Don't use unportable shell statement.

diff --git a/ChangeLog b/ChangeLog
index 61d5e88..01f2b9f 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2007-03-26  Bruno Haible  <bruno@clisp.org>
+
+       * m4/vasnprintf.m4 (gl_PREREQ_VASNPRINTF_DIRECTIVE_A): Don't use
+       unportable shell command "if ! ...".
+       Reported by Ralf Wildenhues.
+
 2007-03-25  Bruno Haible  <bruno@clisp.org>
 
        * lib/sysexit_,h: If HAVE_SYSEXITS_H is defined, include the original

diff --git a/m4/vasnprintf.m4 b/m4/vasnprintf.m4
index a225c1c..7cd7589 100644 (file)
--- a/m4/vasnprintf.m4
+++ b/m4/vasnprintf.m4
@@ -66,12 +66,14 @@ AC_DEFUN([gl_PREREQ_VASNPRINTF],
 AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_A],
 [
   AC_REQUIRE([gl_PRINTF_DIRECTIVE_A])
-  if ! expr "$gl_cv_func_printf_directive_a" : ".*yes" > /dev/null; then
-    AC_DEFINE([NEED_PRINTF_DIRECTIVE_A], 1,
-      [Define if the vasnprintf implementation needs special code for
-       the 'a' and 'A' directives.])
-    AC_CHECK_FUNCS([nl_langinfo])
-  fi
+  case "$gl_cv_func_printf_directive_a" in
+    *yes)
+      AC_DEFINE([NEED_PRINTF_DIRECTIVE_A], 1,
+        [Define if the vasnprintf implementation needs special code for
+         the 'a' and 'A' directives.])
+      AC_CHECK_FUNCS([nl_langinfo])
+      ;;
+  esac
 ])
 
 # Prerequisites of lib/asnprintf.c.