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21 lines
539 B
Plaintext
21 lines
539 B
Plaintext
dnl $Id: check-var.m4,v 1.2 1999/03/01 09:52:23 joda Exp $
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dnl
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dnl AC_CHECK_VAR(includes, variable)
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AC_DEFUN(AC_CHECK_VAR, [
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AC_MSG_CHECKING(for $2)
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AC_CACHE_VAL(ac_cv_var_$2, [
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AC_TRY_LINK([extern int $2;
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int foo() { return $2; }],
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[foo()],
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ac_cv_var_$2=yes, ac_cv_var_$2=no)
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])
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define([foo], [HAVE_]translit($2, [a-z], [A-Z]))
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AC_MSG_RESULT(`eval echo \\$ac_cv_var_$2`)
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if test `eval echo \\$ac_cv_var_$2` = yes; then
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AC_DEFINE_UNQUOTED(foo, 1, [define if you have $2])
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AC_CHECK_DECLARATION([$1],[$2])
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fi
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undefine([foo])
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])
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