set(PROJECT_CXX_FLAGS "--std=c++20")

add_definitions(${PROJECT_CXX_FLAGS})
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED True)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE INTERNAL "")

#include(cmake/FindSphinx.cmake)

add_subdirectory(ex1)
add_subdirectory(ex2)
add_subdirectory(ex3)

# ----------------------------------------------------------------
# make standard directories for std:: includes explicit
# so that
# (1) they appear in compile_commands.json.
# (2) clangd (run from emacs lsp-mode) can find them
#
if(CMAKE_EXPORT_COMPILE_COMMANDS)
  set(CMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES
      ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES})
endif()