mirror of
https://github.com/xen-project/xen.git
synced 2026-10-29 02:30:03 +01:00
Keir Fraser
0243b256d6
- Move PAGE_SIZE and STACK_SIZE into __PAGE_SIZE and __STACK_SIZE in arch_limits.h so as to permit getting them from there without pulling all the internal Mini-OS defines. - Setup a xen-elf cross-compilation environment in stubdom/cross-root - Add a POSIX layer on top of Mini-OS by linking against the newlib C library and lwIP, and implementing the Unixish part in mini-os/lib/sys.c - Cross-compile zlib and libpci too. - Add an xs.h-compatible layer on top of Mini-OS' xenbus. - Cross-compile libxc with an additional xc_minios.c and a few things disabled. - Cross-compile ioemu with an additional block-vbd, but without sound, tpm and other details. A few hacks are needed: - Align ide and scsi buffers at least on sector size to permit direct transmission to the block backend. While we are at it, just page-align it to possibly save a segment. Also, limit the scsi buffer size because of limitations of the block paravirtualization protocol. - Allocate big tables dynamically rather that letting them go to bss: when Mini-OS gets installed in memory, bss is not lazily allocated, and doing so during Mini-OS is unnecessarily trick while we can simply use malloc. - Had to change the Mini-OS compilation somehow, so as to export Mini-OS compilation flags to the Makefiles of libxc and ioemu. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
100 lines
2.9 KiB
Makefile
100 lines
2.9 KiB
Makefile
# -*- mode: Makefile; -*-
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# A debug build of Xen and tools?
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debug ?= n
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XEN_COMPILE_ARCH ?= $(shell uname -m | sed -e s/i.86/x86_32/ \
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-e s/ppc/powerpc/ -e s/i86pc/x86_32/ \
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-e s/amd64/x86_64/)
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XEN_TARGET_ARCH ?= $(XEN_COMPILE_ARCH)
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XEN_OS ?= $(shell uname -s)
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ifeq ($(XEN_TARGET_ARCH),x86_32)
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XEN_TARGET_X86_PAE ?= y
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endif
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CONFIG_$(XEN_OS) := y
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SHELL ?= /bin/sh
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# Tools to run on system hosting the build
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HOSTCC = gcc
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HOSTCFLAGS = -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer
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HOSTCFLAGS += -fno-strict-aliasing
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DISTDIR ?= $(XEN_ROOT)/dist
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DESTDIR ?= /
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include $(XEN_ROOT)/config/$(XEN_OS).mk
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include $(XEN_ROOT)/config/$(XEN_TARGET_ARCH).mk
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ifeq ($(stubdom),y)
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include $(XEN_ROOT)/extras/mini-os/Config.mk
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CFLAGS += $(DEF_CFLAGS) $(ARCH_CFLAGS)
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CPPFLAGS += $(DEF_CPPFLAGS) $(ARCH_CPPFLAGS) $(extra_incl)
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ASFLAGS += $(DEF_ASFLAGS) $(ARCH_ASFLAGS)
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LDFLAGS += $(DEF_LDFLAGS) $(ARCH_LDFLAGS)
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endif
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ifneq ($(EXTRA_PREFIX),)
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EXTRA_INCLUDES += $(EXTRA_PREFIX)/include
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EXTRA_LIB += $(EXTRA_PREFIX)/$(LIBLEAFDIR)
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endif
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# cc-option: Check if compiler supports first option, else fall back to second.
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# Usage: cflags-y += $(call cc-option,$(CC),-march=winchip-c6,-march=i586)
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cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
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/dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)
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# cc-ver: Check compiler is at least specified version. Return boolean 'y'/'n'.
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# Usage: ifeq ($(call cc-ver,$(CC),0x030400),y)
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cc-ver = $(shell if [ $$((`$(1) -dumpversion | awk -F. \
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'{ printf "0x%02x%02x%02x", $$1, $$2, $$3}'`)) -ge $$(($(2))) ]; \
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then echo y; else echo n; fi ;)
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# cc-ver-check: Check compiler is at least specified version, else fail.
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# Usage: $(call cc-ver-check,CC,0x030400,"Require at least gcc-3.4")
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cc-ver-check = $(eval $(call cc-ver-check-closure,$(1),$(2),$(3)))
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define cc-ver-check-closure
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ifeq ($$(call cc-ver,$$($(1)),$(2)),n)
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override $(1) = echo "*** FATAL BUILD ERROR: "$(3) >&2; exit 1;
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cc-option := n
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endif
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endef
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ifeq ($(debug),y)
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CFLAGS += -g
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endif
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CFLAGS += -fno-strict-aliasing
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CFLAGS += -std=gnu99
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CFLAGS += -Wall -Wstrict-prototypes
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# -Wunused-value makes GCC 4.x too aggressive for my taste: ignoring the
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# result of any casted expression causes a warning.
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CFLAGS += -Wno-unused-value
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HOSTCFLAGS += $(call cc-option,$(HOSTCC),-Wdeclaration-after-statement,)
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CFLAGS += $(call cc-option,$(CC),-Wdeclaration-after-statement,)
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LDFLAGS += $(foreach i, $(EXTRA_LIB), -L$(i))
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CFLAGS += $(foreach i, $(EXTRA_INCLUDES), -I$(i))
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# Enable XSM security module. Enabling XSM requires selection of an
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# XSM security module (FLASK_ENABLE or ACM_SECURITY).
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XSM_ENABLE ?= n
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FLASK_ENABLE ?= n
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ACM_SECURITY ?= n
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# Optional components
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XENSTAT_XENTOP ?= y
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VTPM_TOOLS ?= n
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LIBXENAPI_BINDINGS ?= n
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PYTHON_TOOLS ?= y
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CONFIG_MINITERM ?= n
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CONFIG_LOMOUNT ?= n
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-include $(XEN_ROOT)/.config
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