AC_INIT(ssh.c) AC_CONFIG_HEADER(config.h) AC_CANONICAL_HOST # C Compiler features if test "$GCC" = "yes"; then CFLAGS="$CFLAGS -Wall"; fi AC_C_INLINE # Checks for programs. AC_PROG_CC AC_PROG_CPP AC_PROG_RANLIB AC_PROG_INSTALL AC_CHECK_PROG(AR, ar, ar) AC_PATH_PROG(PERL, perl) AC_SUBST(PERL) # Check for some target-specific stuff case "$host" in *-*-aix*) AFS_LIBS="-lld" AC_DEFINE(BROKEN_GETADDRINFO) ;; *-*-hpux10*) if test -z "$GCC"; then CFLAGS="$CFLAGS -Aa" fi CFLAGS="$CFLAGS -D_HPUX_SOURCE" AC_DEFINE(IPADDR_IN_DISPLAY) AC_DEFINE(USE_UTMPX) AC_MSG_CHECKING(for HPUX trusted system password database) if test -f /tcb/files/auth/system/default; then AC_MSG_RESULT(yes) AC_DEFINE(HAVE_HPUX_TRUSTED_SYSTEM_PW) LIBS="$LIBS -lsec" AC_MSG_WARN([This configuration is untested]) else AC_MSG_RESULT(no) AC_DEFINE(DISABLE_SHADOW) fi MANTYPE='$(CATMAN)' mansubdir=cat ;; *-*-irix5*) MANTYPE='$(CATMAN)' no_libsocket=1 no_libnsl=1 ;; *-*-irix6*) MANTYPE='$(CATMAN)' AC_MSG_WARN([*** Irix 6.x is not tested, please report you experiences *** ]) no_libsocket=1 no_libnsl=1 ;; *-*-linux*) no_dev_ptmx=1 need_pty_removed_on_close=1 ;; *-*-netbsd*) need_dash_r=1 ;; *-*-solaris*) need_dash_r=1 LDFLAGS="-L/usr/ucblib" AC_DEFINE(USE_UTMPX) ;; *-*-sysv*) AC_DEFINE(USE_UTMPX) MANTYPE='$(CATMAN)' mansubdir=cat LIBS="$LIBS -lgen -lsocket" ;; esac # Checks for libraries. AC_CHECK_LIB(z, deflate, ,AC_MSG_ERROR([*** zlib missing - please install first ***])) AC_CHECK_LIB(util, login, AC_DEFINE(HAVE_LIBUTIL_LOGIN) LIBS="$LIBS -lutil") if test -z "$no_libsocket" ; then AC_CHECK_LIB(nsl, yp_match, , ) fi if test -z "$no_libnsl" ; then AC_CHECK_LIB(socket, main, , ) fi # Checks for header files. AC_CHECK_HEADERS(bstring.h endian.h lastlog.h login.h maillock.h netdb.h netgroup.h paths.h poll.h pty.h shadow.h security/pam_appl.h sys/bitypes.h sys/bsdtty.h sys/cdefs.h sys/poll.h sys/select.h sys/stropts.h sys/sysmacros.h sys/time.h sys/ttcompat.h stddef.h util.h utmp.h utmpx.h) # Checks for library functions. AC_CHECK_FUNCS(arc4random bindresvport_af freeaddrinfo gai_strerror getaddrinfo getnameinfo innetgr md5_crypt mkdtemp openpty rresvport_af setenv seteuid setlogin setproctitle setreuid snprintf strlcat strlcpy updwtmpx vsnprintf _getpty) AC_CHECK_FUNC(login, [AC_DEFINE(HAVE_LOGIN)], [AC_CHECK_LIB(bsd, login, [LIBS="$LIBS -lbsd"; AC_DEFINE(HAVE_LOGIN)])] ) AC_CHECK_FUNC(daemon, [AC_DEFINE(HAVE_DAEMON)], [AC_CHECK_LIB(bsd, daemon, [LIBS="$LIBS -lbsd"; AC_DEFINE(HAVE_DAEMON)])] ) AC_CHECK_FUNC(getpagesize, [AC_DEFINE(HAVE_GETPAGESIZE)], [AC_CHECK_LIB(ucb, getpagesize, [LIBS="$LIBS -lucb"; AC_DEFINE(HAVE_GETPAGESIZE)])] ) AC_ARG_WITH(pam, [ --without-pam Disable PAM support ], [ if test "x$withval" = "xno" ; then no_pam=1 AC_DEFINE(DISABLE_PAM) fi ] ) if test -z "$no_pam" -a "x$ac_cv_header_security_pam_appl_h" = "xyes" ; then AC_CHECK_LIB(dl, dlopen, , ) LIBS="$LIBS -lpam" # Check PAM strerror arguments (old PAM) AC_MSG_CHECKING([whether pam_strerror takes only one argument]) AC_TRY_COMPILE( [ #include #include ], [(void)pam_strerror((pam_handle_t *)NULL, -1);], [AC_MSG_RESULT(no)], [ AC_DEFINE(HAVE_OLD_PAM) AC_MSG_RESULT(yes) ] ) fi # The big search for OpenSSL AC_ARG_WITH(ssl-dir, [ --with-ssl-dir=PATH Specify path to OpenSSL installation ], [ if test "x$withval" != "$xno" ; then tryssldir=$withval fi ] ) saved_LIBS="$LIBS" saved_CFLAGS="$CFLAGS" if test "x$prefix" != "xNONE" ; then tryssldir="$tryssldir $prefix" fi AC_MSG_CHECKING([for OpenSSL/SSLeay directory]) for ssldir in "" $tryssldir /usr /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/pkg /opt /opt/openssl ; do if test ! -z "$ssldir" ; then LIBS="$saved_LIBS -L$ssldir" CFLAGS="$CFLAGS -I$ssldir/include" if test "x$need_dash_r" = "x1" ; then LIBS="$LIBS -R$ssldir/lib" fi fi LIBS="$LIBS -lcrypto" AC_TRY_RUN( [ #include #include #include int main(void) {RSA *key; char seed[2048];memset(seed, 0, sizeof(seed)); RAND_seed(seed, sizeof(seed));key=RSA_generate_key(32,3,NULL,NULL); return(key==NULL);} ], [ AC_DEFINE(HAVE_OPENSSL) found_crypto=1 break; ], [] ) AC_TRY_RUN( [ #include #include #include int main(void) {RSA *key; char seed[2048];memset(seed, 0, sizeof(seed)); RAND_seed(seed, sizeof(seed));key=RSA_generate_key(32,3,NULL,NULL); return(key==NULL);} ], [ AC_DEFINE(HAVE_SSL) found_crypto=1 break; ], [] ) done if test -z "$found_crypto" ; then AC_MSG_ERROR([Could not find working SSLeay / OpenSSL libraries, please install]) fi if test -z "$ssldir" ; then ssldir="(system)" else CFLAGS="$CFLAGS -I$ssldir/include" LDFLAGS="$LDFLAGS -L$ssldir/lib" if test "x$need_dash_r" = "x1" ; then LDFLAGS="$LDFLAGS -R$ssldir" fi fi LIBS="$saved_LIBS -lcrypto" AC_MSG_RESULT($ssldir) # Checks for data types AC_CHECK_SIZEOF(char, 1) AC_CHECK_SIZEOF(short int, 2) AC_CHECK_SIZEOF(int, 4) AC_CHECK_SIZEOF(long int, 4) AC_CHECK_SIZEOF(long long int, 8) # More checks for data types AC_MSG_CHECKING([for intXX_t types]) AC_TRY_COMPILE( [#include ], [int16_t a; int32_t b; a = 1235; b = 1235;], [ AC_DEFINE(HAVE_INTXX_T) AC_MSG_RESULT(yes) have_intxx_t=1 ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([for u_intXX_t types]) AC_TRY_COMPILE( [#include ], [u_int16_t c; u_int32_t d; c = 1235; d = 1235;], [ AC_DEFINE(HAVE_U_INTXX_T) AC_MSG_RESULT(yes) have_u_intxx_t=1 ], [AC_MSG_RESULT(no)] ) if test -z "$have_u_intxx_t" -o -z "$have_intxx_t" -a \ "x$ac_cv_header_sys_bitypes_h" = "xyes" then AC_MSG_CHECKING([for intXX_t and u_intXX_t types in sys/bitypes.h]) AC_TRY_COMPILE( [#include ], [ u_int16_t c; u_int32_t d; int16_t e; int32_t f; c = 1235; d = 1235; e = 1235; f = 1235; ], [ AC_DEFINE(HAVE_U_INTXX_T) AC_DEFINE(HAVE_INTXX_T) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) fi AC_MSG_CHECKING([for uintXX_t types]) AC_TRY_COMPILE( [#include ], [uint16_t c; uint32_t d; c = 1235; d = 1235;], [ AC_DEFINE(HAVE_UINTXX_T) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([for socklen_t]) AC_TRY_COMPILE( [ #include #include ], [socklen_t foo; foo = 1235;], [ AC_DEFINE(HAVE_SOCKLEN_T) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([for size_t]) AC_TRY_COMPILE( [#include ], [size_t foo; foo = 1235;], [ AC_DEFINE(HAVE_SIZE_T) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([for struct sockaddr_storage]) AC_TRY_COMPILE( [ #include #include ], [struct sockaddr_storage s;], [ AC_DEFINE(HAVE_STRUCT_SOCKADDR_STORAGE) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([for struct sockaddr_in6]) AC_TRY_COMPILE( [#include ], [struct sockaddr_in6 s; s.sin6_family = 0;], [ AC_DEFINE(HAVE_STRUCT_SOCKADDR_IN6) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([for