Improve cross-compilation guesses for uClibc.

[gnulib.git] / m4 / strcasestr.m4

diff --git a/m4/strcasestr.m4 b/m4/strcasestr.m4
index 5c4cef4..b7ae301 100644 (file)
--- a/m4/strcasestr.m4
+++ b/m4/strcasestr.m4
@@ -1,4 +1,4 @@
-# strcasestr.m4 serial 18
+# strcasestr.m4 serial 19
 dnl Copyright (C) 2005, 2007, 2008, 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,
@@ -32,14 +32,17 @@ AC_DEFUN([gl_FUNC_STRCASESTR_SIMPLE],
       ]])],
           [gl_cv_func_strcasestr_works_always=yes],
           [gl_cv_func_strcasestr_works_always=no],
-          [dnl glibc 2.12 and cygwin 1.7.7 have a known bug.  Assume that it
-           dnl works on all other platforms, even if it is not linear.
+          [dnl glibc 2.12 and cygwin 1.7.7 have a known bug.  uClibc is not
+           dnl affected, since it uses different source code for strcasestr
+           dnl than glibc.
+           dnl Assume that it works on all other platforms, even if it is not
+           dnl linear.
            AC_EGREP_CPP([Lucky user],
              [
 #ifdef __GNU_LIBRARY__
  #include <features.h>
  #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \
-     && !defined __UCLIBC__
+     || defined __UCLIBC__
   Lucky user
  #endif
 #elif defined __CYGWIN__