Compiling GRASP using gfortran-10 fails

[jagot]

Compiling with the latest version of gfortran, i.e. 10, fails with the following error:

/tmp/grasp/src/lib/lib9290/iniest2.f90:82:23:

   79 |          CALL DCOPY (NS, VEC(NS*(J-1)+1), 1, BASIS(NCF*(J-1)+1), 1)
      |                         2
......
   82 |       CALL DCOPY (NIV, EIGVAL, 1, BASIS(NIV*NCF+1), 1)
      |                       1
Error: Rank mismatch between actual argument at (1) and actual argument at (2) (scalar and rank-1)
make[2]: *** [src/lib/lib9290/CMakeFiles/9290.dir/iniest2.f90.o] Error 1
make[1]: *** [src/lib/lib9290/CMakeFiles/9290.dir/all] Error 2
make: *** [all] Error 2

It seems it's the same problem as scipy/scipy#11611

Compiling with version 9 works, i.e. on a Mac where I have multiple versions installed, I can do

> FC=gfortran-9 ./configure.sh
> cd build && make

[mortenpi]

Thanks for the report and the ref. It might be a while before we fix the underlying issues.

But based on the GCC porting guide it should be sufficient to drop something like this into the CMakeLists.user file:

set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fallow-argument-mismatch")

to work around the error. Or equivalent into Make.user, for those using Makefiles.

[jongrumer]

Great, I just encountered this as well, and hadn't noticed your issue so created a new one - stupid. Anyway, I found the same workaround as Morten. We have tons of these missmatches around the code unfortunately, both scalar-rank-1 and real-4-real-8 etc. Not sure what to do really, I guess we could add the -fallow-argument-mismatch flag by default, but has to come with an if-statement since it only works for gfortran-10 and not below.

So, as a temporary fix if you're using gfortran-10 (and only then) as Morten suggested, but in non-cmake-lingo, append the FC_FLAG variable with this flag (directly in the terminal before making or in a new file Make.user, automatically read by the Makefile):

export FC_FLAGS="$FC_FLAGS -fallow-argument-mismatch"

[mortenpi]

Closing this in favour of #77.