singularity: fix build with automake-1.16.5

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

recipes-containers/singularity/singularity/0001-configure.ac-drop-2nd-AM_INIT_AUTOMAKE.patch

@@ -0,0 +1,34 @@
+From 13ee3e016490e74868b64e3a07dcccf9feafebdf Mon Sep 17 00:00:00 2001
+From: Martin Jansa <Martin.Jansa@gmail.com>
+Date: Tue, 30 Nov 2021 05:59:06 -0800
+Subject: [PATCH] configure.ac: drop 2nd AM_INIT_AUTOMAKE
+
+* automake-1.16.5 introduced in oe-core:
+  https://git.openembedded.org/openembedded-core/commit/?id=851167b3a41b1728407d331c1666827fb730daa1
+  doesn't like this after:
+  http://git.savannah.gnu.org/cgit/automake.git/commit/?id=f4a3a70f69e1dbccb6578f39ef47835098a04624
+
+  and do_configure fails with:
+  configure.ac:38: error: AM_INIT_AUTOMAKE expanded multiple times
+
+  There is no point in upstreaming this, because singularity-2.3.1 is very old and
+  whole autotools support is removed in version 3 (currently 3.8.5) with:
+  https://github.com/hpcng/singularity/commit/a06e3d13a822080d7a9bc55085ee1bb32026a96e
+
+Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
+---
+ configure.ac | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index 8ffa5ab32..a5a35c43a 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -35,7 +35,6 @@ AC_GNU_SOURCE
+ AC_PROG_INSTALL
+ AC_PROG_LIBTOOL
+ AC_PROG_CC
+-AM_INIT_AUTOMAKE
+ AM_PROG_CC_C_O
+ AC_ENABLE_SHARED
+ AC_PROG_LIBTOOL(libtool)

recipes-containers/singularity/singularity_git.bb

@@ -12,6 +12,7 @@ LIC_FILES_CHKSUM = "file://COPYRIGHT.md;md5=be78c34e483dd7d8439358b1e024b294 \
 
 SRC_URI = "git://github.com/singularityware/singularity.git;protocol=https;branch=master \
     file://0001-Use-python3.patch \
+    file://0001-configure.ac-drop-2nd-AM_INIT_AUTOMAKE.patch \
 "
 PV = "2.3.1+git${SRCPV}"
 SRCREV = "e214d4ebf0a1274b1c63b095fd55ae61c7e92947"