The logs show:
configure:45348: checking whether round works
configure:45384: xlc -o conftest -g -D_THREAD_SAFE conftest.c -lm >&5
configure:45384: $? = 0
configure:45384: ./conftest
configure:45384: $? = 1
configure: program exited with status 1
gl_cv_func_round_works=${gl_cv_func_round_works=no}
2010-07-30 Bruno Haible <[email protected]>
round: Update regarding AIX.
* m4/round.m4 (gl_FUNC_ROUND): When cross-compiling, guess no on AIX 7.
* doc/posix-functions/round.texi: Mention bug on AIX 7.1.
Reported by Rainer Tammer.
--- doc/posix-functions/round.texi.orig Fri Jul 30 21:06:35 2010
+++ doc/posix-functions/round.texi Fri Jul 30 12:16:21 2010
@@ -13,7 +13,7 @@
FreeBSD 5.2.1, OpenBSD 3.8, AIX 5.1, IRIX 6.5, OSF/1 4.0, Solaris 9, Interix
3.5.
@item
This functions returns a wrong result for x = 1/2 - 2^-54 on some platforms:
-NetBSD 3.0.
+NetBSD 3.0, AIX 7.1.
@end itemize
Portability problems not fixed by Gnulib:
--- m4/round.m4.orig Fri Jul 30 21:06:35 2010
+++ m4/round.m4 Fri Jul 30 12:16:05 2010
@@ -1,4 +1,4 @@
-# round.m4 serial 8
+# round.m4 serial 9
dnl Copyright (C) 2007, 2009-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -40,8 +40,8 @@
exit (x < 0.5 && round (x) != 0.0);
}]])], [gl_cv_func_round_works=yes], [gl_cv_func_round_works=no],
[case "$host_os" in
- netbsd*) gl_cv_func_round_works="guessing no";;
- *) gl_cv_func_round_works="guessing yes";;
+ netbsd* | aix*) gl_cv_func_round_works="guessing no";;
+ *) gl_cv_func_round_works="guessing yes";;
esac
])
LIBS="$save_LIBS"
