build: added an option to enforce memory alignment

Signed-off-by: Leonardo Alminana <[email protected]>

CMakeLists.txt

@@ -148,6 +148,7 @@ option(FLB_WINDOWS_DEFAULTS    "Build with predefined Windows settings"     Yes)
 option(FLB_WASM                "Build with WASM runtime support"            Yes)
 option(FLB_WAMRC               "Build with WASM AOT compiler executable"    No)
 option(FLB_WASM_STACK_PROTECT  "Build with WASM runtime with strong stack protector flags" No)
+option(FLB_ENFORCE_ALIGNMENT   "Enable limited platform specific aligned memory access" No)
 
 # Native Metrics Support (cmetrics)
 option(FLB_METRICS             "Enable metrics support"       Yes)
@@ -338,6 +339,11 @@ if(FLB_IPO STREQUAL "On" OR (FLB_IPO STREQUAL "ReleaseOnly" AND FLB_RELEASE))
   endif()
 endif()
 
+# Memory alignment enforcement
+if(FLB_ENFORCE_ALIGNMENT)
+  FLB_DEFINITION(FLB_ENFORCE_ALIGNMENT)
+endif()
+
 # Harden release binary against security vulnerabilities
 if(FLB_SECURITY STREQUAL "On" OR (FLB_SECURITY STREQUAL "ReleaseOnly" AND FLB_RELEASE))
   if (NOT MSVC)