtextdomain("openconnect", "/tmp");
(void)dgettext("openconnect", "foo");])],
[AC_MSG_RESULT(yes (with $INCINTL $LIBINTL))],
[AC_MSG_RESULT(no)
USE_NLS=no])
LIBS="$oldLIBS"])
fi
if test "$USE_NLS" = "yes"; then
AC_SUBST(INTL_LIBS, [$LTLIBINTL])
AC_SUBST(INTL_CFLAGS, [$INCINTL])
AC_DEFINE(ENABLE_NLS, 1, [Enable NLS support])
fi
AM_CONDITIONAL(USE_NLS, [test "$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. We used to support
# using GnuTLS for the TLS connections and OpenSSL for DTLS, but none
# of the reasons for that make sense any more.
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=
esp=
dtls=
hpke=
if test "$with_openssl" != "" -a "$with_openssl" != "no"; then
if test "$with_gnutls" = ""; then
with_gnutls=no
elif test "$with_gnutls" = "yes"; then
AC_MSG_ERROR([You cannot choose both GnuTLS and OpenSSL.])
fi
fi
# First, check if GnuTLS exists and is usable
if test "$with_gnutls" = "yes" || test "$with_gnutls" = ""; then
PKG_CHECK_MODULES(GNUTLS, gnutls,
[if ! $PKG_CONFIG --atleast-version=3.2.10 gnutls; then
AC_MSG_WARN([Your GnuTLS is too old. At least v3.2.10 is required])
else
ssl_library=GnuTLS
fi], [:])
elif test "$with_gnutls" != "no"; then
AC_MSG_ERROR(Values other than 'yes' or 'no' for --with-gnutls are not supported)
fi
# Do we need to look for OpenSSL?
if test "$ssl_library" = ""; then
if test "$with_gnutls" = "yes" -o "$with_openssl" = "no"; then
AC_MSG_ERROR([Suitable GnuTLS required but not found])
elif test "$with_openssl" = "yes" -o "$with_openssl" = ""; then
PKG_CHECK_MODULES(OPENSSL, openssl, [AC_SUBST(SSL_PC, [openssl])],
[oldLIBS="$LIBS"
LIBS="-lssl -lcrypto $LIBS"
AC_MSG_CHECKING([for OpenSSL without pkg-config])
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#include <openssl/err.h>],[
SSL_library_init();
ERR_clear_error();
SSL_load_error_strings();
OpenSSL_add_all_algorithms();])],
[AC_MSG_RESULT(yes)
AC_SUBST([OPENSSL_LIBS], ["-lssl -lcrypto"])
AC_SUBST([OPENSSL_CFLAGS], [])]
AC_SUBST([openssl_pc_libs], [$OPENSSL_LIBS]),
[AC_MSG_RESULT(no)
AC_MSG_ERROR(Could not build against OpenSSL)])
LIBS="$oldLIBS"])
