roms: Add a 'make help' target alias

Various C projects provide a 'make help' target. Our root directory
does so. The roms/ directory lacks a such rule, but already displays
a help output when the default target is called.
Add a 'help' target aliased to the default one, to avoid:

  $ make -C roms help
  make: *** No rule to make target 'help'.  Stop.

Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20190920171159.18633-1-philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2019-09-20 19:11:59 +02:00
parent f3e330e3c3
commit 6f8a70f62f

View File

@ -51,7 +51,7 @@ SEABIOS_EXTRAVERSION="-prebuilt.qemu.org"
#
EDK2_EFIROM = edk2/BaseTools/Source/C/bin/EfiRom
default:
default help:
@echo "nothing is build by default"
@echo "available build targets:"
@echo " bios -- update bios.bin (seabios)"