dnl
dnl  Process this file with autoconf
dnl  to build the configure script
dnl
AC_INIT(src/linkcheck.h)
AM_CONFIG_HEADER(include/config.h)
VERSION=`sed -e 's/^.*"\(.*\)";$/\1/' ${srcdir}/src/version.c`
AM_INIT_AUTOMAKE(linkcheck, $VERSION)

dnl
dnl Define the utils directory
dnl
AC_CONFIG_AUX_DIR(utils)  

dnl
dnl canonicalize the host
dnl
AC_CANONICAL_HOST
AC_CANONICAL_TARGET 
PLATFORM="${host_vendor}-${host_cpu}-${host_os}"
AC_SUBST(PLATFORM)

dnl
dnl Get the compiler
dnl
AC_PROG_CC

dnl Check for perl
AC_PATH_PROG( PERL, perl, false )

dnl Check for sh
AC_PATH_PROG( SH, sh, false )

dnl Check for AIX
AC_AIX

if test -n "$auto_cflags"; then
  if test -n "$GCC"; then
    CFLAGS="$CFLAGS -g -O2 -Wall -Wno-implicit"
  else
    case "$host_os" in
      *hpux*)  CFLAGS="$CFLAGS +O3"                      ;;
      *ultrix* | *osf*) CFLAGS="$CFLAGS -O -Olimit 2000" ;;
      *)       CFLAGS="$CFLAGS -O" ;;
    esac
  fi
fi

AC_PROG_MAKE_SET
AC_PROG_INSTALL

dnl
dnl with debugging
dnl
debugging="no"
AC_ARG_WITH(debugging,dnl
[  --with-debugging        compile with program debugging],
[  debugging="$withval"                                  ])
if test "$debugging" != "no"; then
  AC_MSG_RESULT(checking for debugging level... one)
  AC_DEFINE(DEBUG)
else
  AC_MSG_RESULT(checking for debugging level... zero)
fi 

dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(memory.h)
AC_CHECK_HEADERS(errno.h)
AC_CHECK_HEADERS(netinet/in.h)
AC_CHECK_HEADERS(sys/types.h)
AC_CHECK_HEADERS(sys/socket.h)
AC_CHECK_HEADERS(netdb.h)
AC_CHECK_HEADERS(arpa/nameser.h)
AC_CHECK_HEADERS(resolv.h)
AC_CHECK_HEADERS(signal.h)

dnl
dnl Checks for typedefs, structures, and compiler characteristics.
dnl
AC_C_CONST
AC_TYPE_SIZE_T

dnl
dnl Return type of signal-handlers
dnl
AC_TYPE_SIGNAL

dnl
dnl Checks for library functions.
dnl
AC_CHECK_FUNCS(strchr memcpy strstr strcmp strncmp strncpy strlen)
AC_CHECK_FUNCS(strncasecmp strcasecmp strncmp)
AC_CHECK_FUNCS(socket, [], [
  AC_CHECK_LIB(socket, socket)
])
AC_CHECK_FUNCS(gethostbyname, [], [
  AC_CHECK_LIB(nsl, gethostbyname)
])

dnl
dnl Check for libraries
dnl
AC_CHECK_LIB(socket, socket)

dnl resolve lib?
AC_CHECK_LIB(resolv, res_query, [LINK_LIBS="-lresolv $LIBS"], , -lnsl)

AC_SUBST(LINK_LIBS)

dnl
dnl Write platform to file for support reporting
dnl
AC_OUTPUT_COMMANDS([
	outfile=PLATFORM
	tmpfile=${outfile}
	cat > $tmpfile << _EOF_
$PLATFORM
_EOF_
], [PLATFORM=$PLATFORM])

AC_OUTPUT(Makefile src/Makefile doc/Makefile include/Makefile utils/Makefile)