ssl_library=OpenSSL
PKG_CHECK_MODULES(P11KIT, p11-kit-1,
# libp11 0.4.7 fails to export ERR_LIB_PKCS11 so we don't know what it
# is and can't match its errors, which we need to for login checks.
[PKG_CHECK_MODULES(LIBP11, libp11 != 0.4.7,
[AC_DEFINE(HAVE_LIBP11, 1, [Have libp11 and p11-kit for OpenSSL])
AC_SUBST(P11KIT_PC, ["libp11 p11-kit-1"])
proxy_module="`$PKG_CONFIG --variable=proxy_module p11-kit-1`"
pkcs11_support="libp11"
AC_DEFINE_UNQUOTED([DEFAULT_PKCS11_MODULE], "${proxy_module}", [p11-kit proxy])],
[:])], [:])
else
OPENSSL_CFLAGS="-I${with_openssl}/include ${OPENSSL_CFLAGS}"
if test -r "${with_openssl}/libssl.a" -a -r "${with_openssl}/libcrypto.a"; then
OPENSSL_LIBS="${with_openssl}/libssl.a ${with_openssl}/libcrypto.a -ldl -lz -pthread"
elif test -r "${with_openssl}/crypto/.libs/libcrypto.a" -a \
-r "${with_openssl}/ssl/.libs/libssl.a"; then
OPENSSL_LIBS="${with_openssl}/ssl/.libs/libssl.a ${with_openssl}/crypto/.libs/libcrypto.a -ldl -lz -pthread"
else
AC_MSG_ERROR(Could not find OpenSSL libraries in ${with_openssl});
fi
AC_SUBST(OPENSSL_CFLAGS)
AC_SUBST(OPENSSL_LIBS)
enable_static=yes
enable_shared=no
ssl_library=OpenSSL
fi
fi
AC_ARG_WITH([openssl-version-check],
AS_HELP_STRING([--without-openssl-version-check], [Do not check for known-broken OpenSSL versions]))
AC_ARG_WITH([gnutls-version-check],
AS_HELP_STRING([--without-gnutls-version-check], [Do not check for known-broken GnuTLS versions]))
AC_ARG_WITH([default-gnutls-priority],
AS_HELP_STRING([--with-default-gnutls-priority=STRING],
[Provide a default string as GnuTLS priority string]),
default_gnutls_priority=$withval)
if test -n "$default_gnutls_priority"; then
AC_DEFINE_UNQUOTED([DEFAULT_PRIO], ["$default_gnutls_priority"], [The GnuTLS priority string])
fi
AC_ARG_WITH([gnutls-tss2],
AS_HELP_STRING([--with-gnutls-tss2], [Specify TSS2 library (tss2-esys, ibmtss)]))
tss2lib=none
case "$ssl_library" in
OpenSSL)
oldLIBS="${LIBS}"
oldCFLAGS="${CFLAGS}"
LIBS="${OPENSSL_LIBS} ${LIBS}"
CFLAGS="${CFLAGS} ${OPENSSL_CFLAGS}"
# Check for the various known-broken versions of OpenSSL, which includes LibreSSL.
if test "$with_openssl_version_check" != "no"; then
AC_MSG_CHECKING([for known-broken versions of OpenSSL])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <openssl/opensslv.h>],
[#if defined(LIBRESSL_VERSION_NUMBER)
#error Bad OpenSSL
#endif
])],
[],
[AC_MSG_RESULT(yes)
AC_MSG_ERROR([LibreSSL does not support Cisco DTLS.]
[Build with OpenSSL or GnuTLS instead.])])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <openssl/opensslv.h>],[#if \
(OPENSSL_VERSION_NUMBER == 0x10002000L || \
(OPENSSL_VERSION_NUMBER >= 0x100000b0L && OPENSSL_VERSION_NUMBER <= 0x100000c0L) || \
(OPENSSL_VERSION_NUMBER >= 0x10001040L && OPENSSL_VERSION_NUMBER <= 0x10001060L))
#error Bad OpenSSL
#endif
])],
[],
[AC_MSG_RESULT(yes)
AC_MSG_ERROR(This version of OpenSSL is known to be broken with Cisco DTLS.
See http://rt.openssl.org/Ticket/Display.html?id=2984&user=guest&pass=guest
Add --without-openssl-version-check to configure args to avoid this check, or
perhaps consider building with GnuTLS instead.)])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <openssl/opensslv.h>],[#if \
(OPENSSL_VERSION_NUMBER == 0x1000200fL)
#error Bad OpenSSL
#endif
])],
[],
[AC_MSG_RESULT(yes)
AC_MSG_ERROR(This version of OpenSSL is known to be broken with Cisco DTLS.
