如何使用 sys/ioctl.h 将代码移植到 MinGW gcc？答案

【问题标题】：How to port code using sys/ioctl.h to MinGW gcc?如何使用 sys/ioctl.h 将代码移植到 MinGW gcc？
【发布时间】：2020-07-16 03:31:19
【问题描述】：

我的代码（https://github.com/fangq/mmc、https://github.com/fangq/mcxcl）已经在 Linux 和 Mac 上使用 gcc、在 Windows 上使用 cygwin-gcc 或 msys2-gcc 进行了开箱即用编译，但没有使用 MinGW 编译器（x86-64-mingw64-* 编译器用于cygwin64、msys2、mingw64 或 TDM-GCC 或 matlab mingw64 support (mingw64 gcc 4.9.6)），因为它抱怨它错过了一组头文件（sys/ioctl.h、ieee754.h 等），所以我在我的源代码中包含了这些头文件的副本, 并添加了-I./mingw64/include 以使它们中的大多数都可以编译

https://github.com/fangq/mmc/tree/master/src/mingw64/include

但是，在 MATLAB R2016/2018 上使用 this script 编译 matlab mex 文件时，我收到以下错误

Error using mex
mcx_utils.o: In function `mcx_progressbar':
D:/Users/fangq/Gitroot/Project/mmc/src/mcx_utils.c:1054: undefined reference to `ioctl'
collect2.exe: error: ld returned 1 exit status

我想知道为什么在 matlab 内部编译和在 matlab 外部编译是不同的。是否有可以链接到修复undefined reference to "ioctl" 错误的库？

