diff --git a/apr-1.7.0-autoconf.patch b/apr-1.7.0-autoconf.patch
new file mode 100644
index 0000000..e9e4eac
--- /dev/null
+++ b/apr-1.7.0-autoconf.patch
@@ -0,0 +1,19 @@
+--- a/build/apr_common.m4	2021/03/06 18:45:02	1887278
++++ b/build/apr_common.m4	2021/03/06 22:20:59	1887279
+@@ -467,13 +467,9 @@
+    CFLAGS="$CFLAGS -Werror"
+  fi
+  AC_COMPILE_IFELSE(
+-  [AC_LANG_SOURCE(
+-   [#include "confdefs.h"
+-   ]
+-   [[$1]]
+-   [int main(int argc, const char *const *argv) {]
++  [AC_LANG_PROGRAM(
++   [[$1]],
+    [[$2]]
+-   [   return 0; }]
+   )], [CFLAGS=$apr_save_CFLAGS
+ $3],  [CFLAGS=$apr_save_CFLAGS
+ $4])
+
diff --git a/apr.spec b/apr.spec
index 3b6eb21..0a7219d 100644
--- a/apr.spec
+++ b/apr.spec
@@ -6,7 +6,7 @@
 Summary: Apache Portable Runtime library
 Name: apr
 Version: 1.7.0
-Release: 8%{?dist}
+Release: 9%{?dist}
 # ASL 2.0: everything
 # ISC: network_io/apr-1.4.6/network_io/unix/inet_?to?.c
 # BSD with advertising: strings/apr_snprintf.c, strings/apr_fnmatch.c,
@@ -20,6 +20,7 @@ Source1: apr-wrapper.h
 Patch1: apr-1.2.2-libdir.patch
 Patch2: apr-1.2.7-pkgconf.patch
 Patch3: apr-1.7.0-deepbind.patch
+Patch4: apr-1.7.0-autoconf.patch
 BuildRequires: gcc, autoconf, libtool, libuuid-devel, python3
 # To enable SCTP support
 BuildRequires: lksctp-tools-devel
@@ -47,6 +48,7 @@ C data structures and routines.
 %patch1 -p1 -b .libdir
 %patch2 -p1 -b .pkgconf
 %patch3 -p1 -b .deepbind
+%patch4 -p1 -b .autoconf-2-71
 
 %build
 # regenerate configure script etc.
@@ -125,6 +127,9 @@ popd
 %{_datadir}/aclocal/*.m4
 
 %changelog
+* Mon Apr 12 2021 Lubos Uhliarik <luhliari@redhat.com> - 1.7.0-9
+- Resolves: #1942985 - apr: FTBFS with upcoming autoconf-2.71
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.7.0-8
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild