~ubuntu-branches/ubuntu/karmic/e-uae/karmic

dnl Available from the GNU Autoconf Macro Archive at:

dnl http://www.gnu.org/software/ac-archive/htmldoc/check_zlib.html

dnl

AC_DEFUN([CHECK_ZLIB],

#

# Handle user hints

#

[AC_MSG_CHECKING(if zlib is wanted)

AC_ARG_WITH(zlib,

[  --with-zlib=DIR root directory path of zlib installation [defaults to

                    /usr/local or /usr if not found in /usr/local]

  --without-zlib to disable zlib usage completely],

[if test "$withval" != no ; then

  AC_MSG_RESULT(yes)

  ZLIB_HOME="$withval"

else

  AC_MSG_RESULT(no)

fi], [

AC_MSG_RESULT(yes)

ZLIB_HOME=/usr/local

if test ! -f "${ZLIB_HOME}/include/zlib.h"

then

        ZLIB_HOME=/usr

fi

])

 

#

# Locate zlib, if wanted

#

if test -n "${ZLIB_HOME}"

then

        ZLIB_OLD_LDFLAGS=$LDFLAGS

        ZLIB_OLD_CPPFLAGS=$LDFLAGS

        LDFLAGS="$LDFLAGS -L${ZLIB_HOME}/lib"

        CPPFLAGS="$CPPFLAGS -I${ZLIB_HOME}/include"

        AC_LANG_SAVE

        AC_LANG_C

        AC_CHECK_LIB(z, inflateEnd, [zlib_cv_libz=yes], [zlib_cv_libz=no])

        AC_CHECK_HEADER(zlib.h, [zlib_cv_zlib_h=yes], [zlib_cvs_zlib_h=no])

        AC_LANG_RESTORE

        if test "$zlib_cv_libz" = "yes" -a "$zlib_cv_zlib_h" = "yes"

        then

                #

                # If both library and header were found, use them

                #

                AC_CHECK_LIB(z, inflateEnd)

                AC_MSG_CHECKING(zlib in ${ZLIB_HOME})

                AC_MSG_RESULT(ok)

        else

                #

                # If either header or library was not found, revert and bomb

                #

                AC_MSG_CHECKING(zlib in ${ZLIB_HOME})

                LDFLAGS="$ZLIB_OLD_LDFLAGS"

                CPPFLAGS="$ZLIB_OLD_CPPFLAGS"

                AC_MSG_RESULT(failed)

                AC_MSG_ERROR(either specify a valid zlib installation with --with-zlib=DIR or disable zlib usage with --without-zlib)

        fi

fi

 

])