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tftp-hpa-google/configure.in
H. Peter Anvin 2864d83fea tftpd: try to handle duplicate WRQ packets 
Duplicate WRQ packets can really hurt, since they end up accessing the
same file.  This attempts to lock the file, which should work for the
case where a correctly implemented TFTP stack uses the same session ID
(port number) for each retry; in any other case they look like
multiple sessions to the same file and it is a crapshoot if we end up
with the correct one.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2011-05-12 19:16:17 -07:00

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dnl
dnl autoconf input file to generate MCONFIG
dnl
AC_PREREQ(2.61)
AC_INIT(MCONFIG.in)
AC_PREFIX_DEFAULT(/usr)
AC_USE_SYSTEM_EXTENSIONS
AC_ISC_POSIX
AC_PROG_CC
AC_C_CONST
AC_C_INLINE
PA_ADD_CFLAGS(-W)
PA_ADD_CFLAGS(-Wall)
PA_ADD_CFLAGS(-Wpointer-arith)
PA_ADD_CFLAGS(-Wbad-function-cast)
PA_ADD_CFLAGS(-Wcast-equal)
PA_ADD_CFLAGS(-Wstrict-prototypes)
PA_ADD_CFLAGS(-Wmissing-prototypes)
PA_ADD_CFLAGS(-Wmissing-declarations)
PA_ADD_CFLAGS(-Wnested-externs)
PA_ADD_CFLAGS(-Winline)
PA_ADD_CFLAGS(-Wwrite-strings)
PA_ADD_CFLAGS(-Wundef)
PA_ADD_CFLAGS(-Wshadow)
PA_ADD_CFLAGS(-Wsign-compare)
PA_ADD_CFLAGS(-pipe)
PA_ADD_CFLAGS(-fno-strict-aliasing)
AC_HEADER_STDC
AC_CHECK_HEADERS(inttypes.h)
AC_CHECK_HEADERS(stdint.h)
PA_CHECK_INTTYPES_H_SANE
AC_CHECK_HEADERS(fcntl.h)
AC_CHECK_HEADERS(grp.h)
AC_CHECK_HEADERS(libgen.h)
AC_CHECK_HEADERS(memory.h)
AC_CHECK_HEADERS(setjmp.h)
AC_CHECK_HEADERS(stddef.h)
AC_CHECK_HEADERS(stdlib.h)
AC_CHECK_HEADERS(string.h)
AC_CHECK_HEADERS(strings.h)
AC_CHECK_HEADERS(sysexits.h)
AC_CHECK_HEADERS(time.h)
AC_CHECK_HEADERS(unistd.h)
AC_CHECK_HEADERS(sys/file.h)
AC_CHECK_HEADERS(sys/filio.h)
AC_CHECK_HEADERS(sys/stat.h)
AC_CHECK_HEADERS(sys/time.h)
AC_CHECK_HEADERS(sys/types.h)
AC_CHECK_HEADERS(arpa/inet.h)
AC_CHECK_HEADERS(netdb.h)
AC_HEADER_TIME
dnl This is needed on some versions of FreeBSD...
AC_CHECK_HEADERS(machine/param.h)
AC_CHECK_HEADERS(sys/socket.h)
AC_CHECK_HEADERS(winsock2.h)
AC_CHECK_HEADERS(winsock.h)
AC_SYS_LARGEFILE
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_MODE_T
AC_TYPE_SIZE_T
AC_CHECK_TYPES(intmax_t)
AC_CHECK_TYPES(long long)
AC_CHECK_TYPES(uint16_t)
AC_CHECK_TYPES(uint32_t)
AC_CHECK_TYPES(u_short)
AC_CHECK_TYPES(u_long)
dnl
dnl <sys/socket.h> isn't among the list of standard headers that autoconf checks,
dnl but POSIX requires <sys/socket.h> for socklen_t to be defined.
dnl
AC_CHECK_TYPES(socklen_t,,,
[
#include <stdio.h>
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#if HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#if STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# if HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif
#if HAVE_STRING_H
# if !STDC_HEADERS && HAVE_MEMORY_H
# include <memory.h>
# endif
# include <string.h>
#endif
#if HAVE_STRINGS_H
# include <strings.h>
#endif
#if HAVE_INTTYPES_H
# include <inttypes.h>
#else
# if HAVE_STDINT_H
# include <stdint.h>
# endif
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
])
AC_SEARCH_LIBS(socket, [socket ws2_32 wsock32], , [AC_MSG_ERROR(socket library not found)])
AC_CHECK_FUNCS(fcntl)
AC_CHECK_FUNCS(setsid)
AC_CHECK_FUNCS(recvmsg)
AC_CHECK_FUNCS(ftruncate)
AC_CHECK_FUNCS(setreuid)
AC_CHECK_FUNCS(setregid)
AC_CHECK_FUNCS(initgroups)
AC_CHECK_FUNCS(setgroups)
dnl Solaris 8 has [u]intmax_t but not strtoumax(). How utterly braindamaged.
AC_CHECK_FUNCS(strtoumax)
AC_CHECK_FUNCS(strtoull)
PA_MSGHDR_MSG_CONTROL
PA_STRUCT_IN_PKTINFO
PA_STRUCT_ADDRINFO
PA_HEADER_DEFINES(fcntl.h, int, O_NONBLOCK)
PA_HEADER_DEFINES(fcntl.h, int, O_BINARY)
PA_HEADER_DEFINES(fcntl.h, int, O_TEXT)
PA_HEADER_DEFINES(fcntl.h, int, F_SETLK)
PA_HEADER_DEFINES(sys/file.h, int, LOCK_SH)
PA_HEADER_DEFINES(sys/file.h, int, LOCK_EX)
AH_TEMPLATE([HAVE_SIGSETJMP],
[Define if we have sigsetjmp, siglongjmp and sigjmp_buf.])
