by using CXXFLAGS="$CXXFLAGS -Wno-narrowing" in configure, it solves the problem. But then, when i press make, it gives these errors: .... make[3]: Entering directory '/home/potant/Downloads/amos-3.1.0/src/Align' g++ -DHAVE_CONFIG_H -I. -I../.. -I../../src/CelMsg -I../../src/Slice -I../../src/Common -I../../src/AMOS -I../../src/GNU -I../../src/Foundation -Wno-narrowing -Wcpp -MT genome-complexity-fast.o -MD -MP -MF .deps/genome-complexity-fast.Tpo -c -o genome-complexity-fast.o genome-complexity-fast.cc...