dnl Process this file with autoconf to produce a configure script.
AC_INIT(webalizer.c)

dnl default language (don't change!)
DEFAULT_LANG="english"
AC_SUBST(DEFAULT_LANG)
OPTS=${DEFS}
AC_SUBST(OPTS)

dnl Checks for programs.
IN_CFLAGS=${CFLAGS}
AC_PROG_CC
AC_PROG_LN_S
AC_PROG_INSTALL
AC_C_CHAR_UNSIGNED

dnl force our own CFLAGS defaults
if test "$GCC" = "yes"; then

  AC_ARG_ENABLE(static,--enable-static           Build as static executable,
  LDFLAGS="--static ${LDFLAGS}")

  if test "$IN_CFLAGS" = ""; then
     CFLAGS="-Wall -O2"
  fi
  if test "$ac_cv_c_char_unsigned" = "yes"; then
     CFLAGS="-fsigned-char ${CFLAGS}"
  fi

  AC_ARG_ENABLE(debug,--enable-debug            Compile with debugging code,
  CFLAGS="-g ${CFLAGS}")

else
  if test "$IN_CFLAGS" = ""; then
     CFLAGS="-g"
  fi
fi

dnl Check for command line arguments
AC_ARG_WITH(etcdir,--with-etcdir=DIR         Where to look for default config file [[/etc]],
ETCDIR="${withval}",CACHE_ETC="yes")

AC_ARG_WITH(gdlib,--with-gdlib=DIR          Where to additionally look for libgd.a,
EXTRA_GDLIB="${withval}", EXTRA_GDLIB="")
AC_ARG_WITH(gd,--with-gd=DIR             Where to additionally look for gd headers,
EXTRA_GD="${withval}"; CFLAGS="-I${withval} ${CFLAGS}", EXTRA_GD="")

AC_ARG_WITH(z-inc,--with-z-inc=DIR          Alternate location for libz headers,
CFLAGS="-I${withval} ${CFLAGS}")

AC_ARG_WITH(zlib,--with-zlib=DIR           Alternate location for libz library,
LDFLAGS="-L${withval} ${LDFLAGS}")

AC_ARG_WITH(png-inc,--with-png-inc=DIR        Alternate location of png header files, CFLAGS="-I${withval} ${CFLAGS}")

AC_ARG_WITH(png,--with-png=DIR            Alternate location for libpng library,
LDFLAGS="-L${withval} ${LDFLAGS}")

AC_ARG_WITH(db,--with-db=DIR             Alternate location for db headers,
CFLAGS="-I${withval} ${CFLAGS}")

AC_ARG_WITH(dblib,--with-dblib=DIR          Alternate location for db library,
LDFLAGS="-L${withval} ${LDFLAGS}"; HAVE_DB="yes", HAVE_DB="")

dnl enable-dns forces use of DNS code
AC_ARG_ENABLE(dns,--enable-dns              Enable DNS lookup code,
USE_DNS="yes")

dnl DNS library check
if test "$USE_DNS" = "yes"; then
  if test "$HAVE_DB" = ""; then
    AC_CHECK_FUNCS(dbopen)
    if test $ac_cv_func_dbopen = no; then
      AC_SEARCH_LIBS(dbopen, db db1, OPTS="-DUSE_DNS ${OPTS}"; HAVE_DB="yes")
      if test "$HAVE_DB" = ""; then
        AC_MSG_WARN(You must have a V1.85 compatable DB library!)
        AC_MSG_WARN(DNS lookup code will be disabled...)
      fi
    else
      OPTS="-DUSE_DNS ${OPTS}"; HAVE_DB="yes"
    fi
  else
    OPTS="-DUSE_DNS ${OPTS}"; LIBS="-ldb ${LIBS}"; HAVE_DB="yes"
  fi
  if test "$HAVE_DB" = "yes"; then
    dnl on my RH6 system, db.h is db_185.h ?!?
    AC_CHECK_HEADERS(db_185.h)
    AC_CHECK_HEADERS(errno.h)
  fi
  dnl Some systems need these at link time (not Linux)
  AC_CHECK_FUNCS(socket)
  if test $ac_cv_func_socket = no; then
    AC_CHECK_LIB(socket, main, LIBS="-lsocket ${LIBS}";)
  fi
  AC_CHECK_HEADERS(sys/socket.h)
  AC_CHECK_LIB(nsl, main, LIBS="-lnsl ${LIBS}")
fi

dnl Check for bsd 4.4 library -l44bsd:
AC_CHECK_LIB(44bsd, main, LIBS="-l44bsd ${LIBS}")

dnl Check for math library -lm
AC_CHECK_LIB(m, main, HAVE_LIBM="1"; LIBS="-lm ${LIBS}")

