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configure.ac
configure.ac 28.79 KiB
dnl Process this file with autoconf to produce a configure script.
dnl Note that version string is included in the handshake message, and
dnl must therefore not contain any space.
AC_INIT([lsh], [2.9.1-exp], [bug-lsh@gnu.org])
AC_PREREQ(2.52)
AC_CONFIG_SRCDIR([src/lsh.c])
# Needed to stop autoconf from looking for files in parent directories.
AC_CONFIG_AUX_DIR([.])
AC_CONFIG_HEADER(src/config.h)
# GNU libc defaults to supplying the ISO C library functions only.
# initgroups() and strsignal() are extensions; the _GNU_SOURCE define
# enables these extensions.
# Enable it on all systems; no problems have been reported with it so far.
AC_GNU_SOURCE
# Check options
AC_ARG_ENABLE(debug_alloc,
AC_HELP_STRING([--enable-debug-alloc], [Enable memory allocation sanity checks]),,
[enable_debug_alloc=no])
AH_TEMPLATE([DEBUG_ALLOC],
[Define to enable sanity checking on memory allocation and casting])
if test x$enable_debug_alloc = xyes ; then
AC_DEFINE(DEBUG_ALLOC)
fi
AC_ARG_ENABLE(debug_trace,
AC_HELP_STRING([--enable-debug-trace], [Enable tracing support]),,
[enable_debug_trace=no])
AH_TEMPLATE([DEBUG_TRACE], [Define to enable tracing])
if test x$enable_debug_trace = xyes ; then
AC_DEFINE(DEBUG_TRACE)
fi
AC_ARG_ENABLE(gcov,
AC_HELP_STRING([--enable-gcov], [Instrument for gcov (requires a modern gcc)]),,
[enable_gcov=no])
AC_ARG_ENABLE(profiling,
AC_HELP_STRING([--enable-profiling], [Instrument for gprof profiling]),,
[enable_profiling=no])
# FIXME: Not supported at the moment.
with_zlib=no
# AC_ARG_WITH(zlib,
# AC_HELP_STRING([--without-zlib], [Don't use zlib compression]),,
# [with_zlib=yes])
AC_ARG_WITH(tcpwrappers,
AC_HELP_STRING([--with-tcpwrappers],
[Use tcp-wrappers for filtering connections]),
[if test -z "$withval"; then
with_tcpwrappers=yes;
else
with_tcpwrappers="$withval";
fi],
[with_tcpwrappers=no])
# Checking this variable is delayed until we have checked if zlib is
# actually available.
AC_ARG_ENABLE(pty,
AC_HELP_STRING([--without-pty], [Disable pty support]),,
[enable_pty=yes])
AH_TEMPLATE([WITH_PTY_SUPPORT], [Define to enable pty support])
if test x$enable_pty = xyes ; then
AC_DEFINE(WITH_PTY_SUPPORT)
fi
AC_ARG_ENABLE(srp,
AC_HELP_STRING([--disable-srp], [Disable the (experimental) support for SRP]),,
[enable_srp=yes])
AC_ARG_ENABLE(gss,
AC_HELP_STRING([--disable-gss], [Disable the (experimental) support for GSS]),,
[enable_gss=yes])
AC_ARG_ENABLE(kerberos,
AC_HELP_STRING([--disable-kerberos], [Don't support kerberos]),,
[enable_kerberos=yes])
AC_ARG_ENABLE(pam,
AC_HELP_STRING([--disable-pam], [Don't support PAM]),,
[enable_pam=yes])
AH_TEMPLATE([WITH_SRP], [Define if SRP should be supported])
if test x$enable_srp = xyes ; then
AC_DEFINE(WITH_SRP)
SRP_PROGRAM=srp-gen
fi
AC_SUBST(SRP_PROGRAM)
AC_ARG_ENABLE(initgroups_workaround,
AC_HELP_STRING([--enable-initgroups-workaround],
[Use a special initgroups for supporting more groups]),,
[enable_initgroups_workaround=no])
AH_TEMPLATE([INITGROUPS_WORKAROUND],
[Define to enable the initgroups workaround])
if test x$enable_initgroups_workaround = xyes ; then
AC_DEFINE(INITGROUPS_WORKAROUND)
fi
AC_ARG_ENABLE(tcp_forward,
AC_HELP_STRING([--disable-tcp-forward], [Disable tcp forwarding]),,
[enable_tcp_forward=yes])
AH_TEMPLATE([WITH_TCP_FORWARD], [Define to enable tcp forwarding])
if test x$enable_tcp_forward = xyes ; then
