matlab - 如何为 Matlab 提供它想要的旧 gcc 版本？

Question

在我的电脑上，我有 Ubuntu 10.10 和 gcc 4.4.4。我尝试编译一些使用 CUDA 的 mex 文件，但收到以下错误消息:

>> cns_build('hmax')
compiling...
/home/leMe/hmax/cns/source/common_dec.h(54): warning: omission of exception specification is incompatible with previous function "operator new(size_t)"
/usr/include/c++/4.4/new(91): here
/home/leMe/hmax/cns/source/common_dec.h(55): warning: omission of exception specification is incompatible with previous function "operator new[](size_t)"
/usr/include/c++/4.4/new(92): here
/home/leMe/hmax/cns/source/common_dec.h(56): warning: omission of exception specification is incompatible with previous function "operator delete(void *)"
/usr/include/c++/4.4/new(93): here
/home/leMe/hmax/cns/source/common_dec.h(57): warning: omission of exception specification is incompatible with previous function "operator delete[](void *)"
/usr/include/c++/4.4/new(94): here

Segmentation fault
CUDA preprocessing [nvcc] failed
Warning: You are using gcc version "4.4.4-14ubuntu5)".  The version
         currently supported with MEX is "4.2.3".
         For a list of currently supported compilers see: 
         http://www.mathworks.com/support/compilers/current_release/
CPU compilation successful

我假设通过将 Matlab 与 gcc 4.2.3 链接起来可以消除错误，但我不知道该怎么做。

mex -setup 给我以下选项:

1: /home/leMe/Matlab/bin/gccopts.sh : 
      Template Options file for building gcc MEX-files

  2: /home/leMe/Matlab/bin/mexopts.sh : 
      Template Options file for building MEX-files via the system ANSI compiler

Answer 1

我通过在 ~/matlab/R2009b/mexopts.sh 中更改我的 mexopts.sh 文件 解决了这个问题(根据您的 matlab 版本进行更改)

找到你的架构(对我来说是 glnxa64)，然后像这样改变它:

        ;;
    glnxa64) #<----------------------- FIND THIS
        RPATH="-Wl,-rpath-link,$TMW_ROOT/bin/$Arch"
        # StorageVersion: 1.0
        # CkeyName: GNU C
        # CkeyManufacturer: GNU
        # CkeyLanguage: C
        # CkeyVersion:
        CC='gcc-4.1' #<---------------------------------- CHANGE HERE
        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: 
        CXX='g++-4.1' #<---------------------------------- CHANGE HERE
        CXXFLAGS='-ansi -D_GNU_SOURCE'
        CXXFLAGS="$CXXFLAGS -fPIC -fno-omit-frame-pointer -pthread"
        CXXLIBS="$RPATH $MLIBS -lm"
        CXXOPTIMFLAGS='-O -DNDEBUG'
        CXXDEBUGFLAGS='-g'

PS:你还需要安装正确版本的gcc