struct in6_addr]) AC_TRY_COMPILE( [#include ], [struct in6_addr s; s.s6_addr[0] = 0;], [ AC_DEFINE(HAVE_STRUCT_IN6_ADDR) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([for struct addrinfo]) AC_TRY_COMPILE( [ #include #include #include ], [struct addrinfo s; s.ai_flags = AI_PASSIVE;], [ AC_DEFINE(HAVE_STRUCT_ADDRINFO) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) # Checks for structure members AC_MSG_CHECKING([whether utmp.h has ut_host field]) AC_EGREP_HEADER(ut_host, utmp.h, [AC_DEFINE(HAVE_HOST_IN_UTMP) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmpx.h has ut_host field]) AC_EGREP_HEADER(ut_host, utmpx.h, [AC_DEFINE(HAVE_HOST_IN_UTMPX) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmpx.h has syslen field]) AC_EGREP_HEADER(syslen, utmpx.h, [AC_DEFINE(HAVE_SYSLEN_IN_UTMPX) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmp.h has ut_pid field]) AC_EGREP_HEADER(ut_pid, utmp.h, [AC_DEFINE(HAVE_PID_IN_UTMP) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmp.h has ut_type field]) AC_EGREP_HEADER(ut_type, utmp.h, [AC_DEFINE(HAVE_TYPE_IN_UTMP) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmp.h has ut_tv field]) AC_EGREP_HEADER(ut_tv, utmp.h, [AC_DEFINE(HAVE_TV_IN_UTMP) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmp.h has ut_id field]) AC_EGREP_HEADER(ut_id, utmp.h, [AC_DEFINE(HAVE_ID_IN_UTMP) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmp.h has ut_addr field]) AC_EGREP_HEADER(ut_addr, utmp.h, [AC_DEFINE(HAVE_ADDR_IN_UTMP) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmpx.h has ut_addr field]) AC_EGREP_HEADER(ut_addr, utmpx.h, [AC_DEFINE(HAVE_ADDR_IN_UTMPX) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmp.h has ut_addr_v6 field]) AC_EGREP_HEADER(ut_addr_v6, utmp.h, [AC_DEFINE(HAVE_ADDR_V6_IN_UTMP) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether utmpx.h has ut_addr_v6 field]) AC_EGREP_HEADER(ut_addr_v6, utmpx.h, [AC_DEFINE(HAVE_ADDR_V6_IN_UTMPX) AC_MSG_RESULT(yes); ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether struct sockaddr_storage has ss_family field]) AC_TRY_COMPILE( [ #include #include ], [struct sockaddr_storage s; s.ss_family = 1;], [ AC_DEFINE(HAVE_SS_FAMILY_IN_SS) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether struct sockaddr_storage has __ss_family field]) AC_TRY_COMPILE( [ #include #include ], [struct sockaddr_storage s; s.__ss_family = 1;], [ AC_DEFINE(HAVE___SS_FAMILY_IN_SS) AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no)] ) AC_MSG_CHECKING([whether libc defines __progname]) AC_TRY_LINK([], [extern char *__progname; printf("%s", __progname);], [ AC_DEFINE(HAVE___PROGNAME) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) ] ) # Looking for programs, paths and files AC_ARG_WITH(rsh, [ --with-rsh=PATH Specify path to remote shell program ], [ if test "x$withval" != "$xno" ; then AC_DEFINE_UNQUOTED(RSH_PATH, "$withval") fi ], [ AC_PATH_PROG(rsh_path, rsh) ] ) AC_ARG_WITH(xauth, [ --with-xauth=PATH Specify path to xauth program ], [ if test "x$withval" != "$xno" ; then AC_DEFINE_UNQUOTED(XAUTH_PATH, "$withval") fi ], [ AC_PATH_PROG(xauth_path, xauth) if test ! -z "$xauth_path" -a -x "/usr/openwin/bin/xauth" ; then xauth_path="/usr/openwin/bin/xauth" fi ] ) if test ! -z "$xauth_path" ; then AC_DEFINE_UNQUOTED(XAUTH_PATH, "$xauth_path") fi if test ! -z "$rsh_path" ; then AC_DEFINE_UNQUOTED(RSH_PATH, "$rsh_path") fi # Check for mail directory (last resort if we cannot get it from headers) if test ! -z "$MAIL" ; then maildir=`dirname $MAIL` AC_DEFINE_UNQUOTED(MAIL_DIRECTORY, "$maildir") fi # Look for lastlog location AC_ARG_WITH(lastlog, [ --with-lastlog=FILE Location of lastlog file], [ if test "x$withval" = "xno" ; then AC_DEFINE(DISABLE_LASTLOG) else AC_DEFINE_UNQUOTED(LASTLOG_LOCATION, "$withval") fi ], [ AC_MSG_CHECKING([location of lastlog file]) for lastlog in /var/log/lastlog /var/adm/lastlog /usr/adm/lastlog /etc/security/lastlog ; do if test -f $lastlog ; then gotlastlog="file" break fi if test -d $lastlog ; then gotlastlog="dir" break fi done if test -z "$gotlastlog" ; then AC_MSG_RESULT(not found) nolastlog=1 else if test "x$gotlastlog" = "xdir" ; then AC_MSG_RESULT(${lastlog}/) AC_DEFINE(LASTLOG_IS_DIR) else AC_MSG_RESULT($lastlog) AC_DEFINE_UNQUOTED(LASTLOG_LOCATION, "$lastlog") fi fi ] ) if test ! -z "$nolastlog" ; then AC_MSG_WARN([*** Disabling lastlog support *** ]) AC_DEFINE(DISABLE_LASTLOG) fi if test -z "$no_dev_ptmx" ; then AC_CHECK_FILE("/dev/ptmx", [ AC_DEFINE_UNQUOTED(HAVE_DEV_PTMX) have_dev_ptmx=1 ] ) fi AC_CHECK_FILE("/dev/ptc", [ AC_DEFINE_UNQUOTED(HAVE_DEV_PTS_AND_PTC) have_dev_ptc=1 ] ) # Some systems (defined in platform-specific code above) automagically remove # Unix98 ptys when they are closed if test "x$ac_cv_func_openpty" = "xyes" -o "x$have_dev_ptmx" = "x1" -o "x$have_dev_ptc" = "x1" ; then if test "x$need_pty_removed_on_close" = "x1" ; then AC_DEFINE(PTY_REMOVED_ON_CLOSE) fi fi # Options from here on. Some of these are preset by platform above # Check whether user wants GNOME ssh-askpass AC_MSG_CHECKING([whether to build GNOME ssh-askpass]) AC_ARG_WITH(gnome-askpass, [ --with-gnome-askpass Build the GNOME passphrase requester (default=no)], [ if test x$withval = xno ; then GNOME_ASKPASS=""; else GNOME_ASKPASS="gnome-ssh-askpass"; fi ]) AC_SUBST(GNOME_ASKPASS) if test -z "$GNOME_ASKPASS" ; then AC_MSG_RESULT(no) else AC_MSG_RESULT(yes) fi # Check for user-specified random device, otherwise check /dev/urandom AC_ARG_WITH(random, [ --with-random=FILE read randomness from FILE (default=/dev/urandom)], [ RANDOM_POOL="$withval"; AC_DEFINE_UNQUOTED(RANDOM_POOL, "$RANDOM_POOL") ], [ # Check for random device AC_CHECK_FILE("/dev/urandom", [ RANDOM_POOL="/dev/urandom"; AC_SUBST(RANDOM_POOL) AC_DEFINE_UNQUOTED(RANDOM_POOL, "$RANDOM_POOL") ] ) ] ) # Check for EGD pool file AC_ARG_WITH(egd-pool, [ --with-egd-pool=FILE read randomness from EGD pool FILE (default none)], [ RANDOM_POOL="$withval"; AC_DEFINE(HAVE_EGD) AC_SUBST(RANDOM_POOL) AC_DEFINE_UNQUOTED(RANDOM_POOL, "$RANDOM_POOL") ] ) # Make sure we have some random number support if test -z "$RANDOM_POOL" -a -z "$EGD_POOL"; then AC_MSG_ERROR([No random device found, and no EGD random pool specified]) fi AC_ARG_WITH(catman, [ --with-catman=man|cat Install preformatted manpages[no]], [ MANTYPE='$(CATMAN)' if test x"$withval" != x"yes" ; then mansubdir=$withval else mansubdir=cat fi ], [ if test -z "$MANTYPE" ; then MANTYPE='$(TROFFMAN)' mansubdir=man fi ] ) AC_SUBST(MANTYPE) AC_SUBST(mansubdir) # Check whether user