这是在 msys2 上使用 gcc 编译时的日志：

fangq@zen:~/space/git/Project/mmc/src$ make mex
Building built/xorshift128p_rand.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/xorshift128p_rand.o  xorshift128p_rand.c
Building built/simpmesh.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/simpmesh.o  simpmesh.c
Building built/tettracing.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/tettracing.o  tettracing.c
Building built/mcx_utils.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/mcx_utils.o  mcx_utils.c
Building built/tictoc.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/tictoc.o  tictoc.c
Building built/mmc.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/mmc.o  mmc.c
Building built/cjson/cJSON.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/cjson/cJSON.o  cjson/cJSON.c
Building built/mmc_host.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/mmc_host.o  mmc_host.c
Building built/highordermesh.o
g++ -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/highordermesh.o  highordermesh.cpp
Building built/mmc_cl_utils.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/mmc_cl_utils.o  mmc_cl_utils.c
Building built/mmc_cl_host.o
cc -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -I../src -I"./mingw64/include" -o built/mmc_cl_host.o  mmc_cl_host.c
Building bin/mmc
cmd //c mex.bat   -v -f mexopts_msys2_gcc.xml COMPFLAGS='$COMPFLAGS -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT' LDFLAGS='$LDFLAGS -static -fopenmp "c:\Windows\System32\OpenCL.dll" -fopenmp'  -outdir ../mmclab mmclab.cpp -I../src -I"./mingw64/include" -output bin/mmc built/xorshift128p_rand.o built/simpmesh.o built/tettracing.o built/mcx_utils.o built/tictoc.o built/mmc.o built/cjson/cJSON.o built/mmc_host.o built/highordermesh.o built/mmc_cl_utils.o built/mmc_cl_host.o
Verbose mode is on.
... Looking for compiler 'MinGW64 Compiler (C++)' ...
... Looking for environment variable 'MW_MINGW64_LOC' ...Yes ('C:/msys64/usr/').
... Looking for file 'C:\msys64\usr\bin\g++.exe' ...Yes.
... Looking for folder 'C:\msys64\usr' ...Yes.
... Looking for environment variable 'MW_MINGW64_LOC' ...Yes ('C:/msys64/usr/').
... Executing command 'C:\msys64\usr\bin\g++ -dumpmachine' ...Yes ('x86_64-pc-msys').
Found installed compiler 'MinGW64 Compiler (C++)'.
Set PATH = C:\msys64\usr\bin;C:\Program Files\MATLAB\R2018a\extern\include\win64;C:\Program Files\MATLAB\R2018a\extern\include;C:\Program Files\MATLAB\R2018a\simulink\include;C:\Program Files\MATLAB\R2018a\lib\win64;.;C:\msys64\opt\local\bin;C:\msys64\usr\local\cuda\bin\;.;C:\msys64\pub\bin;C:\msys64\pub\pgi\linux86-64\18.4\bin;C:\msys64\mingw64\bin;C:\msys64\usr\local\bin;C:\msys64\usr\bin;C:\msys64\usr\bin;C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\msys64\usr\bin\site_perl;C:\msys64\usr\bin\vendor_perl;C:\msys64\usr\bin\core_perl;C:\msys64\usr\local\bin;C:\msys64\home\users\fangq\space\Download\MCXStudio;C;C:\Program Files\MATLAB\R2018a\bin;C:\msys64\usr\lib\gcc\x86_64-pc-msys\9.3.0\
Set INCLUDE = C:\msys64\usr\include;C:\msys64\usr\x86_64-pc-msys\include\c++;C:\msys64\usr\x86_64-pc-msys\include;C:\msys64\usr\x86_64-pc-msys\include\c++\x86_64-pc-msys;C:\msys64\usr\x86_64-pc-msys\include\c++\backward;
Set LIB = C:\msys64\usr\lib;;
Set MW_TARGET_ARCH = win64;
Set LIBPATH = C:\Program Files\MATLAB\R2018a\extern\lib\win64;
Options file details
-------------------------------------------------------------------
        Compiler location: C:\msys64\usr
        Options file: C:\msys64\home\fangq\space\git\Project\mmc\src\mexopts_msys2_gcc.xml
        CMDLINE2 : C:\msys64\usr\bin\g++ -m64 -Wl,--no-undefined -static -fopenmp "c:\Windows\System32\OpenCL.dll" -fopenmp -shared -static -s -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/exportsmexfileversion.def" C:\msys64\tmp\mex_1481040925092289_7396\mmclab.obj C:\msys64\tmp\mex_1481040925092289_7396\cpp_mexapi_version.obj "built/xorshift128p_rand.o" "built/simpmesh.o" "built/tettracing.o" "built/mcx_utils.o" "built/tictoc.o" "built/mmc.o" "built/cjson/cJSON.o" "built/mmc_host.o" "built/highordermesh.o" "built/mmc_cl_utils.o" "built/mmc_cl_host.o"  -L"C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -o C:\msys64\home\fangq\space\git\Project\mmc\mmclab\mmc.mexw64
        CXX : C:\msys64\usr\bin\g++
        COMPILER : C:\msys64\usr\bin\g++
        DEFINES : -DMATLAB_DEFAULT_RELEASE=R2017b  -DUSE_MEX_CMD   -m64 -DMATLAB_MEX_FILE
        MATLABMEX : -DMATLAB_MEX_FILE
        CFLAGS :  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -fexceptions -fno-omit-frame-pointer
        CXXFLAGS :  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -fexceptions -fno-omit-frame-pointer
        INCLUDE : -I"..\src" -I".\mingw64\include"  -I"C:\msys64\usr\usr\include" -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include"
        CXXOPTIMFLAGS : -O -DNDEBUG
        CXXDEBUGFLAGS : -g
        LDXX : C:\msys64\usr\bin\g++
        LINKER : C:\msys64\usr\bin\g++
        LDFLAGS : -m64 -Wl,--no-undefined -static -fopenmp "c:\Windows\System32\OpenCL.dll" -fopenmp
        LDTYPE : -shared -static
        LINKEXPORT : -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/mexFunction.def"
        LINKEXPORTVER : -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/exportsmexfileversion.def"
        LIBLOC : C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64
        LINKLIBS : -L"C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat
        LDOPTIMFLAGS : -s
        LDDEBUGFLAGS : -g
        OBJEXT : .obj
        LDEXT : .mexw64
        SETENV : set COMPILER=C:\msys64\usr\bin\gcc
                set CXXCOMPILER=C:\msys64\usr\bin\g++
                set COMPFLAGS=-c  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -fexceptions -fno-omit-frame-pointer -DMATLAB_DEFAULT_RELEASE=R2017b  -DUSE_MEX_CMD   -m64 -DMATLAB_MEX_FILE  -DMATLAB_MEX_FILE
                set CXXCOMPFLAGS=-c  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -DMATLAB_DEFAULT_RELEASE=R2017b  -DUSE_MEX_CMD   -m64 -DMATLAB_MEX_FILE  -DMATLAB_MEX_FILE
                set OPTIMFLAGS=-O -DNDEBUG
                set DEBUGFLAGS=-g
                set LINKER=C:\msys64\usr\bin\gcc
                set CXXLINKER=C:\msys64\usr\bin\g++
                set LINKFLAGS=-m64 -Wl,--no-undefined -static -fopenmp "c:\Windows\System32\OpenCL.dll" -fopenmp -shared -static -L"C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/mexFunction.def"
