Mex -setup does not show gcc 4.7.3 compiler with Matlab 2013b + (ubuntu) Linux 64 bit

Question

Wouter 2013-11-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/107778-mex-setup-does-not-show-gcc-4-7-3-compiler-with-matlab-2013b-ubuntu-linux-64-bit

评论： Wouter 2013-11-28

When I run 'mex -setup' I get:

>> mex -setup
      Options files control which compiler to use, the compiler and link command
      options, and the runtime libraries to link against.
      Using the 'mexsh -setup' command selects an options file that is
      placed in /home/wouter/.matlab/R2013b and used by default for 'mexsh'. An options 
      file in the current working directory or specified on the command line 
      overrides the default options file in /home/wouter/.matlab/R2013b.
      To override the default options file, use the 'mexsh -f' command
      (see 'mexsh -help' for more information).
The options files available for mexsh are:
    1: /usr/local/MATLAB/R2013b/bin/mexopts.sh : 
        Template Options file for building MEX-files
    0: Exit with no changes
Enter the number of the compiler (0-1):

Where is my gcc compiler? When I look in /usr/bin/ the binary/executable/link of gcc is clearly there which as far as I read on the web should be located there.

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Answer 1

Walter Roberson 2013-11-27

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https://ww2.mathworks.cn/matlabcentral/answers/107778-mex-setup-does-not-show-gcc-4-7-3-compiler-with-matlab-2013b-ubuntu-linux-64-bit#answer_116538

Which gcc is it? gcc 4.7.x is what is supported in R2013b

http://www.mathworks.com/support/compilers/R2013b/index.html?sec=glnxa64

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Wouter 2013-11-27

编辑：Wouter 2013-11-27

在 MATLAB Online 中打开

Output

$ gcc --version
gcc (Ubuntu/Linaro 4.7.3-1ubuntu1) 4.7.3
Copyright (C) 2012 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.
$ which gcc
/usr/bin/gcc

PATH variable

/usr/local/texlive/2013/bin/x86_64-linux/:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/home/wouter/.local/bin

so yes "/usr/bin" is included...

When I look in mexopts.sh I see the following below. I see at line 59 something about gcc...? (Do not know if this helps?)

