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DaemonCompiler.cmake
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# Daemon BSD Source Code
# Copyright (c) 2024, Daemon Developers
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the <organization> nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
################################################################################
# Determine compiler
################################################################################
# FIXME: Force -W#pragma-messages and -Wno-error
# In case there is -Wno-#pragma-messages or -Werror in CFLAGS/CXXFLAGS
function(detect_daemon_compiler lang)
set(C_NAME "C")
set(CXX_NAME "C++")
set(C_EXT ".c")
set(CXX_EXT ".cpp")
try_compile(BUILD_RESULT
"${CMAKE_BINARY_DIR}"
"${DAEMON_DIR}/cmake/DaemonCompiler/DaemonCompiler${${lang}_EXT}"
CMAKE_FLAGS CMAKE_OSX_ARCHITECTURES=${CMAKE_OSX_ARCHITECTURES}
OUTPUT_VARIABLE BUILD_LOG
)
get_filename_component(compiler_basename "${CMAKE_${lang}_COMPILER}" NAME)
if (NOT BUILD_RESULT)
message(WARNING "Failed to build DaemonCompiler${${lang}_EXT}, relying on CMake builtin detection.")
set(compiler_name "Unknown")
else()
set(BUILD_LOG "\n${BUILD_LOG}\n")
string(REGEX REPLACE "\n[^\n]*<REPORT<" "\n" BUILD_LOG "${BUILD_LOG}")
string(REGEX REPLACE ">REPORT>[^\n]*\n" "\n" BUILD_LOG "${BUILD_LOG}")
string(REGEX REPLACE ".*\nDAEMON_COMPILER_NAME=([^\n]*)\n.*" "\\1"
compiler_name "${BUILD_LOG}")
foreach(name GCC;Clang;generic;${compiler_name})
set(compatibility_regex ".*\nDAEMON_COMPILER_${name}_COMPATIBILITY=([^\n]*)\n.*")
if ("${BUILD_LOG}" MATCHES ${compatibility_regex})
string(REGEX REPLACE ${compatibility_regex} "\\1"
compiler_${name}_compatibility "${BUILD_LOG}")
endif()
set(version_regex ".*\nDAEMON_COMPILER_${name}_VERSION=([^\n]*)\n.*")
if ("${BUILD_LOG}" MATCHES ${version_regex})
string(REGEX REPLACE ${version_regex} "\\1"
compiler_${name}_version "${BUILD_LOG}")
endif()
set(version_string_regex ".*\nDAEMON_COMPILER_${name}_VERSION_STRING=([^\n]*)\n.*")
if ("${BUILD_LOG}" MATCHES ${version_string_regex})
string(REGEX REPLACE ${version_string_regex} "\\1"
compiler_${name}_version_string "${BUILD_LOG}")
endif()
set(DAEMON_${lang}_COMPILER_${name}_VERSION
"${compiler_${name}_version}"
PARENT_SCOPE)
set(DAEMON_${lang}_COMPILER_${name}_COMPATIBILITY
"${compiler_${name}_compatibility}"
PARENT_SCOPE)
endforeach()
endif()
if (compiler_name STREQUAL "Unknown")
if (CMAKE_${lang}_COMPILER_ID)
set(compiler_name "${CMAKE_${lang}_COMPILER_ID}")
# Compiler version is done below.
else()
message(WARNING "Unknown ${${lang}_NAME} compiler")
endif()
endif()
# AOCC
if (compiler_Clang_version_string)
set(aocc_version_regex ".*CLANG: AOCC_([^ )]+).*")
if (compiler_Clang_version_string MATCHES ${aocc_version_regex})
set(compiler_name "AOCC")
string(REGEX REPLACE ${aocc_version_regex} "\\1"
compiler_AOCC_version "${compiler_Clang_version_string}")
string(REGEX REPLACE "(.*)-Build.*" "\\1"
compiler_AOCC_version "${compiler_AOCC_version}")
endif()
endif()
# Zig
if (compiler_Clang_version_string)
set(zig_version_regex ".*[(]https://github.com/ziglang/zig-bootstrap .*[)]")
if (compiler_Clang_version_string MATCHES ${zig_version_regex})
set(compiler_name "Zig")
endif()
# Parse “zig version”
execute_process(COMMAND "${CMAKE_${lang}_COMPILER}" version
OUTPUT_VARIABLE CUSTOM_${lang}_ZIG_OUTPUT
RESULT_VARIABLE CUSTOM_${lang}_ZIG_RETURN_CODE
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
if (NOT CUSTOM_${lang}_ZIG_RETURN_CODE) # Success
set(compiler_Zig_version "${CUSTOM_${lang}_ZIG_OUTPUT}")
endif()
endif()
# Compilers that use underlying Clang version as their own version.
foreach(name in AppleClang)
if (compiler_name STREQUAL "${name}")
set(compiler_${name}_version "${compiler_Clang_version}")
endif()
endforeach()