AC_DEFINE(WITH_TCP_FORWARD)
fi
AC_ARG_ENABLE(x11_forward,
AC_HELP_STRING([--disable-x11-forward], [Disable x11 forwarding (proxy only)]),,
[enable_x11_forward=yes])
AH_TEMPLATE([WITH_X11_FORWARD], [Define to enable x11 forwarding])
if test x$enable_x11_forward = xyes ; then
AC_DEFINE(WITH_X11_FORWARD)
fi
AC_ARG_ENABLE(agent_forward,
AC_HELP_STRING([--disable-agent-forward], [Disable auth-agent forwarding (proxy only)]),,
[with_agent_forward=yes])
AH_TEMPLATE([WITH_AGENT_FORWARD],
[Define to enable authentication agent forwarding])
if test x$disable_agent_forward = xyes ; then
AC_DEFINE(WITH_AGENT_FORWARD)
fi
AC_ARG_WITH(scheme, AC_HELP_STRING([[--with-scheme[=PROGRAM]]], [Use a particular scheme implementation]),,
[with_scheme=])
AC_ARG_WITH(system-argp,
AC_HELP_STRING([--with-system-argp], [Use the argp parser in libc]),,
[with_system_argp=no])
AC_ARG_WITH(system-nettle,
AC_HELP_STRING([--with-system-nettle], [Use the installed nettle library]),,
[with_system_nettle=no])
AC_ARG_WITH(system-libspki,
AC_HELP_STRING([--with-system-libspki], [Use the installed spki library]),,
[with_system_libspki=no])
# IPv6 support
AC_ARG_ENABLE(ipv6,
AC_HELP_STRING([--disable-ipv6], [Disable IPv6 support]),,
[enable_ipv6=yes])
# utmp/wtmp logging
AC_ARG_ENABLE(utmp,
AC_HELP_STRING([--disable-utmp], [Disable utmp and wtmp support]),,
[enable_utmp=yes])
AC_ARG_WITH(include-path,
AC_HELP_STRING([--with-include-path], [A colon-separated list of directories to search for include files]),,
[with_include_path=''])
if test x$with_include_path != x ; then
CPPFLAGS="$CPPFLAGS -I`echo $with_include_path | sed 's/:/ -I/g'`"
fi
AC_ARG_WITH(lib-path,
AC_HELP_STRING([--with-lib-path], [A colon-separated list of directories to search for libraries]),,
[with_lib_path=''])
if test x$with_lib_path != x ; then
LDFLAGS="$LDFLAGS -L`echo $with_lib_path | sed 's/:/ -L/g'`"
fi
LSH_RPATH_INIT([`echo $with_lib_path | sed 's/:/ /g'` \
`echo $exec_prefix | sed "s@^NONE@$prefix/lib@g" | sed "s@^NONE@$ac_default_prefix/lib@g"` \
/usr/local/lib /sw/local/lib /sw/lib \
/usr/gnu/lib /opt/gnu/lib /sw/gnu/lib /usr/freeware/lib /usr/pkg/lib])
dnl echo RPATH_CANDIDATE_DIRS = $RPATH_CANDIDATE_DIRS
# Checks for programs.
AC_PROG_CC
AC_PROG_MAKE_SET
AC_PROG_RANLIB
if test "x$am_cv_prog_cc_stdc" = xno ; then
AC_MSG_ERROR([the C compiler doesn't handle ANSI-C])
fi
AC_PROG_INSTALL
# According to the autoconf manual, needs install-sh from
# autoconf-2.60 or automake-1.10 to avoid races.
AC_PROG_MKDIR_P
LSH_DEPENDENCY_TRACKING
if test x$enable_dependency_tracking = xyes ; then
# Since the makefiles use include to get the dependency files, we must
# make sure that the files exist.
AC_CONFIG_COMMANDS([dummy-dep-files], [(cd "$srcdir/src" && echo *.c testsuite/*.c) \
| tr ' ' '\n' |sed 's/\.c$//' \
| (cd src && while read f; do echo > "$f.o.d"; done \
&& for f in format lsh_string parse werror; do echo > "$f.mo.d"; done)
])
fi
# Use a particular scheme implementation?
if test x$with_scheme != x ; then
# If an absolute path is given, don't AC_PATH_PROG but just use it
if grep "^/" > /dev/null <<EOF
$with_scheme
EOF
then
SCHEME_PROGRAM="$with_scheme"
else
AC_PATH_PROG(SCHEME_PROGRAM, $with_scheme,, $PATH)
fi
else
AC_PATH_PROGS(SCHEME_PROGRAM, guile scsh,, $PATH)
fi
if test "x$SCHEME_PROGRAM" = x ; then
AC_MSG_WARN([No scheme implementation found.
This is fine as long as you don't modify the source files.])
