--- s2geometry-0.11.1.orig/CMakeLists.txt	2024-02-16 20:39:34.592739300 +0300
+++ s2geometry-0.11.1/CMakeLists.txt	2024-02-16 20:39:50.050644200 +0300
@@ -229,6 +229,10 @@
     absl::utility
     ${CMAKE_THREAD_LIBS_INIT})
 
+target_compile_definitions(
+    s2 PUBLIC
+    _USE_MATH_DEFINES)
+
 if (GOOGLETEST_ROOT)
   target_link_libraries(
       s2testing
