diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/gmp/gmp-6.2.1-r2.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/gmp/gmp-6.2.1-r2.ebuild
index 6cabb0d521..f2cf7e98c6 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/gmp/gmp-6.2.1-r2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/gmp/gmp-6.2.1-r2.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=7
 
-inherit libtool multilib-minimal toolchain-funcs
+inherit libtool flag-o-matic multilib-minimal toolchain-funcs
 
 MY_PV=${PV/_p*}
 MY_PV=${MY_PV/_/-}
@@ -66,6 +66,11 @@ src_prepare() {
 }
 
 multilib_src_configure() {
+	# Generally a very fragile package
+	strip-flags
+	# Miscompiled with LTO at least on arm64, bug #889948
+	filter-lto
+
 	# Because of our 32-bit userland, 1.0 is the only HPPA ABI that works
 	# https://gmplib.org/manual/ABI-and-ISA.html#ABI-and-ISA (bug #344613)
 	if [[ ${CHOST} == hppa2.0-* ]] ; then
diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/gmp/gmp-6.2.1-r5.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/gmp/gmp-6.2.1-r5.ebuild
index a3c223b16e..5854254998 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/gmp/gmp-6.2.1-r5.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/gmp/gmp-6.2.1-r5.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-inherit gnuconfig libtool multilib-minimal toolchain-funcs
+inherit gnuconfig libtool flag-o-matic multilib-minimal toolchain-funcs
 
 MY_PV=${PV/_p*}
 MY_PV=${MY_PV/_/-}
@@ -94,6 +94,11 @@ src_prepare() {
 }
 
 multilib_src_configure() {
+	# Generally a very fragile package
+	strip-flags
+	# Miscompiled with LTO at least on arm64, bug #889948
+	filter-lto
+
 	# Because of our 32-bit userland, 1.0 is the only HPPA ABI that works
 	# https://gmplib.org/manual/ABI-and-ISA.html#ABI-and-ISA (bug #344613)
 	if [[ ${CHOST} == hppa2.0-* ]] ; then