flint fails to build for me with the following error unless I include as an input a newer gcc version. Greg --8<---------------cut here---------------start------------->8--- CC fmpz_poly_q/add.c In file included from src/fft_small/mpn_mul.c:17: src/fft_small/mpn_mul.c: In function ‘_mpn_from_ffts_8’: ./src/crt_helpers.h:120:3: error: ‘asm’ operand has impossible constraints 120 | __asm__ ("addq %23,%q7\nadcq %21,%q6\nadcq %19,%q5\n\tadcq %17,%q4\n\tadcq %15,%q3\n\tadcq %13,%q2\n\tadcq %11,%q1\n\tadcq %9,%q0" \ | ^~~~~~~ ./src/crt_helpers.h:378:5: note: in expansion of macro ‘add_ssssssssaaaaaaaaaaaaaaaa’ 378 | add_ssssssssaaaaaaaaaaaaaaaa(z[7],z[6],z[5],z[4],z[3],z[2],z[1],z[0], | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./src/crt_helpers.h:120:3: error: ‘asm’ operand has impossible constraints 120 | __asm__ ("addq %23,%q7\nadcq %21,%q6\nadcq %19,%q5\n\tadcq %17,%q4\n\tadcq %15,%q3\n\tadcq %13,%q2\n\tadcq %11,%q1\n\tadcq %9,%q0" \ | ^~~~~~~ ./src/crt_helpers.h:378:5: note: in expansion of macro ‘add_ssssssssaaaaaaaaaaaaaaaa’ 378 | add_ssssssssaaaaaaaaaaaaaaaa(z[7],z[6],z[5],z[4],z[3],z[2],z[1],z[0], | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ --8<---------------cut here---------------end--------------->8---