Jit linker, mapper, obfuscator, and mutator
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include_guard()
# Change these defaults to point to your infrastructure if desired
set(CMKR_REPO "https://github.com/build-cpp/cmkr" CACHE STRING "cmkr git repository" FORCE)
set(CMKR_TAG "v0.2.12" CACHE STRING "cmkr git tag (this needs to be available forever)" FORCE)
set(CMKR_COMMIT_HASH "" CACHE STRING "cmkr git commit hash (optional)" FORCE)
# To bootstrap/generate a cmkr project: cmake -P cmkr.cmake
if(CMAKE_SCRIPT_MODE_FILE)
set(CMAKE_BINARY_DIR "${CMAKE_BINARY_DIR}/build")
set(CMAKE_CURRENT_BINARY_DIR "${CMAKE_BINARY_DIR}")
file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}")
endif()
# Set these from the command line to customize for development/debugging purposes
set(CMKR_EXECUTABLE "" CACHE FILEPATH "cmkr executable")
set(CMKR_SKIP_GENERATION OFF CACHE BOOL "skip automatic cmkr generation")
set(CMKR_BUILD_TYPE "Debug" CACHE STRING "cmkr build configuration")
mark_as_advanced(CMKR_REPO CMKR_TAG CMKR_COMMIT_HASH CMKR_EXECUTABLE CMKR_SKIP_GENERATION CMKR_BUILD_TYPE)
# Disable cmkr if generation is disabled
if(DEFINED ENV{CI} OR CMKR_SKIP_GENERATION OR CMKR_BUILD_SKIP_GENERATION)
message(STATUS "[cmkr] Skipping automatic cmkr generation")
unset(CMKR_BUILD_SKIP_GENERATION CACHE)
macro(cmkr)
endmacro()
return()
endif()
# Disable cmkr if no cmake.toml file is found
if(NOT CMAKE_SCRIPT_MODE_FILE AND NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/cmake.toml")
message(AUTHOR_WARNING "[cmkr] Not found: ${CMAKE_CURRENT_SOURCE_DIR}/cmake.toml")
macro(cmkr)
endmacro()
return()
endif()
# Convert a Windows native path to CMake path
if(CMKR_EXECUTABLE MATCHES "\\\\")
string(REPLACE "\\" "/" CMKR_EXECUTABLE_CMAKE "${CMKR_EXECUTABLE}")
set(CMKR_EXECUTABLE "${CMKR_EXECUTABLE_CMAKE}" CACHE FILEPATH "" FORCE)
unset(CMKR_EXECUTABLE_CMAKE)
endif()
# Helper macro to execute a process (COMMAND_ERROR_IS_FATAL ANY is 3.19 and higher)
function(cmkr_exec)
execute_process(COMMAND ${ARGV} RESULT_VARIABLE CMKR_EXEC_RESULT)
if(NOT CMKR_EXEC_RESULT EQUAL 0)
message(FATAL_ERROR "cmkr_exec(${ARGV}) failed (exit code ${CMKR_EXEC_RESULT})")
endif()
endfunction()
# Windows-specific hack (CMAKE_EXECUTABLE_PREFIX is not set at the moment)
if(WIN32)
set(CMKR_EXECUTABLE_NAME "cmkr.exe")
else()
set(CMKR_EXECUTABLE_NAME "cmkr")
endif()
# Use cached cmkr if found
if(DEFINED ENV{CMKR_CACHE} AND EXISTS "$ENV{CMKR_CACHE}")
set(CMKR_DIRECTORY_PREFIX "$ENV{CMKR_CACHE}")
string(REPLACE "\\" "/" CMKR_DIRECTORY_PREFIX "${CMKR_DIRECTORY_PREFIX}")
if(NOT CMKR_DIRECTORY_PREFIX MATCHES "\\/$")
