I am trying to use rDiff for quantifying RNA isoforms. I have a problems during compiling.

1. make

2. echo Entering /.mex

3. Entering ./mex

4. cd mex; make matlab

5. make[1]: Entering directory '/data/rDiff/mex'

6. rm -f *.o

7. g -O get_read.cpp .........................

8. make[1]: g: command not found

Here, what is the "g"?? either gcc or g++

makefile of mex's directory

all: octave octave: get_reads.mex interval_overlap.mex matlab: get_reads.mexa64 interval_overlap.mexa64

get_reads.mexa64: get_reads.cpp get_reads_direct.cpp mex_input.cpp read.cpp rm -f *.o ${RDIFF_MATLAB_MEX_PATH} -g -O get_reads.cpp get_reads_direct.cpp mex_input.cpp read.cpp -I${RDIFF_SAMTOOLS_INCLUDE_DIR} -L${RDIFF_SAMTOOLS_LIB_DIR} -lbam -lz -lcurses -I$(RDIFF_MATLAB_INCLUDE_DIR)

interval_overlap.mexa64: interval_overlap.cpp ${RDIFF_MATLAB_MEX_PATH} -g -O interval_overlap.cpp -I$(RDIFF_MATLAB_INCLUDE_DIR)

get_reads.mex: get_reads.cpp get_reads_direct.cpp mex_input.cpp read.cpp rm -f *.o ${RDIFF_OCTAVE_MKOCT} -g --mex get_reads.cpp get_reads_direct.cpp mex_input.cpp read.cpp -I${RDIFF_SAMTOOLS_INCLUDE_DIR} -L${RDIFF_SAMTOOLS_LIB_DIR} -lbam -lz -lcurses

interval_overlap.mex: interval_overlap.cpp rm -f *.o ${RDIFF_OCTAVE_MKOCT} -g --mex interval_overlap.cpp

clean:
rm -f *.o *.mexa64 *.mex