diff --git a/meta/recipes-core/ovmf/ovmf_git.bb b/meta/recipes-core/ovmf/ovmf_git.bb
index 1fe01146d6..ef5545bf70 100644
--- a/meta/recipes-core/ovmf/ovmf_git.bb
+++ b/meta/recipes-core/ovmf/ovmf_git.bb
@@ -102,15 +102,22 @@ fix_toolchain_append_class-native() {
     # to make ovmf-native reusable across distros.
     sed -i \
         -e 's#^\(DEFINE GCC.*DLINK.*FLAGS  *=\)#\1 -fuse-ld=bfd#' \
+        -e 's#-flto#-fno-lto#g' \
+        -e 's#-DUSING_LTO##g' \
         ${S}/BaseTools/Conf/tools_def.template
 }
 
+# We disable lto above since the results are not reproducible and make it hard to compare
+# binary build aretfacts to debug reproducibility problems.
+# Surprisingly, if you disable lto, you see compiler warnings which are fatal. We therefore
+# have to hack warnings overrides into GCC_PREFIX_MAP to allow it to build.
+
 # We want to pass ${DEBUG_PREFIX_MAP} to gcc commands and also pass in
 # --debug-prefix-map to nasm (we carry a patch to nasm for this). The
 # tools definitions are built by ovmf-native so we need to pass this in
 # at target build time when we know the right values.
 export NASM_PREFIX_MAP = "--debug-prefix-map=${WORKDIR}=/usr/src/debug/ovmf/${EXTENDPE}${PV}-${PR}"
-export GCC_PREFIX_MAP = "${DEBUG_PREFIX_MAP}"
+export GCC_PREFIX_MAP = "${DEBUG_PREFIX_MAP} -Wno-stringop-overflow -Wno-maybe-uninitialized"
 
 GCC_VER="$(${CC} -v 2>&1 | tail -n1 | awk '{print $3}')"