CMakeLists.txt

cmake_minimum_required(VERSION 3.15...3.28)

project(re2 LANGUAGES CXX C)

option(PY_DEBUG "Set if python being linked is a Py_DEBUG build" OFF)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS ON)

if(CMAKE_CXX_COMPILER_ID STREQUAL Clang)
    set(CLANG_DEFAULT_CXX_STDLIB libc++)
    set(CLANG_DEFAULT_RTLIB compiler-rt)
endif()

if(NOT CMAKE_BUILD_TYPE)
    set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING
            "Default build type: RelWithDebInfo" FORCE)
endif()

include(GNUInstallDirs)

# get rid of FindPython old warnings, refactor FindCython module
set(CMP0148 NEW)

set(PYBIND11_FINDPYTHON ON)
find_package(pybind11 CONFIG)

if(pybind11_FOUND)
    message(STATUS "System pybind11 found")
else()
    message(STATUS "Fetching pybind11 from github")
    # Fetch pybind11
    include(FetchContent)

    FetchContent_Declare(
      pybind11
      GIT_REPOSITORY https://github.com/pybind/pybind11
      GIT_TAG v2.12.0
    )
    FetchContent_MakeAvailable(pybind11)
endif()

find_package(Threads REQUIRED)

if (${PYTHON_IS_DEBUG})
    set(PY_DEBUG ON)
endif()

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
    ${PROJECT_SOURCE_DIR}/cmake/modules/)

include_directories(${PROJECT_SOURCE_DIR}/src)

add_subdirectory(src)