build: Add CMake-based build system (5 of N)

CMakeLists.txt

@@ -0,0 +1,203 @@
+# Copyright (c) 2023 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+# IMPORTANT: Changes which affect binary results may not be quietly gated
+#            by CMake version.
+#
+# Debian 10 Buster, https://wiki.debian.org/LTS, EOL 2024:
+#  - CMake 3.13.4, https://packages.debian.org/buster/cmake
+#
+# Ubuntu 22.04 Jammy, https://wiki.ubuntu.com/Releases, EOL 2032:
+#  - CMake 3.22.1, https://packages.ubuntu.com/jammy/cmake
+#
+# Visual Studio 17 2022, https://visualstudio.microsoft.com:
+#  - CMake 3.24
+#
+# All policies known to the running version of CMake and introduced
+# in the 3.24 version or earlier will be set to use NEW behavior.
+# All policies introduced in later versions will be unset.
+# See: https://cmake.org/cmake/help/latest/manual/cmake-policies.7.html
+cmake_minimum_required(VERSION 3.13...3.24)
+
+project("Bitcoin Core"
+  VERSION 24.99.0
+  DESCRIPTION "Bitcoin client software"
+  HOMEPAGE_URL "https://bitcoincore.org/"
+  LANGUAGES CXX ASM
+)
+
+set(CLIENT_VERSION_IS_RELEASE "false")
+set(COPYRIGHT_YEAR "2023")
+set(COPYRIGHT_HOLDERS "The %s developers")
+set(COPYRIGHT_HOLDERS_FINAL "The ${PROJECT_NAME} developers")
+set(PACKAGE_BUGREPORT "https://github.com/bitcoin/bitcoin/issues")
+
+list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/module)
+
+# Configurable options.
+# When adding a new option, end the <help_text> with a full stop for consistency.
+include(CMakeDependentOption)
+option(BUILD_DAEMON "Build bitcoind executable." ON)
+option(ASM "Use assembly routines." ON)
+cmake_dependent_option(CXX20 "Enable compilation in C++20 mode." OFF "NOT MSVC" ON)
+option(THREADLOCAL "Enable features that depend on the C++ thread_local keyword (currently just thread names in debug logs)." ON)
+include(TristateOption)
+tristate_option(CCACHE "Use ccache for compiling." "if ccache is found." AUTO)
+tristate_option(WITH_NATPMP "Enable NAT-PMP." "if libnatpmp is found." AUTO)
+tristate_option(WITH_MINIUPNPC "Enable UPnP." "if libminiupnpc is found." AUTO)
+tristate_option(WITH_ZMQ "Enable ZMQ notifications." "if libzmq is found." AUTO)
+tristate_option(WITH_USDT
+  "Enable tracepoints for Userspace, Statically Defined Tracing."
+  "if sys/sdt.h is found."
+  AUTO
+)
+
+if(CXX20)
+  set(CMAKE_CXX_STANDARD 20)
+else()
+  set(CMAKE_CXX_STANDARD 17)
+endif()
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+set(configure_warnings)
+
+if(WIN32)
+  #[=[
+  This build system supports two ways to build binaries for Windows.
+
+  1. Building on Windows using MSVC.
+  Implementation notes:
+  - /DWIN32 and /D_WINDOWS definitions are included into the CMAKE_CXX_FLAGS_INIT
+    and CMAKE_CXX_FLAGS_INIT variables by default.
+  - A run-time library is selected using the CMAKE_MSVC_RUNTIME_LIBRARY variable.
+  - MSVC-specific options, for example, /Zc:__cplusplus, are additionally required.
+
+  2. Cross-compiling using MinGW.
+  Implementation notes:
+  - WIN32 and _WINDOWS definitions must be provided explicitly.
+  - A run-time library must be specified explicitly using _MT definition.
+  ]=]
+
+  add_compile_definitions(_WIN32_WINNT=0x0601 _WIN32_IE=0x0501 WIN32_LEAN_AND_MEAN NOMINMAX)
+
+  if(MSVC)
+    set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+    add_compile_options(/utf-8 /Zc:__cplusplus)
+  endif()
+
+  if(MINGW)
+    add_compile_definitions(WIN32 _WINDOWS _MT)
+    # We require Windows 7 (NT 6.1) or later.
