CMake support

[mtaillefumier]

tmlQCD can be compiled with CMake. So far the build supports

• QUDA (with all QUDA releated options)
• CUDA
• HIP
• MPI
• OpenMP
• lime
• lemon
• hdf5
• fftw
• QphiX
• lapack
• DDalphaAMG
• Rename DFLAGS with TM_USE_BLA
• Vectorization alignment
• Documentation
• cleanup
• ci/cd update
• cscs ci/cd update
• Remove TM_USE_QUDA_EXPERIMENTAL and TM_QUDA_FERMIONIC_FORCES #ifdef statements but not the code itself.
• HIP_PATH HIP_ROOT
• Add autodetection
• Remove KOJAX
• use fetch_content
• remove bison
• Rewrite the README.md
• HIP+QUDA+tmLQCD
• test compilation on beverin / AMD GPU (can be done separately, not cmake specific)

[mtaillefumier]

@kostrzewa and @chaoos :

• I reorganized the source tree and moved all library files in src/lib and executable in src/bin. Other layouts can be used
• Compilation fails for some of the tests for instance test_locallity.c.

[kostrzewa]

@kottnad @chaoos in preparation for the discussion it would be great if you could give this a look and see if there are things where we should use the opportunity to do them differently

[chaoos]

Even with the changes from my suggestions below, the build still fails for me with various compiler errors and warnings, like e.g.:

/home/roman/projects/tmp/tmLQCD/src/lib/io/gauge_read_binary.c: In function ‘read_binary_gauge_data’:
/home/roman/projects/tmp/tmLQCD/src/lib/io/gauge_read_binary.c:72:17: error: ‘g_cart_grid’ undeclared (first use in this function); did you mean ‘g_cart_id’?
   72 |     MPI_Barrier(g_cart_grid);
      |                 ^~~~~~~~~~~
      |                 g_cart_id
/home/roman/projects/tmp/tmLQCD/src/lib/io/gauge_read_binary.c:72:17: note: each undeclared identifier is reported only once for each function it appears in
/home/roman/projects/tmp/tmLQCD/src/lib/io/utils_construct_writer.c: In function ‘construct_writer’:
/home/roman/projects/tmp/tmLQCD/src/lib/io/utils_construct_writer.c:17:28: error: ‘g_cart_grid’ undeclared (first use in this function); did you mean ‘g_cart_id’?
   17 |     status = MPI_File_open(g_cart_grid, filename,
      |                            ^~~~~~~~~~~
      |                            g_cart_id

One can put these variables as extern, but then at link time it fail to resolve with undefined reference to g_cart_grid'`.

[chaoos]

Even with the changes from my suggestions below, the build still fails for me with various compiler errors and warnings, like e.g.:

/home/roman/projects/tmp/tmLQCD/src/lib/io/gauge_read_binary.c: In function ‘read_binary_gauge_data’:
/home/roman/projects/tmp/tmLQCD/src/lib/io/gauge_read_binary.c:72:17: error: ‘g_cart_grid’ undeclared (first use in this function); did you mean ‘g_cart_id’?
   72 |     MPI_Barrier(g_cart_grid);
      |                 ^~~~~~~~~~~
      |                 g_cart_id
/home/roman/projects/tmp/tmLQCD/src/lib/io/gauge_read_binary.c:72:17: note: each undeclared identifier is reported only once for each function it appears in
/home/roman/projects/tmp/tmLQCD/src/lib/io/utils_construct_writer.c: In function ‘construct_writer’:
/home/roman/projects/tmp/tmLQCD/src/lib/io/utils_construct_writer.c:17:28: error: ‘g_cart_grid’ undeclared (first use in this function); did you mean ‘g_cart_id’?
   17 |     status = MPI_File_open(g_cart_grid, filename,
      |                            ^~~~~~~~~~~
      |                            g_cart_id

One can put these variables as extern, but then at link time it fail to resolve with undefined reference to g_cart_grid'`.

Apologies, if I build lemon with the new cmake system as static library, I can build tmlqcd properly.

[mtaillefumier]

Sorry, the current version does not support the lemon configure build as the lemon cmake build system makes this more reliable. I need to check if I generate a pkg-config file for lemon

[kostrzewa]

@kostrzewa check if FFTW still needed

[kostrzewa]

remove LAPH_ev.c

[kostrzewa]

@kostrzewa test if this works with CVC

[kostrzewa]

please add a couple of example cmake calls to a doc/cmake-examples directory

[kostrzewa]

cscs-ci run default