#
# mexopts.sh  Shell script for configuring MEX-file creation script,
#               mex.  These options were tested with the specified compiler.
#
# usage:        Do not call this file directly; it is sourced by the
#               mex shell script.  Modify only if you don't like the
#               defaults after running mex.  No spaces are allowed
#               around the '=' in the variable assignment.
#
# Note: For the version of system compiler supported with this release,
#       refer to the Supported and Compatible Compiler List at:
#       http://www.mathworks.com/support/compilers/current_release/
#
#
# SELECTION_TAGs occur in template option files and are used by MATLAB
# tools, such as mex and mbuild, to determine the purpose of the contents
# of an option file. These tags are only interpreted when preceded by '#'
# and followed by ':'.
#
#SELECTION_TAG_MEX_OPT: Template Options file for building MEX-files
#
# Copyright 1984-2011 The MathWorks, Inc.
# $Revision: 1.78.4.18 $  $Date: 2012/11/15 06:22:54 $
#----------------------------------------------------------------------------
#
    TMW_ROOT="$MATLAB"
    MFLAGS=''
    if [ "$ENTRYPOINT" = "mexLibrary" ]; then
        MLIBS="-L$TMW_ROOT/bin/$Arch -lmx -lmex -lmat -lmwservices -lut"
    else  
        MLIBS="-L$TMW_ROOT/bin/$Arch -lmx -lmex -lmat"
    fi
    case "$Arch" in
        Undetermined)
#----------------------------------------------------------------------------
# Change this line if you need to specify the location of the MATLAB
# root directory.  The script needs to know where to find utility
# routines so that it can determine the architecture; therefore, this
# assignment needs to be done while the architecture is still
# undetermined.
#----------------------------------------------------------------------------
            MATLAB="$MATLAB"
            ;;
        glnx86)
#----------------------------------------------------------------------------
echo "Error: Did not imbed 'options.sh' code"; exit 1 #imbed options.sh glnx86 12
#----------------------------------------------------------------------------
            ;;
        glnxa64)
#----------------------------------------------------------------------------
            RPATH="-Wl,-rpath-link,$TMW_ROOT/bin/$Arch"
            # StorageVersion: 1.0
            # CkeyName: GNU C
            # CkeyManufacturer: GNU
            # CkeyLanguage: C
            # CkeyVersion:
            # CkeyLinkerName: GNU ld
            # CkeyLinkerVersion:
            CC='gcc'
            CFLAGS='-ansi -D_GNU_SOURCE'
            CFLAGS="$CFLAGS  -fexceptions"
            CFLAGS="$CFLAGS -fPIC -fno-omit-frame-pointer -pthread"
            CLIBS="$RPATH $MLIBS -lm"
            COPTIMFLAGS='-O -DNDEBUG'
            CDEBUGFLAGS='-g'
            CLIBS="$CLIBS -lstdc++"
#
            # C++keyName: GNU C++
            # C++keyManufacturer: GNU
            # C++keyLanguage: C++
            # C++keyVersion:
            # C++keyLinkerName: GNU ld
            # C++keyLinkerVersion:  
            CXX='g++'
            CXXFLAGS='-ansi -D_GNU_SOURCE'
            CXXFLAGS="$CXXFLAGS -fPIC -fno-omit-frame-pointer -pthread"
            CXXLIBS="$RPATH $MLIBS -lm"
            CXXOPTIMFLAGS='-O -DNDEBUG'
            CXXDEBUGFLAGS='-g'
#
            # FortrankeyName: gfortran
            # FortrankeyManufacturer: GNU
            # FortrankeyLanguage: Fortran
            # FortrankeyVersion:
            # FortrankeyLinkerName: GNU ld
            # FortrankeyLinkerVersion:  
#
            FC='gfortran'
            FFLAGS='-fexceptions -fbackslash'
            FFLAGS="$FFLAGS -fPIC -fno-omit-frame-pointer"
            FLIBS="$RPATH $MLIBS -lm"
            FOPTIMFLAGS='-O'
            FDEBUGFLAGS='-g'
#
            LD="$COMPILER"
            LDEXTENSION='.mexa64'
            LDFLAGS="-pthread -shared -Wl,--version-script,$TMW_ROOT/extern/lib/$Arch/$MAPFILE -Wl,--no-undefined"
            LDOPTIMFLAGS='-O'
            LDDEBUGFLAGS='-g'
#
            POSTLINK_CMDS=':'
#----------------------------------------------------------------------------
            ;;
        sol64)
#----------------------------------------------------------------------------
echo "Error: Did not imbed 'options.sh' code"; exit 1 #imbed options.sh sol64 12
#----------------------------------------------------------------------------
            ;;
        mac)
#----------------------------------------------------------------------------
echo "Error: Did not imbed 'options.sh' code"; exit 1 #imbed options.sh mac 12
