67 lines
1.8 KiB
Plaintext
67 lines
1.8 KiB
Plaintext
#serial 1002
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# Experimental replacement for the function in the latest CVS autoconf.
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# If the compile-test says strerror_r doesn't work, then resort to a
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# `run'-test that works on BeOS and segfaults on DEC Unix.
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# Use with the error.c file in ../lib.
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undefine([AC_FUNC_STRERROR_R])
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# AC_FUNC_STRERROR_R
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# ------------------
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AC_DEFUN([AC_FUNC_STRERROR_R],
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[AC_CHECK_DECLS([strerror_r])
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AC_CHECK_FUNCS([strerror_r])
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if test $ac_cv_func_strerror_r = yes; then
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AC_CHECK_HEADERS(string.h)
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AC_CACHE_CHECK([for working strerror_r],
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ac_cv_func_strerror_r_works,
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[
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AC_TRY_COMPILE(
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[
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# include <stdio.h>
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# if HAVE_STRING_H
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# include <string.h>
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# endif
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],
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[
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char buf[100];
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char x = *strerror_r (0, buf, sizeof buf);
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],
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ac_cv_func_strerror_r_works=yes,
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ac_cv_func_strerror_r_works=no
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)
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if test $ac_cv_func_strerror_r_works = no; then
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# strerror_r seems not to work, but now we have to choose between
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# systems that have relatively inaccessible declarations for the
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# function. BeOS and DEC UNIX 4.0 fall in this category, but the
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# former has a strerror_r that returns char*, while the latter
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# has a strerror_r that returns `int'.
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# This test should segfault on the DEC system.
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AC_TRY_RUN(
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[
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# include <stdio.h>
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# include <string.h>
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# include <ctype.h>
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extern char *strerror_r ();
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int
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main ()
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{
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char buf[100];
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char x = *strerror_r (0, buf, sizeof buf);
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exit (!isalpha (x));
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}
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],
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ac_cv_func_strerror_r_works=yes,
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ac_cv_func_strerror_r_works=no,
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ac_cv_func_strerror_r_works=no)
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fi
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])
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if test $ac_cv_func_strerror_r_works = yes; then
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AC_DEFINE_UNQUOTED(HAVE_WORKING_STRERROR_R, 1,
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[Define to 1 if `strerror_r' returns a string.])
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fi
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fi
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])# AC_FUNC_STRERROR_R
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