当前 Embarcadero 版本的 C++ Builder (10.2.3) 配备了 Clang 32 位和 64 位 C/C++ 编译器。Clang 版本声称为 3.3 (http://docwiki.embarcadero.com/RADStudio/Tokyo/en/Win32_Clang-enhanced_Compilers)。
我正在研究使用这些编译器和 CMake 编译 VTK 8.0 和其他库。
然而,随 CMake 一起提供的“系统”CMake 文件(Windows-Embarcadero.cmake)未针对 Clang 进行配置,而是旧的 bcc32 编译器。
Embarcadero 建议将其分发的“Windows-Embarcadero.cmake”文件 (http://docwiki.embarcadero.com/RADStudio/Tokyo/en/Using_CMake_with_C%2B%2B_Builder) 复制到 CMake 的 Modules/Platform 文件夹中,并覆盖 CMake 附带的 Windows-Embarcadero.cmake 文件。我使用的是 CMake 3.10。
然而,遵循 Embarcadero 的建议并不能成功编译许多东西。此外,新的 .cmake 文件不仅不能正常工作,还会破坏对旧的 bcc32 编译器的支持(!)。
使用 bcc32x (clang32) 编译器使用 CMake 配置 VTK8 源时的第一个错误为:
深入研究第586行的CMake/vtkModuleMacros可以看到错误发生的地方:
这可能表明Embarcadero提供的CMake文件不完整/正确。Embarcadero的CMake文件如下所示:
我正在研究使用这些编译器和 CMake 编译 VTK 8.0 和其他库。
然而,随 CMake 一起提供的“系统”CMake 文件(Windows-Embarcadero.cmake)未针对 Clang 进行配置,而是旧的 bcc32 编译器。
Embarcadero 建议将其分发的“Windows-Embarcadero.cmake”文件 (http://docwiki.embarcadero.com/RADStudio/Tokyo/en/Using_CMake_with_C%2B%2B_Builder) 复制到 CMake 的 Modules/Platform 文件夹中,并覆盖 CMake 附带的 Windows-Embarcadero.cmake 文件。我使用的是 CMake 3.10。
然而,遵循 Embarcadero 的建议并不能成功编译许多东西。此外,新的 .cmake 文件不仅不能正常工作,还会破坏对旧的 bcc32 编译器的支持(!)。
使用 bcc32x (clang32) 编译器使用 CMake 配置 VTK8 源时的第一个错误为:
CMake Error at CMake/vtkModuleMacros.cmake:586 (target_compile_features):
target_compile_features no known features for CXX compiler
"Embarcadero"
version 7.30.36015.
Call Stack (most recent call first):
CMake/vtkModuleMacros.cmake:660 (vtk_add_library)
Common/Core/CMakeLists.txt:399 (vtk_module_library)
深入研究第586行的CMake/vtkModuleMacros可以看到错误发生的地方:
function(vtk_add_library name)
add_library(${name} ${ARGN} ${headers})
# We use compile features to specify that VTK requires C++11.
# We request a series of C++11 features that will conform to VTK's
# desired minimum requirements.
# - cxx_override enforces Intel 14+, and GCC 4.7+
# - cxx_nullptr as this a hard requirement for all compiler
# CMake 3.8+ introduces the concept of meta language compiler features, and
# also introduces the first compilers that are only meta language feature
# aware. So if we have CMake 3.8+ we will also set the meta feature as
# a private flag ( private so we don't force consumers to also use 3.8+ )
if(NOT VTK_IGNORE_CMAKE_CXX11_CHECKS)
target_compile_features(${name} PUBLIC cxx_nullptr cxx_override) **This is line 586**
if(NOT CMAKE_VERSION VERSION_LESS 3.8)
target_compile_features(${name} PRIVATE cxx_std_11)
endif()
endif()
if(NOT ARGV1 STREQUAL OBJECT)
vtk_target(${name})
endif()
endfunction()
这可能表明Embarcadero提供的CMake文件不完整/正确。Embarcadero的CMake文件如下所示:
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
set(_EMBT_CPP_PREPROCESSOR "cpp32")
set(EMBT_TARGET Windows)
if(CMAKE_BASE_NAME STREQUAL "bcc32x")
set(BCC32X TRUE)
set(_EMBT_CPP_PREPROCESSOR "cpp32x")
set(CLANG_BASED TRUE)
endif()
if(CMAKE_BASE_NAME STREQUAL "bcc64")
set(BCC64 TRUE)
set(_EMBT_CPP_PREPROCESSOR "cpp64")
set(CLANG_BASED TRUE)
endif()
if(CMAKE_BASE_NAME STREQUAL "bcc32c")
set(BCC32C TRUE)
set(_EMBT_CPP_PREPROCESSOR "cpp32c")
endif()
