Bruno Haible <br...@clisp.org> writes:
> 1) to apply the patch below,
> 2) to use the common idiom
> if test $HAVE_STRTOD = 0 || test $REPLACE_STRTOD = 1; then
> like you did above,
> 3) to improve the cross-compiling guess.
Here is #3:
>From 60471b91b5dbdf2c24c258640cee6dfdb32c4d6f Mon Sep 17 00:00:00 2001
From: Ben Pfaff <b...@cs.stanford.edu>
Date: Mon, 14 Jun 2010 17:15:41 -0700
Subject: [PATCH] strtod: Assume strtod() works when cross-compiling to
new-enough glibc.
---
ChangeLog | 4 +++-
m4/strtod.m4 | 14 +++++++++++++-
2 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 6192b4d..3090162 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,8 @@
2010-06-14 Ben Pfaff <b...@cs.stanford.edu>
- * m4/strtod.m4 (gl_FUNC_STRTOD): Factor out common code.
+ * m4/strtod.m4 (gl_FUNC_STRTOD): Factor out common code. Assume
+ that strtod() works when cross-compiling to a glibc version known
+ to work.
2010-06-13 Bruno Haible <br...@clisp.org>
diff --git a/m4/strtod.m4 b/m4/strtod.m4
index 36b5d2d..aa6a1c5 100644
--- a/m4/strtod.m4
+++ b/m4/strtod.m4
@@ -95,7 +95,19 @@ numeric_equal (double x, double y)
]])],
[gl_cv_func_strtod_works=yes],
[gl_cv_func_strtod_works=no],
- [gl_cv_func_strtod_works="guessing no"])])
+ [dnl The last known bugs in glibc strtod(), as of this writing,
+ dnl were fixed in version 2.8
+ AC_EGREP_CPP([Lucky user],
+ [
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8) || (__GLIBC__ > 2)
+ Lucky user
+ #endif
+#endif
+ ],
+ [gl_cv_func_strtod_works=yes],
+ [gl_cv_func_strtod_works="guessing no"])])])
if test "$gl_cv_func_strtod_works" != yes; then
REPLACE_STRTOD=1
fi
--
1.7.1
--
Ben Pfaff
http://benpfaff.org