                set LINKDEBUGFLAGS=-g
                set NAME_OUTPUT= -o "%OUTDIR%%MEX_NAME%%MEX_EXT%"
        MINGWROOT : C:\msys64\usr
        MINGWTARGET : x86_64-pc-msys
        MATLABROOT : C:\Program Files\MATLAB\R2018a
        ARCH : win64
        SRC : "C:\msys64\home\fangq\space\git\Project\mmc\src\mmclab.cpp";"C:\Program Files\MATLAB\R2018a\extern\version\cpp_mexapi_version.cpp"
        OBJ : C:\msys64\tmp\mex_1481040925092289_7396\mmclab.obj;C:\msys64\tmp\mex_1481040925092289_7396\cpp_mexapi_version.obj
        OBJS : C:\msys64\tmp\mex_1481040925092289_7396\mmclab.obj C:\msys64\tmp\mex_1481040925092289_7396\cpp_mexapi_version.obj "built/xorshift128p_rand.o" "built/simpmesh.o" "built/tettracing.o" "built/mcx_utils.o" "built/tictoc.o" "built/mmc.o" "built/cjson/cJSON.o" "built/mmc_host.o" "built/highordermesh.o" "built/mmc_cl_utils.o" "built/mmc_cl_host.o"
        SRCROOT : C:\msys64\home\fangq\space\git\Project\mmc\src\mmclab
        DEF : C:\msys64\tmp\mex_1481040925092289_7396\mmc.def
        EXP : "C:\msys64\home\fangq\space\git\Project\mmc\mmclab\mmc.exp"
        LIB : "C:\msys64\home\fangq\space\git\Project\mmc\mmclab\mmc.lib"
        EXE : C:\msys64\home\fangq\space\git\Project\mmc\mmclab\mmc.mexw64
        ILK : "C:\msys64\home\fangq\space\git\Project\mmc\mmclab\mmc.ilk"
        MANIFEST : "C:\msys64\home\fangq\space\git\Project\mmc\mmclab\mmc.mexw64.manifest"
        TEMPNAME : C:\msys64\home\fangq\space\git\Project\mmc\mmclab\mmc
        EXEDIR : C:\msys64\home\fangq\space\git\Project\mmc\mmclab\
        EXENAME : mmc
        COMPFLAGS :  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT
        OPTIM : -O -DNDEBUG
        LINKOPTIM : -s
        CMDLINE1_0 : C:\msys64\usr\bin\g++ -c -DMATLAB_DEFAULT_RELEASE=R2017b  -DUSE_MEX_CMD   -m64 -DMATLAB_MEX_FILE  -I"..\src" -I".\mingw64\include"  -I"C:\msys64\usr\usr\include" -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include"  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -fexceptions -fno-omit-frame-pointer -O -DNDEBUG "C:\msys64\home\fangq\space\git\Project\mmc\src\mmclab.cpp" -o C:\msys64\tmp\mex_1481040925092289_7396\mmclab.obj
        CMDLINE1_1 : C:\msys64\usr\bin\g++ -c -DMATLAB_DEFAULT_RELEASE=R2017b  -DUSE_MEX_CMD   -m64 -DMATLAB_MEX_FILE  -I"..\src" -I".\mingw64\include"  -I"C:\msys64\usr\usr\include" -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include"  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -fexceptions -fno-omit-frame-pointer -O -DNDEBUG "C:\Program Files\MATLAB\R2018a\extern\version\cpp_mexapi_version.cpp" -o C:\msys64\tmp\mex_1481040925092289_7396\cpp_mexapi_version.obj
-------------------------------------------------------------------
Building with 'MinGW64 Compiler (C++)'.
Warning: You are using an unsupported version of MinGW Compiler. To install the supported version of MinGW compiler, visit https://www.mathworks.com/help/matlab/matlab_external/install-mingw-support-package.html.
 For a list of currently supported compilers see: https://www.mathworks.com/support/compilers.
C:\msys64\usr\bin\g++ -c -DMATLAB_DEFAULT_RELEASE=R2017b  -DUSE_MEX_CMD   -m64 -DMATLAB_MEX_FILE  -I"..\src" -I".\mingw64\include"  -I"C:\msys64\usr\usr\include" -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include"  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -fexceptions -fno-omit-frame-pointer -O -DNDEBUG "C:\msys64\home\fangq\space\git\Project\mmc\src\mmclab.cpp" -o C:\msys64\tmp\mex_1481040925092289_7396\mmclab.obj
C:\msys64\usr\bin\g++ -c -DMATLAB_DEFAULT_RELEASE=R2017b  -DUSE_MEX_CMD   -m64 -DMATLAB_MEX_FILE  -I"..\src" -I".\mingw64\include"  -I"C:\msys64\usr\usr\include" -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include"  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -fexceptions -fno-omit-frame-pointer -O -DNDEBUG "C:\Program Files\MATLAB\R2018a\extern\version\cpp_mexapi_version.cpp" -o C:\msys64\tmp\mex_1481040925092289_7396\cpp_mexapi_version.obj
C:\msys64\usr\bin\g++ -m64 -Wl,--no-undefined -static -fopenmp "c:\Windows\System32\OpenCL.dll" -fopenmp -shared -static -s -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/exportsmexfileversion.def" C:\msys64\tmp\mex_1481040925092289_7396\mmclab.obj C:\msys64\tmp\mex_1481040925092289_7396\cpp_mexapi_version.obj "built/xorshift128p_rand.o" "built/simpmesh.o" "built/tettracing.o" "built/mcx_utils.o" "built/tictoc.o" "built/mmc.o" "built/cjson/cJSON.o" "built/mmc_host.o" "built/highordermesh.o" "built/mmc_cl_utils.o" "built/mmc_cl_host.o"  -L"C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -o C:\msys64\home\fangq\space\git\Project\mmc\mmclab\mmc.mexw64
Recompile embedded version with '-DMATLAB_MEXCMD_RELEASE=R2017b'
C:\msys64\usr\bin\g++ -c -DMATLAB_DEFAULT_RELEASE=R2017b  -DUSE_MEX_CMD   -m64 -DMATLAB_MEX_FILE  -I"..\src" -I".\mingw64\include"  -I"C:\msys64\usr\usr\include" -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include"  -c -Wall -g -DMCX_EMBED_CL -fno-strict-aliasing -m64 -DMMC_USE_SSE -DHAVE_SSE2 -msse -msse2 -msse3 -mssse3 -msse4.1 -O3 -fopenmp   -DMCX_CONTAINER -DUSE_OS_TIMER -DUSE_OPENCL -DMMC_XORSHIFT -fexceptions -fno-omit-frame-pointer -O -DNDEBUG "C:\Program Files\MATLAB\R2018a\extern\version\cpp_mexapi_version.cpp" -o C:\msys64\tmp\mex_1481040925092289_7396\cpp_mexapi_version.obj -DMATLAB_MEXCMD_RELEASE=R2017b
C:\msys64\usr\bin\g++ -m64 -Wl,--no-undefined -static -fopenmp "c:\Windows\System32\OpenCL.dll" -fopenmp -shared -static -s -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/exportsmexfileversion.def" C:\msys64\tmp\mex_1481040925092289_7396\mmclab.obj C:\msys64\tmp\mex_1481040925092289_7396\cpp_mexapi_version.obj "built/xorshift128p_rand.o" "built/simpmesh.o" "built/tettracing.o" "built/mcx_utils.o" "built/tictoc.o" "built/mmc.o" "built/cjson/cJSON.o" "built/mmc_host.o" "built/highordermesh.o" "built/mmc_cl_utils.o" "built/mmc_cl_host.o"  -L"C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -o C:\msys64\home\fangq\space\git\Project\mmc\mmclab\mmc.mexw64
MEX completed successfully.
fangq@zen:~/space/git/Project/mmc/src$ which gcc
/usr/bin/gcc
fangq@zen:~/space/git/Project/mmc/src$ which g++
/usr/bin/g++
fangq@zen:~/space/git/Project/mmc/src$ which cc
/usr/bin/cc
fangq@zen:~/space/git/Project/mmc/src$ gcc --version
gcc (GCC) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

