libgpg-error: build using gawk 5.0.0 is broken

Closes: https://trac.macports.org/ticket/58356
See: https://dev.gnupg.org/T4459
See: https://dev.gnupg.org/T4469

devel/libgpg-error/Portfile

@@ -1,11 +1,12 @@
 # -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
 
 PortSystem      1.0
+PortGroup       conflicts_build 1.0
 PortGroup       muniversal 1.0
 
 name            libgpg-error
 version         1.36
-revision        0
+revision        1
 categories      devel
 platforms       darwin
 license         LGPL-2.1+
@@ -29,6 +30,9 @@ checksums       rmd160  13a9405bcb8ef179fff58e72f47a54889ddd287f \
 depends_lib     port:libiconv \
                 port:gettext
 
+# build with gawk 5.0.0 is broken see https://trac.macports.org/ticket/58356
+conflicts_build gawk
+
 # fix build on Tiger see https://trac.macports.org/ticket/55145
 platform darwin 8 {
     configure.cppflags-append -D__DARWIN_UNIX03