wolfssh/configure.ac

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# wolfssh
# Copyright (C) 2014-2026 wolfSSL Inc.
# All right reserved.
AC_COPYRIGHT([Copyright (C) 2014-2026 wolfSSL Inc.])
AC_INIT([wolfssh],[1.5.0],[support@wolfssl.com],[wolfssh],[https://www.wolfssl.com])
AC_PREREQ([2.69])
AC_CONFIG_AUX_DIR([build-aux])
: ${CFLAGS=""}
AC_CANONICAL_HOST
AC_CANONICAL_TARGET
AM_INIT_AUTOMAKE([1.14.1 -Wall -Werror -Wno-portability foreign tar-ustar subdir-objects no-define color-tests])
AC_ARG_PROGRAM
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADERS([config.h])
WOLFSSH_LIBRARY_VERSION=20:0:2
# | | |
# +-----+ | +----+
# | | |
# current:revision:age
# | | |
# | | +- increment if interfaces have been added
# | | +- set to zero if interfaces have been
# | | removed or changed
# | +- increment if source code has changed
# | +- set to zero if current is incremented
# +- increment if interfaces have been added, removed
# or changed
AC_SUBST([WOLFSSH_LIBRARY_VERSION])
LT_PREREQ([2.4.3])
LT_INIT([disable-static win32-dll])
gl_VISIBILITY
AS_IF([test -n "$CFLAG_VISIBILITY"],[AM_CFLAGS="$AM_CFLAGS $CFLAG_VISIBILITY"])
# silent
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
# Checks for programs.
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_INSTALL
# Checks for type sizes.
AC_CHECK_SIZEOF([long long])
AC_CHECK_SIZEOF([long])
AC_CHECK_SIZEOF([off_t])
AC_TYPE_SIZE_T
AC_TYPE_UINT8_T
AC_TYPE_UINTPTR_T
# Check headers/libs
AC_CHECK_HEADERS([limits.h sys/select.h sys/time.h sys/ioctl.h pty.h util.h termios.h])
AC_CHECK_LIB([network],[socket])
AC_CHECK_LIB([util],[forkpty])
#wolfssl
AC_MSG_CHECKING([for wolfSSL])
if test "x$prefix" = "xNONE"
then
wcpath=$ac_default_prefix
else
wcpath=$prefix
fi
AC_MSG_NOTICE([prefix ${prefix}])
WOLFSSL_URL="http://www.wolfssl.com/download.html"
AC_ARG_WITH(wolfssl,
[AS_HELP_STRING([--with-wolfssl=PATH], [PATH to wolfssl install (default /usr/local)])],
[
if test "x$withval" != "xno" ; then
if test -d "${withval}/lib" && test -d "${withval}/include"; then
wcpath=${withval}
LDFLAGS="-L${wcpath}/lib $LDFLAGS"
CPPFLAGS="-I${wcpath}/include $CPPFLAGS"
else
AC_MSG_ERROR([wolfSSL path error (${withval}): missing lib and include])
fi
fi
]
)
AC_CHECK_LIB([wolfssl],[wolfCrypt_Init],,[AC_MSG_ERROR([libwolfssl is required for ${PACKAGE}. It can be obtained from https://www.wolfssl.com/download.html/ .])])
AC_CHECK_FUNCS([gethostbyname getaddrinfo gettimeofday inet_ntoa memset socket wc_ecc_set_rng])
# futimens()/utimensat() declarations are feature-test-macro gated, so a plain
# AC_CHECK_FUNCS link test can pass while the prototype stays hidden at compile
# time. Probe through the real header so a positive result is build-safe.
AC_MSG_CHECKING([for futimens])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[#include <sys/stat.h>
#include <time.h>]],
[[struct timespec ts[2]; (void)futimens(0, ts);]])],
[AC_DEFINE([HAVE_FUTIMENS], [1], [futimens() available and declared])
AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])
AC_MSG_CHECKING([for utimensat])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[#include <fcntl.h>
#include <sys/stat.h>
#include <time.h>]],
[[struct timespec ts[2];
(void)utimensat(AT_FDCWD, "x", ts, AT_SYMLINK_NOFOLLOW);]])],
[AC_DEFINE([HAVE_UTIMENSAT], [1], [utimensat() available and declared])
AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])
AC_CHECK_DECLS([[pread],[pwrite]],,[unistd.h])
# DEBUG
DEBUG_CFLAGS="-g -O0"
DEBUG_CPPFLAGS="-DDEBUG -DDEBUG_WOLFSSH"
AX_DEBUG
AS_IF([test "x$ax_enable_debug" = "xyes"],
[AM_CFLAGS="$DEBUG_CFLAGS $AM_CFLAGS"
AM_CPPFLAGS="$DEBUG_CPPFLAGS $AM_CPPFLAGS"],
[AM_CFLAGS="$AM_CFLAGS -O2"
AM_CPPFLAGS="-DNDEBUG $AM_CPPFLAGS"])
AX_PTHREAD([
AC_DEFINE([HAVE_PTHREAD], [1], [Define if you have POSIX threads libraries and header files.])
