--- CMakeLists.txt.orig	2023-01-06 10:17:24 UTC
+++ CMakeLists.txt
@@ -20,7 +20,7 @@ project (libphonenumber VERSION 8.13.0)
 
 # Pick the C++ standard to compile with.
 # Abseil currently supports C++11, C++14, and C++17.
-set(CMAKE_CXX_STANDARD 11 CACHE STRING "C++ standard used to compile this project")
+set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard used to compile this project")
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
 
@@ -106,7 +106,7 @@ endif ()
 endif ()
 
 # Find all the required libraries and programs.
-find_package(absl)
+find_package(absl REQUIRED)
 
 if(NOT absl_FOUND)
   # Overide abseil install rules for subprojects