See http://rt.openssl.org/Ticket/Display.html?id=3703&user=guest&pass=guest
and http://rt.openssl.org/Ticket/Display.html?id=3711&user=guest&pass=guest
Add --without-openssl-version-check to configure args to avoid this check, or
perhaps consider building with GnuTLS instead.)])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <openssl/opensslv.h>],[#if \
((OPENSSL_VERSION_NUMBER >= 0x10001110L && OPENSSL_VERSION_NUMBER <= 0x10001150L) || \
(OPENSSL_VERSION_NUMBER >= 0x10002050L && OPENSSL_VERSION_NUMBER <= 0x10002090L))
#error Bad OpenSSL
#endif
])],
[],
[AC_MSG_RESULT(yes)
AC_MSG_ERROR(This version of OpenSSL is known to be broken with Cisco DTLS.
See http://rt.openssl.org/Ticket/Display.html?id=4631&user=guest&pass=guest
Add --without-openssl-version-check to configure args to avoid this check, or
perhaps consider building with GnuTLS instead.)])
AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING([for ENGINE_by_id() in OpenSSL])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <openssl/engine.h>],
[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])])
AC_MSG_CHECKING([for dtls1_stop_timer() in OpenSSL])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <openssl/ssl.h>
#include <stdlib.h>
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)])
# DTLS_client_method() and DTLSv1_2_client_method() were both added between
# OpenSSL v1.0.1 and v1.0.2. DTLSV1.2_client_method() was later deprecated
# in v1.1.0 so we use DTLS_client_method() as our check for DTLSv1.2 support
# and that's what we actually use in openssl-dtls.c too.
AC_MSG_CHECKING([for DTLS_client_method() in OpenSSL])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <openssl/ssl.h>],
[DTLS_client_method();])],
[AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_DTLS12, [1], [OpenSSL has DTLS_client_method() function])],
[AC_MSG_RESULT(no)])
AC_MSG_CHECKING([for SSL_CTX_set_min_proto_version() in OpenSSL])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <openssl/ssl.h>],
[SSL_CTX_set_min_proto_version((void *)0, 0);])],
[AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SSL_CTX_PROTOVER, [1], [OpenSSL has SSL_CTX_set_min_proto_version() function])],
[AC_MSG_RESULT(no)])
AC_MSG_CHECKING([for BIO_meth_free() in OpenSSL])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <openssl/bio.h>],
[BIO_meth_free((void *)0);])],
[AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BIO_METH_FREE, [1], [OpenSSL has BIO_meth_free() function])],
[AC_MSG_RESULT(no)])
AC_CHECK_FUNC(HMAC_CTX_copy,
[esp=yes],
[AC_MSG_WARN([ESP support will be disabled])])
AC_MSG_CHECKING([for SSL_CIPHER_find() in OpenSSL])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <openssl/ssl.h>],
[SSL_CIPHER_find((void *)0, "");])],
[AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SSL_CIPHER_FIND, [1], [OpenSSL has SSL_CIPHER_find() function])],
[AC_MSG_RESULT(no)])
AC_MSG_CHECKING([for HKDF support in OpenSSL])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <openssl/ssl.h>
#include <openssl/kdf.h>],
[EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, NULL);
EVP_PKEY_CTX_hkdf_mode(ctx, EVP_PKEY_HKDEF_MODE_EXTRACT_AND_EXPAND);])],
[AC_MSG_RESULT(yes)
hpke=yes],
[AC_MSG_RESULT(no)])
LIBS="${oldLIBS}"
CFLAGS="${oldCFLAGS}"
dtls=yes
AC_DEFINE(OPENCONNECT_OPENSSL, 1, [Using OpenSSL])
AC_DEFINE(OPENSSL_SUPPRESS_DEPRECATED, 1, [We need to update to OpenSSL 3.0.0 API])
AC_SUBST(SSL_LIBS, ['$(OPENSSL_LIBS)'])
AC_SUBST(SSL_CFLAGS, ['$(OPENSSL_CFLAGS)'])
;;
GnuTLS)
oldlibs="$LIBS"
oldcflags="$CFLAGS"
LIBS="$GNUTLS_LIBS $LIBS"
CFLAGS="$CFLAGS $GNUTLS_CFLAGS"
esp=yes
dtls=yes
# Check for the known-broken versions of GnuTLS,
if test "$with_gnutls_version_check" != "no"; then
AC_MSG_CHECKING([for known-broken versions of GnuTLS])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <gnutls/gnutls.h>],
[#if GNUTLS_VERSION_NUMBER >= 0x030603 && GNUTLS_VERSION_NUMBER <= 0x03060c
#error Bad GnuTLS
#endif
])],
[],
[AC_MSG_RESULT(yes)
AC_MSG_ERROR([DTLS is insecure in GnuTLS v3.6.3 through v3.6.12.]
