使用CMake的C++代码在带有clang的MacO上编译，但在Linux上会出现语法错误

我需要我的代码在Linux和MacO上都能工作。

这是我用来生成Makefiles的CMakeLists.txt文件。

cmake_minimum_required(VERSION 3.10)
# set the project name and version
project(PCATests    VERSION 0.1
DESCRIPTION "tests of the framework for building Cellular Automata"
LANGUAGES CXX)
# specify the C++ standard
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED True)
find_package(OpenMP REQUIRED)
if (${OPENMP_FOUND})
include_directories(${INCLUDE_DIRS})
endif()
include_directories(../../include ../ext)
link_directories(../../build)
# compile options
if (MSVC)
# warning level 4 and all warnings as errors
add_compile_options(/W4 /WX)
# if the compiler supports OpenMP, use the right flags
if (${OPENMP_FOUND})
add_compile_options(${OpenMP_CXX_FLAGS})
endif()
else()
# lots of warnings and all warnings as errors
add_compile_options(-Wall -Wextra -pedantic -Werror)
if (NOT CMAKE_CXX_COMPILER_ID MATCHES "GNU")
add_compile_options(-Wno-error=unused-command-line-argument)
endif()
# optimizations and debug informations
add_compile_options(-g -O3)
# if the compiler supports OpenMP, use the right flags
if (${OPENMP_FOUND})
add_compile_options(${OpenMP_CXX_FLAGS})
endif()
endif()
set(unit_test_targets
test_sequential_all
test_operators
test_library_imports
test_sequential_automaton
test_utilities
test_sequential_leaks_valgrind
test_omp_automaton
)
foreach(TARGET ${unit_test_targets})
add_executable(${TARGET} ${TARGET}.cpp)
target_link_libraries(${TARGET} parallelcellularautomata)
endforeach()

在MacO上，以下步骤有效，我得到了最终的可执行文件：

~/repos/parallel-cellular-automata/tests/unit/build$ pwd
/Users/gerardozinno/repos/parallel-cellular-automata/tests/unit/build
~/repos/parallel-cellular-automata/tests/unit/build$ cmake ..
-- The CXX compiler identification is AppleClang 11.0.0.11000033
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /Library/Developer/CommandLineTools/usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenMP_CXX: -Xclang -fopenmp (found version "3.1")
-- Found OpenMP: TRUE (found version "3.1")
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/gerardozinno/repos/parallel-cellular-automata/tests/unit/build
~/repos/parallel-cellular-automata/tests/unit/build$ make
Scanning dependencies of target test_omp_automaton
...
Scanning dependencies of target test_sequential_automaton
[  7%] Building CXX object CMakeFiles/test_sequential_leaks_valgrind.dir/test_sequential_leaks_valgrind.cpp.o
...
[100%] Built target test_sequential_all

在这个编译过程之后，我有了我的可执行文件，不会出现任何警告或错误。

同时，如果我尝试在linux Ubuntu上使用相同的命令编译相同的代码：

gerardo@newton:~/repos/parallel-cellular-automata/tests/unit/build$ pwd
/home/gerardo/repos/parallel-cellular-automata/tests/unit/build
gerardo@newton:~/repos/parallel-cellular-automata/tests/unit/build$ cmake ..
-- The CXX compiler identification is GNU 9.3.0
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenMP_CXX: -fopenmp (found version "4.5")
-- Found OpenMP: TRUE (found version "4.5")
-- Configuring done
-- Generating done
-- Build files have been written to: /home/gerardo/repos/parallel-cellular-automata/tests/unit/build
gerardo@newton:~/repos/parallel-cellular-automata/tests/unit/build$ make
Scanning dependencies of target test_omp_automaton
[  7%] Building CXX object CMakeFiles/test_omp_automaton.dir/test_omp_automaton.cpp.o

我开始犯这样的错误。

对于每个For循环，我都会得到这个错误：

In file included from /home/gerardo/repos/parallel-cellular-automata/tests/unit/../../include/cellular_automata.hpp:6,
from /home/gerardo/repos/parallel-cellular-automata/tests/unit/test_omp_automaton.cpp:7:
/home/gerardo/repos/parallel-cellular-automata/tests/unit/../../include/omp_automaton.hpp: In member function ‘virtual void ca::omp::CellularAutomaton<T>::sim
ulate(unsigned int)’:
/home/gerardo/repos/parallel-cellular-automata/tests/unit/../../include/omp_automaton.hpp:93:22: error: expected ‘=’ before ‘{’ token
93 |         for (size_t i{0}; i < rows; ++i)

说在"｛"之前应为"="，以及以下我从未遇到过的错误：

/home/gerardo/repos/parallel-cellular-automata/tests/unit/../../include/omp_automaton.hpp:93:9: error: use of local variable with automatic storage from conta
ining function
93 |         for (size_t i{0}; i < rows; ++i)
|         ^~~
/home/gerardo/repos/parallel-cellular-automata/tests/unit/../../include/omp_automaton.hpp:93:21: note: ‘size_t i’ declared here
93 |         for (size_t i{0}; i < rows; ++i)
|                     ^

表示使用具有来自包含函数的自动存储的局部变量。

怎么可能在MacOs上一切都很好，而在linux上我会出现错误？我该如何解决这些问题？我可以发誓，代码过去在linux上运行得很好，我认为在我包含之后，它就开始不编译了

if (NOT CMAKE_CXX_COMPILER_ID MATCHES "GNU")
add_compile_options(-Wno-error=unused-command-line-argument)
endif()

在CMakeLists.txt中，但现在即使我注释了这一行，代码也不起作用。

所使用的编译器显示在cmake输出的第一行中。

我还在另一台linux机器上尝试了这些代码，结果也出现了同样的错误。