strtod: Assume strtod() works when cross-compiling to new-enough glibc.

diff --git a/ChangeLog b/ChangeLog
index 47fe5b480922b9c3435089a72b2fd5bd037f9c73..48b37aaf22e7a7733071e22a5d8835e8fcaf0f90 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,8 @@
 2010-06-14  Ben Pfaff  <blp@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.
 
 2010-06-15  Bruno Haible  <bruno@clisp.org>
 

diff --git a/m4/strtod.m4 b/m4/strtod.m4
index 36b5d2dd8acc762071c7df8ab6eed989bd78c09f..aa6a1c53d50bdee99bcc6d47c625c410b1757c5d 100644 (file)
--- 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