Hello Everyone, I recently try to compile tinker molecular modeling tool in my computer, and I found the following message. I found a similar mail from mailing list archive, and so I send this email to resolve the problem that I have. $ gfortran -O3 -ffast-math -fopenmp -static -o alchemy.x alchemy.o libtinker.a libfftw3_threads.a libfftw3.a /usr/lib/gcc/x86_64-pc-cygwin/6.4.0/libgfortran.a(read.o): In function `_gfortrani_convert_real': /usr/src/debug/gcc-6.4.0-1/libgfortran/io/read.c:175:(.text$_gfortrani_convert_real+0x72): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `strtoflt128' /usr/lib/gcc/x86_64-pc-cygwin/6.4.0/libgfortran.a(read.o): In function `_gfortrani_convert_infnan': /usr/src/debug/gcc-6.4.0-1/libgfortran/io/read.c:251:(.text$_gfortrani_convert_infnan+0x4a): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `strtoflt128' collect2: error: ld returned 1 exit status Any assistance greatly appreciated. Best regards, -- Hyuntae Na