[FLASH-USERS] Compiling wrong in FLASH 4.8 Build for LasersSlab

[Hansen, Eddie]

Hello,

You likely need to add “-fallow-argument-mismatch” to your compiler flags (FFLAGS_OPT and FFLAGS_DEBUG) in Makefile.h.

—
Eddie Hansen
Applications Group Leader
Flash Center for Computational Science

On Mar 30, 2026, at 5:11 AM, 黄翌轩 <yixuan-h22 at mails.tsinghua.edu.cn> wrote:

Dear FLASH Community,
I was trying to build the LaserSlab problem in FLASH 4.8 on Ubuntu, but during my build process, it turned out wrong that there's an error in Driver_computeDt.F90, which called:



Makefile:131: warning: pattern recipe did not update peer target 'Driver_computeCellLocations.mod'.
/usr/bin/mpif90 -ggdb -c -O2 -fdefault-real-8 -fdefault-double-8 -Wuninitialized  -DMAXBLOCKS=1000 -DNXB=8 -DNYB=8 -DNZB=1 -DN_DIM=2 Driver_computeDt.F90
Driver_computeDt.F90:544:20:

  536 |   call MPI_Bcast(dtMinLoc(1), 5, MPI_INTEGER, pgmin, dr_globalComm, error)

      |                 2
......
  544 |      call MPI_Bcast(extraHydroInfo, 1, FLASH_REAL, pgmin, dr_globalComm, error)
      |                    1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/INTEGER(4)).
Driver_computeDt.F90:549:20:

  536 |   call MPI_Bcast(dtMinLoc(1), 5, MPI_INTEGER, pgmin, dr_globalComm, error)

      |                 2
......
  549 |      call MPI_Bcast(extraHydroInfo, 1, FLASH_REAL, pgmin, dr_globalComm, error)
      |                    1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/INTEGER(4)).
make: *** [Makefile:132：Driver_computeDt.o] error 1

Any guidance would be greatly appreciated.

Thank you.

Best regards,
Yixuan Huang





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