rewrote the --with-zlib check, based on Albert Chin's input.

        OPENSSL_ENABLED=1)

    fi

    dnl Check for the OpenSSL engine header, it is kind of "separated"

    dnl from the main SSL check

    AC_CHECK_HEADERS(openssl/engine.h)

    dnl If the ENGINE library seems to be around, check for the OpenSSL engine

    dnl header, it is kind of "separated" from the main SSL check

    AC_CHECK_FUNC(ENGINE_init, AC_CHECK_HEADERS(openssl/engine.h))

    AC_SUBST(OPENSSL_ENABLED)

dnl Check for & handle argument to --with-zlib.

OPT_ZLIB="yes"

AC_ARG_WITH(libz,

AC_HELP_STRING([--with-libz=PATH], [where to look for zlib])

AC_HELP_STRING([--without-libz], [disable zlib]),

_cppflags=$CPPFLAGS

_ldflags=$LDFLAGS

OPT_ZLIB="/usr/local"

AC_ARG_WITH(zlib,

  AC_HELP_STRING([--with-zlib=PATH], [search for zlib in PATH])

  AC_HELP_STRING([--without-zlib], [disable use of zlib]),

                 [OPT_ZLIB="$withval"])

if test -n "$OPT_ZLIB"

then

  if test X"$OPT_ZLIB" != Xno

  then

    AC_MSG_CHECKING(for zlib in)

    test X"$OPT_ZLIB" = Xyes && OPT_ZLIB=/usr/local

    LIBS="$LIBS -L$OPT_ZLIB/lib"

case "$OPT_ZLIB" in

  no)

    AC_MSG_WARN([zlib disabled]) ;;

  *)

    dnl check for the lib first without setting any new path, since many

    dnl people have it in the default path

    AC_CHECK_LIB(z, inflateEnd, ,

                   [if test -d "$OPT_ZLIB"; then

                      CPPFLAGS="$CPPFLAGS -I$OPT_ZLIB/include"

    AC_MSG_RESULT([$OPT_ZLIB])

  fi

fi

                      LDFLAGS="$LDFLAGS -L$OPT_ZLIB/lib"

                   fi])

if test X"$OPT_ZLIB" != Xno

then

  AC_CHECK_LIB(z, gzread, [AM_CONDITIONAL(CONTENT_ENCODING, true) 

	  	          AC_DEFINE(HAVE_LIBZ)

			  LIBS="$LIBS -lz"

    AC_CHECK_HEADER(zlib.h,[

      AC_CHECK_LIB(z, gzread,

                   [AM_CONDITIONAL(CONTENT_ENCODING, true)

                   HAVE_LIBZ="1"

                          AC_SUBST(HAVE_LIBZ)])

else

  AC_MSG_WARN([zlib usage deliberately disabled])

fi

                   AC_SUBST(HAVE_LIBZ)

                   LIBS="$LIBS -lz"

                   AC_DEFINE(HAVE_ZLIB_H, 1, [if you have the zlib.h header file])

                   AC_DEFINE(HAVE_LIBZ, 1, [If zlib is available])],

                   [ CPPFLAGS=$_cppflags

                   LDFLAGS=$_ldflags])],

      [ CPPFLAGS=$_cppflags

      LDFLAGS=$_ldflags]

    )

    ;;

esac

dnl Default is to try the thread-safe versions of a few functions

OPT_THREAD=on

        setjmp.h

)

dnl Check for libz header

AC_CHECK_HEADERS(zlib.h)

dnl Checks for typedefs, structures, and compiler characteristics.

AC_C_CONST

AC_TYPE_SIZE_T

           curl-config

])

AC_OUTPUT