user@ubuntu15:~/jbigkit-2.1/libjbig$ sudo make clean
rm -f *.o *.gcda *.gcno *.gcov *.plist *~ core gmon.out dbg_d\=??.pbm
rm -f t82test.pbm
rm -f tstcodec tstcodec85

user@ubuntu15:~/jbigkit-2.1/libjbig$ make
gcc -g -O -W -Wall -ansi -pedantic    -c -o jbig.o jbig.c
gcc -g -O -W -Wall -ansi -pedantic    -c -o jbig_ar.o jbig_ar.c
rm -f libjbig.a
ar rc libjbig.a jbig.o jbig_ar.o
ranlib libjbig.a
gcc -g -O -W -Wall -ansi -pedantic    -c -o jbig85.o jbig85.c
rm -f libjbig85.a
ar rc libjbig85.a jbig85.o jbig_ar.o
ranlib libjbig85.a
gcc -g -O -W -Wall -ansi -pedantic    -c -o tstcodec.o tstcodec.c
gcc -g -O -W -Wall -ansi -pedantic  -o tstcodec tstcodec.o jbig.o jbig_ar.o
gcc -g -O -W -Wall -ansi -pedantic    -c -o tstcodec85.o tstcodec85.c
gcc -g -O -W -Wall -ansi -pedantic  -o tstcodec85 tstcodec85.o jbig85.o jbig_ar.o

user@ubuntu15:~/jbigkit-2.1/libjbig$ make
make: Nothing to be done for 'all'.