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-rw-r--r--config/ChangeLog6
-rw-r--r--config/acx.m423
2 files changed, 29 insertions, 0 deletions
diff --git a/config/ChangeLog b/config/ChangeLog
index 9152d8a..3556e08 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,9 @@
+2008-04-04 Nick Clifton <nickc@redhat.com>
+
+ PR binutils/4334
+ * acx.m4 (ACX_CHECK_CYGWIN_CAT_WORKS): New macro to check that
+ cygwin builds are not running in textmode.
+
2008-03-27 Paolo Bonzini <bonzini@gnu.org>
* extensions.m4: New.
diff --git a/config/acx.m4 b/config/acx.m4
index c8a32c9..d186a4c 100644
--- a/config/acx.m4
+++ b/config/acx.m4
@@ -595,3 +595,26 @@ AC_DEFUN([ACX_BUGURL],[
AC_SUBST(REPORT_BUGS_TO)
AC_SUBST(REPORT_BUGS_TEXI)
])
+
+dnl ####
+dnl # ACX_CHECK_CYGWIN_CAT_WORKS
+dnl # On Cygwin hosts, check that the cat command ignores
+dnl # carriage returns as otherwise builds will not work.
+dnl # See binutils PR 4334 for more details.
+AC_DEFUN([ACX_CHECK_CYGWIN_CAT_WORKS],[
+AC_MSG_CHECKING([to see if cat works as expected])
+echo a >cygwin-cat-check
+if test `cat cygwin-cat-check` == a ; then
+ rm cygwin-cat-check
+ AC_MSG_RESULT(yes)
+else
+ rm cygwin-cat-check
+ AC_MSG_RESULT(no)
+ AC_MSG_ERROR([The cat command does not ignore carriage return characters.
+ Please either mount the build directory in binary mode or run the following
+ commands before running any configure script:
+set -o igncr
+export SHELLOPTS
+ ])
+fi
+])