SCHEME_PROGRAM=false
fi
SCHEME_NAME=`basename $SCHEME_PROGRAM`
AC_SUBST(SCHEME_NAME)
if test "x$GROFF" = x; then
AC_PATH_PROG(GROFF, groff,, $PATH)
fi
AC_ARG_VAR(GROFF, groff)
if test "x$M4" = x; then
AC_PATH_PROG(M4, m4, m4)
fi
AC_ARG_VAR(M4, M4 macro processor)
# Checks for header files.
AC_HEADER_STDC
# We don't look in gmp2 anymore, as we need gmp-3.1 or better.
AC_CHECK_HEADERS(gmp.h,,
AC_MSG_ERROR([gmp.h not found]))
AC_CHECK_HEADERS(fcntl.h strings.h sys/time.h unistd.h)
AC_CHECK_HEADERS(shadow.h)
if test x$with_zlib = xyes; then
AC_CHECK_HEADERS(zlib.h,, [with_zlib=no])
fi
AC_CHECK_HEADERS(libutil.h)
AC_CHECK_HEADERS(crypt.h)
AC_CHECK_HEADERS(pty.h)
AC_CHECK_HEADERS(stropts.h)
AC_CHECK_HEADERS(syslog.h)
AC_CHECK_HEADERS(argp.h)
AC_CHECK_HEADERS(sys/resource.h)
AC_CHECK_HEADERS(sys/filio.h)
AC_CHECK_HEADERS(ucred.h)
AC_CHECK_HEADERS(utmp.h, [have_utmp_h=yes], [have_utmp_h=no])
AC_CHECK_HEADERS(utmpx.h, [have_utmpx_h=yes], [have_utmpx_h=no])
dnl With current autoconfs we can't check for struct ut_tv with
dnl AC_CHECK_MEMBERS, but we can check for sub members. Leave thednl ut_tv check for clarity.
if test x$have_utmp_h = xyes; then
# Currently, no support for pure bsd systems where login(3) and
# friends are the only library functions for updating the utmp and
# wtmp data. FIXME: Don't do this if we're going to use the the utmpx
# functions instead.
AC_CHECK_FUNC([pututline],,[enable_utmp=no])
AC_CHECK_MEMBERS([struct utmp.ut_host,
struct utmp.ut_name,
struct utmp.ut_user,
struct utmp.ut_time,
struct utmp.ut_tv,
struct utmp.ut_tv.tv_sec,
struct utmp.ut_id,
struct utmp.ut_syslen,
struct utmp.ut_session,
struct utmp.ut_pid,
struct utmp.ut_exit,
struct utmp.ut_exit.e_termination,
struct utmp.ut_exit.__e_termination,
struct utmp.ut_exit.ut_termination,
struct utmp.ut_addr,
struct utmp.ut_addr_v6],,,
[# if HAVE_SYS_TYPES_H
# include <sys/types.h>
# #endif
# if HAVE_UTMP_H
# include <utmp.h>
# endif
])
fi
if test x$have_utmpx_h = xyes; then
AC_CHECK_MEMBERS([struct utmpx.ut_host,
struct utmpx.ut_name,
struct utmpx.ut_user,
struct utmpx.ut_time,
struct utmpx.ut_id,
struct utmpx.ut_tv,
struct utmpx.ut_tv.tv_sec,
struct utmpx.ut_syslen,
struct utmpx.ut_session,
struct utmpx.ut_pid,
struct utmpx.ut_exit,
struct utmpx.ut_exit.e_termination,
struct utmpx.ut_exit.__e_termination,
struct utmpx.ut_exit.ut_termination,
struct utmpx.ut_addr,
struct utmpx.ut_addr_v6],,,
[# if HAVE_UTMPX_H
# include <utmpx.h>
# endif
])
fi
AH_TEMPLATE([WITH_UTMP], [For utmp support])
if test x$enable_utmp = xyes ; then
AC_DEFINE(WITH_UTMP)
fi
AH_TEMPLATE([WITH_GSS_K5], [Whether to use gss K5 authorization (Heimdal/MIT)])
if test x$enable_gss != xno; then
if test x$enable_gss = xk5; then
AC_CHECK_PROG(KRB5CONFIG, krb5-config, krb5-config, no)
if test x$KRB5CONFIG != xno; then
CPPFLAGS="$CPPFLAGS `$KRB5CONFIG --cflags gssapi`"
LIBS="$LIBS `$KRB5CONFIG --libs gssapi`"
AC_CHECK_HEADERS([gssapi.h gssapi/gssapi.h gssapi/gssapi_generic.h])
AC_DEFINE(WITH_GSS_K5) AC_CHECK_DECL(GSS_C_NT_HOSTBASED_SERVICE,, [
AC_DEFINE(GSS_C_NT_HOSTBASED_SERVICE,
gss_nt_service_name,
[Work around buggy MIT library])], [
#ifdef HAVE_GSSAPI_H
#include <gssapi.h>
#endif
#ifdef HAVE_GSSAPI_GSSAPI_H
#include <gssapi/gssapi.h>
#endif
#ifdef HAVE_GSSAPI_GSSAPI_GENERIC_H
#include <gssapi/gssapi_generic.h>
#endif
])
fi
else
AC_CHECK_HEADERS(gss.h,, [enable_gss=no])
AC_CHECK_LIB(gss, gss_check_version,, [enable_gss=no])
fi
fi
if test x$enable_kerberos = xyes; then
AC_CHECK_HEADERS(krb5.h,, [enable_kerberos=no])
fi
if test x$enable_pam = xyes; then
AC_CHECK_HEADERS(security/pam_appl.h,, [enable_pam=no])
fi
# Some systems (in particular, Unixware) doesn't have socklen_t, but
# uses size_t. Falling back to int will cause some warnings.
# AC_CHECK_TYPE doesn't work, probably because the type in
# question is not defined in sys/types.h.
LSH_TYPE_SOCKLEN_T
# Checks for libraries
AC_CHECK_LIB(gmp, __gmpz_getlimbn,,
[AC_MSG_ERROR(
[GNU MP not found, or not 3.1 or up, see http://www.swox.com/gmp.])])
