Re: new module 'jit/cache'

[Bruno Haible]

>       * m4/valgrind-helper.m4: New file.

Oops, that file was incomplete. Fixed like this:


2023-11-13  Bruno Haible  <bruno@clisp.org>

        jit/cache: Fix configure test.
        * m4/valgrind-helper.m4 (gl_VALGRIND_HELPER): Check already at configure
        time whether <valgrind/valgrind.h> exists. Fix AC_DEFINE_UNQUOTED
        invocation.

diff --git a/m4/valgrind-helper.m4 b/m4/valgrind-helper.m4
index b3d70a7ad9..99c31030b9 100644
--- a/m4/valgrind-helper.m4
+++ b/m4/valgrind-helper.m4
@@ -1,4 +1,4 @@
-# valgrind-helper.m4 serial 1
+# valgrind-helper.m4 serial 2
 dnl Copyright (C) 2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -18,5 +18,13 @@ AC_DEFUN_ONCE([gl_VALGRIND_HELPER]
        support_valgrind=0
      fi
     ])
-  AC_DEFINE_UNQUOTED([ENABLE_VALGRIND_SUPPORT], [$support_valgrind])
+  if test $support_valgrind = 1; then
+    AC_CHECK_HEADERS([valgrind/valgrind.h])
+    if test $ac_cv_header_valgrind_valgrind_h != yes; then
+      AC_MSG_ERROR([cannot enable valgrind support: <valgrind/valgrind.h> not 
found])
+    fi
+  fi
+  AC_DEFINE_UNQUOTED([ENABLE_VALGRIND_SUPPORT], [$support_valgrind],
+    [Define to 1 to include support for running the binaries under valgrind,
+     or to 0 otherwise.])
 ])