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libssh2/configure.ac

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# AC_PREREQ(2.57)
AC_INIT(libssh2, [-], libssh2-devel@cool.haxx.se)
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_SRCDIR([src])
AC_CONFIG_HEADERS([src/libssh2_config.h])
AM_MAINTAINER_MODE
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
dnl SED is needed by some of the tools
AC_PATH_PROG( SED, sed, sed-was-not-found-by-configure,
$PATH:/usr/bin:/usr/local/bin)
AC_SUBST(SED)
if test "x$SED" = "xsed-was-not-found-by-configure"; then
AC_MSG_WARN([sed was not found, this may ruin your chances to build fine])
fi
dnl figure out the libssh2 version
LIBSSH2VER=`$SED -ne 's/^#define LIBSSH2_VERSION *"\(.*\)"/\1/p' ${srcdir}/include/libssh2.h`
AM_INIT_AUTOMAKE
AC_MSG_CHECKING([libssh2 version])
AC_MSG_RESULT($LIBSSH2VER)
AC_SUBST(LIBSSH2VER)
AB_VERSION=$LIBSSH2VER
AB_INIT
# Check for the OS.
# Daniel's note: this should not be necessary and we need to work to
# get this removed.
AC_CANONICAL_HOST
case "$host" in
*-mingw*)
CFLAGS="$CFLAGS -DLIBSSH2_WIN32"
LIBS="$LIBS -lws2_32"
;;
*darwin*)
CFLAGS="$CFLAGS -DLIBSSH2_DARWIN"
;;
*hpux*)
;;
*osf*)
CFLAGS="$CFLAGS -D_POSIX_PII_SOCKET"
;;
*)
;;
esac
AC_CHECK_TYPE(long long,
[AC_DEFINE(HAVE_LONGLONG, 1,
[Define to 1 if the compiler supports the 'long long' data type.])]
longlong="yes"
)
dnl Our configure and build reentrant settings
CURL_CONFIGURE_REENTRANT
# Some systems (Solaris?) have socket() in -lsocket.
AC_SEARCH_LIBS(socket, socket)
# Solaris has inet_addr() in -lnsl.
AC_SEARCH_LIBS(inet_addr, nsl)
AC_SUBST(LIBS)
AC_PROG_CC
AC_PROG_CXX
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PATH_PROGS(SSHD, [sshd], [],
[$PATH$PATH_SEPARATOR/usr/libexec$PATH_SEPARATOR]dnl
[/usr/sbin$PATH_SEPARATOR/usr/etc$PATH_SEPARATOR/etc])
AM_CONDITIONAL(SSHD, test -n "$SSHD")
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
AC_C_BIGENDIAN
dnl check for how to do large files
AC_SYS_LARGEFILE
# Crypto backends
found_crypto=none
found_crypto_str=""
support_clear_memory=no
crypto_errors=""
m4_set_add([crypto_backends], [openssl])
m4_set_add([crypto_backends], [libgcrypt])
m4_set_add([crypto_backends], [mbedtls])
m4_set_add([crypto_backends], [wincng])
AC_ARG_WITH([crypto],
AC_HELP_STRING([--with-crypto=auto|]m4_set_contents([crypto_backends], [|]),
[Select crypto backend (default: auto)]),
use_crypto=$withval,
use_crypto=auto
)
case "${use_crypto}" in
auto|m4_set_contents([crypto_backends], [|]))
m4_set_map([crypto_backends], [LIBSSH2_CHECK_CRYPTO])
;;
yes|"")
crypto_errors="No crypto backend specified!"
;;
*)
crypto_errors="Unknown crypto backend '${use_crypto}' specified!"
;;
esac
if test "$found_crypto" = "none"; then
crypto_errors="${crypto_errors}
Specify --with-crypto=\$backend and/or the neccessary library search prefix.
Known crypto backends: auto, m4_set_contents([crypto_backends], [, ])"
AS_MESSAGE([ERROR: ${crypto_errors}])
else
test "$found_crypto_str" = "" && found_crypto_str="$found_crypto"
fi
m4_set_foreach([crypto_backends], [backend],
[AM_CONDITIONAL(m4_toupper(backend), test "$found_crypto" = "backend")]
)
# libz
AC_ARG_WITH([libz],
AC_HELP_STRING([--with-libz],[Use libz for compression]),
use_libz=$withval,
use_libz=auto)
found_libz=no
libz_errors=""
if test "$use_libz" != no; then
AC_LIB_HAVE_LINKFLAGS([z], [], [#include <zlib.h>])
if test "$ac_cv_libz" != yes; then
if test "$use_libz" = auto; then
AC_MSG_NOTICE([Cannot find libz, disabling compression])
found_libz="disabled; no libz found"
else
libz_errors="No libz found!
Try --with-libz-prefix=PATH if you know that you have it."