LSH_RPATH_FIX
AC_CHECK_LIB([oop], [oop_sys_new],,
[AC_MSG_ERROR([liboop is missing. Get liboop from http://www.liboop.org])])
LSH_RPATH_FIX
if test x$with_zlib = xyes; then
AC_CHECK_LIB(z, inflate,, [with_zlib=no])
fi
if test x$with_zlib = xyes; then
LSH_RPATH_FIX
fi
# FIXME: Should we let people use --with-tcpwrappers=/here/they/are?
if test x$with_tcpwrappers = xyes; then
AC_CHECK_LIB(wrap, request_init,,
[
AC_MSG_WARN([Failed to link libwrap, you might try adding -lsocket to LDFLAGS])
with_tcpwrappers=no
])
AC_CHECK_HEADER(tcpd.h,, [with_tcpwrappers=no])
if test x$with_tcpwrappers = xno; then AC_MSG_WARN([Failed to find a working tcpwrappers setup, disabling wrappers])
fi
fi
if test x$with_tcpwrappers = xyes; then
LSH_RPATH_FIX
AC_DEFINE(WITH_TCPWRAPPERS,1,[Whatever to use tcpwrappers])
else
AC_DEFINE(WITH_TCPWRAPPERS,0,[Whatever to use tcpwrappers])
fi
# X11 stuff. We only need Xauth, usually located in libXau.
# FIXME: Use AC_PATH_XTRA instead?
AC_PATH_X
if test -z "$no_x" ; then
if test -n "$x_includes" ; then
CPPFLAGS="$CPPFLAGS -I$x_includes"
fi
if test -n "$x_libraries" ; then
LDFLAGS="$LDFLAGS -L$x_libraries"
LSH_RPATH_ADD($x_libraries)
fi
fi
# On Solaris 5.8, it seams Xauth-related functions are in libX11, not
# libXau.
AC_CHECK_HEADERS(X11/Xauth.h)
AC_SEARCH_LIBS(XauGetAuthByAddr, Xau, X11)
LSH_RPATH_FIX
# Move these checks for system libraries earlier, before checks for
# gmp, liboop etc
# glibc has a nis-library "libnsl", which we don't need. So use
# AC_SEARCH_LIBS rather than AC_CHECK_LIB.
AC_SEARCH_LIBS(gethostbyname, nsl)
AC_SEARCH_LIBS(inet_ntop, nsl)
AC_CHECK_LIB(socket, setsockopt)
AC_CHECK_LIB(crypt, crypt)
AC_CHECK_LIB(xnet, inet_addr)
# logwtmp is also in libutil
AC_CHECK_LIB(util, openpty)
# This macro is new in autoconf-2.13
AC_SEARCH_LIBS(syslog, bsd socket inet, [AC_DEFINE(HAVE_SYSLOG)])
AH_TEMPLATE([WITH_ZLIB], [Define if zlib should be used])
# Should we use zlib?
if test x$with_zlib = xyes ; then
AC_DEFINE(WITH_ZLIB)
fi
AH_TEMPLATE([WITH_GSS], [Define if gss should be used])
# Should we use gss?
if test x$enable_gss != xno ; then
AC_DEFINE(WITH_GSS)
fi
# The kerberos libraries are needed only to support the
# krb-check-passwd program, so we put them $KRB_LIBS, not in the
# ordinary $LIBS.
if test x$enable_kerberos = xyes; then
LSH_CHECK_KRB_LIB(roken, strlcpy)
LSH_CHECK_KRB_LIB(resolv, dn_expand)
LSH_CHECK_KRB_LIB(des, des_cbc_encrypt)
LSH_CHECK_KRB_LIB(asn1, der_get_octet_string) # Check for krb5_cc_gen_new too?
