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