AS_MESSAGE([ERROR: $libz_errors])
fi
else
AC_DEFINE(LIBSSH2_HAVE_ZLIB, 1, [Compile in zlib support])
LIBSREQUIRED="$LIBSREQUIRED${LIBSREQUIRED:+ }zlib"
found_libz="yes"
fi
fi
AC_SUBST(LIBSREQUIRED)
#
# Optional Settings
#
AC_ARG_ENABLE(crypt-none,
AC_HELP_STRING([--enable-crypt-none],[Permit "none" cipher -- NOT RECOMMENDED]),
[AC_DEFINE(LIBSSH2_CRYPT_NONE, 1, [Enable "none" cipher -- NOT RECOMMENDED])])
AC_ARG_ENABLE(mac-none,
AC_HELP_STRING([--enable-mac-none],[Permit "none" MAC -- NOT RECOMMENDED]),
[AC_DEFINE(LIBSSH2_MAC_NONE, 1, [Enable "none" MAC -- NOT RECOMMENDED])])
AC_ARG_ENABLE(gex-new,
AC_HELP_STRING([--disable-gex-new],[Disable "new" diffie-hellman-group-exchange-sha1 method]),
[GEX_NEW=$enableval])
if test "$GEX_NEW" != "no"; then
AC_DEFINE(LIBSSH2_DH_GEX_NEW, 1, [Enable newer diffie-hellman-group-exchange-sha1 syntax])
fi
AC_ARG_ENABLE(clear-memory,
AC_HELP_STRING([--disable-clear-memory],[Disable clearing of memory before being freed]),
[CLEAR_MEMORY=$enableval])
if test "$CLEAR_MEMORY" != "no"; then
if test "$support_clear_memory" = "yes"; then
AC_DEFINE(LIBSSH2_CLEAR_MEMORY, 1, [Enable clearing of memory before being freed])
enable_clear_memory=yes
else
if test "$CLEAR_MEMORY" = "yes"; then
AC_MSG_ERROR([secure clearing/zeroing of memory is not supported by the selected crypto backend])
else
AC_MSG_WARN([secure clearing/zeroing of memory is not supported by the selected crypto backend])
fi
enable_clear_memory=unsupported
fi
else
if test "$support_clear_memory" = "yes"; then
enable_clear_memory=no
else
AC_MSG_WARN([secure clearing/zeroing of memory is not supported by the selected crypto backend])
enable_clear_memory=unsupported
fi
fi
dnl ************************************************************
dnl option to switch on compiler debug options
dnl
AC_MSG_CHECKING([whether to enable pedantic and debug compiler options])
AC_ARG_ENABLE(debug,
AC_HELP_STRING([--enable-debug],[Enable pedantic and debug options])
AC_HELP_STRING([--disable-debug],[Disable debug options]),
[ case "$enable_debug" in
no)
AC_MSG_RESULT(no)
CPPFLAGS="$CPPFLAGS -DNDEBUG"
;;
*) AC_MSG_RESULT(yes)
enable_debug=yes
CPPFLAGS="$CPPFLAGS -DLIBSSH2DEBUG"
CFLAGS="$CFLAGS -g"
dnl set compiler "debug" options to become more picky, and remove
dnl optimize options from CFLAGS
CURL_CC_DEBUG_OPTS
;;
esac
],
enable_debug=no
AC_MSG_RESULT(no)
)
dnl ************************************************************
dnl Enable hiding of internal symbols in library to reduce its size and
dnl speed dynamic linking of applications. This currently is only supported
dnl on gcc >= 4.0 and SunPro C.
dnl
AC_MSG_CHECKING([whether to enable hidden symbols in the library])
AC_ARG_ENABLE(hidden-symbols,
AC_HELP_STRING([--enable-hidden-symbols],[Hide internal symbols in library])
AC_HELP_STRING([--disable-hidden-symbols],[Leave all symbols with default visibility in library]),
[ case "$enableval" in
no)
AC_MSG_RESULT(no)
;;
*)
AC_MSG_CHECKING([whether $CC supports it])
if test "$GCC" = yes ; then
if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then
AC_MSG_RESULT(yes)
AC_DEFINE(LIBSSH2_API, [__attribute__ ((visibility ("default")))], [to make a symbol visible])
CFLAGS="$CFLAGS -fvisibility=hidden"
else
AC_MSG_RESULT(no)
fi
else
dnl Test for SunPro cc
if $CC 2>&1 | grep flags >/dev/null && $CC -flags | grep xldscope= >/dev/null ; then
AC_MSG_RESULT(yes)
AC_DEFINE(LIBSSH2_API, [__global], [to make a symbol visible])
CFLAGS="$CFLAGS -xldscope=hidden"
else
AC_MSG_RESULT(no)
fi
fi
;;
esac ],
AC_MSG_RESULT(no)
)