dnl Check for z library -lz
AC_CHECK_LIB(z, main,LIBZ="yes",LIBZ="no")
if test "$LIBZ" = "no"; then
  AC_MSG_ERROR(z library not found... please install zlib.)
else
 AC_CHECK_LIB(z, gzrewind,LIBS="-lz ${LIBS}",LIBZ="no")
  if test "$LIBZ" = "no"; then
   AC_MSG_ERROR(Old version of zlib found, please upgrade!)
  fi
fi

dnl Check for png library -lpng
AC_CHECK_LIB(png, main, LIBS="-lpng ${LIBS}", LIBPNG="no")
 if test "$LIBPNG" = "no"; then
  AC_MSG_ERROR(png library not found... please install png.)
 fi

dnl check for gd graphics library -lgd
if test "$EXTRA_GD" = ""; then
  if test "$EXTRA_GDLIB" = ""; then
   AC_CHECK_LIB(gd, gdImagePng,LIBS="-lgd ${LIBS}"; HAVE_LIBGD="yes", HAVE_LIBGD="")
  fi
fi

if test "$HAVE_LIBGD" = ""; then
 AC_FIND_PATH(GDLOC,libgd.a,"", ${PREFIX}/lib ${PREFIX}/lib/gd /usr/local/lib /usr/local/lib/gd /usr/local/gd /usr/local/include /usr/local/include/gd /usr/lib/gd /usr/lib /lib ./ ./gd ../gd ${EXTRA_GDLIB} ${EXTRA_GD})
 if test "$GDLOC" = ""; then
   AC_FIND_PATH(GDLOC,libgd.so,"", ${PREFIX}/lib ${PREFIX}/lib/gd /usr/local/lib /usr/local/lib/gd /usr/local/gd /usr/local/include /usr/local/include/gd /usr/lib/gd /usr/lib /lib ./ ./gd ../gd ${EXTRA_GDLIB} ${EXTRA_GD})
 fi
 if test "$GDLOC" = ""; then
  AC_MSG_ERROR(gd library not found... please install gd.)
 else
  LIBS="-lgd ${LIBS}"
  LDFLAGS="-L${GDLOC} ${LDFLAGS}"
 fi
fi

dnl find path to GD library headers
AC_FIND_PATH(GDLIB,gd.h,"", ${PREFIX}/include ${PREFIX}/include/gd /usr/local/include/gd /usr/local/include /usr/include/gd /usr/include /include/gd /include ./ ./gd ../gd ${EXTRA_GD} ${EXTRA_GDLIB})
dnl Abort if GD headers not found
if test "$GDLIB" = ""; then
 AC_MSG_ERROR(gd headers not found... please install gd.)
fi

dnl additonal platform specific checks
AC_CHECK_HEADERS(getopt.h)
if test "$HAVE_LIBM" = "1"; then
 AC_CHECK_HEADERS(math.h)
fi

AC_MSG_CHECKING(default config dir)
if test "$CACHE_ETC" = "yes"; then
 AC_CACHE_VAL(ac_cv_etcdir, ac_cv_etcdir=/etc)
 ETCDIR=$ac_cv_etcdir
fi
ac_cv_etcdir=$ETCDIR
AC_MSG_RESULT($ETCDIR)
AC_SUBST(ETCDIR)

LANG_CACHE=yes
AC_ARG_WITH(language,--with-language=language  Use 'language' (default is english), 
WEBALIZER_LANG="${withval}"; LANG_CACHE=no, LANG_CACHE=yes)
if test "$WEBALIZER_LANG" = "no"; then WEBALIZER_LANG=english; fi
dnl
dnl check for valid language file
dnl
AC_MSG_CHECKING(for language file)
if test "$LANG_CACHE" = "yes"; then
AC_CACHE_VAL(ac_cv_language, ac_cv_language=$DEFAULT_LANG)
WEBALIZER_LANG=$ac_cv_language
fi
if test -f lang/webalizer_lang.${WEBALIZER_LANG}; then
AC_MSG_RESULT(yes - ${WEBALIZER_LANG})
else
 if test -f lang/webalizer_lang.${DEFAULT_LANG}; then
  AC_MSG_RESULT('${WEBALIZER_LANG}' not found - using ${DEFAULT_LANG})
  WEBALIZER_LANG=${DEFAULT_LANG}
 else
  AC_MSG_RESULT(no)
  AC_MSG_ERROR(language files not found... fix before continuing)
 fi
fi
ac_cv_language=${WEBALIZER_LANG}

dnl create link to language file
AC_LINK_FILES(lang/webalizer_lang.${WEBALIZER_LANG}, webalizer_lang.h)

dnl the stuff below was automatically generated by autoscan...
dnl since we don't (yet) have conditionals in our code to handle these
dnl situations, we just ignore them for now...

dnl Checks for header files.
dnl AC_HEADER_STDC
dnl AC_CHECK_HEADERS(unistd.h)
dnl Checks for typedefs, structures, and compiler characteristics.
dnl AC_STRUCT_TM
dnl Checks for library functions.
dnl AC_FUNC_STRFTIME
dnl AC_CHECK_FUNCS(strstr strtoul uname)

AC_OUTPUT(Makefile)