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[makefile] Add support for multiple build platforms

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Allow for the build CPU architecture and platform to be specified as part
of the make command goals.  For example:

  make bin/rtl8139.rom      # Standard i386 PC-BIOS build

  make bin-efi/rtl8139.efi  # i386 EFI build

The generic syntax is "bin[-[arch-]platform]", with the default
architecture being "i386" (regardless of the host architecture) and the
default platform being "pcbios".

Non-path targets such as "srcs" can be specified using e.g.

  make bin-efi srcs

Note that this changeset is merely Makefile restructuring to allow the
build architecture and platform to be determined by the make command
goals, and to export these to compiled code via the ARCH and PLATFORM
defines.  It doesn't actually introduce any new build platforms.
This commit is contained in:
Michael Brown
2008-10-07 23:18:15 +01:00
parent f0b942ef42
commit a2588547f9
3 changed files with 381 additions and 222 deletions
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11
src/arch/i386/Makefile
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@@ -144,14 +144,3 @@ NON_AUTO_MEDIA += usb
# output of "make"
#
MEDIA += $(NON_AUTO_MEDIA)
# Shortcut to allow typing just
# make bin-kir/%
# rather than
# make -f arch/i386/kir-Makefile bin-kir/%
# for building a KEEP_IT_REAL flavour.
#
$(BIN)-kir/% : kir-target
$(MAKE) -f arch/i386/kir-Makefile $(MAKECMDGOALS)
.PHONY : kir-target