# Compilers that write the version number at the beginning of the VERSION string.
set(string_version_regex "([^ ]+).*")
foreach(name in PNaCl)
if (compiler_name STREQUAL "${name}")
if (compiler_generic_version_string)
if (compiler_generic_version_string MATCHES ${string_version_regex})
string(REGEX REPLACE ${string_version_regex} "\\1"
compiler_${name}_version "${compiler_generic_version_string}")
endif()
endif()
endif()
endforeach()
if (compiler_ARMClang_version_string)
# There is no __armclang_patchlevel__ so we should parse __armclang_version__ to get it.
if (compiler_ARMClang_version_string MATCHES ${string_version_regex})
string(REGEX REPLACE ${string_version_regex} "\\1"
compiler_ARMClang_version "${compiler_ARMClang_version_string}")
endif()
endif()
if (compiler_ICX_version)
# 20240000 becomes 2024.0.0
string(REGEX REPLACE "(....)(..)(..)" "\\1.\\2.\\3"
compiler_ICX_version "${compiler_ICX_version}")
string(REGEX REPLACE "\\.0" "."
compiler_ICX_version "${compiler_ICX_version}")
endif()
if (compiler_${compiler_name}_version)
set(compiler_version "${compiler_${compiler_name}_version}")
elseif (CMAKE_${lang}_COMPILER_VERSION)
set(compiler_version "${CMAKE_${lang}_COMPILER_VERSION}")
else()
set(compiler_version "Unknown")
message(WARNING "Unknown ${${lang}_NAME} compiler version")
endif()
set(DAEMON_${lang}_COMPILER_BASENAME "${compiler_basename}" PARENT_SCOPE)
set(DAEMON_${lang}_COMPILER_NAME "${compiler_name}" PARENT_SCOPE)
set(DAEMON_${lang}_COMPILER_VERSION "${compiler_version}" PARENT_SCOPE)
endfunction()
message(STATUS "CMake generator: ${CMAKE_GENERATOR}")
foreach(lang C;CXX)
set(C_NAME "C")
set(CXX_NAME "C++")
if (MSVC)
# Let CMake do the job, it does it very well,
# and there is probably no variant to take care about.
set(DAEMON_${lang}_COMPILER_NAME "${CMAKE_${lang}_COMPILER_ID}")
set(DAEMON_${lang}_COMPILER_VERSION "${CMAKE_${lang}_COMPILER_VERSION}")
get_filename_component(DAEMON_${lang}_COMPILER_BASENAME "${CMAKE_${lang}_COMPILER}" NAME)
else()
detect_daemon_compiler(${lang})
if (DAEMON_${lang}_COMPILER_Clang_COMPATIBILITY)
if (NOT DAEMON_${lang}_COMPILER_NAME STREQUAL "Clang")
set(DAEMON_${lang}_COMPILER_EXTENDED_VERSION
"${DAEMON_${lang}_COMPILER_VERSION}/Clang_${DAEMON_${lang}_COMPILER_Clang_VERSION}")
endif()
elseif (DAEMON_${lang}_COMPILER_GCC_COMPATIBILITY)
if (NOT DAEMON_${lang}_COMPILER_NAME STREQUAL "GCC")
# Almost all compilers on Earth pretend to be GCC compatible.
# So we first have to check it's really a GCC variant.
# Parse “<compiler> -v”
execute_process(COMMAND "${CMAKE_${lang}_COMPILER}" -v
ERROR_VARIABLE CUSTOM_${lang}_GCC_OUTPUT
RESULT_VARIABLE CUSTOM_${lang}_GCC_RETURN_CODE
OUTPUT_QUIET)
if (NOT CUSTOM_${lang}_GCC_RETURN_CODE) # Success
# The existence of this string tells us it's a GCC variant.
# The version in this string is the same as __VERSION__,
# the version of the GCC variant, not the version of the upstream
# GCC we are looking for.
if ("${CUSTOM_${lang}_GCC_OUTPUT}" MATCHES "\ngcc version ")
set(DAEMON_${lang}_COMPILER_EXTENDED_VERSION
"${DAEMON_${lang}_COMPILER_VERSION}/GCC_${DAEMON_${lang}_COMPILER_GCC_VERSION}")
endif()
endif()
endif()
endif()
endif()
if (NOT DAEMON_${lang}_COMPILER_EXTENDED_VERSION)
set(DAEMON_${lang}_COMPILER_EXTENDED_VERSION "${DAEMON_${lang}_COMPILER_VERSION}")
endif()
set(DAEMON_${lang}_COMPILER_STRING
"${DAEMON_${lang}_COMPILER_NAME}_${DAEMON_${lang}_COMPILER_EXTENDED_VERSION}:${DAEMON_${lang}_COMPILER_BASENAME}")
if (CMAKE_CXX_COMPILER_ARG1)
set(DAEMON_${lang}_COMPILER_STRING "${DAEMON_${lang}_COMPILER_STRING}:${CMAKE_CXX_COMPILER_ARG1}")
endif()
message(STATUS "Detected ${${lang}_NAME} compiler: ${DAEMON_${lang}_COMPILER_STRING}")
set(compiler_var_name "DAEMON_${lang}_COMPILER_${DAEMON_${lang}_COMPILER_NAME}")
set(${compiler_var_name} ON)
add_definitions(-D${compiler_var_name}=1)
daemon_add_buildinfo("char*" "DAEMON_${lang}_COMPILER_STRING" "\"${DAEMON_${lang}_COMPILER_STRING}\"")
endforeach()