# If AX_PTHREAD is adding -Qunused-arguments, need to prepend with
# -Xcompiler libtool will use it. Newer versions of clang don't need
# the -Q flag when using pthreads.
AS_CASE([$PTHREAD_CFLAGS],[-Qunused-arguments*],[PTHREAD_CFLAGS="-Xcompiler $PTHREAD_CFLAGS"])
AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"])
AX_AM_JOBSERVER([yes])
# Inline Build
AC_ARG_ENABLE([inline],
[AS_HELP_STRING([--disable-inline],[Disable inline functions (default: enabled)])],
[ENABLED_INLINE=$enableval],[ENABLED_INLINE=yes])
# Examples Build
AC_ARG_ENABLE([examples],
[AS_HELP_STRING([--disable-examples],[Disable examples (default: enabled)])],
[ENABLED_EXAMPLES=$enableval],[ENABLED_EXAMPLES=yes])
# Remove server code
AC_ARG_ENABLE([server],
[AS_HELP_STRING([--disable-server],[Disable server code (default: enabled)])],
[ENABLED_SERVER=$enableval],[ENABLED_SERVER=yes])
# Remove client code
AC_ARG_ENABLE([client],
[AS_HELP_STRING([--disable-client],[Disable client code (default: enabled)])],
[ENABLED_CLIENT=$enableval],[ENABLED_CLIENT=yes])
# Key Generation
AC_ARG_ENABLE([keygen],
[AS_HELP_STRING([--enable-keygen],[Enable key generation (default: disabled)])],
[ENABLED_KEYGEN=$enableval],[ENABLED_KEYGEN=no])
# Keyboard Interactive
AC_ARG_ENABLE([keyboard-interactive],
[AS_HELP_STRING([--enable-keyboard-interactive],[Enable keyboard interactive authentication (default: disabled)])],
[ENABLED_KEYBOARD_INTERACTIVE=$enableval],[ENABLED_KEYBOARD_INTERACTIVE=no])
# SCP
AC_ARG_ENABLE([scp],
[AS_HELP_STRING([--enable-scp],[Enable scp support (default: disabled)])],
[ENABLED_SCP=$enableval],[ENABLED_SCP=no])
# SFTP
AC_ARG_ENABLE([sftp],
[AS_HELP_STRING([--enable-sftp],[Enable SFTP support (default: disabled)])],
[ENABLED_SFTP=$enableval],[ENABLED_SFTP=no])
# SFTP buffer zeroization
AC_ARG_ENABLE([sftp-zeroize],
[AS_HELP_STRING([--disable-sftp-zeroize],[Disable zeroization of SFTP file payload buffers before free (default: enabled)])],
[ENABLED_SFTP_ZEROIZE=$enableval],[ENABLED_SFTP_ZEROIZE=yes])
# SSHD
AC_ARG_ENABLE([sshd],
[AS_HELP_STRING([--enable-sshd],[Enable SSHD support (default: disabled)])],
[ENABLED_SSHD=$enableval],[ENABLED_SSHD=no])
# SSH Client
AC_ARG_ENABLE([sshclient],
[AS_HELP_STRING([--enable-sshclient],[Enable SSH client app (default: disabled)])],
[ENABLED_SSHCLIENT=$enableval],[ENABLED_SSHCLIENT=no])
# TCP/IP Forwarding
AC_ARG_ENABLE([fwd],
[AS_HELP_STRING([--enable-fwd],[Enable TCP/IP Forwarding support (default: disabled)])],
[ENABLED_FWD=$enableval],[ENABLED_FWD=no])
# pseudo-terminal
AC_ARG_ENABLE([term],
[AS_HELP_STRING([--disable-term],[Disable pseudo-terminal support (default: enabled)])],
[ENABLED_TERM=$enableval],[ENABLED_TERM=yes])
# shell support
AC_ARG_ENABLE([shell],
[AS_HELP_STRING([--enable-shell],[Enable echoserver shell support (default: disabled)])],
[ENABLED_SHELL=$enableval],[ENABLED_SHELL=no])
# ssh-agent
AC_ARG_ENABLE([agent],