[See https://gitlab.com/gnutls/gnutls/issues/960]
[Add --without-gnutls-version-check to configure args to avoid this check (DTLS]
[will still be disabled at runtime), or build with another version.])])
AC_MSG_RESULT(no)
fi
AC_CHECK_FUNC(gnutls_system_key_add_x509,
[AC_DEFINE(HAVE_GNUTLS_SYSTEM_KEYS, 1, [From GnuTLS 3.4.0])], [])
AC_CHECK_FUNC(gnutls_pkcs11_add_provider,
[PKG_CHECK_MODULES(P11KIT, p11-kit-1,
[AC_DEFINE(HAVE_P11KIT, 1, [Have. P11. Kit.])
pkcs11_support=GnuTLS
AC_SUBST(P11KIT_PC, p11-kit-1)],
[:])], [])
# From GnuTLS 3.6.13
AC_CHECK_FUNC(gnutls_hkdf_expand, [have_hkdf=yes], [have_hkdf=no])
LIBS="-ltspi $oldlibs"
AC_MSG_CHECKING([for Trousers tss library])
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <trousers/tss.h>
#include <trousers/trousers.h>],[
int err = Tspi_Context_Create((void *)0);
Trspi_Error_String(err);])],
[AC_MSG_RESULT(yes)
AC_SUBST([TSS_LIBS], [-ltspi])
AC_SUBST([TSS_CFLAGS], [])
AC_DEFINE(HAVE_TROUSERS, 1, [Have Trousers TSS library])],
[AC_MSG_RESULT(no)])
LIBS="$oldlibs"
CFLAGS="$oldcflags"
if test "$have_hkdf" = "yes"; then
PKG_CHECK_MODULES(HOGWEED, [hogweed],
[AC_MSG_CHECKING([For hogweed built-in mini-gmp])
LIBS="$oldlibs $HOGWEED_LIBS"
CFLAGS="$oldcflags $HOGWEED_CFLAGS"
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <nettle/ecc.h>],
[mpz_clear((void *)0);])],
[AC_MSG_RESULT(yes)
AC_SUBST(HPKE_CFLAGS, ['$(HOGWEED_FLAGS)'])
AC_SUBST(HPKE_LIBS, ['$(HOGWEED_LIBS)'])
hpke=yes],
[AC_MSG_RESULT(no)
PKG_CHECK_MODULES(GMP, [gmp],
[hpke=yes
AC_SUBST(HPKE_CFLAGS, ['$(HOGWEED_FLAGS) $(GMP_CFLAGS)'])
AC_SUBST(HPKE_LIBS, ['$(HOGWEED_LIBS) $(GMP_LIBS)'])],
[AC_MSG_CHECKING([for gmp without pkgconfig])
LIBS="$LIBS -lgmp"
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <gmp.h>],
[mpz_clear((void *)0);])],
[AC_MSG_RESULT(yes)
AC_SUBST(HPKE_CFLAGS, ['$(HOGWEED_FLAGS)'])
AC_SUBST(HPKE_LIBS, ['$(HOGWEED_LIBS) -lgmp'])
hpke=yes],
[AC_MSG_RESULT(no)])
])
])
LIBS="$oldlibs"
CFLAGS="$oldcflags"],
[:])
fi
PKG_CHECK_MODULES(TASN1, [libtasn1], [have_tasn1=yes], [have_tasn1=no])
if test "$have_tasn1" = "yes"; then
if test "$with_gnutls_tss2" = "yes" -o "$with_gnutls_tss2" = "tss2-esys" -o "$with_gnutls_tss2" = ""; then
PKG_CHECK_MODULES(TSS2_ESYS, [tss2-esys tss2-mu tss2-tctildr],
[AC_DEFINE(HAVE_TSS2, 1, [Have TSS2])
AC_SUBST(TPM2_CFLAGS, ['$(TASN1_CFLAGS) $(TSS2_ESYS_CFLAGS)'])
AC_SUBST(TPM2_LIBS, ['$(TASN1_LIBS) $(TSS2_ESYS_LIBS)'])
