How to refer to name of executable produced by makefile?

[iljah]

How does AMReX generate the name/rule of executable in makefile(s)? For example if I wanted to add a rule to https://github.com/AMReX-Codes/amrex-tutorials/blob/main/ExampleCodes/Basic/HeatEquation_EX0_C/Exec/GNUmakefile for testing that depends on produced executable:

test: main3d.gnu.DEBUG.ex
    ...

how is above main3d.gnu.DEBUG.ex determined? What should I use instead so that my rule works even if e.g. COMP != gnu, DEBUG != TRUE, PRECISION != DOUBLE, etc?

[philip-blakely]

The variable executable within Make should be what you need, i.e.

test: $(executable)

Also maybe relevant: AMReX has a feature that make print-VARIABLE prints the eventual value of that variable.
So make print-executable outputs:

Loading Exec/amrex/Tools/GNUMake/comps/gnu.mak...
Loading Exec/amrex/Tools/GNUMake/sites/Make.unknown...
executable is all1d.gnu.ex
    origin = file
     value = $(addsuffix $(optionsSuffix).ex, $(EBASE))

[iljah]

Thank you!