# krb5_verify_user_lrealm seems to be unique to heimdal
LSH_CHECK_KRB_LIB(krb5, krb5_verify_user_lrealm,, [enable_kerberos=no])
fi
AH_TEMPLATE([WITH_KERBEROS], [For kerberos])
if test x$enable_kerberos = xyes; then
AC_DEFINE(WITH_KERBEROS)
KRB_PROGRAM=lsh-krb-checkpw
fi
AC_SUBST(KRB_LIBS)
AC_SUBST(KRB_PROGRAM)
AH_TEMPLATE([WITH_PAM], [For PAM])
if test x$enable_pam = xyes; then
AC_CHECK_LIB(pam,pam_start,, enable_pam=no )
if test x$enable_pam = xyes; then
AC_DEFINE(WITH_PAM)
PAM_PROGRAM=lsh-pam-checkpw
else
AC_MSG_WARN([pam_start not found in libpam, disabling PAM])
fi
fi
AC_SUBST(PAM_PROGRAM)
AH_TEMPLATE([WITH_GCOV], [Use gcov])
if test "x$enable_gcov" = "xyes"; then
CFLAGS="$CFLAGS -ftest-coverage -fprofile-arcs"
AC_DEFINE(WITH_GCOV)
fi
if test "x$enable_profiling" = "xyes"; then
CFLAGS="$CFLAGS -pg"
fi
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_UID_T
AC_TYPE_SIZE_T
AC_HEADER_TIME
# Needed by the supplied memcmp.c
AC_C_BIGENDIAN
# FIXME: We should check that a pid_t fits in an int
# Checks for library functions.
LSH_FUNC_ALLOCA
LSH_FUNC_STRERROR
LSH_FUNC_STRSIGNAL
AC_FUNC_MEMCMP
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(select socket strtol alarm)
AC_CHECK_FUNCS(getrusage gettimeofday)
AC_CHECK_FUNCS(getspnam)
AC_CHECK_FUNCS(vsnprintf inet_aton inet_ntop)
AC_CHECK_FUNCS(openpty)
AC_CHECK_FUNCS(logwtmp login logout pututline pututxline updwtmp updwtmpx)
AC_CHECK_FUNCS(getaddrinfo getnameinfo gai_strerror)
AC_CHECK_FUNCS(setrlimit getdtablesize)
AC_FUNC_GETPGRP
AC_CHECK_FUNCS(syslog)
# HP-UX doesn't have seteuid
AC_CHECK_FUNCS(seteuid setresuid)
AH_BOTTOM(
[#if !HAVE_SETEUID
# if HAVE_SETRESUID
# define seteuid(uid) setresuid(-1, (uid), -1)
# endif
#endif])
# FIXME: Is there a better way in autoconf 2.50?
AC_CACHE_CHECK([if netdb.h defines AI_NUMERICHOST],
lsh_cv_sys_ai_numerichost,
[AC_EGREP_CPP(yes,
[#include <netdb.h>
#ifdef AI_NUMERICHOST
yes
#endif
], lsh_cv_sys_ai_numerichost=yes,
lsh_cv_sys_ai_numerichost=no)])
AH_TEMPLATE([HAVE_AI_NUMERICHOST], [Define if AI_NUMERICHOST exists])
if test x$lsh_cv_sys_ai_numerichost = xyes ; then
AC_DEFINE(HAVE_AI_NUMERICHOST)
fi
# Test if the libc includes a good enough argp.
# FIXME: Doesn't check for the argp-help bug.
if test x$with_system_argp = xyes ; then
LSH_LIB_ARGP(,with_system_argp=no)
fi
BUILD_SUBDIRS=''
LIB_ARGP=''
if test x$with_system_argp = xno ; then
AC_CONFIG_COMMANDS([argp-symlinks],
[argp_srcdir="`cd "$srcdir/argp" && pwd`"
(cd src && rm -f argp argp_builddir && ln -s ../argp argp_builddir && ln -s $argp_srcdir argp)
])
BUILD_SUBDIRS="$BUILD_SUBDIRS argp"
LIB_ARGP="-largp"
fi
if test x$with_system_nettle = xno ; then
AC_CONFIG_COMMANDS([nettle-symlinks],
[nettle_srcdir="`cd "$srcdir/nettle" && pwd`"
for d in spki src ; do
(mkdir $d 2>/dev/null; cd $d && rm -f nettle nettle_builddir && ln -s ../nettle nettle_builddir && ln -s $nettle_srcdir nettle)
done])
BUILD_SUBDIRS="$BUILD_SUBDIRS nettle"
fi
if test x$with_system_libspki = xno ; then
AC_CONFIG_COMMANDS([libspki-symlinks],
[spki_srcdir="`cd "$srcdir/spki" && pwd`"
(cd src && rm -f spki spki_builddir && ln -s ../spki spki_builddir && ln -s $spki_srcdir spki)
