[FLASH-USERS] Compile FLASH4.8 LaserSlab on MacOS with M1 chip

[Yao Weipeng]

Hey there,

I am trying to use FLASH4.8 and the LaserSlab setup on my Mac laptop, with M1 chip.
And I got the following issue at the linking stage of the compilation:

Undefined symbols for architecture arm64:
 "_dgelsy_", referenced from:
     ___gr_uhyprelinearleastsquares_MOD_lsq.constprop.0 in gr_uhypreLinearLeastSquares.o
     ___gr_uhyprelinearleastsquares_MOD_lsq.constprop.0 in gr_uhypreLinearLeastSquares.o
     ___gr_uhyprelinearleastsquares_MOD_lsq.constprop.0 in gr_uhypreLinearLeastSquares.o
 "_dgeqrf_", referenced from:
     ___gr_uhyprelinearleastsquares_MOD_linsqln in gr_uhypreLinearLeastSquares.o
     ___gr_uhyprelinearleastsquares_MOD_linsqln in gr_uhypreLinearLeastSquares.o
     ___gr_uhyprelinearleastsquares_MOD_linsqln in gr_uhypreLinearLeastSquares.o
 "_dgesv_", referenced from:
     ___gr_uhyprelinearleastsquares_MOD_linsqln in gr_uhypreLinearLeastSquares.o
     ___gr_uhyprelinearleastsquares_MOD_linsqln in gr_uhypreLinearLeastSquares.o
     ___gr_uhyprelinearleastsquares_MOD_linsqln in gr_uhypreLinearLeastSquares.o
 "_dorgqr_", referenced from:
     ___gr_uhyprelinearleastsquares_MOD_linsqln in gr_uhypreLinearLeastSquares.o
ld: symbol(s) not found for architecture arm64
collect2: error: ld returned 1 exit status
make: *** [flash4] Error 1

Is there someone who might have a clue in dealing with this issue?

Thanks,
Weipeng
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