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#serial 5
AC_DEFUN([jm_CHECK_DECLARATION],
[
AC_MSG_CHECKING([whether $1 is declared])
AC_CACHE_VAL(jm_cv_func_decl_$1,
[AC_TRY_COMPILE([$2],
[
#ifndef $1
char *(*pfn) = (char *(*)) $1
#endif
],
eval "jm_cv_func_decl_$1=yes",
eval "jm_cv_func_decl_$1=no")])
if eval "test \"`echo '$jm_cv_func_decl_'$1`\" = yes"; then
AC_MSG_RESULT(yes)
ifelse([$3], , :, [$3])
else
AC_MSG_RESULT(no)
ifelse([$4], , , [$4
])dnl
fi
])dnl
dnl jm_CHECK_DECLARATIONS(INCLUDES, FUNCTION... [, ACTION-IF-DECLARED
dnl [, ACTION-IF-NOT-DECLARED]])
AC_DEFUN([jm_CHECK_DECLARATIONS],
[
for jm_func in $2
do
jm_CHECK_DECLARATION($jm_func, [$1],
[
jm_tr_func=HAVE_DECL_`echo $jm_func | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
AC_DEFINE_UNQUOTED($jm_tr_func, 1, [Define if your system declares $1]) $3], [$4])dnl
done
])
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