Compiling on Mac Lion about randomforest-matlab HOT 6 OPEN

try the following in the RF_Class_C folder

as fortran is needed to compile into a .o file do the following from the 
terminal (not the matlab terminal but the system terminal)

gfortran  -fpic -march=native -c src/rfsub.f -o rfsub.o

gfortran may be g77 or f77 or something else depending on how fortran is 
invoked from the command prompt

once the rfsub.o is generated (just check if its in the RF_Class_C folder )

invoke the following from matlab prompt (i am assuming that mex -setup was 
successful in finding the C compiler (gcc) or g++)

mex src/mex_ClassificationRF_train.cpp  src/classRF.cpp src/classTree.cpp 
src/rfutils.cpp src/cokus.cpp rfsub.o -o mexClassRF_train -lm -DMATLAB -O -v

and then

mex src/mex_ClassificationRF_predict.cpp  src/classRF.cpp src/classTree.cpp 
src/rfutils.cpp src/cokus.cpp rfsub.o -o mexClassRF_predict -lm -DMATLAB -O -v


that should generate the training predict mex files. Note that do comment out 
the compile_linux/compile_windows file in the tutorial file before running the 
tutorial file else it will zap the mex files.

if you get the above steps working then maybe a better source would be the svn 
source which has some bug fixes etc. The compilation steps would remain the 
same.

Thank you for a very quick reply, and happy new year. I have tried running the 
command:-

gfortran  -fpic -march=native -c src/rfsub.f -o rfsub.o

And receive the following error:-

src/rfsub.f -o rfsub.o
src/rfsub.f:0: error: bad value (native) for -march= switch
src/rfsub.f:0: error: bad value (native) for -mtune= switch

Any guidance would be greatly appreciated

Dan 

Happy new year to you too

Try this.  Remove the -march=native string in the gfortran line and rerun the 
command. Some old gcc version don't have that optimization flag

I have been able to compile the rfsub file. However another problem presents 
itself in Matlab (I m able to compile other mex files using the compiler). The 
error is:-

mex src/mex_ClassificationRF_train.cpp  src/classRF.cpp src/classTree.cpp 
src/rfutils.cpp src/cokus.cpp rfsub.o -o mexClassRF_train -lm -DMATLAB -O -v

**************************************************************************
  Warning: Neither -compatibleArrayDims nor -largeArrayDims is selected. 
           Using -compatibleArrayDims. In the future, MATLAB will require
           the use of -largeArrayDims and remove the -compatibleArrayDims
           option. For more information, see:
           http://www.mathworks.com/help/techdoc/matlab_external/bsflnue-1.html
**************************************************************************

-> mexopts.sh sourced from directory (DIR = $PREF_DIR)
   FILE = /Users/user/.matlab/R2012a/mexopts.sh
----------------------------------------------------------------
->    MATLAB                = /Applications/MATLAB_R2012a.app
->    CC                    = llvm-gcc-4.2
->    CC flags:
         CFLAGS             = -fno-common -no-cpp-precomp -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/ -mmacosx-version-min=10.5  -fexceptions
         CDEBUGFLAGS        = -g
         COPTIMFLAGS        = -O2 -DNDEBUG
         CLIBS              = -L/Applications/MATLAB_R2012a.app/bin/maci64 -lmx -lmex -lmat -lstdc++
         arguments          =  -DMATLAB -DMX_COMPAT_32
->    CXX                   = llvm-g++-4.2
->    CXX flags:
         CXXFLAGS           = -fno-common -no-cpp-precomp -fexceptions -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/ -mmacosx-version-min=10.5
         CXXDEBUGFLAGS      = -g
         CXXOPTIMFLAGS      = -O2 -DNDEBUG
         CXXLIBS            = -L/Applications/MATLAB_R2012a.app/bin/maci64 -lmx -lmex -lmat -lstdc++
         arguments          =  -DMATLAB -DMX_COMPAT_32
->    FC                    = /usr/local/bin/gfortran
->    FC flags:
         FFLAGS             = -fexceptions -m64 -fbackslash
         FDEBUGFLAGS        = -g
         FOPTIMFLAGS        = -O5 -funroll-loops -ftree-vectorize
         FLIBS              = -L/Applications/MATLAB_R2012a.app/bin/maci64 -lmx -lmex -lmat -L/usr/local/lib/ -lgfortran -L/usr/local/lib/gcc/i686-apple-darwin8/4.2.3/x86_64/ -lgfortranbegin
         arguments          =  -DMATLAB -DMX_COMPAT_32
->    LD                    = llvm-gcc-4.2
->    Link flags:
         LDFLAGS            = -Wl,-twolevel_namespace -undefined error -arch x86_64 -Wl,-syslibroot,/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/ -mmacosx-version-min=10.5 -bundle -Wl,-exported_symbols_list,/Applications/MATLAB_R2012a.app/extern/lib/maci64/mexFunction.map
         LDDEBUGFLAGS       = -g
         LDOPTIMFLAGS       = -O
         LDEXTENSION        = .mexmaci64
         arguments          =  -lm
->    LDCXX                 = 
->    Link flags:
         LDCXXFLAGS         = 
         LDCXXDEBUGFLAGS    = 
         LDCXXOPTIMFLAGS    = 
         LDCXXEXTENSION     = 
         arguments          =  -lm
----------------------------------------------------------------