# This module is shared by multiple languages; use include blocker.
if(__WINDOWS_EMBARCADERO)
return()
endif()
set(__WINDOWS_EMBARCADERO 1)
set(BORLAND 1)
if("${CMAKE_${_lang}_COMPILER_VERSION}" VERSION_LESS 6.30)
# Borland target type flags (bcc32 -h -t):
set(_tW "-tW") # -tW GUI App (implies -U__CONSOLE__)
set(_tC "-tWC") # -tWC Console App (implies -D__CONSOLE__=1)
set(_tD "-tWD") # -tWD Build a DLL (implies -D__DLL__=1 -D_DLL=1)
set(_tM "-tWM") # -tWM Enable threads (implies -D__MT__=1 -D_MT=1)
set(_tR "-tWR -tW-") # -tWR Use DLL runtime (implies -D_RTLDLL, and '-tW' too!!)
# Notes:
# - The flags affect linking so we pass them to the linker.
# - The flags affect preprocessing so we pass them to the compiler.
# - Since '-tWR' implies '-tW' we use '-tWR -tW-' instead.
# - Since '-tW-' disables '-tWD' we use '-tWR -tW- -tWD' for DLLs.
else()
set(EMBARCADERO 1)
set(_tC "-tC") # Target is a console application
set(_tD "-tD") # Target is a shared library
set(_tM "-tM") # Target is multi-threaded
set(_tR "-tR") # Target uses the dynamic RTL
set(_tW "-tW") # Target is a Windows application
set(_tV "-tV") # Target is a VCL application
set(_tJ "-tJ") # Target uses the Delphi Runtime
set(_tF "-tF") # Target is a FMX application
set(_tP "-tP") # Target creates a Package
set(_tU "-tU") # Target creates a Unicode
endif()
# if build type is not provided set it to debug mode
if(NOT CMAKE_BUILD_TYPE)
set (CMAKE_BUILD_TYPE DEBUG CACHE STRING "Choose the type of build, options are: DEBUG RELEASE RELWITHDEBINFO MINSIZEREL.")
endif()
# to get the latest version of Rad Studio Installed by passing _EMBT_SDK_DIR path.
macro(_embt_getbdsversion result curdir)
file(GLOB children RELATIVE ${curdir} ${curdir}/*)
set(dirlist "")
foreach(child ${children})
if(IS_DIRECTORY ${curdir}/${child})
list(APPEND dirlist ${child})
endif()
endforeach()
list(LENGTH dirlist dirlength)
set(latest_dir_index ${dirlength})
math(EXPR latest_dir_index "${latest_dir_index}-1")
list (GET dirlist ${latest_dir_index} latest_dir)
set(${result} ${latest_dir})
endmacro()
set(_EMBT_SDK_DIR "")
if(NOT "$ENV{APPDATA}" STREQUAL "")
set(_EMBT_SDK_DIR "$ENV{APPDATA}\\Embarcadero\\BDS") #have to pick up by path from %APPDATA%
string(REGEX REPLACE "\\\\" "/" _EMBT_SDK_DIR "${_EMBT_SDK_DIR}")
file(TO_CMAKE_PATH "${_EMBT_SDK_DIR}" _EMBT_SDK_DIR)
endif()
if(EXISTS ${_EMBT_SDK_DIR})
_embt_getbdsversion(LATESTVER ${_EMBT_SDK_DIR})
get_filename_component(ROOTDIR "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Embarcadero\\BDS\\${LATESTVER};RootDir]" ABSOLUTE CACHE)
string(REGEX REPLACE "\\\\" "/" ROOTDIR ${ROOTDIR})
else()
#if RAD Studio is not installed,
find_path(BIN_DIR_PATH NAMES ${CMAKE_BASE_NAME}.exe)
get_filename_component(ROOTDIR ${BIN_DIR_PATH} PATH)
endif()
include_directories(SYSTEM "${ROOTDIR}/include/windows/crtl")
include_directories(SYSTEM "${ROOTDIR}/include/windows/sdk")
include_directories(SYSTEM "${ROOTDIR}/include/windows/rtl")
include_directories(SYSTEM "${ROOTDIR}/include/dinkumware64")
if(BCC32X OR BCC32C)
if(CMAKE_BUILD_TYPE MATCHES ".*DEB.*")
set(linker_Path1 "${ROOTDIR}/lib/win32c/debug")
set(linker_Path2 "${ROOTDIR}/lib/win32/debug")
set(linker_Path3 "${ROOTDIR}/lib/win32/debug/psdk")
