mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 10:11:27 +01:00
282 lines
9.4 KiB
Makefile
282 lines
9.4 KiB
Makefile
# -*- mode: Makefile; -*-
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ifeq ($(filter /%,$(XEN_ROOT)),)
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$(error XEN_ROOT must be absolute)
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endif
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# Convenient variables
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comma := ,
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squote := '
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empty :=
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space := $(empty) $(empty)
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# fallback for older make
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realpath = $(wildcard $(foreach file,$(1),$(shell cd -P $(dir $(file)) && echo "$$PWD/$(notdir $(file))")))
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or = $(if $(strip $(1)),$(1),$(if $(strip $(2)),$(2),$(if $(strip $(3)),$(3),$(if $(strip $(4)),$(4)))))
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-include $(XEN_ROOT)/.config
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# A debug build of Xen and tools?
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debug ?= y
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debug_symbols ?= $(debug)
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# Test coverage support
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coverage ?= n
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XEN_COMPILE_ARCH ?= $(shell uname -m | sed -e s/i.86/x86_32/ \
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-e s/i86pc/x86_32/ -e s/amd64/x86_64/ \
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-e s/armv7.*/arm32/ -e s/armv8.*/arm64/ \
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-e s/aarch64/arm64/)
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XEN_TARGET_ARCH ?= $(XEN_COMPILE_ARCH)
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XEN_OS ?= $(shell uname -s)
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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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# Allow phony attribute to be listed as dependency rather than fake target
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.PHONY: .phony
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# Use Clang/LLVM instead of GCC?
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clang ?= n
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ifeq ($(clang),n)
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gcc := y
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else
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gcc := n
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endif
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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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# arguments: variable, common path part, path to test, if yes, if no
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define setvar_dir
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ifndef $(1)
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ifneq (,$(wildcard $(2)$(3)))
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$(1) ?= $(2)$(4)
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else
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$(1) ?= $(2)$(5)
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endif
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endif
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endef
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ifneq ($(EXTRA_PREFIX),)
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EXTRA_INCLUDES += $(EXTRA_PREFIX)/include
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EXTRA_LIB += $(EXTRA_PREFIX)/lib
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endif
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PYTHON ?= python
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PYTHON_PREFIX_ARG ?= --prefix="$(PREFIX)"
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# The above requires that PREFIX contains *no spaces*. This variable is here
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# to permit the user to set PYTHON_PREFIX_ARG to '' to workaround this bug:
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# https://bugs.launchpad.net/ubuntu/+bug/362570
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# cc-option: Check if compiler supports first option, else fall back to second.
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#
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# This is complicated by the fact that unrecognised -Wno-* options:
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# (a) are ignored unless the compilation emits a warning; and
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# (b) even then produce a warning rather than an error
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# To handle this we do a test compile, passing the option-under-test, on a code
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# fragment that will always produce a warning (integer assigned to pointer).
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# We then grep for the option-under-test in the compiler's output, the presence
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# of which would indicate an "unrecognized command-line option" warning/error.
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#
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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 "`echo 'void*p=1;' | \
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$(1) $(2) -S -o /dev/null -x c - 2>&1 | grep -- $(2) -`"; \
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then echo "$(2)"; else echo "$(3)"; fi ;)
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# cc-option-add: Add an option to compilation flags, but only if supported.
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# Usage: $(call cc-option-add CFLAGS,CC,-march=winchip-c6)
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cc-option-add = $(eval $(call cc-option-add-closure,$(1),$(2),$(3)))
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define cc-option-add-closure
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ifneq ($$(call cc-option,$$($(2)),$(3),n),n)
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$(1) += $(3)
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endif
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endef
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cc-options-add = $(foreach o,$(3),$(call cc-option-add,$(1),$(2),$(o)))
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# cc-ver: Check compiler is at least specified version. Return boolean 'y'/'n'.
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# Usage: ifeq ($(call cc-ver,$(CC),0x030400),y)
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cc-ver = $(shell if [ $$((`$(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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# Require GCC v4.1+
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check-$(gcc) = $(call cc-ver-check,CC,0x040100,"Xen requires at least gcc-4.1")
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$(eval $(check-y))
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# as-insn: Check whether assembler supports an instruction.
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# Usage: cflags-y += $(call as-insn "insn",option-yes,option-no)
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as-insn = $(if $(shell echo 'void _(void) { asm volatile ( $(2) ); }' \
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| $(1) -c -x c -o /dev/null - 2>&1),$(4),$(3))
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# as-insn-check: Add an option to compilation flags, but only if insn is
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# supported by assembler.