])
BUILD_SUBDIRS="$BUILD_SUBDIRS spki"
fi
AC_SUBST(BUILD_SUBDIRS)
AC_SUBST(LIB_ARGP)
# Check for broken shutdown
AC_CACHE_CHECK(for working shutdown on AF_UNIX sockets,
lsh_cv_func_shutdown_works_on_unix_sockets,
[
AC_TRY_RUN([
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
/* Creates a one-way socket connection. Returns 1 on success, 0 on
* failure. fds[0] is for reading, fds[1] for writing (like for the
* pipe() system call). */
static int make_pipe(int *fds)
{
#ifndef SHUT_RD
#define SHUT_RD 0
#define SHUT_WR 1
#define SHUT_RDWR 2
#endif
if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) < 0)
{
fprintf(stderr, "socketpair() failed: %s\n", strerror(errno));
return 0;
}
fprintf(stderr, "Created socket pair. Using fd:s %d <-- %d\n", fds[0], fds[1]);
if(shutdown(fds[0], SHUT_WR) < 0)
{
fprintf(stderr, "shutdown(%d, SHUT_WR) failed: %s\n",
fds[0], strerror(errno));
return 0;
}
if (shutdown(fds[1], SHUT_RD) < 0)
{
fprintf(stderr, "shutdown(%d, SHUT_RD) failed: %s\n",
fds[1], strerror(errno));
return 0;
}
return 1;
}
int main(int argc, char **argv)
{
int fds[2];
if (!make_pipe(fds))
exit(1);
if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
{
fprintf(stderr, "signal failed.\n");
exit(1);
}
if ( (write(fds[1], "foo", 3) < 0)
&& (errno == EPIPE))
exit(1);
exit(0);
}
], lsh_cv_func_shutdown_works_on_unix_sockets=yes,
lsh_cv_func_shutdown_works_on_unix_sockets=no,
lsh_cv_func_shutdown_works_on_unix_sockets=yes)])
AH_TEMPLATE([SHUTDOWN_WORKS_WITH_UNIX_SOCKETS],
[Define to indicate that shutdown seems to work properly])
if test x$lsh_cv_func_shutdown_works_on_unix_sockets = xyes ; then AC_DEFINE(SHUTDOWN_WORKS_WITH_UNIX_SOCKETS)
fi
AC_CACHE_CHECK(
[for working UNIX98 ptys],
lsh_cv_sys_unix98_ptys,
AC_TRY_RUN([
/* Try to obtain a working UNIX98-style pty master and slave */
/* Based on example code from the GNU C library documentation */
#include <stdlib.h> /* EXIT_FAILURE, EXIT_SUCCESS, ptsname */
#include <unistd.h> /* close(2) */
#include <sys/types.h> /* open(2) */
#include <sys/stat.h> /* - " - */
#ifdef HAVE_FCNTL_H
# include <fcntl.h> /* - " - */
#endif
#ifdef HAVE_STROPTS_H
# include <stropts.h> /* isastream() */
#endif
int main(int argc, char* argv[]) {
int master, slave;
char *name;
master = open("/dev/ptmx", O_RDWR); /* PTY master multiplex */
if (master < 0) {
exit(EXIT_FAILURE);
}
if (grantpt(master) < 0 || unlockpt(master) < 0)
goto close_master;
name = ptsname(master);
if (name == NULL)
goto close_master;
slave = open(name, O_RDWR);
if (slave == -1)
goto close_master;
#ifdef HAVE_STROPTS_H
if (isastream(slave))
{
if (ioctl(slave, I_PUSH, "ptem") < 0
|| ioctl(slave, I_PUSH, "ldterm") < 0)
goto close_slave;
}
#endif
exit(0);
close_slave:
close (slave);
close_master:
close (master);
exit(1);
}
],
[lsh_cv_sys_unix98_ptys=yes],
[lsh_cv_sys_unix98_ptys=no],
# Pessimistic default for cross compilation.
[lsh_cv_sys_unix98_ptys=no]))
AH_TEMPLATE([HAVE_UNIX98_PTYS],
[Define if a we have working UNIX98 pty handling])
if test x$lsh_cv_sys_unix98_ptys = xyes; then
AC_DEFINE(HAVE_UNIX98_PTYS)
