$ time qmk compile -kb moonlander -km ThomasMoonlander
Ψ Compiling keymap with make --jobs=8 --output-sync=target moonlander:ThomasMoonlander


QMK Firmware 0.20.1
⚠ moonlander: Layout "LAYOUT_moonlander" should not contain name of keyboard.
Making moonlander with keymap ThomasMoonlander

⚠ moonlander: Layout "LAYOUT_moonlander" should not contain name of keyboard.
Size before:
   text    data     bss     dec     hex filename
      0   62784       0   62784    f540 moonlander_ThomasMoonlander.bin

arm-none-eabi-gcc.exe (GCC) 10.1.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiling: quantum/sync_timer.c                                                                     [OK]
Compiling: quantum/logging/sendchar.c                                                               [OK]
Compiling: quantum/logging/print.c                                                                  [OK]
Compiling: quantum/keycode_config.c                                                                 [OK]
Compiling: quantum/logging/debug.c                                                                  [OK]
Compiling: quantum/keymap_introspection.c                                                          In file included from quantum/keymap_introspection.c:5:
./keyboards/moonlander/keymaps/ThomasMoonlander/keymap.c:9:10: fatal error: keymap_br_abnt2.h: No such file or directory
    9 | #include "keymap_br_abnt2.h"
      |          ^~~~~~~~~~~~~~~~~~~
compilation terminated.
 [ERRORS]
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make[1]: *** [builddefs/common_rules.mk:360: .build/obj_moonlander_ThomasMoonlander/quantum/keymap_introspection.o] Error 1 make[1]: *** Waiting for unfinished jobs....
Compiling: quantum/keymap_common.c                                                                  [OK]
Compiling: quantum/bootmagic/bootmagic_lite.c                                                       [OK]
Compiling: quantum/main.c                                                                           [OK]
Compiling: quantum/bootmagic/magic.c                                                                [OK]
Compiling: lib/printf/src/printf/printf.c                                                           [OK]
Compiling: quantum/matrix_common.c                                                                  [OK]
Compiling: quantum/debounce/sym_defer_g.c                                                           [OK]
Make finished with errors
make: *** [Makefile:392: moonlander:ThomasMoonlander] Error 1

real    0m56.379s
user    0m0.031s
sys     0m0.046s