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path1}\"")
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path2}\"")
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path3}\"")
endif()
set(linker_Path1 "${ROOTDIR}/lib/win32c/release")
set(linker_Path2 "${ROOTDIR}/lib/win32/release")
set(linker_Path3 "${ROOTDIR}/lib/win32/release/psdk")
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path1}\"")
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path2}\"")
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path3}\"")
endif()
if(CLANG_BASED)
if(BCC32X)
set(CMAKE_C_COMPILER ${ROOTDIR}/bin/bcc32x.exe)
set(CMAKE_CXX_COMPILER ${ROOTDIR}/bin/bcc32x.exe)
endif()
if(BCC64)
if(CMAKE_BUILD_TYPE MATCHES ".*DEB.*")
set(linker_Path1 "${ROOTDIR}/lib/win64/debug")
set(linker_Path2 "${ROOTDIR}/lib/win64/debug/psdk")
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path1}\"")
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path2}\"")
endif()
set(linker_Path1 "${ROOTDIR}/lib/win64/release")
set(linker_Path2 "${ROOTDIR}/lib/win64/release/psdk")
set(CMAKE_C_COMPILER ${ROOTDIR}/bin/bcc64.exe)
set(CMAKE_CXX_COMPILER ${ROOTDIR}/bin/bcc64.exe)
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path1}\"")
set(windows_LIBRARY "${windows_LIBRARY} -L \"${linker_Path2}\"")
endif()
# Setting the Link Library Path in flag
set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS ${windows_LIBRARY})
set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS ${windows_LIBRARY})
# setting the link library flag
set(link_flags ${windows_LIBRARY})
set(CMAKE_EXE_LINKER_FLAGS ${link_flags} CACHE INTERNAL "exe link flags")
set(CMAKE_MODULE_LINKER_FLAGS ${link_flags} CACHE INTERNAL "module link flags")
set(CMAKE_SHARED_LINKER_FLAGS ${link_flags} CACHE INTERNAL "shared lnk flags")
endif()
set(_COMPILE_C "-c")
set(_COMPILE_CXX "-P -c")
set(CMAKE_LIBRARY_PATH_FLAG "-L")
set(CMAKE_LINK_LIBRARY_FLAG "")
set(CMAKE_FIND_LIBRARY_SUFFIXES "-bcc.lib" ".lib")
# uncomment these out to debug makefiles
#set(CMAKE_START_TEMP_FILE "")
#set(CMAKE_END_TEMP_FILE "")
#set(CMAKE_VERBOSE_MAKEFILE 1)
# Borland cannot handle + in the file name, so mangle object file name
set (CMAKE_MANGLE_OBJECT_FILE_NAMES "ON")
# extra flags for a win32 exe
set(CMAKE_CREATE_WIN32_EXE "${_tW}" )
# extra flags for a console app
set(CMAKE_CREATE_CONSOLE_EXE "${_tC}" )
foreach(t EXE SHARED MODULE)
string(APPEND CMAKE_${t}_LINKER_FLAGS_INIT " ${_tM} -lS:1048576 -lSc:4098 -lH:1048576 -lHc:8192 ")
string(APPEND CMAKE_${t}_LINKER_FLAGS_DEBUG_INIT " -v")
string(APPEND CMAKE_${t}_LINKER_FLAGS_RELWITHDEBINFO_INIT " -v")
endforeach()
# The Borland link tool does not support multiple concurrent
# invocations within a single working directory.
if(NOT DEFINED CMAKE_JOB_POOL_LINK)
set(CMAKE_JOB_POOL_LINK BCC32LinkPool)
get_property(_bccjp GLOBAL PROPERTY JOB_POOLS)
if(NOT _bccjp MATCHES "BCC32LinkPool=")
set_property(GLOBAL APPEND PROPERTY JOB_POOLS BCC32LinkPool=1)
endif()
unset(_bccjp)
endif()
macro(__embarcadero_language lang)
set(CMAKE_${lang}_COMPILE_OPTIONS_DLL "${_tD}" ) # Note: This variable is a ';' separated list
set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "${_tD}") # ... while this is a space separated string.
