cmake_minimum_required(VERSION 3.29)
# TODO before requiring CMake 4.1 or later
# and/or enforcing CMP0195, please check/update
# the implementation  of `emit_swift_interface`
# in `EmitSwiftInterface.cmake`
# to ensure it keeps laying down nested swiftmodule folders

if(POLICY CMP0157 AND CMAKE_Swift_COMPILER_USE_OLD_DRIVER)
  cmake_policy(SET CMP0157 OLD)
endif()


list(APPEND CMAKE_MODULE_PATH
  "${CMAKE_SOURCE_DIR}/../cmake/modules"
  "${CMAKE_SOURCE_DIR}/../../cmake/modules")

include(SwiftProjectVersion)
project(SwiftStringProcessing
  LANGUAGES Swift C
  VERSION ${SWIFT_RUNTIME_VERSION})

if(NOT PROJECT_IS_TOP_LEVEL)
  message(FATAL_ERROR "Swift StringProcessing must build as a standalone project")
endif()

set(CMAKE_POSITION_INDEPENDENT_CODE YES)

set(${PROJECT_NAME}_SWIFTC_SOURCE_DIR
  "${PROJECT_SOURCE_DIR}/../../../"
  CACHE FILEPATH "Path to the root source directory of the Swift compiler")

find_package(SwiftCore REQUIRED)

include(GNUInstallDirs)

include(AvailabilityMacros)
include(EmitSwiftInterface)
include(InstallSwiftInterface)
include(PlatformInfo)
include(ResourceEmbedding)

option(${PROJECT_NAME}_INSTALL_NESTED_SUBDIR "Install libraries under a platform and architecture subdirectory" ON)
set(${PROJECT_NAME}_INSTALL_LIBDIR "${CMAKE_INSTALL_LIBDIR}/swift$<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:_static>$<$<BOOL:${PROJECT_NAME}_INSTALL_NESTED_SUBDIR>:/${${PROJECT_NAME}_PLATFORM_SUBDIR}/${${PROJECT_NAME}_ARCH_SUBDIR}>")
set(${PROJECT_NAME}_INSTALL_SWIFTMODULEDIR "${CMAKE_INSTALL_LIBDIR}/swift$<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:_static>$<$<BOOL:${PROJECT_NAME}_INSTALL_NESTED_SUBDIR>:/${${PROJECT_NAME}_PLATFORM_SUBDIR}>")

option(${PROJECT_NAME}_ENABLE_LIBRARY_EVOLUTION "Generate ABI resilient runtime libraries"
  ${SwiftCore_ENABLE_LIBRARY_EVOLUTION})

option(${PROJECT_NAME}_ENABLE_PRESPECIALIZATION "Enable generic metadata prespecialization"
  ${SwiftCore_ENABLE_PRESPECIALIZATION})

add_compile_options(
  $<$<COMPILE_LANGUAGE:Swift>:-explicit-module-build>
  $<$<COMPILE_LANGUAGE:Swift>:-nostdlibimport>
  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-swift-version 5>"
  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -disable-implicit-concurrency-module-import>"
  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -disable-implicit-string-processing-module-import>"
  "$<$<COMPILE_LANGUAGE:Swift>:-warn-implicit-overrides>"
  "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_LIBRARY_EVOLUTION}>,$<COMPILE_LANGUAGE:Swift>>:-enable-library-evolution>"
  "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_PRESPECIALIZATION}>,$<COMPILE_LANGUAGE:Swift>>:SHELL:-Xfrontend -prespecialize-generic-metadata>")

# LNK4049: symbol 'symbol' defined in 'filename.obj' is imported
# LNK4286: symbol 'symbol' defined in 'filename_1.obj' is imported by 'filename_2.obj'
# LNK4217: symbol 'symbol' defined in 'filename_1.obj' is imported by 'filename_2.obj' in function 'function'
#
# We cannot selectively filter the linker warnings as we do not use the MSVC
# frontned and `clang-cl` (and `clang`) currently do not support `/WX:nnnn`. As
# a compromise, treat all linker warnings as errors.
add_link_options($<$<PLATFORM_ID:Windows>:LINKER:/WX>)
# Ensure all symbols are fully resolved on Linux
add_link_options($<$<PLATFORM_ID:Linux>:LINKER:-z,defs>)

add_subdirectory(_RegexParser)
add_subdirectory(_StringProcessing)
add_subdirectory(RegexBuilder)