【问题讨论】：

这些是Posix系统中定义的函数，Windows不是这样的系统，因此没有定义它。您可以复制头文件，但系统仍然不提供这些功能。 Cygwin 有一个实现大多数 Posix 函数的库，因此您可以使用 Cygwin 编译您的代码。 MSYS 没有这样的库，因此您无法使用 MSYS 进行编译。

标签： windows matlab gcc mingw-w64 msys2

【解决方案1】：

你加入ioctl.h的原因是什么？

从其他地方复制该标题是一个坏主意。充其量它会定义不存在导致链接器错误的库的函数。

通常，您需要使用 Windows 替代方案来处理您在其他平台上执行的任何 IOCTL 工作。

我尝试在 Windows 上使用 MSYS2 删除此包含编译 MMC，并且构建成功：

patch -ulbf src/mcx_utils.c << EOF
@@ -35,3 +35,5 @@
 #include <time.h>
+#ifndef _WIN32
 #include <sys/ioctl.h>
+#endif
 #include "mcx_utils.h"
EOF
sed -i.bak -e "s/^EXTRALIB\s*+*=.*$/& -Wl,--as-needed -lwinmm/" commons/Makefile_common.mk
~/buildstatus.sh build &&
 make -Csrc CC=gcc PLATFORM=MINGW32 &&
 echo Success

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