See https://github.com/termux/termux-packages/issues/15666#issuecomment-1479663622
and https://github.com/termux/termux-packages/issues/15666#issuecomment-1482340986

--- a/cmake/Codegen.cmake.orig
+++ b/cmake/Codegen.cmake
@@ -57,7 +57,7 @@
   if(MSVC)
     set(OPT_FLAG "/fp:strict ")
   else(MSVC)
-    set(OPT_FLAG "-O3 ")
+    set(OPT_FLAG "-Og ")
     if("${CMAKE_BUILD_TYPE}" MATCHES "Debug")
       set(OPT_FLAG " ")
     endif()