set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_INCLUDES 1)
# compile a source file into an object file
# place <DEFINES> outside the response file because Borland refuses
# to parse quotes from the response file.
set(CMAKE_${lang}_COMPILE_OBJECT
"<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -o<OBJECT> ${_COMPILE_${lang}} <SOURCE>"
)
set(CMAKE_${lang}_LINK_EXECUTABLE
"<CMAKE_${lang}_COMPILER> -o<TARGET> <LINK_FLAGS> <FLAGS> ${CMAKE_START_TEMP_FILE} <LINK_LIBRARIES> <OBJECTS>${CMAKE_END_TEMP_FILE}"
)
# place <DEFINES> outside the response file because Borland refuses
# to parse quotes from the response file.
set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE
"${_EMBT_CPP_PREPROCESSOR} <DEFINES> <INCLUDES> <FLAGS> -o<PREPROCESSED_SOURCE> ${_COMPILE_${lang}} <SOURCE>"
)
# Create a module library.
set(CMAKE_${lang}_CREATE_SHARED_MODULE
"<CMAKE_${lang}_COMPILER> ${_tD} ${CMAKE_START_TEMP_FILE}-o<TARGET> <LINK_FLAGS> <LINK_LIBRARIES> <OBJECTS>${CMAKE_END_TEMP_FILE}"
)
# Create an import library for another target.
set(CMAKE_${lang}_CREATE_IMPORT_LIBRARY
"implib -c -w <TARGET_IMPLIB> <TARGET>"
)
# Create a shared library.
# First create a module and then its import library.
set(CMAKE_${lang}_CREATE_SHARED_LIBRARY
${CMAKE_${lang}_CREATE_SHARED_MODULE}
${CMAKE_${lang}_CREATE_IMPORT_LIBRARY}
)
# create a static library
if(BCC64)
set(CMAKE_${lang}_CREATE_STATIC_LIBRARY
"tlib64 ${CMAKE_START_TEMP_FILE}/p2048 <LINK_FLAGS> /a <TARGET_QUOTED> <OBJECTS>${CMAKE_END_TEMP_FILE}"
)
else()
set(CMAKE_${lang}_CREATE_STATIC_LIBRARY
"tlib ${CMAKE_START_TEMP_FILE}/p512 <LINK_FLAGS> /a <TARGET_QUOTED> <OBJECTS>${CMAKE_END_TEMP_FILE}"
)
endif()
# Initial configuration flags.
string(APPEND CMAKE_${lang}_FLAGS_INIT " ${_tM}")
if(CLANG_BASED)
string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -O0 -v")
string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -O1 -DNDEBUG")
string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2 -DNDEBUG")
string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O3")
else()
string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -Od -v")
string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -O1 -DNDEBUG")
string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2 -DNDEBUG")
string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -Od")
set(CMAKE_${lang}_STANDARD_LIBRARIES_INIT "import32.lib")
endif()
endmacro()
macro(set_embt_target)
foreach(arg IN ITEMS ${ARGN})
if(${arg} STREQUAL "FMX")
set(CMAKE_${_lang}_FLAGS "${CMAKE_${_lang}_FLAGS} ${_tF}")
include_directories(SYSTEM "${ROOTDIR}/include/windows/fmx")
elseif(${arg} STREQUAL "VCL")
set(CMAKE_${_lang}_FLAGS "${CMAKE_${_lang}_FLAGS} ${_tV}")
include_directories(SYSTEM "${ROOTDIR}/include/windows/vcl")
elseif(${arg} STREQUAL "DR")
set(CMAKE_${_lang}_FLAGS "${CMAKE_${_lang}_FLAGS} ${_tJ}")
elseif(${arg} STREQUAL "DynamicRuntime")
set(CMAKE_${_lang}_FLAGS "${CMAKE_${_lang}_FLAGS} ${_tR}")
elseif(${arg} STREQUAL "Package")
set(CMAKE_${_lang}_FLAGS "${CMAKE_${_lang}_FLAGS} ${_tP}")
elseif(${arg} STREQUAL "Unicode")
set(CMAKE_${_lang}_FLAGS "${CMAKE_${_lang}_FLAGS} ${_tU}")
else()
message("Error in set_embt_target: unknown target specified \"${arg}\"")
endif()
endforeach()
endmacro()
有没有人知道如何配置CMake,以便能够使用这些Embarcadero修改过的Clang编译器?这对于使用这些编译器的任何人都应该是相关的。