FFT-based convolution by Bruno Luong

I downloaded the code and tried to install launching the installation function from Matlab command line. But I got the following error that I am copying in the following. I verified that clang is installed on my Mac running Maverick 10.9.4 f4230:~ mauede$ which clang /usr/bin/clang

I would greatly appreciate your help. Thank you so much. Regards, Maura Monville

>> convnfft_install
-> mexopts.sh sourced from directory (DIR = $MATLAB/bin)
   FILE = /Applications/MATLAB_R2013b.app/bin/mexopts.sh
----------------------------------------------------------------
->    MATLAB                = /Applications/MATLAB_R2013b.app
->    CC                    = xcrun  -sdk macosx10.7  clang
->    CC flags:
         CFLAGS             = -fno-common -arch x86_64 -isysroot  -mmacosx-version-min=10.7  -fexceptions
         CDEBUGFLAGS        = -g
         COPTIMFLAGS        = -O2 -DNDEBUG
         CLIBS              = -L/Applications/MATLAB_R2013b.app/bin/maci64 -lmx -lmex -lmat -lstdc++
         arguments          =
->    CXX                   = xcrun  -sdk macosx10.7  clang++
->    CXX flags:
         CXXFLAGS           = -fno-common -fexceptions -arch x86_64 -isysroot  -mmacosx-version-min=10.7
         CXXDEBUGFLAGS      = -g
         CXXOPTIMFLAGS      = -O2 -DNDEBUG
         CXXLIBS            = -L/Applications/MATLAB_R2013b.app/bin/maci64 -lmx -lmex -lmat -lstdc++
         arguments          =
->    FC                    = gfortran
->    FC flags:
         FFLAGS             = -fexceptions -m64 -fbackslash
         FDEBUGFLAGS        = -g
         FOPTIMFLAGS        = -O
         FLIBS              = -L/Applications/MATLAB_R2013b.app/bin/maci64 -lmx -lmex -lmat -L -lgfortran -L -lgfortranbegin
         arguments          =
->    LD                    = xcrun -sdk macosx10.7 clang
->    Link flags:
         LDFLAGS            = -arch x86_64 -Wl,-syslibroot, -mmacosx-version-min=10.7 -bundle -Wl,-exported_symbols_list,/Applications/MATLAB_R2013b.app/extern/lib/maci64/mexFunction.map
         LDDEBUGFLAGS       = -g
         LDOPTIMFLAGS       = -O
         LDEXTENSION        = .mexmaci64
         arguments          =
->    LDCXX                 =
->    Link flags:
         LDCXXFLAGS         =
         LDCXXDEBUGFLAGS    =
         LDCXXOPTIMFLAGS    =
         LDCXXEXTENSION     =
         arguments          =
----------------------------------------------------------------

-> xcrun  -sdk macosx10.7  clang -c  -I/Applications/MATLAB_R2013b.app/extern/include -I/Applications/MATLAB_R2013b.app/simulink/include -DMATLAB_MEX_FILE -fno-common -arch x86_64 -isysroot  -mmacosx-version-min=10.7  -fexceptions  -O2 -DNDEBUG  "inplaceprod.c"

xcodebuild: error: SDK "macosx10.7" cannot be located.
xcrun: error: unable to find utility "clang", not a developer tool or in PATH

      mex: compile of ' "inplaceprod.c"' failed.

Unable to complete successfully.

Error in convnfft_install (line 17)
mex(mexopts{:},'inplaceprod.c');

[Geoff Hayes]

Maura - have you tried to build MEX-functions before or is this the first time? Have you previously run mex -setup?

Note the error

 xcodebuild: error: SDK "macosx10.7" cannot be located.

This may be due to your version of Xcode (do you know the version?) and the fact that your OS X is 10.9. This error is similar to the one found at mex,mac,xcode. Note in particular the comment made by Tim Davis on 15 Nov 2013. This may be more relevant to you since he has OS X Mavericks installed as well.

His steps seemed to be:

 - make a copy of the mexopts.sh,found in /Applications/MATLAB_R2013b.app/bin/mexopts.sh

 - edit the original file, replacing instances of 10.7 with 10.8 (not 10.9); see answer from MathWorks Support Team for where in the file to edit

 - run, from the MATLAB Command Window, *mex -setup*

 - choose the original mexopts.sh option (there will be two, one for the original and one for your copy)

 - and that is it.