tss2lib=tss2-esys],
[:])
fi
if test "$tss2lib" = "none"; then
if test "$with_gnutls_tss2" = "yes" -o "$with_gnutls_tss2" = "ibmtss" -o "$with_gnutls_tss2" = ""; then
# The Fedora 'tss2-devel' package puts headers in /usr/include/ibmtss/
# and the library is named libibmtss.so. The Ubuntu libtss-dev package
# puts headers in /usr/include/${host}/tss2/ and the library is named
# libtss.so. Neither ships a pkg-config file at the time I write this.
AC_CHECK_LIB([tss], [TSS_Create], [tss2inc=tss2
tss2lib=tss],
AC_CHECK_LIB([ibmtss], [TSS_Create],
[tss2inc=ibmtss
tss2lib=ibmtss], []))
if test "$tss2lib" != "none"; then
AC_MSG_CHECKING([For <${tss2inc}/tss.h>])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#define TPM_POSIX
#include <${tss2inc}/tss.h>
],[])],
[AC_MSG_RESULT(yes)
AC_DEFINE_UNQUOTED(HAVE_TSS2, $tss2inc, [TSS2 library])
AC_SUBST(TSS2_LIBS, [-l$tss2lib])
AC_SUBST(TPM2_CFLAGS, ['$(TASN1_CFLAGS) -DTPM_POSIX'])
AC_SUBST(TPM2_LIBS, ['$(TASN1_LIBS) $(TSS2_LIBS)'])],
[AC_MSG_RESULT(no)
tss2lib=none])
fi
fi
fi
fi
AC_DEFINE(OPENCONNECT_GNUTLS, 1, [Using GnuTLS])
AC_SUBST(SSL_PC, [gnutls])
AC_SUBST(SSL_LIBS, ['$(GNUTLS_LIBS) $(TPM2_LIBS) $(HPKE_LIBS)'])
AC_SUBST(SSL_CFLAGS, ['$(GNUTLS_CFLAGS) $(TPM2_CFLAGS) $(HPKE_CFLAGS)'])
;;
*)
# This should never happen
AC_MSG_ERROR([No SSL library selected])
;;
esac
case x"$with_gnutls_tss2" in
xtss2-esys)
if test "$tss2lib" != "tss2-esys"; then
AC_MSG_ERROR([tss2-esys requested but not found])
fi
;;
xibmtss|xtss)
if test "$tss2lib" != "ibmtss" -a "$tss2lib" != "tss"; then
AC_MSG_ERROR([ibmtss requested but not found: $tss2lib])
fi
;;
x|xno)
;;
xyes)
if test "$tss2lib" = "none" -a "$with_gnutls_tss2" = "yes"; then
AC_MSG_ERROR([No TSS2 library found])
fi
;;
*)
AC_MSG_ERROR([Unknown value for gnutls-tss2])
;;
esac
AM_CONDITIONAL(OPENCONNECT_SYSTEM_KEYS, [ test "$ac_cv_func_gnutls_system_key_add_x509" = "yes" ])
AM_CONDITIONAL(OPENCONNECT_TSS2_ESYS, [ test "$tss2lib" = "tss2-esys" ])
AM_CONDITIONAL(OPENCONNECT_TSS2_IBM, [ test "$tss2lib" = "ibmtss" -o "$tss2lib" = "tss" ])
AC_PATH_PROG(SWTPM, swtpm)
SWTPM_IOCTL=""
TPM2_STARTUP=""
TSSTARTUP=""
if test "$SWTPM" != ""; then
AC_PATH_PROG(SWTPM_IOCTL, swtpm_ioctl)
AC_PATH_PROG(TPM2_STARTUP, tpm2_startup)
AC_PATH_PROG(TSSTARTUP, tsstartup)
fi
# The Intel/TCG TSS can only *create* keys
AC_PATH_PROG(TPM2TSS_GENKEY, tpm2tss-genkey)