# Build example applications?
AC_MSG_CHECKING([whether to build example applications])
AC_ARG_ENABLE([examples-build],
AC_HELP_STRING([--enable-examples-build], [Build example applications (this is the default)])
AC_HELP_STRING([--disable-examples-build], [Do not build example applications]),
[case "$enableval" in
no | false)
build_examples='no'
;;
*)
build_examples='yes'
;;
esac], [build_examples='yes'])
AC_MSG_RESULT($build_examples)
AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])
# Build OSS fuzzing targets?
AC_ARG_ENABLE([ossfuzzers],
[AS_HELP_STRING([--enable-ossfuzzers],
[Whether to generate the fuzzers for OSS-Fuzz])],
[have_ossfuzzers=yes], [have_ossfuzzers=no])
AM_CONDITIONAL([USE_OSSFUZZERS], [test "x$have_ossfuzzers" = "xyes"])
# Set the correct flags for the given fuzzing engine.
AC_SUBST([LIB_FUZZING_ENGINE])
AM_CONDITIONAL([USE_OSSFUZZ_FLAG], [test "x$LIB_FUZZING_ENGINE" = "x-fsanitize=fuzzer"])
AM_CONDITIONAL([USE_OSSFUZZ_STATIC], [test -f "$LIB_FUZZING_ENGINE"])
# Checks for header files.
# AC_HEADER_STDC
AC_CHECK_HEADERS([errno.h fcntl.h stdio.h stdlib.h unistd.h sys/uio.h])
AC_CHECK_HEADERS([sys/select.h sys/socket.h sys/ioctl.h sys/time.h])
AC_CHECK_HEADERS([arpa/inet.h netinet/in.h])
AC_CHECK_HEADERS([sys/un.h], [have_sys_un_h=yes], [have_sys_un_h=no])
AM_CONDITIONAL([HAVE_SYS_UN_H], test "x$have_sys_un_h" = xyes)
case $host in
*-*-cygwin* | *-*-cegcc*)
# These are POSIX-like systems using BSD-like sockets API.
;;
*)
AC_CHECK_HEADERS([windows.h winsock2.h ws2tcpip.h])
;;
esac
case $host in
*darwin*|*interix*)
dnl poll() does not work on these platforms
dnl Interix: "does provide poll(), but the implementing developer must
dnl have been in a bad mood, because poll() only works on the /proc
dnl filesystem here"
dnl Mac OS X's poll has funny behaviors, like:
dnl not being able to do poll on no fildescriptors (10.3?)
dnl not being able to poll on some files (like anything in /dev)
dnl not having reliable timeout support
dnl inconsistent return of POLLHUP where other implementations give POLLIN
AC_MSG_NOTICE([poll use is disabled on this platform])
;;
*)
AC_CHECK_FUNCS(poll)
;;
esac
AC_CHECK_FUNCS(gettimeofday select strtoll memset_s)
dnl Check for select() into ws2_32 for Msys/Mingw
if test "$ac_cv_func_select" != "yes"; then
AC_MSG_CHECKING([for select in ws2_32])
AC_TRY_LINK([
#ifdef HAVE_WINSOCK2_H
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <winsock2.h>
#endif
],[
select(0,(fd_set *)NULL,(fd_set *)NULL,(fd_set *)NULL,(struct timeval *)NULL);
],[
AC_MSG_RESULT([yes])
HAVE_SELECT="1"
AC_DEFINE_UNQUOTED(HAVE_SELECT, 1,
[Define to 1 if you have the select function.])
],[
AC_MSG_RESULT([no])
])
fi
AC_FUNC_ALLOCA
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
CURL_CHECK_NONBLOCKING_SOCKET
missing_required_deps=0
if test "${libz_errors}" != ""; then
AS_MESSAGE([ERROR: ${libz_errors}])
missing_required_deps=1
fi
if test "$found_crypto" = "none"; then
AS_MESSAGE([ERROR: ${crypto_errors}])
missing_required_deps=1
fi
if test $missing_required_deps = 1; then
AC_MSG_ERROR([Required dependencies are missing!])
fi
# Configure parameters
LIBSSH2_CHECK_OPTION_WERROR
AC_CONFIG_FILES([Makefile
src/Makefile
tests/Makefile
tests/ossfuzz/Makefile
example/Makefile
docs/Makefile
libssh2.pc])
AC_OUTPUT
AC_MSG_NOTICE([summary of build options:
version: ${LIBSSH2VER}
Host type: ${host}
Install prefix: ${prefix}
Compiler: ${CC}
Compiler flags: ${CFLAGS}
Library types: Shared=${enable_shared}, Static=${enable_static}
Crypto library: ${found_crypto_str}
Clear memory: $enable_clear_memory
Debug build: $enable_debug
Build examples: $build_examples
Path to sshd: $ac_cv_path_SSHD (only for self-tests)
zlib compression: ${found_libz}
])