* m4/shell.m4 (AC_PROG_SHELL): Test that $(...) works.

Problem reported for SGI IRIX 6 by Nelson H. F. Beebe in
<http://lists.gnu.org/archive/html/bug-gzip/2007-01/msg00007.html>.

diff --git a/ChangeLog b/ChangeLog
index 2f62ed2386d0117f18a398609752b477773f748d..b8415aa259f263fc3f0a9e9f9895b777023ebbc2 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2007-01-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+       * m4/shell.m4 (AC_PROG_SHELL): Test that $(...) works.
+       Problem reported for SGI IRIX 6 by Nelson H. F. Beebe in
+       <http://lists.gnu.org/archive/html/bug-gzip/2007-01/msg00007.html>.
+
 2007-01-04  Paul Eggert  <eggert@cs.ucla.edu>
 
        * zdiff.in (cmp0): New var.

diff --git a/m4/shell.m4 b/m4/shell.m4
index 7eb470761eb244bc6f06f3c56e0a5b152a41cecb..78ed36c32e365fc20546d28ac76409310f1d1c03 100644 (file)
--- a/m4/shell.m4
+++ b/m4/shell.m4
@@ -1,4 +1,4 @@
-#serial 4
+#serial 5
 
 # AC_PROG_SHELL
 # -------------
@@ -15,6 +15,8 @@ AC_DEFUN([AC_PROG_SHELL],
        >conftest.c || exit
        >|conftest.c || exit
        !>conftest.c || exit
+       # Test that $(...) works.
+       test "$(expr 3 + 4)" = 7 || exit
       '
       ac_cv_path_shell=no