[AS_HELP_STRING([--enable-agent],[Enable ssh-agent support (default: disabled)])],
[ENABLED_AGENT=$enableval],[ENABLED_AGENT=no])
# X.509 certs
AC_ARG_ENABLE([certs],
[AS_HELP_STRING([--enable-certs],[Enable X.509 cert support (default: disabled)])],
[ENABLED_CERTS=$enableval],[ENABLED_CERTS=no])
# OpenSSH certs
AC_ARG_ENABLE([ossh-certs],
[AS_HELP_STRING([--enable-ossh-certs],[Enable OpenSSH certificate user auth (default: disabled)])],
[ENABLED_OSSH_CERTS=$enableval],[ENABLED_OSSH_CERTS=no])
# TPM 2.0 Support
AC_ARG_ENABLE([tpm],
[AS_HELP_STRING([--enable-tpm],[Enable TPM 2.0 support (default: disabled)])],
[ENABLED_TPM=$enableval],[ENABLED_TPM=no])
# smallstack
AC_ARG_ENABLE([smallstack],
[AS_HELP_STRING([--enable-smallstack],[Enable small stack (default: disabled)])],
[ENABLED_SMALLSTACK=$enableval],[ENABLED_SMALLSTACK=no])
# Allow "none" cipher/MAC
AC_ARG_ENABLE([none-cipher],
[AS_HELP_STRING([--enable-none-cipher],[Allow negotiating the insecure "none" cipher/MAC, disabling encryption/integrity (default: disabled)])],
[ENABLED_NONE_CIPHER=$enableval],[ENABLED_NONE_CIPHER=no])
# use PAM lib
AC_ARG_WITH([pam],
[AS_HELP_STRING([--with-pam=PATH],[PATH to directory with the PAM library])],
[PAM_LIB=$withval],
[PAM_LIB=""])
# Enable All
AC_ARG_ENABLE([all],
[AS_HELP_STRING([--enable-all],[Enable all wolfSSH features (default: disabled)])],
[ENABLED_ALL=$enableval],[ENABLED_ALL=no])
# Distro build
AC_ARG_ENABLE([distro],
[AS_HELP_STRING([--enable-distro],[Enable wolfSSH distro build (default: disabled)])],
[ENABLED_DISTRO=$enableval],[ENABLED_DISTRO=no])
# Update the ENABLED flags for options that affect other options.
AS_IF([test "x$ENABLED_DISTRO" = "xyes"],
[ENABLED_ALL=yes; enable_shared=yes; enable_static=yes])
AS_IF([test "x$ENABLED_ALL" = "xyes"],
[ENABLED_KEYGEN=yes; ENABLED_SCP=yes; ENABLED_SFTP=yes; ENABLED_FWD=yes; ENABLED_SHELL=yes; ENABLED_AGENT=yes; ENABLED_SSHD=yes; ENABLED_SSHCLIENT=yes; ENABLED_CERTS=yes; ENABLED_KEYBOARD_INTERACTIVE=yes])
AS_IF([test "x$ENABLED_SSHD" = "xyes"],
[ENABLED_SHELL=yes])
# The client app runs every session's I/O on threads, so it needs a threaded
# wolfSSL. Probe for the macro rather than trust the flags, it arrives through
# wolfSSL's options.h. Asking for the client outright is an error; getting it
# from --enable-all only drops it, so --enable-all still works here.
AS_IF([test "x$ENABLED_SSHCLIENT" = "xyes"],[
AC_MSG_CHECKING([whether wolfSSL is single threaded])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#ifdef WOLFSSL_USER_SETTINGS
#include <wolfssl/wolfcrypt/settings.h>
#else
#include <wolfssl/options.h>
#endif]],
[[#ifndef SINGLE_THREADED
#error "threaded"
#endif]])],
[AC_MSG_RESULT([yes])
AS_IF([test "x$enable_sshclient" = "xyes"],
[AC_MSG_ERROR([--enable-sshclient requires a threaded wolfSSL.])],
[AC_MSG_NOTICE([single threaded wolfSSL, not building the ssh client app])
ENABLED_SSHCLIENT=no])],
[AC_MSG_RESULT([no])])])
