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Added acinclude.m4 with AC_HAVE_STRUCT_FIELD() macro.

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Marcus Sundberg 2000-05-20 23:35:59 +00:00
parent 3e560f5cfd
commit 5410b16ec8
1 changed files with 17 additions and 0 deletions
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17
acinclude.m4 Normal file
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@ -0,0 +1,17 @@
dnl check for fields in a structure
dnl
dnl AC_HAVE_STRUCT_FIELD(struct, field, headers)
AC_DEFUN(AC_HAVE_STRUCT_FIELD, [
define(cache_val, translit(ac_cv_type_$1_$2, [A-Z ], [a-z_]))
AC_CACHE_CHECK([for $2 in $1], cache_val,[
AC_TRY_COMPILE([$3],[$1 x; x.$2;],
cache_val=yes,
cache_val=no)])
if test "$cache_val" = yes; then
define(foo, translit(HAVE_$1_$2, [a-z ], [A-Z_]))
AC_DEFINE(foo, 1, [Define if $1 has field $2.])
undefine(foo)
fi
undefine(cache_val)
])