[Octave-bug-tracker] [bug #50339] configure detection for BLAS does not use -fdefault-integer-8

[Kai Torben Ohlhus]

Follow-up Comment #4, bug #50339 (project octave):

Thank you jwe. I have a custom built OpenBLAS, SuiteSparse, QRUPDATE, and
ARPACK-NG, each using 8 byte FORTRAN integers and changed SONAME to avoid any
conflict with system wide installed libraries. This has been working for
Octave 4.2.0.

My Makefile is available from

https://github.com/siko1056/GNU-Octave-enable-64/blob/dev/Makefile (from line
212 on) and would expand to something like (usually without the highlighted
line, this flag, if not passed, will not be used while detecting the custom
BLAS library):


./configure \
  CPPFLAGS='-I$(INSTALL_DIR)/include' \
  LDFLAGS='-L$(INSTALL_DIR)/lib' \
  \
  \
  F77_INTEGER_8_FLAG='-fdefault-integer-8' \
  \
  \
  LD_LIBRARY_PATH='$(INSTALL_DIR)/lib' \
  --prefix=$(INSTALL_DIR) \
  --libdir='$(INSTALL_DIR)/lib' \
  --enable-64 \
  --with-blas='-lopenblas_Octave64' \
  --with-amd='-lamd_Octave64 \
              -lsuitesparseconfig_Octave64' \
  --with-camd='-lcamd_Octave64 \
               -lsuitesparseconfig_Octave64' \
  --with-colamd='-lcolamd_Octave64 \
                 -lsuitesparseconfig_Octave64' \
  --with-ccolamd='-lccolamd_Octave64 \
                  -lsuitesparseconfig_Octave64' \
  --with-cxsparse='-lcxsparse_Octave64 \
                   -lsuitesparseconfig_Octave64' \
  --with-cholmod=-lamd_Octave64 \
   -lcamd_Octave64 \
   -lcolamd_Octave64 \
   -lccolamd_Octave64 \
   -lcxsparse_Octave64 \
   -lumfpack_Octave64 \
   -lcholmod_Octave64 \
   -lsuitesparseconfig_Octave64 \
  --with-umfpack=-lamd_Octave64 \
   -lcamd_Octave64 \
   -lcolamd_Octave64 \
   -lccolamd_Octave64 \
   -lcxsparse_Octave64 \
   -lumfpack_Octave64 \
   -lcholmod_Octave64 \
   -lsuitesparseconfig_Octave64 \
  --with-qrupdate='-lqrupdate_Octave64' \
  --with-arpack='-larpack_Octave64'


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