diff --git a/lang/mono5.10/Makefile b/lang/mono5.10/Makefile
index d3939c92ac63..a06d91cff523 100644
--- a/lang/mono5.10/Makefile
+++ b/lang/mono5.10/Makefile
@@ -1,107 +1,110 @@
 PORTNAME=	mono
 PORTVERSION=	5.10.1.57
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	lang
 MASTER_SITES=	https://download.mono-project.com/sources/mono/
 PKGNAMESUFFIX=	5.10
 DISTFILES=	${PORTNAME}-${PORTVERSION}${EXTRACT_SUFX}
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Open source implementation of .NET Development Framework
 WWW=		https://www.mono-project.com/
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 ONLY_FOR_ARCHS=	aarch64 amd64 armv6 armv7 i386 powerpc powerpc64 powerpc64le
+.ifdef QEMU_EMULATING
+BROKEN=		fails to build
+.endif
 
 BUILD_DEPENDS=	p5-XML-Parser>=0:textproc/p5-XML-Parser \
 		bash:shells/bash \
 		cmake-core>0:devel/cmake-core
 LIB_DEPENDS=	libinotify.so:devel/libinotify
 RUN_DEPENDS=	${PY_PILLOW} \
 		ca_root_nss>=0:security/ca_root_nss
 
 CONFLICTS_INSTALL=	certmgr coin-or-disco disco mono mono[0-9]*
 
 OPTIONS_DEFINE=		MONOLITE NLS X11
 OPTIONS_DEFAULT=	MONOLITE X11
 OPTIONS_SUB=	yes
 
 MONOLITE_DESC=		Use monolite to bootstrap mcs (otherwise use installed mcs)
 MONOLITE_DISTFILES=	monolite-linux-${MONOLITE_VERSION}-latest.tar.gz:monolite
 MONOLITE_MASTER_SITES=	http://download.mono-project.com/monolite/:monolite
 MONOLITE_VERSION=	1051000004
 
 NLS_CONFIGURE_OFF=	--disable-nls
 NLS_USES=	gettext
 
 X11_USES=	display:test
 
 USES=	autoreconf bison compiler:c11 cpe gmake iconv libtool \
 	pathfix perl5 python shebangfix tar:bzip2
 USE_PERL5=	build
 GNU_CONFIGURE=	yes
 USE_LDCONFIG=	yes
 SHEBANG_FILES=	scripts/mono-heapviz mono/mini/genmdesc.py mono/tests/test_lldb.py
 BINARY_ALIAS=	python=${PYTHON_CMD}
 
 CONFIGURE_ARGS=	--disable-dtrace
 CONFIGURE_ENV=	ac_cv_header_sys_inotify_h=no
 
 MAKE_ENV=	MONO_SHARED_DIR="${WRKDIR}" \
 		INSTALL_STRIP_FLAG="${STRIP}" \
 		TZ=UTC
 
 TEST_ARGS=	-k
 TEST_TARGET=	check
 
 PORTSCOUT=	limit:^\d+\.\d+\.[1-9]\d*
 
 LOCALBASE?=	/usr/local
 .if !exists(${LOCALBASE}/bin/mcs)
 OPTIONS_SLAVE=	MONOLITE
 .endif
 
 .include <bsd.port.options.mk>
 
 .if ${ARCH} == aarch64
 EXTRA_PATCHES=	${FILESDIR}/extra-patch-aarch64-race-workaround
 PLIST=	${.CURDIR}/pkg-plist.aarch64
 .endif
 
 .if ${ARCH:Mpowerpc*}
 PLIST+=	${.CURDIR}/pkg-plist.powerpc
 .else
 CONFIGURE_ARGS+=	--enable-btls
 .endif
 
 post-extract-MONOLITE-on:
 	${MKDIR} ${WRKSRC}/mcs/class/lib/monolite-linux
 	${MV} ${WRKDIR}/monolite-linux-${MONOLITE_VERSION}-latest ${WRKSRC}/mcs/class/lib/monolite-linux/${MONOLITE_VERSION}
 
 post-patch:
 	${REINPLACE_CMD} -e 's|^#!/bin/bash|#!/usr/bin/env bash|g' \
 		${WRKSRC}/scripts/mono-find-provides.in \
 		${WRKSRC}/scripts/mono-find-requires.in \
 		${WRKSRC}/scripts/mono-test-install
 	${FIND} ${WRKSRC} -name '*.sh' | ${XARGS} ${REINPLACE_CMD} \
 		-e 's|^#!/bin/bash|#!/bin/sh|g'
 	${SED} 's/tarball/${PORTVERSION}/' ${WRKSRC}/mono/mini/Makefile.am.in \
 		> ${WRKSRC}/mono/mini/Makefile.am
 	${REINPLACE_CMD} -e 's|/usr/share|${PREFIX}|g' \
 		${WRKSRC}/mcs/class/corlib/System/Environment.cs \
 		${WRKSRC}/external/corefx/src/System.Runtime.Extensions/src/System/Environment.Unix.cs
 	${REINPLACE_CMD} -e 's|/usr/share/.mono|${PREFIX}/share/mono|g' \
 		${WRKSRC}/man/mono-configuration-crypto.1 \
 		${WRKSRC}/man/mono.1 \
 		${WRKSRC}/man/mozroots.1
 
 post-configure:
 	${REINPLACE_CMD} -e 's|share\/man|man|g' \
 		${WRKSRC}/mcs/jay/Makefile
 
 post-install:
 	${MKDIR} ${STAGEDIR}${PREFIX}/mono
 
 .include <bsd.port.mk>
diff --git a/lang/mono5.10/files/patch-mono_mini_exceptions-ppc.c b/lang/mono5.10/files/patch-mono_mini_exceptions-ppc.c
new file mode 100644
index 000000000000..477ff908793e
--- /dev/null
+++ b/lang/mono5.10/files/patch-mono_mini_exceptions-ppc.c
@@ -0,0 +1,11 @@
+--- mono/mini/exceptions-ppc.c.orig	2023-03-18 12:46:51 UTC
++++ mono/mini/exceptions-ppc.c
+@@ -809,7 +809,7 @@ mono_arch_setup_async_callback (MonoContext *ctx, void
+ {
+ 	uintptr_t sp = (uintptr_t) MONO_CONTEXT_GET_SP(ctx);
+ 	sp -= PPC_MINIMAL_STACK_SIZE;
+-	*(unsigned long *)sp = MONO_CONTEXT_GET_SP(ctx);
++	*(unsigned long *)sp = (unsigned long)MONO_CONTEXT_GET_SP(ctx);
+ 	MONO_CONTEXT_SET_BP(ctx, sp);
+ 	MONO_CONTEXT_SET_IP(ctx, (unsigned long) async_cb);
+ }
diff --git a/lang/mono5.10/files/patch-mono_mini_mini-x86.h b/lang/mono5.10/files/patch-mono_mini_mini-x86.h
new file mode 100644
index 000000000000..d804a58edb74
--- /dev/null
+++ b/lang/mono5.10/files/patch-mono_mini_mini-x86.h
@@ -0,0 +1,11 @@
+--- mono/mini/mini-x86.h.orig	2018-08-24 15:17:13 UTC
++++ mono/mini/mini-x86.h
+@@ -139,7 +139,7 @@ struct MonoLMF {
+ 	 * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
+ 	 * the other fields are not valid.
+ 	 */
+-	guint32    previous_lmf;
++	gpointer    previous_lmf;
+ 	gpointer    lmf_addr;
+ 	/* Only set in trampoline LMF frames */
+ 	MonoMethod *method;