1diff -Naur octave-4.4.1.orig/configure.ac octave-4.4.1/configure.ac 2--- octave-4.4.1.orig/configure.ac 2019-02-23 10:46:24.287240571 +0000 3+++ octave-4.4.1/configure.ac 2019-02-23 10:46:42.255249333 +0000 4@@ -762,6 +762,12 @@ 5 AC_MSG_ERROR([BLAS and LAPACK libraries are required]) 6 fi 7 8+if ac_fn_f77_try_run "$LINENO"; then : 9+ ax_blas_integer_size=8 10+else 11+ ax_blas_integer_size=4 12+fi 13+ 14 case $ax_blas_integer_size in 15 4) 16 HAVE_64_BIT_BLAS=no 17