# James's one can import them too.
AC_PATH_PROG(CREATE_TPM2_KEY, create_tpm2_key)
AC_ARG_ENABLE([hwtpm-test],
AS_HELP_STRING([--enable-hwtpm-test], [Test TPM support using real TPMv2 [default=no]]),
[test_hwtpm=$enableval], [test_hwtpm=no])
if test "$test_hwtpm" = "yes" -a "$TPM2TSS_GENKEY$CREATE_TPM2_KEY" = ""; then
AC_MSG_ERROR([Hardware TPM test requires tpm2tss-genkey and/or create_tpm2_key tools])
fi
AM_CONDITIONAL(TEST_HWTPM, [ test "$test_hwtpm" = "yes" ])
AM_CONDITIONAL(TEST_SWTPM, [ test "$SWTPM_IOCTL" != "" -a \( "$TPM2_STARTUP" != "" -o "$TSSTARTUP" != "" \) ])
AM_CONDITIONAL(TEST_TPM2_CREATE, [ test "$TPM2TSS_GENKEY" != "" ])
AM_CONDITIONAL(TEST_TPM2_IMPORT, [ test "$CREATE_TPM2_KEY" != "" ])
test_pkcs11=
if test "$pkcs11_support" != ""; then
AC_CHECK_PROG(test_pkcs11, softhsm2-util, yes)
fi
AM_CONDITIONAL(TEST_PKCS11, [ test "$test_pkcs11" = "yes" ])
# The test is OpenSSL-only for now.
AM_CONDITIONAL(CHECK_DTLS, [ test "$ssl_library" = "OpenSSL" ])
AC_ARG_ENABLE([dtls-xfail],
AS_HELP_STRING([--enable-dtls-xfail], [Only for gitlab CI. Do not use]))
AM_CONDITIONAL(DTLS_XFAIL, [test "$enable_dtls_xfail" = "yes" ])
AC_ARG_ENABLE([dsa-tests],
AS_HELP_STRING([--disable-dsa-tests], [Disable DSA keys in self-test]),
[], [enable_dsa_tests=yes])
AM_CONDITIONAL(TEST_DSA, [test "$enable_dsa_tests" = "yes"])
AC_ARG_ENABLE([ppp-tests],
AS_HELP_STRING([--enable-ppp-tests], [Enable PPP tests (which require socat and pppd, and must run as root)]),
[enable_ppp_tests=yes])
AC_ARG_ENABLE([flask-tests],
AS_HELP_STRING([--disable-flask-tests], [Disable Flask-based tests (which require Python 3.6+ and the Flask module)]),
[], [enable_flask_tests=yes])
AM_CONDITIONAL(OPENCONNECT_GNUTLS, [ test "$ssl_library" = "GnuTLS" ])
AM_CONDITIONAL(OPENCONNECT_OPENSSL, [ test "$ssl_library" = "OpenSSL" ])
AM_CONDITIONAL(OPENCONNECT_ESP, [ test "$esp" != "" ])
AM_CONDITIONAL(OPENCONNECT_DTLS, [ test "$dtls" != "" ])
if test "$esp" != ""; then
AC_DEFINE(HAVE_ESP, 1, [Build with ESP support])
fi
if test "$dtls" != ""; then
AC_DEFINE(HAVE_DTLS, 1, [Build with DTLS support])
fi
if test "$hpke" != ""; then
AC_DEFINE(HAVE_HPKE_SUPPORT, 1, [Support Cisco external browser HPKE (ECDH+HKDF+AES-256-GCM)])
fi
AC_ARG_WITH(lz4,
