diff --git a/build.config.allmodconfig b/build.config.allmodconfig
index 56e4d2d29dc0..a76807f830a3 100644
--- a/build.config.allmodconfig
+++ b/build.config.allmodconfig
@@ -10,3 +10,5 @@ function update_config() {
     (cd ${OUT_DIR} && \
      make O=${OUT_DIR} $archsubarch CLANG_TRIPLE=${CLANG_TRIPLE} CROSS_COMPILE=${CROSS_COMPILE} "${TOOL_ARGS[@]}" ${MAKE_ARGS} olddefconfig)
 }
+
+ADDITIONAL_HOST_TOOLS="${ADDITIONAL_HOST_TOOLS} openssl"
diff --git a/build.config.common b/build.config.common
index 25de474489bd..8605f2c00aca 100644
--- a/build.config.common
+++ b/build.config.common
@@ -11,3 +11,5 @@ EXTRA_CMDS=''
 STOP_SHIP_TRACEPRINTK=1
 IN_KERNEL_MODULES=1
 DO_NOT_STRIP_MODULES=1
+
+HERMETIC_TOOLCHAIN=1