# Set the defined flags for the code.
AS_IF([test "x$ENABLED_INLINE" = "xno"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DNO_INLINE"])
AS_IF([test "x$ENABLED_SERVER" = "xno"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DNO_WOLFSSH_SERVER"])
AS_IF([test "x$ENABLED_CLIENT" = "xno"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DNO_WOLFSSH_CLIENT"])
AS_IF([test "x$ENABLED_KEYGEN" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_KEYGEN"])
AS_IF([test "x$ENABLED_KEYBOARD_INTERACTIVE" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_KEYBOARD_INTERACTIVE"])
AS_IF([test "x$ENABLED_SCP" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_SCP"])
AS_IF([test "x$ENABLED_SFTP" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_SFTP"])
AS_IF([test "x$ENABLED_SFTP_ZEROIZE" = "xno"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_NO_SFTP_BUFFER_ZERO"])
AS_IF([test "x$ENABLED_FWD" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_FWD"])
AS_IF([test "x$ENABLED_TERM" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_TERM"])
AS_IF([test "x$ENABLED_SHELL" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_SHELL"])
AS_IF([test "x$ENABLED_AGENT" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_AGENT"])
AS_IF([test "x$ENABLED_CERTS" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_CERTS"])
AS_IF([test "x$ENABLED_OSSH_CERTS" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_OSSH_CERTS"])
AS_IF([test "x$ENABLED_SMALLSTACK" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_SMALL_STACK"])
AS_IF([test "x$ENABLED_NONE_CIPHER" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_ALLOW_NONE_CIPHER"])
dnl The client app shows host key fingerprints and writes known_hosts
dnl entries, both base64. wolfSSL only enables its encoder by default on
dnl x86_64, so check for it rather than fail later on a hidden prototype.
AS_IF([test "x$ENABLED_SSHCLIENT" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_SSHCLIENT"
AC_MSG_CHECKING([for Base64_Encode_NoNl])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/coding.h>]],
[[byte out[8];
word32 outSz = sizeof(out);
(void)Base64_Encode_NoNl((const byte*)"x", 1,
out, &outSz);]])],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
AC_MSG_ERROR([the SSH client app needs base64 encoding for host key fingerprints and known_hosts entries. Rebuild wolfSSL with --enable-base64encode, or leave out --enable-sshclient.])])])
AS_IF([test "x$ENABLED_TPM" = "xyes"],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_TPM"
AC_CHECK_LIB([wolftpm],[wolfTPM2_Init],,[AC_MSG_ERROR([libwolftpm is required for ${PACKAGE}. It can be obtained from https://www.wolfssl.com/download.html/ .])])])
AS_IF([test "x$ENABLED_SSHD" = "xyes"],[
AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_SSHD"
AS_IF([test -n "$PAM_LIB"],[
AC_MSG_CHECKING([for directory $PAM_LIB])
AS_IF([! test -d "$PAM_LIB"],[AC_MSG_ERROR([PAM lib dir $PAM_LIB not found.])])
AC_MSG_RESULT([yes])
AM_LDFLAGS="-L$PAM_LIB $AM_LDFLAGS"
LIBS="$LIBS -lpam"
AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_USE_PAM"
#TODO check on link to lib
#AC_CHECK_LIB([pam], [pam],
# [AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_USE_PAM"; LIBS="$LIBS -lpam"],
# [AC_MSG_ERROR(libpam not found)])
],[
AS_CASE([$host],
[*qnx*],[
# QNX uses liblogin for crypt operation
AC_CHECK_LIB([login],[login],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_HAVE_LIBLOGIN"; LIBS="$LIBS -llogin"],
[AC_MSG_ERROR(liblogin not found)])],
[*darwin*],[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_HAVE_LIBCRYPT"],
[AC_CHECK_LIB([crypt],[crypt],
[AM_CPPFLAGS="$AM_CPPFLAGS -DWOLFSSH_HAVE_LIBCRYPT"; LIBS="$LIBS -lcrypt"],
[AC_MSG_ERROR(libcrypt not found)])])
])
])
AC_CONFIG_LINKS([keys/gretel-key-rsa.pub:keys/gretel-key-rsa.pub
keys/gretel-key-rsa.pem:keys/gretel-key-rsa.pem
keys/gretel-key-ecc.pub:keys/gretel-key-ecc.pub
keys/gretel-key-ecc.pem:keys/gretel-key-ecc.pem
keys/server-key-rsa.der:keys/server-key-rsa.der
keys/server-key-ecc.der:keys/server-key-ecc.der
keys/server-key-ecc-521.der:keys/server-key-ecc-521.der
keys/server-key-ed25519.der:keys/server-key-ed25519.der])
