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#*****************************************************************************
#
# DESCRIPTION: Script for build tool cmake on both unix and windows
#
#*****************************************************************************
#
# Copyright 2003-2025 by Wilson Snyder. This program is free software; you
# can redistribute it and/or modify it under the terms of either the GNU
# Lesser General Public License Version 3 or the Perl Artistic License
# Version 2.0.
# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
#
#****************************************************************************/
cmake_minimum_required(VERSION 3.15)
cmake_policy(SET CMP0091 NEW) # Use MSVC_RUNTIME_LIBRARY to select the runtime
project(
Verilator
VERSION 5.042
HOMEPAGE_URL https://verilator.org
LANGUAGES CXX
)
# Set default build type to Release if not specified
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Build type" FORCE)
endif()
option(
DEBUG_AND_RELEASE_AND_COVERAGE
"Builds both the debug and release binaries, overriding CMAKE_BUILD_TYPE. Not supported under MSBuild."
)
find_package(Python3 COMPONENTS Interpreter)
set(PYTHON3 ${Python3_EXECUTABLE})
# See also CMake built-in; CMAKE_INSTALL_PREFIX is applied by the install command.
set(CMAKE_INSTALL_DATADIR .)
include(GNUInstallDirs)
include(CMakePackageConfigHelpers)
include(CheckStructHasMember)
include(ExternalProject)
include(FindThreads)
if(NOT WIN32)
message(WARNING "CMake support on Linux/OSX is experimental.")
endif()
if(WIN32)
if(DEFINED ENV{WIN_FLEX_BISON})
set(WIN_FLEX_BISON "$ENV{WIN_FLEX_BISON}")
endif()
if(IS_DIRECTORY ${WIN_FLEX_BISON})
list(APPEND CMAKE_PREFIX_PATH ${WIN_FLEX_BISON})
else()
message(
FATAL_ERROR
"The path specified by WIN_FLEX_BISON environment variable is not an existing folder: ${WIN_FLEX_BISON}"
)
endif()
if(NOT WIN_FLEX_BISON)
message(
FATAL_ERROR
"Please install https://github.com/lexxmark/winflexbison and set WIN_FLEX_BISON environment variable. Please use install cmake target after a successful build."
)
endif()
set(CMAKE_CXX_STANDARD 20)
endif()
set(OBJCACHE "" CACHE STRING "Path for ccache, auto-detected if empty")
option(OBJCACHE_ENABLED "Compile Verilator with ccache" ON)
if(OBJCACHE_ENABLED)
if(OBJCACHE STREQUAL "")
find_program(OBJCACHE_PATH ccache)
if(OBJCACHE_PATH STREQUAL "OBJCACHE_PATH-NOTFOUND")
set(OBJCACHE_PATH "")
endif()
else()
set(OBJCACHE_PATH "${OBJCACHE}")
endif()
if(NOT OBJCACHE_PATH STREQUAL "")
execute_process(
COMMAND "${OBJCACHE_PATH}" --version
OUTPUT_VARIABLE objcache_version
)
string(REGEX MATCH "[^\n\r]+" objcache_version "${objcache_version}")
message(
STATUS
"Found ccache: ${OBJCACHE_PATH} (\"${objcache_version}\")"
)
set(CMAKE_CXX_COMPILER_LAUNCHER "${OBJCACHE_PATH}")
endif()
endif()
find_package(BISON)
find_package(FLEX)
# Build
#set_property(GLOBAL PROPERTY JOB_POOLS one_job=1)
if(DEBUG_AND_RELEASE_AND_COVERAGE)
if(CMAKE_GENERATOR MATCHES "^Visual Studio ")
error("%Error: The DEBUG_AND_RELEASE_AND_COVERAGE option is not supported in MSBuild-based builds.")
endif()
set(saved_build_type ${CMAKE_BUILD_TYPE})
set(CMAKE_BUILD_TYPE Debug)
add_subdirectory(src build-Debug)
set(CMAKE_BUILD_TYPE Release)
add_subdirectory(src build-Release)
set(CMAKE_BUILD_TYPE Coverage)
add_subdirectory(src build-Coverage)
set(CMAKE_BUILD_TYPE ${saved_build_type})
else()
add_subdirectory(src)
endif()
# Configuration and Installation
set(PACKAGE_NAME ${PROJECT_NAME})
set(PACKAGE_VERSION ${PROJECT_VERSION})
set(CXX ${CMAKE_CXX_COMPILER})
set(AR ${CMAKE_AR})
configure_file(include/verilated_config.h.in include/verilated_config.h @ONLY)
configure_file(include/verilated.mk.in include/verilated.mk @ONLY)
install(
FILES ${CMAKE_CURRENT_BINARY_DIR}/include/verilated_config.h
DESTINATION include
)
install(
FILES ${CMAKE_CURRENT_BINARY_DIR}/include/verilated.mk
DESTINATION include
)
configure_package_config_file(
verilator-config.cmake.in
verilator-config.cmake
INSTALL_DESTINATION .
)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/verilator-config.cmake DESTINATION .)
configure_package_config_file(
verilator-config-version.cmake.in
verilator-config-version.cmake
INSTALL_DESTINATION .
)
install(
FILES ${CMAKE_CURRENT_BINARY_DIR}/verilator-config-version.cmake
DESTINATION .
)
foreach(
program
verilator
verilator_gantt
verilator_ccache_report
verilator_difftree
verilator_profcfunc
verilator_includer
)
install(PROGRAMS bin/${program} TYPE BIN)
endforeach()
install(
DIRECTORY examples
TYPE DATA
FILES_MATCHING
PATTERN "examples/*/*.[chv]*"
PATTERN "examples/*/Makefile*"
PATTERN "examples/*/CMakeLists.txt"
)
install(
DIRECTORY include
TYPE DATA
FILES_MATCHING
PATTERN "include/verilated_config.h"
PATTERN "include/*.[chv]"
PATTERN "include/*.cpp"
PATTERN "include/*.vlt"
PATTERN "include/*.sv"
PATTERN "include/gtkwave/*.[chv]*"
PATTERN "include/vltstd/*.[chv]*"
)
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