-> llvm-g++-4.2 -c  -I/Applications/MATLAB_R2012a.app/extern/include 
-I/Applications/MATLAB_R2012a.app/simulink/include -DMATLAB_MEX_FILE 
-fno-common -no-cpp-precomp -fexceptions -arch x86_64 -isysroot 
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/S
DKs/MacOSX10.7.sdk/ -mmacosx-version-min=10.5  -DMATLAB -DMX_COMPAT_32 -O2 
-DNDEBUG  "src/mex_ClassificationRF_train.cpp"

-> llvm-g++-4.2 -c  -I/Applications/MATLAB_R2012a.app/extern/include 
-I/Applications/MATLAB_R2012a.app/simulink/include -DMATLAB_MEX_FILE 
-fno-common -no-cpp-precomp -fexceptions -arch x86_64 -isysroot 
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/S
DKs/MacOSX10.7.sdk/ -mmacosx-version-min=10.5  -DMATLAB -DMX_COMPAT_32 -O2 
-DNDEBUG  "src/classRF.cpp"

-> llvm-g++-4.2 -c  -I/Applications/MATLAB_R2012a.app/extern/include 
-I/Applications/MATLAB_R2012a.app/simulink/include -DMATLAB_MEX_FILE 
-fno-common -no-cpp-precomp -fexceptions -arch x86_64 -isysroot 
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/S
DKs/MacOSX10.7.sdk/ -mmacosx-version-min=10.5  -DMATLAB -DMX_COMPAT_32 -O2 
-DNDEBUG  "src/classTree.cpp"

-> llvm-g++-4.2 -c  -I/Applications/MATLAB_R2012a.app/extern/include 
-I/Applications/MATLAB_R2012a.app/simulink/include -DMATLAB_MEX_FILE 
-fno-common -no-cpp-precomp -fexceptions -arch x86_64 -isysroot 
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/S
DKs/MacOSX10.7.sdk/ -mmacosx-version-min=10.5  -DMATLAB -DMX_COMPAT_32 -O2 
-DNDEBUG  "src/rfutils.cpp"

-> llvm-g++-4.2 -c  -I/Applications/MATLAB_R2012a.app/extern/include 
-I/Applications/MATLAB_R2012a.app/simulink/include -DMATLAB_MEX_FILE 
-fno-common -no-cpp-precomp -fexceptions -arch x86_64 -isysroot 
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/S
DKs/MacOSX10.7.sdk/ -mmacosx-version-min=10.5  -DMATLAB -DMX_COMPAT_32 -O2 
-DNDEBUG  "src/cokus.cpp"

-> llvm-gcc-4.2 -O -Wl,-twolevel_namespace -undefined error -arch x86_64 
-Wl,-syslibroot,/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.plat
form/Developer/SDKs/MacOSX10.7.sdk/ -mmacosx-version-min=10.5 -bundle 
-Wl,-exported_symbols_list,/Applications/MATLAB_R2012a.app/extern/lib/maci64/mex
Function.map -o  "mexClassRF_train.mexmaci64"  mex_ClassificationRF_train.o 
classRF.o classTree.o rfutils.o cokus.o  "rfsub.o"  -lm 
-L/Applications/MATLAB_R2012a.app/bin/maci64 -lmx -lmex -lmat -lstdc++

ld: warning: ignoring file rfsub.o, file was built for i386 which is not the 
architecture being linked (x86_64): rfsub.o
Undefined symbols for architecture x86_64:
  "_buildtree_", referenced from:
      classRF(double*, int*, int*, int*, int*, int*, int*, int*, int*, int*, int*, int*, double*, double*, int*, int*, int*, double*, double*, double*, double*, int*, int*, int*, int*, int*, int*, double*, double*, int*, double*, int*, int*, double*, int*, int, double*, double*, int*)in classRF.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status

    mex: link of ' "mexClassRF_train.mexmaci64"' failed.

Error using mex (line 206)
Unable to complete successfully.

Thanks very much for your help and time

Dan

Hi Dan

looks like the fortran compiler you are using is generating 32 bit binaries 
that cannot be merged with the 64-bit binaries generated in matlab mex.

you will have to update to a fortran version that generates 64 bit binaries or 
use a 32bit matlab (the latter might not be possible because i guess mathworks 
has cancelled developing 32 bits for many architectures) maybe macports/fink 
has 64bit fortran.

After checking, I already had the correct compiler installed. I reinstalled the 
compiler and success - everything in post #1 works. Thank you very much for all 
your assistance. 

Happy new year.

Dan