else
AC_MSG_WARN([No support for UNIX98 PTYs. PTY support disabled.])fi
# Check that FIONREAD exists, works, and uses an argument of type int, not long.
AC_CACHE_CHECK(
[for FIONREAD with int argument],
lsh_cv_sys_ioctl_fionread_int,
[AC_TRY_RUN([
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#if HAVE_SYS_FILIO_H
#include <sys/filio.h>
#endif
int main(int argc, char **argv)
{
#ifdef FIONREAD
union {
int i[2];
long l;
} val;
int fds[2];
int res;
if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) < 0)
{
printf("socketpair failed: errno = %d.\n", errno);
return 1;
}
val.i[0] = 0xdeadbeaf;
val.i[1] = 0xdeadbeaf;
do
res = write(fds[1], "xxx", 3);
while (res < 0 && errno == EINTR);
if (res != 3)
{
printf("write failed: errno = %d.\n", errno);
return 1;
}
if (ioctl(fds[0], FIONREAD, val.i) < 0)
{
printf("ioctl FIONREAD failed: errno = %d.\n", errno);
return 1;
}
if (val.i[0] == 3 && val.i[1] == 0xdeadbeaf)
return 0;
#endif
return 1;
}
], lsh_cv_sys_ioctl_fionread_int=yes,
lsh_cv_sys_ioctl_fionread_int=no,
lsh_cv_sys_ioctl_fionread_int=no)])
AH_TEMPLATE([HAVE_IOCTL_FIONREAD],
[Define if the FIONREAD ioctl works, and uses an argument of type int])
if test x$lsh_cv_sys_ioctl_fionread_int = xyes; then
AC_DEFINE([HAVE_IOCTL_FIONREAD])
fi
# Check that credentials passing work
AC_CACHE_CHECK(
[for credentials passing],
lsh_cv_sys_ucred_passing,[AC_TRY_RUN([
/* For CMSG_SPACE and friends on Solaris */
#define _XPG4_2
#include <errno.h>
#include <stdio.h>
#include <string.h>
/* Linux: For struct ucred */
#include <sys/types.h>
#include <sys/socket.h>
/* Solaris ucred support */
#if HAVE_UCRED_H
#include <ucred.h>
#endif
int main (int argc, char **argv)
{
int pipe[2];
int type;
struct msghdr hdr;
struct cmsghdr *cmsg;
struct iovec io;
void *creds_buf;
size_t creds_size;
size_t creds_space;
int controllen;
char buf[3];
int res;
int yes = 1;
#ifdef SO_RECVUCRED
/* Solaris' ucred passing works with SOCK_DGRAM sockets only */
type = SOCK_DGRAM;
#else
type = SOCK_STREAM;
#endif
if (socketpair(AF_UNIX, type, 0, pipe) < 0)
{
printf("socketpair failed: errno = %d.\n", errno);
return 1;
}
#if defined (SO_PASSCRED)
/* For Linux */
if (setsockopt(pipe[1], SOL_SOCKET, SO_PASSCRED,
&yes, sizeof(yes)) < 0)
{
printf("setsockopt SO_PASSCRED failed: %d.\n", errno);
return 1;
}
#elif defined (SO_RECVUCRED)
/* Solaris */
if (setsockopt(pipe[1], SOL_SOCKET, SO_RECVUCRED,
&yes, sizeof(yes)) < 0)
{
printf("setsockopt SO_RECVUCRED failed: %d.\n", errno);
return 1;
}
#endif
#ifdef SCM_CREDENTIALS
creds_size = sizeof(struct ucred);
#else
creds_size = 0;
#endif
creds_space = CMSG_SPACE(creds_size);
creds_buf = malloc(creds_space); if (creds_space && !creds_buf)
{
printf("malloc failed\n");
return 1;
}
io.iov_base = (void *) "foo";
io.iov_len = 3;
hdr.msg_name = NULL;
hdr.msg_namelen = 0;
hdr.msg_iov = &io;
hdr.msg_iovlen = 1;
hdr.msg_controllen = creds_space;
hdr.msg_control = creds_buf;
#ifdef SCM_CREDENTIALS
/* Linux style credentials */
cmsg = CMSG_FIRSTHDR(&hdr);
{
struct ucred *creds;
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_CREDENTIALS;
cmsg->cmsg_len = CMSG_LEN(sizeof(*creds));
creds = (struct ucred *) CMSG_DATA(cmsg);
creds->pid = getpid();
creds->uid = getuid();
creds->gid = getgid();
hdr.msg_controllen = CMSG_SPACE(sizeof(*creds));
}
#else
hdr.msg_controllen = 0;
#endif
do
res = sendmsg(pipe[0], &hdr, 0);
while (res < 0 && errno == EINTR);
if (res < 0)
{
printf("sendmsg failed: errno = %d.\n", errno);
return 1;
}
memset(buf, 0, sizeof(buf));
if (creds_space)
memset(creds_buf, 0, creds_space);
io.iov_base = (void *) buf;
io.iov_len = sizeof(buf);
hdr.msg_name = NULL;
hdr.msg_namelen = 0;
hdr.msg_iov = &io;
hdr.msg_iovlen = 1;
hdr.msg_controllen = creds_space;
hdr.msg_control = creds_buf;
do
res = recvmsg(pipe[1], &hdr, 0);
while (res < 0 && errno == EINTR);
if (res < 0)
{
printf("recvmsg failed: errno = %d.\n", errno);
return 1; }
if (res != 3)
{
