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Correctly determine whether pow is available in libc on AIX 7 with xlc.
author
Bruno Haible
<bruno@clisp.org>
Sat, 31 Jul 2010 12:01:11 +0000
(14:01 +0200)
committer
Bruno Haible
<bruno@clisp.org>
Sat, 31 Jul 2010 12:01:11 +0000
(14:01 +0200)
ChangeLog
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m4/mathfunc.m4
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diff --git
a/ChangeLog
b/ChangeLog
index
1b4d2e9
..
e90bfe8
100644
(file)
--- a/
ChangeLog
+++ b/
ChangeLog
@@
-1,5
+1,12
@@
2010-07-31 Bruno Haible <bruno@clisp.org>
2010-07-31 Bruno Haible <bruno@clisp.org>
+ Correctly determine whether pow is available in libc on AIX 7 with xlc.
+ * m4/mathfunc.m4 (gl_MATHFUNC): Actually use the 'funcptr' variable.
+ This disables an xlc optimization that was causing wrong test results.
+ Reported by Rainer Tammer.
+
+2010-07-31 Bruno Haible <bruno@clisp.org>
+
iconv: Work around AIX 6.1..7.1 bug.
* doc/posix-functions/iconv.texi: Mention AIX 6.1, 7.1 bug.
* m4/iconv.m4 (AM_ICONV_LINK): Test against AIX 6.1, 7.1 bug. When
iconv: Work around AIX 6.1..7.1 bug.
* doc/posix-functions/iconv.texi: Mention AIX 6.1, 7.1 bug.
* m4/iconv.m4 (AM_ICONV_LINK): Test against AIX 6.1, 7.1 bug. When
diff --git
a/m4/mathfunc.m4
b/m4/mathfunc.m4
index
92faac9
..
2cd47df
100644
(file)
--- a/
m4/mathfunc.m4
+++ b/
m4/mathfunc.m4
@@
-1,4
+1,4
@@
-# mathfunc.m4 serial
5
+# mathfunc.m4 serial
6
dnl Copyright (C) 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,
dnl Copyright (C) 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,
@@
-24,12
+24,15
@@
AC_DEFUN([gl_MATHFUNC],
[gl_cv_func_]func[_no_libm],
[
AC_LINK_IFELSE(
[gl_cv_func_]func[_no_libm],
[
AC_LINK_IFELSE(
- [AC_LANG_PROGRAM([[#ifndef __NO_MATH_INLINES
- # define __NO_MATH_INLINES 1 /* for glibc */
- #endif
- #include <math.h>
- $2 (*funcptr) $3 = ]func[;]],
- [[return 0;]])],
+ [AC_LANG_PROGRAM(
+ [[#ifndef __NO_MATH_INLINES
+ # define __NO_MATH_INLINES 1 /* for glibc */
+ #endif
+ #include <math.h>
+ $2 (*funcptr) $3 = ]func[;]],
+ [[$2 y = funcptr ]m4_bpatsubst([m4_bpatsubst([$3], [int], [2])], [double], [1.6180339887])[;
+ return y < 0.3 || y > 1.7;
+ ]])],
[gl_cv_func_]func[_no_libm=yes],
[gl_cv_func_]func[_no_libm=no])
])
[gl_cv_func_]func[_no_libm=yes],
[gl_cv_func_]func[_no_libm=no])
])
@@
-40,12
+43,15
@@
AC_DEFUN([gl_MATHFUNC],
save_LIBS="$LIBS"
LIBS="$LIBS -lm"
AC_LINK_IFELSE(
save_LIBS="$LIBS"
LIBS="$LIBS -lm"
AC_LINK_IFELSE(
- [AC_LANG_PROGRAM([[#ifndef __NO_MATH_INLINES
- # define __NO_MATH_INLINES 1 /* for glibc */
- #endif
- #include <math.h>
- $2 (*funcptr) $3 = ]func[;]],
- [[return 0;]])],
+ [AC_LANG_PROGRAM(
+ [[#ifndef __NO_MATH_INLINES
+ # define __NO_MATH_INLINES 1 /* for glibc */
+ #endif
+ #include <math.h>
+ $2 (*funcptr) $3 = ]func[;]],
+ [[$2 y = funcptr ]m4_bpatsubst([m4_bpatsubst([$3], [int], [2])], [double], [1.6180339887])[;
+ return y < 0.3 || y > 1.7;
+ ]])],
[gl_cv_func_]func[_in_libm=yes],
[gl_cv_func_]func[_in_libm=no])
LIBS="$save_LIBS"
[gl_cv_func_]func[_in_libm=yes],
[gl_cv_func_]func[_in_libm=no])
LIBS="$save_LIBS"