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dnl $Id: configure.in,v 1.8 2001-06-02 02:12:47 rjkaes Exp $

AC_INIT()
AM_INIT_AUTOMAKE(tinyproxy,1.4.0pre4)
AM_CONFIG_HEADER(config.h)

AC_CANONICAL_HOST
AC_CANONICAL_TARGET

dnl Checks for programs.
AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_INSTALL
AM_PROG_LEX
AC_PROG_YACC
AM_C_PROTOTYPES

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(sys/types.h sys/socket.h sys/time.h time.h netinet/in.h arpa/inet.h error.h fcntl.h netdb.h signal.h stdio.h stdint.h stdlib.h string.h sys/stat.h sys/uio.h unistd.h sys/wait.h sys/un.h sys/select.h strings.h sys/ioctl.h pthread.h sys/sysctl.h syslog.h stdint.h sys/resource.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_HEADER_TIME
AC_UNP_CHECK_TYPE(uint8_t, unsigned char)
AC_UNP_CHECK_TYPE(int16_t, short)
AC_UNP_CHECK_TYPE(uint16_t, unsigned short)
AC_UNP_CHECK_TYPE(int32_t, int)
AC_UNP_CHECK_TYPE(uint32_t, unsigned int)
AC_UNP_CHECK_TYPE(size_t, unsigned int)
AC_UNP_CHECK_TYPE(ssize_t, int)
AC_UNP_CHECK_TYPE(socklen_t, unsigned int)
AC_UNP_CHECK_TYPE(in_addr_t, uint32_t)

dnl Checks for libraries
AC_CHECK_LIB(pthread, pthread_create)
if test $ac_cv_lib_pthread_pthread_create = yes ; then
    CFLAGS="$CFLAGS -D_REENTRANT"
else
    AC_CHECK_LIB(pthreads, pthread_create)
    if test $ac_cv_lib_pthreads_pthread_create = yes ; then
        CFLAGS="$CFLAGS -D_REENTRANT"
    else
	AC_MSG_ERROR(You must have a POSIX compliant threading library installed)
    fi
fi

AC_CHECK_LIB(nsl, t_open)
AC_CHECK_LIB(socket, socket)
AC_CHECK_LIB(resolv, gethostbyname)

dnl Checks for library functions.
AC_TYPE_SIGNAL
AC_FUNC_STRFTIME
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(ftruncate select setrlimit socket strdup strerror vsnprintf vsyslog)
AC_CHECK_FUNCS(strlcpy strlcat)

dnl chris - allow user to choose log file location, port and username
AC_ARG_WITH(log-file, [  --with-log-file=FILE    Default logfile name],
            AC_DEFINE_UNQUOTED(DEFAULT_LOG, "$withval"))

AC_ARG_WITH(port, [  --with-port=PORT        Default server port],
            AC_DEFINE_UNQUOTED(DEFAULT_PORT, "$withval"))

AC_ARG_WITH(user, [  --with-user=USER        Default user],
            AC_DEFINE_UNQUOTED(DEFAULT_USER, "$withval"))

AC_ARG_WITH(stathost, [  --with-stathost=HOST    Default status host],
            AC_DEFINE_UNQUOTED(DEFAULT_STATHOST, "$withval"))

dnl Check for the regex library
AC_ARG_WITH(regex, [  --with-regex            Use the GNU regex libary],
            tinyproxy_cv_regex=yes,
            AC_CHECK_FUNCS(regcomp, tinyproxy_cv_regex=no, tinyproxy_cv_regex=yes))

if test $tinyproxy_cv_regex = no ; then
    AC_MSG_CHECKING(whether your system's regexp library is completely broken)
    AC_CACHE_VAL(tinyproxy_cv_regex_broken,
                 AC_TRY_RUN([
# include <unistd.h>
# include <regex.h>
int main(void)
{
	regex_t blah;
	return regcomp(&blah, "foo.*bar", REG_NOSUB) || regexec(&blah, "foobar", 0, NULL, 0);
}
                            ],
                            tinyproxy_cv_regex_broken=no,
                            tinyproxy_cv_regex_broken=yes,
                            tinyproxy_cv_regex_broken=yes))