# Set the automake conditionals.
AM_CONDITIONAL([BUILD_EXAMPLE_SERVERS],[test "x$ENABLED_EXAMPLES" = "xyes"])
AM_CONDITIONAL([BUILD_EXAMPLE_CLIENTS],[test "x$ENABLED_EXAMPLES" = "xyes"])
AM_CONDITIONAL([BUILD_INLINE],[test "x$ENABLED_INLINE" = "xyes"])
AM_CONDITIONAL([BUILD_KEYGEN],[test "x$ENABLED_KEYGEN" = "xyes"])
AM_CONDITIONAL([BUILD_SCP],[test "x$ENABLED_SCP" = "xyes"])
AM_CONDITIONAL([BUILD_SFTP],[test "x$ENABLED_SFTP" = "xyes"])
AM_CONDITIONAL([BUILD_FWD],[test "x$ENABLED_FWD" = "xyes"])
AM_CONDITIONAL([BUILD_TERM],[test "x$ENABLED_TERM" = "xyes"])
AM_CONDITIONAL([BUILD_SHELL],[test "x$ENABLED_SHELL" = "xyes"])
AM_CONDITIONAL([BUILD_AGENT],[test "x$ENABLED_AGENT" = "xyes"])
AM_CONDITIONAL([BUILD_SSHD],[test "x$ENABLED_SSHD" = "xyes"])
AM_CONDITIONAL([BUILD_SSHCLIENT],[test "x$ENABLED_SSHCLIENT" = "xyes"])
AM_CONDITIONAL([BUILD_CERTS],[test "x$ENABLED_CERTS" = "xyes"])
AM_CONDITIONAL([BUILD_TPM],[test "x$ENABLED_TPM" = "xyes"])
AM_CONDITIONAL([BUILD_KEYBOARD_INTERACTIVE],[test "x$ENABLED_KEYBOARD_INTERACTIVE" = "xyes"])
AX_HARDEN_CC_COMPILER_FLAGS
CREATE_HEX_VERSION
AC_SUBST([AM_CPPFLAGS])
AC_SUBST([AM_CFLAGS])
AC_SUBST([AM_LDFLAGS])
# Tools used by the SBOM targets (see Makefile.am `make sbom`). GIT is used
# only to derive SOURCE_DATE_EPOCH for reproducible SBOM output; all three are
# optional and the target reports a clear error when a required one is missing.
AC_PATH_PROG([PYTHON3], [python3])
AC_PATH_PROG([PYSPDXTOOLS], [pyspdxtools])
AC_PATH_PROG([GIT], [git])
# FINAL
AC_CONFIG_FILES([Makefile wolfssh/version.h])
AX_CREATE_GENERIC_CONFIG
AC_OUTPUT
# force make clean
AS_ECHO(["---"])
AS_ECHO(["Running make clean..."])
make clean >/dev/null 2>&1
# output config summary
AS_ECHO(["---"])
AS_ECHO(["Configuration summary for $PACKAGE_NAME version $VERSION"])
AS_ECHO
AS_ECHO([" * Installation prefix: $prefix"])
AS_ECHO([" * System type: $host_vendor-$host_os"])
AS_ECHO([" * Host CPU: $host_cpu"])
AS_ECHO([" * C Compiler: $CC"])
AS_ECHO([" * C Flags: $CFLAGS"])
AS_ECHO([" * CPP Flags: $CPPFLAGS"])
AS_ECHO([" * Linker Flags: $LDFLAGS"])
AS_ECHO
AS_ECHO([" Features"])
AS_ECHO([" * Inline Code: $ENABLED_INLINE"])
AS_ECHO([" * Small stack: $ENABLED_SMALLSTACK"])
AS_ECHO([" * keygen: $ENABLED_KEYGEN"])
AS_ECHO([" * keyboard interactive: $ENABLED_KEYBOARD_INTERACTIVE"])
AS_ECHO([" * psuedo-terminal: $ENABLED_TERM"])
AS_ECHO([" * echoserver shell support: $ENABLED_SHELL"])
AS_ECHO([" * scp: $ENABLED_SCP"])
AS_ECHO([" * sftp: $ENABLED_SFTP"])
AS_ECHO([" * sftp buffer zeroize: $ENABLED_SFTP_ZEROIZE"])
AS_ECHO([" * allow none cipher/MAC: $ENABLED_NONE_CIPHER"])
AS_ECHO([" * sshd: $ENABLED_SSHD"])
AS_ECHO([" * ssh client: $ENABLED_SSHCLIENT"])
AS_ECHO([" * agent: $ENABLED_AGENT"])
AS_ECHO([" * TPM 2.0 support: $ENABLED_TPM"])
AS_ECHO([" * TCP/IP Forwarding: $ENABLED_FWD"])
AS_ECHO([" * X.509 Certs: $ENABLED_CERTS"])
AS_ECHO([" * OpenSSH Certs: $ENABLED_OSSH_CERTS"])
AS_ECHO([" * Examples: $ENABLED_EXAMPLES"])