printf("recvmsg returned unexpected count\n");
return 1;
}
if (memcmp (buf, "foo", 3) != 0)
{
printf("recvmsg returned unexpected data\n");
return 1;
}
/* Process ancillary data */
for (cmsg = CMSG_FIRSTHDR(&hdr); cmsg; cmsg = CMSG_NXTHDR(&hdr, cmsg))
{
pid_t pid;
uid_t uid;
gid_t gid;
if (cmsg->cmsg_level != SOL_SOCKET)
continue;
switch (cmsg->cmsg_type)
{
#if defined (SCM_CREDENTIALS)
case SCM_CREDENTIALS:
{
struct ucred *creds;
if (cmsg->cmsg_len != CMSG_LEN(sizeof(*creds)))
continue;
creds = (struct ucred *) CMSG_DATA(cmsg);
pid = creds->pid;
uid = creds->uid;
gid = creds->gid;
got_creds:
if (pid != getpid())
{
printf("Received unexpected pid %d\n", (int) pid);
return 1;
}
if (uid != getuid())
{
printf("Received unexpected uid %d\n", (int) uid);
return 1;
}
if (gid != getgid())
{
printf("Received unexpected gid %d\n", (int) gid);
return 1;
}
/* Success! */
return 0;
}
#elif defined (SCM_UCRED)
case SCM_UCRED:
{
ucred_t *creds;
creds = (ucred_t *) CMSG_DATA(cmsg);
pid = ucred_getpid(creds);
uid = ucred_geteuid(creds);
gid = ucred_getegid(creds);
goto got_creds;
}
#endif
} }
printf("No creds received.\n");
return 1;
}
], lsh_cv_sys_ucred_passing=yes,
lsh_cv_sys_ucred_passing=no,
lsh_cv_sys_ucred_passing=no)])
AH_TEMPLATE([HAVE_SOCKET_CREDENTIALS_PASSING],
[Define if credentials passing over unix sockets work])
if test x$lsh_cv_sys_ucred_passing = xyes; then
AC_DEFINE([HAVE_SOCKET_CREDENTIALS_PASSING])
fi
LSH_GCC_ATTRIBUTES
AC_MSG_CHECKING(for BSD pty names)
AH_TEMPLATE([PTY_BSD_SCHEME_FIRST_CHARS],
[Possible first characters in a /dev/ptyXX name])
AH_TEMPLATE([PTY_BSD_SCHEME_SECOND_CHARS],
[Possible second characters in a /dev/ptyXX name])
# FIXME: What is most portable, tr -d '\n' or tr -d '\012' ?
AC_DEFINE_UNQUOTED(PTY_BSD_SCHEME_FIRST_CHARS, "`ls /dev/pty* | cut -c 9-9 | uniq | tr -d '\n'`")
AC_DEFINE_UNQUOTED(PTY_BSD_SCHEME_SECOND_CHARS, "`ls /dev/pty* | cut -c 10-10 | sort | uniq | tr -d '\n'`")
# FIXME: How can we test if the bsd scheme is likely to work?
AH_TEMPLATE([PTY_BSD_SCHEME], [Traditional BSD pty handling])
AC_DEFINE(PTY_BSD_SCHEME)
AC_MSG_RESULT([done])
# IPv6 support
if test x$enable_ipv6 = xyes ; then
if test x$ac_cv_func_getaddrinfo != xyes ; then
AC_MSG_WARN([getaddrinfo not found. Disabling IPv6 support])
enable_ipv6=no
elif test x$ac_cv_func_gai_strerror != xyes ; then
AC_MSG_WARN([gai_strerror not found. Disabling IPv6 support])
enable_ipv6=no
elif test x$lsh_cv_sys_ai_numerichost != xyes ; then
AC_MSG_WARN([AI_NUMERICHOST not defined. Disabling IPv6 support])
enable_ipv6=no
fi
fi
AH_TEMPLATE([WITH_IPV6], [For Ipv6 support])
if test x$enable_ipv6 = xyes ; then
AC_DEFINE(WITH_IPV6)
fi
# Unconditionally configure nettle; otherwise make dist won't work
AC_CONFIG_SUBDIRS(argp nettle spki)
# AC_CONFIG_SUBDIRS(src/sftp)
# Set these flags *last*, or else the test programs won't compile
if test x$GCC = xyes ; then
# Using -ggdb3 makes (some versions of) Redhat's gcc-2.96 dump core
if "$CC" --version | grep '^2\.96$' 1>/dev/null 2>&1; then
true
else
CFLAGS="$CFLAGS -ggdb3"
fi
# FIXME: It would be better to actually test if this option works and/or is needed.
# Or perhaps use -funsigned-char.
if "$CC" --version | grep 'gcc.* 4\.' 1>/dev/null 2>&1; then
CFLAGS="$CFLAGS -Wno-pointer-sign"
fi
CFLAGS="$CFLAGS -Wall -W \ -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes \
-Wpointer-arith -Wbad-function-cast -Wnested-externs"
# Don't enable -Wcast-align as it results in tons of warnings in the
# DES code. And when using stdio.
# Don't enable -Waggregate-return, as that causes warnings for glibc
# inttypes.h.
fi
# Used by contrib/solpkg.sh.in.
AC_SUBST(BUILD_ARCH, `uname -p`)
AC_SUBST(BUILD_OSSYS,`uname -s`)
AC_SUBST(BUILD_OSREV,`uname -r`)
# Should also generate rsync/Makefile and sftp
AC_CONFIG_FILES([Makefile src/config.make src/Makefile src/testsuite/Makefile
doc/Makefile misc/Makefile
contrib/Makefile contrib/lsh.spec contrib/solpkg.sh])
AC_OUTPUT