autoconf-archive: Patch for nvhpc support and propagate search dirs (#30692)

var/spack/repos/builtin/packages/autoconf-archive/2022.02.11-ax_cc_maxopt-nvhpc.patch

@@ -0,0 +1,30 @@
+From c92672b9c59f9011e5d68220e99cfdd70c1b98df Mon Sep 17 00:00:00 2001
+From: Reuben Thomas <rrt@sc3d.org>
+Date: Mon, 25 Apr 2022 12:37:10 +0100
+Subject: [PATCH] m4/ax_cc_maxopt.m4: add missing ;; to end of case
+
+---
+ m4/ax_cc_maxopt.m4 | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/m4/ax_cc_maxopt.m4 b/m4/ax_cc_maxopt.m4
+index 05218e36..7ad53438 100644
+--- a/m4/ax_cc_maxopt.m4
++++ b/m4/ax_cc_maxopt.m4
+@@ -55,7 +55,7 @@
+ #   modified version of the Autoconf Macro, you may extend this special
+ #   exception to the GPL to apply to your modified version as well.
+ 
+-#serial 22
++#serial 23
+ 
+ AC_DEFUN([AX_CC_MAXOPT],
+ [
+@@ -146,6 +146,7 @@ if test "x$ac_test_CFLAGS" = "x"; then
+     nvhpc)
+      # default optimization flags for nvhpc
+      CFLAGS="$CFLAGS -O3"
++     ;;
+ 
+     gnu)
+      # default optimization flags for gcc on all systems

var/spack/repos/builtin/packages/autoconf-archive/package.py

@@ -13,3 +13,10 @@ class AutoconfArchive(AutotoolsPackage, GNUMirrorPackage):
 
     version('2022.02.11', sha256='78a61b611e2eeb55a89e0398e0ce387bcaf57fe2dd53c6fe427130f777ad1e8c')
     version('2019.01.06', sha256='17195c833098da79de5778ee90948f4c5d90ed1a0cf8391b4ab348e2ec511e3f')
+
+    # https://github.com/autoconf-archive/autoconf-archive/pull/251
+    patch('2022.02.11-ax_cc_maxopt-nvhpc.patch', when='@2022.02.11')
+
+    def setup_dependent_build_environment(self, env, dependent_spec):
+        """Adds the ACLOCAL path for autotools."""
+        env.append_path('ACLOCAL_PATH', self.prefix.share.aclocal)