Enable build-id linker flag

CMakeLists.txt

@@ -94,6 +94,8 @@ option(VAST_STATIC_EXECUTABLE "Link VAST statically"
        $ENV{VAST_STATIC_EXECUTABLE})
 option(VAST_USE_JEMALLOC "Use jemalloc instead of libc malloc"
        "${VAST_STATIC_EXECUTABLE}")
+option(VAST_ENABLE_BUILDID
+       "Include a unique identifier into the elf notes section" ON)
 cmake_dependent_option(
   BUILD_SHARED_LIBS "Build shared libraries instead of static" ON
   "NOT VAST_STATIC_EXECUTABLE" OFF)
@@ -238,6 +240,10 @@ endmacro ()
 set(LDFLAGS "$ENV{LDFLAGS}")
 set(ARFLAGS "$ENV{ARFLAGS}")
 
+if (VAST_ENABLE_BUILDID)
+  string(APPEND LDFLAGS " -Wl,--build-id")
+endif ()
+
 set(CMAKE_CXX_STANDARD 17)
 
 # Build-type specific flags.