1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
# determine the compiler to use for Objective-C++ programs
# NOTE, a generator may set CMAKE_OBJCXX_COMPILER before
# loading this file to force a compiler.
# use environment variable OBJCXX first if defined by user, next use
# the cmake variable CMAKE_GENERATOR_OBJCXX which can be defined by a generator
# as a default compiler
# If the internal cmake variable _CMAKE_TOOLCHAIN_PREFIX is set, this is used
# as prefix for the tools (e.g. arm-elf-g++, arm-elf-ar etc.)
#
# Sets the following variables:
# CMAKE_OBJCXX_COMPILER
# CMAKE_COMPILER_IS_GNUOBJCXX
# CMAKE_COMPILER_IS_CLANGOBJCXX
# CMAKE_AR
# CMAKE_RANLIB
#
# If not already set before, it also sets
# _CMAKE_TOOLCHAIN_PREFIX
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
# Load system-specific compiler preferences for this language.
include(Platform/${CMAKE_SYSTEM_NAME}-Determine-OBJCXX OPTIONAL)
include(Platform/${CMAKE_SYSTEM_NAME}-OBJCXX OPTIONAL)
if(NOT CMAKE_OBJCXX_COMPILER_NAMES)
set(CMAKE_OBJCXX_COMPILER_NAMES clang++)
endif()
if("${CMAKE_GENERATOR}" MATCHES "Xcode")
set(CMAKE_OBJCXX_COMPILER_XCODE_TYPE sourcecode.cpp.objcpp)
else()
if(NOT CMAKE_OBJCXX_COMPILER)
set(CMAKE_OBJCXX_COMPILER_INIT NOTFOUND)
# prefer the environment variable OBJCXX or CXX
foreach(var OBJCXX CXX)
if($ENV{${var}} MATCHES ".+")
get_filename_component(CMAKE_OBJCXX_COMPILER_INIT $ENV{${var}} PROGRAM PROGRAM_ARGS CMAKE_OBJCXX_FLAGS_ENV_INIT)
if(CMAKE_OBJCXX_FLAGS_ENV_INIT)
set(CMAKE_OBJCXX_COMPILER_ARG1 "${CMAKE_OBJCXX_FLAGS_ENV_INIT}" CACHE STRING "Arguments to Objective-C++ compiler")
endif()
if(NOT EXISTS ${CMAKE_OBJCXX_COMPILER_INIT})
message(FATAL_ERROR "Could not find compiler set in environment variable ${var}:\n $ENV{${var}}")
endif()
break()
endif()
endforeach()
# next prefer the generator specified compiler
if(CMAKE_GENERATOR_OBJCXX)
if(NOT CMAKE_OBJCXX_COMPILER_INIT)
set(CMAKE_OBJCXX_COMPILER_INIT ${CMAKE_GENERATOR_OBJCXX})
endif()
endif()
# finally list compilers to try
if(NOT CMAKE_OBJCXX_COMPILER_INIT)
set(CMAKE_OBJCXX_COMPILER_LIST ${_CMAKE_TOOLCHAIN_PREFIX}c++ ${_CMAKE_TOOLCHAIN_PREFIX}g++ clang++)
endif()
_cmake_find_compiler(OBJCXX)
else()
# we only get here if CMAKE_OBJCXX_COMPILER was specified using -D or a pre-made CMakeCache.txt
# (e.g. via ctest) or set in CMAKE_TOOLCHAIN_FILE
# if CMAKE_OBJCXX_COMPILER is a list, use the first item as
# CMAKE_OBJCXX_COMPILER and the rest as CMAKE_OBJCXX_COMPILER_ARG1
set(CMAKE_OBJCXX_COMPILER_ARG1 "${CMAKE_OBJCXX_COMPILER}")
list(POP_FRONT CMAKE_OBJCXX_COMPILER_ARG1 CMAKE_OBJCXX_COMPILER)
list(JOIN CMAKE_OBJCXX_COMPILER_ARG1 " " CMAKE_OBJCXX_COMPILER_ARG1)
# if a compiler was specified by the user but without path,
# now try to find it with the full path
# if it is found, force it into the cache,
# if not, don't overwrite the setting (which was given by the user) with "NOTFOUND"
# if the C compiler already had a path, reuse it for searching the CXX compiler
get_filename_component(_CMAKE_USER_OBJCXX_COMPILER_PATH "${CMAKE_OBJCXX_COMPILER}" PATH)
if(NOT _CMAKE_USER_OBJCXX_COMPILER_PATH)
find_program(CMAKE_OBJCXX_COMPILER_WITH_PATH NAMES ${CMAKE_OBJCXX_COMPILER})
if(CMAKE_OBJCXX_COMPILER_WITH_PATH)
set(CMAKE_OBJCXX_COMPILER ${CMAKE_OBJCXX_COMPILER_WITH_PATH} CACHE STRING "Objective-C++ compiler" FORCE)
endif()
unset(CMAKE_OBJCXX_COMPILER_WITH_PATH CACHE)
endif()
endif()
mark_as_advanced(CMAKE_OBJCXX_COMPILER)
# Each entry in this list is a set of extra flags to try
# adding to the compile line to see if it helps produce
# a valid identification file.
set(CMAKE_OBJCXX_COMPILER_ID_TEST_FLAGS_FIRST)