+    add_link_options(-Wl,--major-subsystem-version,6 -Wl,--minor-subsystem-version,1)
+  endif()
+endif()
+
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+  add_compile_definitions(MAC_OSX)
+endif()
+
+if(CMAKE_CROSSCOMPILING AND DEPENDS_ALLOW_HOST_PACKAGES)
+  list(APPEND CMAKE_FIND_ROOT_PATH "${CMAKE_SYSTEM_PREFIX_PATH}")
+endif()
+
+include(AddThreadsIfNeeded)
+add_threads_if_needed()
+
+include(AddBoostIfNeeded)
+add_boost_if_needed()
+
+include(CheckSourceCompilesAndLinks)
+
+include(AddLibeventIfNeeded)
+add_libevent_if_needed()
+
+include(cmake/introspection.cmake)
+
+include(cmake/crc32c.cmake)
+include(cmake/leveldb.cmake)
+include(cmake/minisketch.cmake)
+include(cmake/secp256k1.cmake)
+
+include(CheckStdFilesystem)
+check_std_filesystem()
+
+include(cmake/optional.cmake)
+
+if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.14)
+  include(CheckPIESupported)
+  check_pie_supported(OUTPUT_VARIABLE check_pie_output LANGUAGES CXX)
+  if(CMAKE_CXX_LINK_PIE_SUPPORTED)
+    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+  endif()
+else()
+  check_cxx_source_links_with_flags(-fPIE "int main(){}" COMPILER_SUPPORTS_PIE)
+  if(COMPILER_SUPPORTS_PIE)
+    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+  endif()
+endif()
+
+add_subdirectory(src)
+
+message("\n")
+message("Configure summary")
+message("=================")
+message("Executables:")
+message("  bitcoind ............................ ${BUILD_DAEMON}")
+message("Optional packages:")
+message("  NAT-PMP ............................. ${WITH_NATPMP}")
+message("  UPnP ................................ ${WITH_MINIUPNPC}")
+message("  ZeroMQ .............................. ${WITH_ZMQ}")
+message("  USDT tracing ........................ ${WITH_USDT}")
+message("")
+if(CMAKE_CROSSCOMPILING)
+  set(cross_status "TRUE, for ${CMAKE_SYSTEM_NAME}, ${CMAKE_SYSTEM_PROCESSOR}")
+else()
+  set(cross_status "FALSE")
+endif()
+message("Cross compiling ....................... ${cross_status}")
+get_directory_property(definitions COMPILE_DEFINITIONS)
+string(REPLACE ";" " " definitions "${definitions}")
+message("Preprocessor defined macros ........... ${definitions}")
+message("C compiler ............................ ${CMAKE_C_COMPILER}")
+message("CFLAGS ................................ ${CMAKE_C_FLAGS}")
+message("C++ compiler .......................... ${CMAKE_CXX_COMPILER}")
+message("CXXFLAGS .............................. ${CMAKE_CXX_FLAGS}")
+get_directory_property(common_compile_options COMPILE_OPTIONS)
+string(REPLACE ";" " " common_compile_options "${common_compile_options}")
+message("Common compile options ................ ${common_compile_options}")
+get_directory_property(common_link_options LINK_OPTIONS)
+string(REPLACE ";" " " common_link_options "${common_link_options}")
+message("Common link options ................... ${common_link_options}")
+if(DEFINED CMAKE_BUILD_TYPE)
+  message("Build type:")
+  message(" - CMAKE_BUILD_TYPE ................... ${CMAKE_BUILD_TYPE}")
+  string(TOUPPER "${CMAKE_BUILD_TYPE}" build_type)
+  message(" - CFLAGS ............................. ${CMAKE_C_FLAGS_${build_type}}")
+  message(" - CXXFLAGS ........................... ${CMAKE_CXX_FLAGS_${build_type}}")
+  message(" - LDFLAGS for executables ............ ${CMAKE_EXE_LINKER_FLAGS_${build_type}}")
+  message(" - LDFLAGS for shared libraries ....... ${CMAKE_SHARED_LINKER_FLAGS_${build_type}}")
+else()
+  message("Available configurations .............. ${CMAKE_CONFIGURATION_TYPES}")
+  message("Debug configuration:")
+  message(" - CFLAGS ............................. ${CMAKE_C_FLAGS_DEBUG}")
+  message(" - CXXFLAGS ........................... ${CMAKE_CXX_FLAGS_DEBUG}")
+  message(" - LDFLAGS for executables ............ ${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
+  message(" - LDFLAGS for shared libraries ....... ${CMAKE_SHARED_LINKER_FLAGS_DEBUG}")
+  message("Release configuration:")
+  message(" - CFLAGS ............................. ${CMAKE_C_FLAGS_RELEASE}")
+  message(" - CXXFLAGS ........................... ${CMAKE_CXX_FLAGS_RELEASE}")
+  message(" - LDFLAGS for executables ............ ${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
+  message(" - LDFLAGS for shared libraries ....... ${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
+endif()
+message("Use assembly routines ................. ${ASM}")
+message("Use ccache for compiling .............. ${CCACHE}")
+message("\n")
+if(configure_warnings)
+    message("  ******\n")
+    foreach(warning IN LISTS configure_warnings)
+      message(WARNING "${warning}")
+    endforeach()
+    message("  ******\n")
+endif()