set(CMKR_DIRECTORY_PREFIX "${CMKR_DIRECTORY_PREFIX}/")
endif()
# Build in release mode for the cache
set(CMKR_BUILD_TYPE "Release")
else()
set(CMKR_DIRECTORY_PREFIX "${CMAKE_CURRENT_BINARY_DIR}/_cmkr_")
endif()
set(CMKR_DIRECTORY "${CMKR_DIRECTORY_PREFIX}${CMKR_TAG}")
set(CMKR_CACHED_EXECUTABLE "${CMKR_DIRECTORY}/bin/${CMKR_EXECUTABLE_NAME}")
# Handle upgrading logic
if(CMKR_EXECUTABLE AND NOT CMKR_CACHED_EXECUTABLE STREQUAL CMKR_EXECUTABLE)
if(CMKR_EXECUTABLE MATCHES "^${CMAKE_CURRENT_BINARY_DIR}/_cmkr")
if(DEFINED ENV{CMKR_CACHE} AND EXISTS "$ENV{CMKR_CACHE}")
message(AUTHOR_WARNING "[cmkr] Switching to cached cmkr: '${CMKR_CACHED_EXECUTABLE}'")
if(EXISTS "${CMKR_CACHED_EXECUTABLE}")
set(CMKR_EXECUTABLE "${CMKR_CACHED_EXECUTABLE}" CACHE FILEPATH "Full path to cmkr executable" FORCE)
else()
unset(CMKR_EXECUTABLE CACHE)
endif()
else()
message(AUTHOR_WARNING "[cmkr] Upgrading '${CMKR_EXECUTABLE}' to '${CMKR_CACHED_EXECUTABLE}'")
unset(CMKR_EXECUTABLE CACHE)
endif()
elseif(DEFINED ENV{CMKR_CACHE} AND EXISTS "$ENV{CMKR_CACHE}" AND CMKR_EXECUTABLE MATCHES "^${CMKR_DIRECTORY_PREFIX}")
message(AUTHOR_WARNING "[cmkr] Upgrading cached '${CMKR_EXECUTABLE}' to '${CMKR_CACHED_EXECUTABLE}'")
unset(CMKR_EXECUTABLE CACHE)
endif()
endif()
if(CMKR_EXECUTABLE AND EXISTS "${CMKR_EXECUTABLE}")
message(VERBOSE "[cmkr] Found cmkr: '${CMKR_EXECUTABLE}'")
elseif(CMKR_EXECUTABLE AND NOT CMKR_EXECUTABLE STREQUAL CMKR_CACHED_EXECUTABLE)
message(FATAL_ERROR "[cmkr] '${CMKR_EXECUTABLE}' not found")
elseif(NOT CMKR_EXECUTABLE AND EXISTS "${CMKR_CACHED_EXECUTABLE}")
set(CMKR_EXECUTABLE "${CMKR_CACHED_EXECUTABLE}" CACHE FILEPATH "Full path to cmkr executable" FORCE)
message(STATUS "[cmkr] Found cached cmkr: '${CMKR_EXECUTABLE}'")
else()
set(CMKR_EXECUTABLE "${CMKR_CACHED_EXECUTABLE}" CACHE FILEPATH "Full path to cmkr executable" FORCE)
message(VERBOSE "[cmkr] Bootstrapping '${CMKR_EXECUTABLE}'")
message(STATUS "[cmkr] Fetching cmkr...")
if(EXISTS "${CMKR_DIRECTORY}")
cmkr_exec("${CMAKE_COMMAND}" -E rm -rf "${CMKR_DIRECTORY}")
endif()
find_package(Git QUIET REQUIRED)
cmkr_exec("${GIT_EXECUTABLE}"
clone
--config advice.detachedHead=false
--branch ${CMKR_TAG}
--depth 1
${CMKR_REPO}
"${CMKR_DIRECTORY}"
)
if(CMKR_COMMIT_HASH)
execute_process(
COMMAND "${GIT_EXECUTABLE}" checkout -q "${CMKR_COMMIT_HASH}"
RESULT_VARIABLE CMKR_EXEC_RESULT
WORKING_DIRECTORY "${CMKR_DIRECTORY}"
)
if(NOT CMKR_EXEC_RESULT EQUAL 0)
message(FATAL_ERROR "Tag '${CMKR_TAG}' hash is not '${CMKR_COMMIT_HASH}'")
endif()
endif()
message(STATUS "[cmkr] Building cmkr (using system compiler)...")
