#

# Check for supported __attribute__ features

#

# AC_C_ATTRIBUTE(FEATURE, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])

#

AC_DEFUN([AC_C_ATTRIBUTE],

[AS_VAR_PUSHDEF([CACHEVAR], [ax_cv_c_attribute_$1])dnl

AC_CACHE_CHECK([for __attribute__ (($1))],

CACHEVAR,[

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],

[[ void foo(void) __attribute__ (($1)); ]])],

[AS_VAR_SET(CACHEVAR, [yes])],

[AS_VAR_SET(CACHEVAR, [no])])])

AS_VAR_IF(CACHEVAR,yes,

[m4_default([$2], :)],

[m4_default([$3], :)])

AS_VAR_POPDEF([CACHEVAR])dnl

])dnl