AS_HELP_STRING([--without-lz4], [disable support for LZ4 compression]),
test_for_lz4=$withval,
test_for_lz4=yes)
lz4_pkg=no
if test "$test_for_lz4" = yes; then
PKG_CHECK_MODULES([LIBLZ4], [liblz4], [
AC_SUBST(LIBLZ4_PC, liblz4)
AC_DEFINE([HAVE_LZ4], [], [LZ4 was found])
lz4_pkg=yes
oldLIBS="$LIBS"
LIBS="$LIBLZ4_LIBS $LIBS"
oldCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $LIBLZ4_CFLAGS"
AC_MSG_CHECKING([for LZ4_compress_default()])
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <lz4.h>],[
LZ4_compress_default("", (char *)0, 0, 0);])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_LZ4_COMPRESS_DEFAULT], [], [From LZ4 r129])
],
[AC_MSG_RESULT(no)])
LIBS="$oldLIBS"
CFLAGS="$oldCFLAGS"
],
[
AC_MSG_WARN([[
***
*** lz4 not found.
*** ]])
])
fi
if test "$build_nsis" = "yes"; then
case $host_os in
*mingw32*)
if test "$host_cpu" = "x86_64"; then
winsys=MinGW64
else
winsys=MinGW32
fi
;;
*mingw64*)
winsys=MinGW64
;;
*msys*)
winsys=MSYS
;;
*)
winsys=Unknown
;;
esac
AC_SUBST(INSTALLER_SUFFIX, [${winsys}-${ssl_library}])
fi
# For some bizarre reason now that we use AM_ICONV, the mingw32 build doesn't
# manage to set EGREP properly in the created ./libtool script. Make sure it's
# found.
AC_PROG_EGREP
# Needs to happen after we default to static/shared libraries based on OpenSSL
LT_INIT
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" ])
AX_CHECK_VSCRIPT
PKG_CHECK_MODULES(LIBXML2, libxml-2.0)
AC_ARG_WITH([builtin-json],
AS_HELP_STRING([--with-builtin-json],
[Build with builtin json-parser library [default=auto]]))
json=
AS_IF([test "$with_builtin_json" != "yes"],
[PKG_CHECK_MODULES(JSON, json-parser,
[AC_SUBST(JSON_PC, [json-parser])
json=system], [:])
AC_DEFINE(HAVE_JSON, 1, [Have system json-parser package])
])
AS_IF([test "$with_builtin_json" != "no" && test "$json" = "" ],
[json=builtin
oldLIBS="$LIBS"
AC_SEARCH_LIBS(pow, [m])
LIBS="$oldLIBS"
AC_SUBST([JSON_LIBS], [$ac_cv_search_pow])
AC_SUBST([JSON_CFLAGS], ['-I$(srcdir)/json'])
AC_DEFINE(HAVE_JSON, 1, [Have builtin json-parser package])
])
AS_IF([test "$json" = ""],
AC_MSG_ERROR(No json-parser package found and --without-builtin-json specified)
)
AM_CONDITIONAL(BUILTIN_JSON, [test "$json" = "builtin"])
PKG_CHECK_MODULES(ZLIB, zlib, [AC_SUBST(ZLIB_PC, [zlib])],
[oldLIBS="$LIBS"