cmkr_exec("${CMAKE_COMMAND}"
--no-warn-unused-cli
"${CMKR_DIRECTORY}"
"-B${CMKR_DIRECTORY}/build"
"-DCMAKE_BUILD_TYPE=${CMKR_BUILD_TYPE}"
"-DCMAKE_UNITY_BUILD=ON"
"-DCMAKE_INSTALL_PREFIX=${CMKR_DIRECTORY}"
"-DCMKR_GENERATE_DOCUMENTATION=OFF"
)
cmkr_exec("${CMAKE_COMMAND}"
--build "${CMKR_DIRECTORY}/build"
--config "${CMKR_BUILD_TYPE}"
--parallel
)
cmkr_exec("${CMAKE_COMMAND}"
--install "${CMKR_DIRECTORY}/build"
--config "${CMKR_BUILD_TYPE}"
--prefix "${CMKR_DIRECTORY}"
--component cmkr
)
if(NOT EXISTS ${CMKR_EXECUTABLE})
message(FATAL_ERROR "[cmkr] Failed to bootstrap '${CMKR_EXECUTABLE}'")
endif()
cmkr_exec("${CMKR_EXECUTABLE}" version)
message(STATUS "[cmkr] Bootstrapped ${CMKR_EXECUTABLE}")
endif()
execute_process(COMMAND "${CMKR_EXECUTABLE}" version
RESULT_VARIABLE CMKR_EXEC_RESULT
)
if(NOT CMKR_EXEC_RESULT EQUAL 0)
message(FATAL_ERROR "[cmkr] Failed to get version, try clearing the cache and rebuilding")
endif()
# Use cmkr.cmake as a script
if(CMAKE_SCRIPT_MODE_FILE)
if(NOT EXISTS "${CMAKE_SOURCE_DIR}/cmake.toml")
execute_process(COMMAND "${CMKR_EXECUTABLE}" init
RESULT_VARIABLE CMKR_EXEC_RESULT
)
if(NOT CMKR_EXEC_RESULT EQUAL 0)
message(FATAL_ERROR "[cmkr] Failed to bootstrap cmkr project. Please report an issue: https://github.com/build-cpp/cmkr/issues/new")
else()
message(STATUS "[cmkr] Modify cmake.toml and then configure using: cmake -B build")
endif()
else()
execute_process(COMMAND "${CMKR_EXECUTABLE}" gen
RESULT_VARIABLE CMKR_EXEC_RESULT
)
if(NOT CMKR_EXEC_RESULT EQUAL 0)
message(FATAL_ERROR "[cmkr] Failed to generate project.")
else()
message(STATUS "[cmkr] Configure using: cmake -B build")
endif()
endif()
endif()
# This is the macro that contains black magic
macro(cmkr)
# When this macro is called from the generated file, fake some internal CMake variables
get_source_file_property(CMKR_CURRENT_LIST_FILE "${CMAKE_CURRENT_LIST_FILE}" CMKR_CURRENT_LIST_FILE)
if(CMKR_CURRENT_LIST_FILE)
set(CMAKE_CURRENT_LIST_FILE "${CMKR_CURRENT_LIST_FILE}")
get_filename_component(CMAKE_CURRENT_LIST_DIR "${CMAKE_CURRENT_LIST_FILE}" DIRECTORY)
endif()
# File-based include guard (include_guard is not documented to work)
get_source_file_property(CMKR_INCLUDE_GUARD "${CMAKE_CURRENT_LIST_FILE}" CMKR_INCLUDE_GUARD)
if(NOT CMKR_INCLUDE_GUARD)
set_source_files_properties("${CMAKE_CURRENT_LIST_FILE}" PROPERTIES CMKR_INCLUDE_GUARD TRUE)
file(SHA256 "${CMAKE_CURRENT_LIST_FILE}" CMKR_LIST_FILE_SHA256_PRE)
# Generate CMakeLists.txt
cmkr_exec("${CMKR_EXECUTABLE}" gen
WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
)
file(SHA256 "${CMAKE_CURRENT_LIST_FILE}" CMKR_LIST_FILE_SHA256_POST)
# Delete the temporary file if it was left for some reason
set(CMKR_TEMP_FILE "${CMAKE_CURRENT_SOURCE_DIR}/CMakerLists.txt")
if(EXISTS "${CMKR_TEMP_FILE}")
file(REMOVE "${CMKR_TEMP_FILE}")
endif()
if(NOT CMKR_LIST_FILE_SHA256_PRE STREQUAL CMKR_LIST_FILE_SHA256_POST)
# Copy the now-generated CMakeLists.txt to CMakerLists.txt
# This is done because you cannot include() a file you are currently in
configure_file(CMakeLists.txt "${CMKR_TEMP_FILE}" COPYONLY)
# Add the macro required for the hack at the start of the cmkr macro
set_source_files_properties("${CMKR_TEMP_FILE}" PROPERTIES
CMKR_CURRENT_LIST_FILE "${CMAKE_CURRENT_LIST_FILE}"
)
# 'Execute' the newly-generated CMakeLists.txt
include("${CMKR_TEMP_FILE}")
# Delete the generated file
file(REMOVE "${CMKR_TEMP_FILE}")
# Do not execute the rest of the original CMakeLists.txt
return()
endif()
# Resume executing the unmodified CMakeLists.txt
endif()
endmacro()