    AC_MSG_RESULT($tinyproxy_cv_regex_broken)
    if test $tinyproxy_cv_regex_broken = yes ; then
        echo "Using the included GNU regex instead." >&AC_FD_MSG
        tinyproxy_cv_regex=yes
    fi
fi

if test $tinyproxy_cv_regex = yes ; then
    AC_DEFINE(USE_GNU_REGEX)
    LIBOBJS="$LIBOBJS gnuregex.o"
fi

dnl Add compiler-specific optimization flags
AC_ARG_ENABLE(debug,
[  --enable-debug          Disable aggressive optimizations [default=no]],
              debug_enabled=yes)

CFLAGS="$CFLAGS -Wall"
if test x$enable_debug = xyes ; then
    dnl Add the warnings if we have the GCC compiler
    if test x$ac_cv_prog_gcc = xyes ; then
        CFLAGS="$CFLAGS -Wshadow"
        CFLAGS="$CFLAGS -Wcast-qual"
        CFLAGS="$CFLAGS -Wcast-align"
        CFLAGS="$CFLAGS -Wstrict-prototypes"
        CFLAGS="$CFLAGS -Wmissing-prototypes"
        CFLAGS="$CFLAGS -Wmissing-declarations"
        CFLAGS="$CFLAGS -Wpointer-arith"
        CFLAGS="$CFLAGS -Waggregate-return"
        CFLAGS="$CFLAGS -Wnested-externs"
    fi
    CFLAGS="$CFLAGS -DYYDEBUG"
    YFLAGS="-v -d"
else
    dnl No debugging information, include the optimizations
    YFLAGS="-d"
fi

dnl Check for SOCKS support
AC_ARG_ENABLE(socks,
[  --enable-socks          Enable SOCKS support [default=no]],
              socks_enabled=yes)

if test x$socks_enabled = xyes; then
    AC_CHECK_HEADER(socks.h, socks_header=yes, socks_header=no)
    AC_CHECK_LIB(socks, main, socks_library=yes, socks_library=no)
    if test "$socks_header" = yes && test "$socks_library" = yes; then
        CFLAGS="$CFLAGS -I/usr/include/sock.h -DSOCKS"
        LIBS="$LIBS -lsocks"
    else
        AC_MSG_ERROR(could not find the SOCKS library or header)
    fi
fi

dnl Check to see if the XTinyproxy header is to be included
AC_ARG_ENABLE(xtinyproxy,
[  --enable-xtinyproxy     Include X-Tinyproxy header [default=yes]],
              xtinyproxy_enabled=yes)

if test x$xtinyproxy_enabled != xno ; then
    AC_DEFINE(XTINYPROXY_ENABLE)
fi

dnl Include filtering for domain/URLs
AC_ARG_ENABLE(filter,
[  --enable-filter         Enable filtering of domains/URLs [default=yes]],
              filter_enabled=yes)

if test x$filter_enabled != xno ; then
    LIBOBJS="$LIBOBJS filter.o"
    AC_DEFINE(FILTER_ENABLE)
fi

dnl Include support for upstream proxies? (TCP tunneling)
AC_ARG_ENABLE(tunnel,
[  --enable-tunnel         Enable support for TCP tunneling [default=yes]],
              tunnel_enabled=yes)

if test x$tunnel_enabled != xno ; then
    AC_DEFINE(TUNNEL_SUPPORT)
fi

dnl Substitute the variables into the various Makefiles
AC_SUBST(CFLAGS)
AC_SUBST(YFLAGS)
AC_SUBST(CPPFLAGS)
AC_SUBST(LIBS)
AC_SUBST(LIBOBJS)

AC_OUTPUT([
Makefile
src/Makefile
doc/Makefile
])