CMakeLists.txt

cmake_minimum_required(VERSION 3.31.6 FATAL_ERROR)

project(DataStructuresAlgorithms CXX)

set(CMAKE_CXX_STANDARD 26)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# ###############################################################################
# Build options. CMakePresets.json sets these per preset; the defaults keep the
# behaviour of a plain `cmake -S . -B build`.
# ###############################################################################
option(ENABLE_SANITIZERS "GCC: build with AddressSanitizer, UndefinedBehaviorSanitizer and LeakSanitizer" ON)
set(DSA_OUTPUT_DIR "${CMAKE_SOURCE_DIR}" CACHE PATH "Binaries are written to <DSA_OUTPUT_DIR>/<Config>")

# Only set a default for single-config generators, leaving multi-config alone
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
    set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Choose the type of build." FORCE)
endif()

# ###############################################################################
# Global compiler options
# https://stackoverflow.com/questions/79444534/vscode-cmake-configure-does-not-generate-cmakecache-txt-from-cmakelists-txt
# CMAKE_CXX_COMPILER_ID is set only at the project() call, when CMake actually detect compilers.
# ###############################################################################
if(MSVC)
    # remove default flags provided with CMake for MSVC
    set(CMAKE_CXX_FLAGS "")
    set(CMAKE_CXX_FLAGS_DEBUG "")
    set(CMAKE_CXX_FLAGS_RELEASE "")
elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
    message("-- Setting GNU options from CMakeLists.txt (ENABLE_SANITIZERS=${ENABLE_SANITIZERS})")

    # The sanitizers are a choice made by the presets (see CMakePresets.json) or with -DENABLE_SANITIZERS=ON|OFF.
    # Add -static-libasan to SANITIZER_FLAGS to link the ASan runtime statically.
    set(SANITIZER_FLAGS "")

    if(ENABLE_SANITIZERS)
        set(SANITIZER_FLAGS " -fsanitize=address,undefined,leak")
    endif()

    set(CMAKE_CXX_FLAGS "-std=gnu++26 -fdiagnostics-color=always${SANITIZER_FLAGS} -Wall -Wextra -Wfatal-errors" CACHE STRING "CXX build flags" FORCE)
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS} -ggdb3 -O0 -g3" CACHE STRING "Debug build flags" FORCE)

    # set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS} -ggdb3 -O0 -g3" CACHE STRING "Debug build flags" FORCE)
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS} -O3 -DNDEBUG" CACHE STRING "Release build flags" FORCE)
endif()

# ###############################################################################
# Set target arch type if empty. Visual studio solution generator provides it.
# ###############################################################################
if(NOT CMAKE_VS_PLATFORM_NAME)
    set(CMAKE_VS_PLATFORM_NAME "x64")
endif()

message("${CMAKE_VS_PLATFORM_NAME} architecture in use")

if(NOT("${CMAKE_VS_PLATFORM_NAME}" STREQUAL "Win32"
    OR "${CMAKE_VS_PLATFORM_NAME}" STREQUAL "x64"))
    message(FATAL_ERROR "${CMAKE_VS_PLATFORM_NAME} arch is not supported!")
endif()

# ###############################################################################
# Global configuration types
# ###############################################################################
set(CMAKE_CONFIGURATION_TYPES
    "Debug"
    "Release"
    CACHE STRING "Configuration" FORCE
)

# ###############################################################################
# Global linker options
# ###############################################################################
if(MSVC)
    # remove default flags provided with CMake for MSVC
    set(CMAKE_EXE_LINKER_FLAGS "")
    set(CMAKE_MODULE_LINKER_FLAGS "")
    set(CMAKE_SHARED_LINKER_FLAGS "")
    set(CMAKE_STATIC_LINKER_FLAGS "")
    set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS}")
    set(CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS}")
    set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS}")
    set(CMAKE_STATIC_LINKER_FLAGS_DEBUG "${CMAKE_STATIC_LINKER_FLAGS}")
    set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS}")
    set(CMAKE_MODULE_LINKER_FLAGS_RELEASE "${CMAKE_MODULE_LINKER_FLAGS}")
    set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS}")
    set(CMAKE_STATIC_LINKER_FLAGS_RELEASE "${CMAKE_STATIC_LINKER_FLAGS}")
endif()

# ###############################################################################
# Nuget packages function stub.
# ###############################################################################
function(use_package TARGET PACKAGE VERSION)
    message(WARNING "No implementation of use_package. Create yours. "
        "Package \"${PACKAGE}\" with version \"${VERSION}\" "
        "for target \"${TARGET}\" is ignored!")
endfunction()

# ###############################################################################
# Common utils
# ###############################################################################
include(CMake/Utils.cmake)

# ###############################################################################
# Additional Global Settings(add specific info there)
# ###############################################################################
include(CMake/GlobalSettingsInclude.cmake OPTIONAL)
include(CTest)
enable_testing()

# ###############################################################################
# Use solution folders feature
# ###############################################################################
set_property(GLOBAL PROPERTY USE_FOLDERS ON)

# set(BUILD_STATIC_LIBS ON)

# ###############################################################################
# Sub-projects
# ###############################################################################
if(NOT "${CMAKE_CXX_FLAGS}" MATCHES "-fsanitize")
    # LTO together with ASan is what caused the false global-buffer-overflow, so I'd keep the check.
    set(CMAKE_INTERPROCEDURAL_OPTIMIZATION_RELEASE ON)
endif()

add_subdirectory(Console)
add_subdirectory(src)
add_subdirectory(test)