#----------------------------------------------------------------------------
            ;;
        maci)
#----------------------------------------------------------------------------
echo "Error: Did not imbed 'options.sh' code"; exit 1 #imbed options.sh maci 12
#----------------------------------------------------------------------------
            ;;
        maci64)
#----------------------------------------------------------------------------
            # StorageVersion: 1.0
            # CkeyName: Clang
            # CkeyManufacturer: Apple
            # CkeyLanguage: C
            # CkeyVersion:
            # CkeyLinkerName:
            # CkeyLinkerVersion:
            CC='xcrun  -sdk macosx10.7  clang'
## workaround clang defect temporarily use line below           SDKROOT='/Developer/SDKs/MacOSX10.6.sdk'
# compute SDK root on the fly
# target 10.7 
            MW_SDKROOT_TMP="find `xcode-select -print-path` -name MacOSX10.7.sdk"
      MW_SDKROOT=`$MW_SDKROOT_TMP`
            MACOSX_DEPLOYMENT_TARGET='10.7'
            ARCHS='x86_64'
            CFLAGS="-fno-common -arch $ARCHS -isysroot $MW_SDKROOT -mmacosx-version-min=$MACOSX_DEPLOYMENT_TARGET"
            CFLAGS="$CFLAGS  -fexceptions"
            CLIBS="$MLIBS"
            COPTIMFLAGS='-O2 -DNDEBUG'
            CDEBUGFLAGS='-g'
#
            CLIBS="$CLIBS -lstdc++"
            # C++keyName: Clang++
            # C++keyManufacturer: Apple
            # C++keyLanguage: C++
            # C++keyVersion:
            # C++keyLinkerName:
            # C++keyLinkerVersion:
            CXX='xcrun  -sdk macosx10.7  clang++'
            CXXFLAGS="-fno-common -fexceptions -arch $ARCHS -isysroot $MW_SDKROOT -mmacosx-version-min=$MACOSX_DEPLOYMENT_TARGET"
            CXXLIBS="$MLIBS -lstdc++"
            CXXOPTIMFLAGS='-O2 -DNDEBUG'
            CXXDEBUGFLAGS='-g'
#
            # FortrankeyName: GNU Fortran
            # FortrankeyManufacturer: GNU
            # FortrankeyLanguage: Fortran
            # FortrankeyVersion: 
            # FortrankeyLinkerName: 
            # FortrankeyLinkerVersion:
            FC='gfortran'
            FFLAGS='-fexceptions -m64 -fbackslash'
            FC_LIBDIR=`$FC -print-file-name=libgfortran.dylib 2>&1 | sed -n '1s/\/*libgfortran\.dylib//p'`
            FC_LIBDIR2=`$FC -print-file-name=libgfortranbegin.a 2>&1 | sed -n '1s/\/*libgfortranbegin\.a//p'`
            FLIBS="$MLIBS -L$FC_LIBDIR -lgfortran -L$FC_LIBDIR2 -lgfortranbegin"
            FOPTIMFLAGS='-O'
            FDEBUGFLAGS='-g'
#
            LD="$CC"
            LDEXTENSION='.mexmaci64'
            LDFLAGS="-arch $ARCHS -Wl,-syslibroot,$MW_SDKROOT -mmacosx-version-min=$MACOSX_DEPLOYMENT_TARGET"
            LDFLAGS="$LDFLAGS -bundle -Wl,-exported_symbols_list,$TMW_ROOT/extern/lib/$Arch/$MAPFILE"
            LDOPTIMFLAGS='-O'
            LDDEBUGFLAGS='-g'
#
            POSTLINK_CMDS=':'
#----------------------------------------------------------------------------
            ;;
    esac
#############################################################################
#
# Architecture independent lines:
#
#     Set and uncomment any lines which will apply to all architectures.
#
#----------------------------------------------------------------------------
#           CC="$CC"
#           CFLAGS="$CFLAGS"
#           COPTIMFLAGS="$COPTIMFLAGS"
#           CDEBUGFLAGS="$CDEBUGFLAGS"
#           CLIBS="$CLIBS"
#
#           FC="$FC"
#           FFLAGS="$FFLAGS"
#           FOPTIMFLAGS="$FOPTIMFLAGS"
#           FDEBUGFLAGS="$FDEBUGFLAGS"
#           FLIBS="$FLIBS"
#
#           LD="$LD"
#           LDFLAGS="$LDFLAGS"
#           LDOPTIMFLAGS="$LDOPTIMFLAGS"
#           LDDEBUGFLAGS="$LDDEBUGFLAGS"
#----------------------------------------------------------------------------
#############################################################################

Walter Roberson 2013-11-27

I notice that the dialog talks about selecting an options file, rather than about selecting a compiler. It appears that a proper options file has been created and selected, so you should be able to go ahead and mex files.

Wouter 2013-11-28

You are totally correct. The problem was within a toolbox that I downloaded. When installing the toolbox it was saying that 'mex -setup' was not configured correctly. Thats why I thought something was a miss.

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Mex -setup does not show gcc 4.7.3 compiler with Matlab 2013b + (ubuntu) Linux 64 bit

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