[sizamil]

Hello everyone,
this is the first time I use this forum, so I hope I posted the thread at the right location.
I'm new to OpenFOAM, so please bear with me.
I was trying to compile a solver by using the wmake utility, and terminal outputted the following:


Making dependency list for source file interFoam.C
SOURCE=interFoam.C ; /usr/bin/g++ -DdarwinIntel64 -DWM_DP -arch x86_64 -fPIC --sysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 -Wall -Wextra -Wno-unused-parameter -Wold-style-cast -O2 -DNoRepository -ftemplate-depth-40 -I/Users/sizamil/OpenFOAM/OpenFOAM-1.7.x/src/transportModels -I/Users/sizamil/OpenFOAM/OpenFOAM-1.7.x/src/transportModels/incompressible/lnInclude -I/Users/sizamil/OpenFOAM/OpenFOAM-1.7.x/src/transportModels/interfaceProperties/lnInclude -I/Users/sizamil/OpenFOAM/OpenFOAM-1.7.x/src/turbulenceModels/incompressible/turbulenceModel -I/Users/sizamil/OpenFOAM/OpenFOAM-1.7.x/src/finiteVolume/lnInclude -IlnInclude -I. -I/Users/sizamil/OpenFOAM/OpenFOAM-1.7.x/src/OpenFOAM/lnInclude -I/Users/sizamil/OpenFOAM/OpenFOAM-1.7.x/src/OSspecific/POSIX/lnInclude -Ddarwin -c $SOURCE -o Make/darwinIntel64DPOpt/interFoam.o
cc1plus: error: unrecognized command line option "-fsysroot"
make: *** [Make/darwinIntel64DPOpt/interFoam.o] Error 1

now the solver that I wanted to compile was interFOAM which is already supplied with the OpenFOAM package, and the computer I'm using is a mac ( version 10.5.8), so it should theoretically work ( everything else has, so far )
can anyone tell me what the problem is ?

thank you in advance,