wants Kerberos support AC_ARG_WITH(kerberos4, [ --with-kerberos4=PATH Enable Kerberos 4 support], [ if test "x$withval" != "$xno" ; then if test "x$withval" != "$xyes" ; then CFLAGS="$CFLAGS -I${withval}/include" LDFLAGS="$LDFLAGS -L${withval}/lib" else if test -d /usr/include/kerberosIV ; then CFLAGS="$CFLAGS -I/usr/include/kerberosIV" fi fi AC_CHECK_HEADERS(krb.h) AC_CHECK_LIB(krb, main) if test "$ac_cv_header_krb_h" != yes; then AC_MSG_WARN([Cannot find krb.h, build may fail]) fi if test "$ac_cv_lib_krb_main" != yes; then AC_MSG_WARN([Cannot find libkrb, build may fail]) fi KLIBS="-lkrb -ldes" AC_CHECK_LIB(resolv, dn_expand, , ) KRB4=yes AC_DEFINE(KRB4) fi ] ) # Check whether user wants AFS support AC_ARG_WITH(afs, [ --with-afs=PATH Enable AFS support], [ if test "x$withval" != "$xno" ; then if test "x$withval" != "$xyes" ; then CFLAGS="$CFLAGS -I${withval}/include" LFLAGS="$LFLAGS -L${withval}/lib" fi if test -z "$KRB4" ; then AC_MSG_WARN([AFS requires Kerberos IV support, build may fail]) fi LIBS="$LIBS -lkafs" if test ! -z "$AFS_LIBS" ; then LIBS="$LIBS $AFS_LIBS" fi AC_DEFINE(AFS) fi ] ) LIBS="$LIBS $KLIBS" # Check whether user wants S/Key support AC_ARG_WITH(skey, [ --with-skey Enable S/Key support], [ if test "x$withval" != "$xno" ; then AC_DEFINE(SKEY) LIBS="$LIBS -lskey" fi ] ) # Check whether user wants TCP wrappers support AC_ARG_WITH(tcp-wrappers, [ --with-tcp-wrappers Enable tcpwrappers support], [ if test "x$withval" != "$xno" ; then saved_LIBS="$LIBS" LIBS="$LIBS -lwrap" AC_MSG_CHECKING(for libwrap) AC_TRY_LINK( [ #include int deny_severity = 0, allow_severity = 0; ], [hosts_access(0);], [ AC_MSG_RESULT(yes) AC_DEFINE(LIBWRAP) ], [ AC_MSG_RESULT(no) AC_MSG_WARN([*** libwrap missing - tcpwrapper support disabled ***]) LIBS="$saved_LIBS" ] ) fi ] ) # Check whether to enable MD5 passwords AC_ARG_WITH(md5-passwords, [ --with-md5-passwords Enable use of MD5 passwords], [ if test "x$withval" != "$xno" ; then AC_DEFINE(HAVE_MD5_PASSWORDS) fi ] ) # Check whether to enable utmpx support AC_ARG_WITH(utmpx, [ --with-utmpx Enable utmpx support], [ if test "x$withval" != "xno" ; then AC_DEFINE(USE_UTMPX) fi ] ) # Whether to disable shadow password support AC_ARG_WITH(shadow, [ --without-shadow Disable shadow password support], [ if test "x$withval" = "xno" ; then AC_DEFINE(DISABLE_SHADOW) fi ] ) # Use ip address instead of hostname in $DISPLAY AC_ARG_WITH(ipaddr-display, [ --with-ipaddr-display Use ip address instead of hostname in \$DISPLAY], [ if test "x$withval" = "xno" ; then AC_DEFINE(IPADDR_IN_DISPLAY) fi ] ) # Whether to mess with the default path AC_ARG_WITH(default-path, [ --with-default-path=PATH Specify default \$PATH environment for server], [ if test "x$withval" != "xno" ; then AC_DEFINE_UNQUOTED(USER_PATH, "$withval") fi ] ) # Whether to force IPv4 by default (needed on broken glibc Linux) AC_ARG_WITH(ipv4-default, [ --with-ipv4-default Use IPv4 by connections unless '-6' specified], [ if test "x$withval" != "xno" ; then AC_DEFINE(IPV4_DEFAULT) fi ] ) # Where to place sshd.pid piddir=/var/run AC_ARG_WITH(pid-dir, [ --with-pid-dir=PATH Specify location of ssh.pid file], [ if test "x$withval" != "xno" ; then piddir=$withval fi ] ) AC_DEFINE_UNQUOTED(PIDDIR, "$piddir") AC_SUBST(piddir) AC_OUTPUT(Makefile)