PA_SIGSETJMP([AC_DEFINE(HAVE_SIGSETJMP)])
dnl
dnl Get common paths
dnl
SRCROOT=`cd $srcdir && pwd`
OBJROOT=`pwd`
XTRA=false
PA_SEARCH_LIBS_AND_ADD(xmalloc, iberty)
PA_SEARCH_LIBS_AND_ADD(xstrdup, iberty)
PA_SEARCH_LIBS_AND_ADD(bsd_signal, bsd, bsdsignal)
PA_SEARCH_LIBS_AND_ADD(getopt_long, getopt, getopt_long)
PA_SEARCH_LIBS_AND_ADD(getaddrinfo, [nsl resolv])
if $pa_add_getaddrinfo
then
AC_SEARCH_LIBS(gethostbyname, [nsl resolv],
[AC_SEARCH_LIBS(herror, [nsl resolv], ,
[AC_MSG_ERROR(herror not found)])],
[AC_MSG_ERROR(gethostbyname not found)])
else
AC_SEARCH_LIBS(freeaddrinfo, [nsl resolv], ,
[AC_MSG_ERROR(getaddrinfo but not freeaddrinfo found)])
AC_SEARCH_LIBS(gai_strerror, [nsl resolv], ,
[AC_MSG_ERROR(getaddrinfo but not gai_strerror found)])
fi
PA_SEARCH_LIBS_AND_ADD(inet_ntop, [nsl resolv])
if $pa_add_inet_ntop
then
AC_SEARCH_LIBS(inet_ntoa, [nsl resolv], ,
[AC_MSG_ERROR(inet_ntoa not found)])
fi
AC_SEARCH_LIBS(inet_aton, [nsl resolv], ,[AC_MSG_ERROR(inet_aton not found)])
AC_CHECK_FUNCS(daemon, , [XTRA=true; AC_LIBOBJ(daemon)])
AC_CHECK_FUNCS(dup2, , [XTRA=true; AC_LIBOBJ(dup2)])
if $XTRA
then
XTRALIBS="$OBJROOT/lib/libxtra.a $XTRALIBS"
fi
dnl
dnl These libraries apply to the server only
dnl
common_libs="$LIBS"
PA_HEADER_DEFINES(netinet/in.h, int, IPPORT_TFTP)
PA_WITH_BOOL(tcpwrappers, 1,
[ --without-tcpwrappers disable tcpwrapper permissions checking],
[
AC_SEARCH_LIBS(yp_get_default_domain, [nsl resolv])
PA_HAVE_TCPWRAPPERS
],:)
AH_TEMPLATE([WITH_REGEX],
[Define if we are compiling with regex filename remapping.])
PA_WITH_BOOL(remap, 1,
[ --without-remap disable regex-based filename remapping],
[
AC_CHECK_HEADER(regex.h,
[
AC_SEARCH_LIBS(regcomp, [regex rx],
[
AC_DEFINE(WITH_REGEX)
TFTPDOBJS="remap.${OBJEXT} $TFTPDOBJS"
])
])
],:)
TFTPD_LIBS="$LIBS $XTRALIBS"
LIBS="$common_libs"
dnl
dnl These libraries apply to the client only
dnl
AH_TEMPLATE([WITH_READLINE],
[Define if we are compiling with readline/editline command-line editing.])
PA_WITH_BOOL(readline, 1,
[ --without-readline disable the use of readline command-line editing],
[
AC_CHECK_HEADER(readline/readline.h,
[
dnl readline may need libtermcap or somesuch...
AC_SEARCH_LIBS(tputs, [termcap terminfo])
AC_SEARCH_LIBS(readline, [readline history],
[AC_DEFINE(WITH_READLINE)])
AC_CHECK_HEADERS(readline/history.h)
],
[AC_CHECK_HEADER(editline/readline.h,
[
dnl editline may need libtermcap or somesuch...
AC_SEARCH_LIBS(tputs, [termcap terminfo])
AC_SEARCH_LIBS(editline, [edit],
[AC_DEFINE(WITH_READLINE)])
])])
],:)
TFTP_LIBS="$LIBS $XTRALIBS"
LIBS="$common_libs"
dnl
dnl Check for IPV6 and disable-ipv6
dnl
PA_STRUCT_SOCKADDR_IN6
AC_MSG_CHECKING([for IPv6 support])
PA_WITH_BOOL(ipv6, 1,
[ --without-ipv6 disable the support for IPv6],
[
if $HAVE_INET6
then
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_IPV6, 1, [Define if IPv6 support is enabled.])
PA_STRUCT_IN6_PKTINFO
else
AC_MSG_RESULT(no)
AC_MSG_WARN([*** we do not have required IPv6 structs - IPv6 will be disabled])
fi
],
[AC_MSG_RESULT(disabled)])
AC_SUBST(SRCROOT)
AC_SUBST(OBJROOT)
AC_SUBST(TFTP_LIBS)
AC_SUBST(TFTPD_LIBS)
AC_SUBST(TFTPDOBJS)
AC_PROG_LN_S
AC_PROG_RANLIB
dnl
dnl Make sure the install program has an absolute path if it
dnl has a path at all. autoconf doesn't do this "in order
dnl to not pollute the cache." Sigh.
dnl Note: the $ needs to be double-quoted for reasons unknown.
dnl
AC_PROG_INSTALL
[if echo "$INSTALL" | grep '^[^/].*/' > /dev/null 2>&1; then
INSTALL='\${SRCROOT}'/"$INSTALL"
fi]
AC_CONFIG_HEADERS(aconfig.h)
AC_OUTPUT(MCONFIG)
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