dnl @synopsis AC_CHECK_SYMBOL(SYMBOL, HEADER... [,ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]])

dnl

dnl a wrapper around AC_EGREP_HEADER the shellvar $ac_found will hold

dnl the HEADER-name that had been containing the symbol. This value is

dnl shown to the user.

dnl

dnl @category C

dnl @author Guido U. Draheim <guidod@gmx.de>

dnl @version 2006-10-13

dnl @license GPLWithACException

AC_DEFUN([AC_CHECK_SYMBOL],

[AC_MSG_CHECKING([for $1 in $2])

AC_CACHE_VAL(ac_cv_func_$1,

[AC_REQUIRE_CPP()dnl

changequote(, )dnl

symbol="[^a-zA-Z_0-9]$1[^a-zA-Z_0-9]"

changequote([, ])dnl

ac_found=no

for ac_header in $2 ; do

  ac_safe=`echo "$ac_header" | sed 'y%./+-%__p_%' `

  if test $ac_found != "yes" ; then

      if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then

            AC_EGREP_HEADER( $symbol, $ac_header, [ac_found="$ac_header"] )

      fi

  fi

done

if test "$ac_found" != "no" ; then

  AC_MSG_RESULT($ac_found)

  ifelse([$3], , :, [$3])

else

  AC_MSG_RESULT(no)

  ifelse([$4], , , [$4

])dnl

fi

])])

dnl AC_CHECK_SYMBOLS( symbol..., header... [, action-if-found [, action-if-not-found]])

AC_DEFUN([AC_CHECK_SYMBOLS],

[for ac_func in $1

do

P4_CHECK_SYMBOL($ac_func, $2,

[changequote(, )dnl

  ac_tr_func=HAVE_`echo $ac_func | sed -e 'y:abcdefghijklmnopqrstuvwxyz:ABCDEFGHIJKLMNOPQRSTUVWXYZ:' -e 's:[[^A-Z0-9]]:_:'`

changequote([, ])dnl

  AC_DEFINE_UNQUOTED($ac_tr_func) $2], $3)dnl

done

])