set(CMAKE_OBJCXX_COMPILER_ID_TEST_FLAGS
# Try compiling to an object file only.
"-c"
# ARMClang need target options
"--target=arm-arm-none-eabi -mcpu=cortex-m3"
)
endif()
# Build a small source file to identify the compiler.
if(NOT CMAKE_OBJCXX_COMPILER_ID_RUN)
set(CMAKE_OBJCXX_COMPILER_ID_RUN 1)
# Try to identify the compiler.
set(CMAKE_OBJCXX_COMPILER_ID)
file(READ ${CMAKE_ROOT}/Modules/CMakePlatformId.h.in
CMAKE_OBJCXX_COMPILER_ID_PLATFORM_CONTENT)
# Match the link line from xcodebuild output of the form
# Ld ...
# ...
# /path/to/cc ...CompilerIdOBJCXX/...
# to extract the compiler front-end for the language.
set(CMAKE_OBJCXX_COMPILER_ID_TOOL_MATCH_REGEX "\nLd[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]*-o[^\r\n]*CompilerIdOBJCXX/(\\./)?(CompilerIdOBJCXX.(framework|xctest)/)?CompilerIdOBJCXX[ \t\n\\\"]")
set(CMAKE_OBJCXX_COMPILER_ID_TOOL_MATCH_INDEX 2)
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
CMAKE_DETERMINE_COMPILER_ID(OBJCXX OBJCXXFLAGS CMakeOBJCXXCompilerId.mm)
# Set old compiler and platform id variables.
if(CMAKE_OBJCXX_COMPILER_ID MATCHES "GNU")
set(CMAKE_COMPILER_IS_GNUOBJCXX 1)
endif()
if(CMAKE_OBJCXX_COMPILER_ID MATCHES "Clang")
set(CMAKE_COMPILER_IS_CLANGOBJCXX 1)
endif()
endif()
if (NOT _CMAKE_TOOLCHAIN_LOCATION)
get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_OBJCXX_COMPILER}" PATH)
endif ()
# if we have a g++ cross compiler, they have usually some prefix, like
# e.g. powerpc-linux-g++, arm-elf-g++ or i586-mingw32msvc-g++ , optionally
# with a 3-component version number at the end (e.g. arm-eabi-gcc-4.5.2).
# The other tools of the toolchain usually have the same prefix
# NAME_WE cannot be used since then this test will fail for names like
# "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be
# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
if (NOT _CMAKE_TOOLCHAIN_PREFIX)
if("${CMAKE_OBJCXX_COMPILER_ID}" MATCHES "GNU|Clang|QCC")
get_filename_component(COMPILER_BASENAME "${CMAKE_OBJCXX_COMPILER}" NAME)
if (COMPILER_BASENAME MATCHES "^(.+-)(clan)?[gc]\\+\\+(-[0-9]+(\\.[0-9]+)*)?(-[^.]+)?(\\.exe)?$")
set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
set(_CMAKE_COMPILER_SUFFIX ${CMAKE_MATCH_5})
elseif("${CMAKE_OBJCXX_COMPILER_ID}" MATCHES "Clang")
if(CMAKE_OBJCXX_COMPILER_TARGET)
set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_OBJCXX_COMPILER_TARGET}-)
endif()
elseif(COMPILER_BASENAME MATCHES "QCC(\\.exe)?$")
if(CMAKE_OBJCXX_COMPILER_TARGET MATCHES "gcc_nto([a-z0-9]+_[0-9]+|[^_le]+)(le)")
set(_CMAKE_TOOLCHAIN_PREFIX nto${CMAKE_MATCH_1}-)
endif()
endif ()
# if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
# but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
endif ()
endif()
endif ()
set(_CMAKE_PROCESSING_LANGUAGE "OBJCXX")
include(CMakeFindBinUtils)
include(Compiler/${CMAKE_OBJCXX_COMPILER_ID}-FindBinUtils OPTIONAL)
unset(_CMAKE_PROCESSING_LANGUAGE)
if(CMAKE_OBJCXX_COMPILER_ARCHITECTURE_ID)
set(_SET_CMAKE_OBJCXX_COMPILER_ARCHITECTURE_ID
"set(CMAKE_OBJCXX_COMPILER_ARCHITECTURE_ID ${CMAKE_OBJCXX_COMPILER_ARCHITECTURE_ID})")
else()
set(_SET_CMAKE_OBJCXX_COMPILER_ARCHITECTURE_ID "")
endif()
if(CMAKE_OBJCXX_XCODE_ARCHS)
set(SET_CMAKE_XCODE_ARCHS
"set(CMAKE_XCODE_ARCHS \"${CMAKE_OBJCXX_XCODE_ARCHS}\")")
endif()
# configure all variables set in this file
configure_file(${CMAKE_ROOT}/Modules/CMakeOBJCXXCompiler.cmake.in
${CMAKE_PLATFORM_INFO_DIR}/CMakeOBJCXXCompiler.cmake
@ONLY
)
set(CMAKE_OBJCXX_COMPILER_ENV_VAR "OBJCXX")
|
