diff -ru yubihsm-shell-2.4.0-orig/cmake/SecurityFlags.cmake yubihsm-shell-2.4.0/cmake/SecurityFlags.cmake
--- yubihsm-shell-2.4.0-orig/cmake/SecurityFlags.cmake	2023-04-07 20:11:44.438751635 +0200
+++ yubihsm-shell-2.4.0/cmake/SecurityFlags.cmake	2023-04-07 20:12:30.588873600 +0200
@@ -4,7 +4,7 @@
     CMAKE_C_COMPILER_ID STREQUAL "AppleClang" OR
     CMAKE_C_COMPILER_ID STREQUAL "GNU")
 
-    add_compile_options (-Wall -Wextra -Werror)
+    add_compile_options (-Wall -Wextra)
     add_compile_options (-Wformat -Wformat-nonliteral -Wformat-security)
     add_compile_options (-Wshadow)
     add_compile_options (-Wcast-qual)
@@ -13,7 +13,6 @@
     add_compile_options (-pedantic -pedantic-errors)
     add_compile_options (-fpie -fpic)
     if (NOT FUZZ)
-        add_compile_options(-O2)
         add_definitions (-D_FORTIFY_SOURCE=2)
     endif ()