From c1e0f2a2e835ba016dc25276296bb0ee46329993 Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Sun, 27 Oct 2019 20:37:46 +0100
Subject: [PATCH] Fetch imported m4 files during autogen.sh invocation.

---
 .gitignore | 1 +
 autogen.sh | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/.gitignore b/.gitignore
index abd190d..15454f4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,6 +25,7 @@
 /build-aux/ltmain.sh
 /build-aux/test-driver.diff
 /build-aux/texinfo.tex
+/m4/ax_cxx_compile_stdcxx.m4
 /m4/host-cpu-c-abi.m4
 /m4/lib-ld.m4
 /m4/lib-link.m4
diff --git a/autogen.sh b/autogen.sh
index 8846367..8617bcb 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -45,6 +45,13 @@ for f in build-aux/config.guess build-aux/config.sub \
   } || rm -f $f.tmp
 done
 
+# autoconf archive
+for f in m4/ax_cxx_compile_stdcxx.m4; do
+  { wget -nv --timeout=5 -O $f.tmp "https://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=blob_plain;f=${f}" \
+      && mv $f.tmp $f; \
+  } || rm -f $f.tmp
+done
+
 # texinfo.tex
 # The most recent snapshot of it is available in the gnulib repository.
 # But this is a snapshot, with all possible dangers.
-- 
2.49.0