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# Usage: $(call as-insn-check CFLAGS,CC,"nop",-DHAVE_GAS_NOP)
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as-insn-check = $(eval $(call as-insn-check-closure,$(1),$(2),$(3),$(4)))
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define as-insn-check-closure
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ifeq ($$(call as-insn,$$($(2)),$(3),y,n),y)
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$(1) += $(4)
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endif
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endef
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define buildmakevars2shellvars
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export PREFIX="$(PREFIX)"; \
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export XEN_SCRIPT_DIR="$(XEN_SCRIPT_DIR)"; \
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export XEN_ROOT="$(XEN_ROOT)"
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endef
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#
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# Compare $(1) and $(2) and replace $(2) with $(1) if they differ
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#
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# Typically $(1) is a newly generated file and $(2) is the target file
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# being regenerated. This prevents changing the timestamp of $(2) only
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# due to being auto regenereated with the same contents.
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define move-if-changed
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if ! cmp -s $(1) $(2); then mv -f $(1) $(2); else rm -f $(1); fi
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endef
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BUILD_MAKE_VARS := SBINDIR BINDIR LIBEXEC LIBEXEC_BIN LIBDIR SHAREDIR \
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XENFIRMWAREDIR XEN_CONFIG_DIR XEN_SCRIPT_DIR XEN_LOCK_DIR \
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XEN_RUN_DIR XEN_PAGING_DIR
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buildmakevars2file = $(eval $(call buildmakevars2file-closure,$(1)))
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define buildmakevars2file-closure
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$(1): .phony
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rm -f $(1).tmp; \
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$(foreach var, $(BUILD_MAKE_VARS), \
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echo "$(var)=\"$($(var))\"" >>$(1).tmp;) \
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$(call move-if-changed,$(1).tmp,$(1))
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endef
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buildmakevars2header = $(eval $(call buildmakevars2header-closure,$(1)))
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define buildmakevars2header-closure
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$(1): .phony
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rm -f $(1).tmp; \
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$(foreach var, $(BUILD_MAKE_VARS), \
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echo "#define $(var) \"$($(var))\"" >>$(1).tmp;) \
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$(call move-if-changed,$(1).tmp,$(1))
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endef
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ifeq ($(debug_symbols),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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# Clang complains about macros that expand to 'if ( ( foo == bar ) ) ...'
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# and is over-zealous with the printf format lint
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# and is a bit too fierce about unused return values
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CFLAGS-$(clang) += -Wno-parentheses -Wno-format -Wno-unused-value
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$(call cc-option-add,HOSTCFLAGS,HOSTCC,-Wdeclaration-after-statement)
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$(call cc-option-add,CFLAGS,CC,-Wdeclaration-after-statement)
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$(call cc-option-add,CFLAGS,CC,-Wno-unused-but-set-variable)
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$(call cc-option-add,CFLAGS,CC,-Wno-unused-local-typedefs)
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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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LDFLAGS += $(foreach i, $(PREPEND_LIB), -L$(i))
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CFLAGS += $(foreach i, $(PREPEND_INCLUDES), -I$(i))
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ifeq ($(XEN_TOOLS_RPATH),y)
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LDFLAGS += -Wl,-rpath,$(LIBDIR)
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endif
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APPEND_LDFLAGS += $(foreach i, $(APPEND_LIB), -L$(i))
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APPEND_CFLAGS += $(foreach i, $(APPEND_INCLUDES), -I$(i))
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EMBEDDED_EXTRA_CFLAGS := -nopie -fno-stack-protector -fno-stack-protector-all
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EMBEDDED_EXTRA_CFLAGS += -fno-exceptions
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# Enable XSM security module (by default, Flask).
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XSM_ENABLE ?= n
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FLASK_ENABLE ?= $(XSM_ENABLE)
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XEN_EXTFILES_URL ?= http://xenbits.xen.org/xen-extfiles
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# All the files at that location were downloaded from elsewhere on
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# the internet. The original download URL is preserved as a comment
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# near the place in the Xen Makefiles where the file is used.
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# Where to look for inlined subtrees (for example, from a tarball)
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QEMU_UPSTREAM_INTREE ?= $(XEN_ROOT)/tools/qemu-xen
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QEMU_TRADITIONAL_INTREE ?= $(XEN_ROOT)/tools/qemu-xen-traditional
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# Handle legacy options
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ifneq (,$(SEABIOS_UPSTREAM_TAG))
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SEABIOS_UPSTREAM_REVISION ?= $(SEABIOS_UPSTREAM_TAG)
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endif
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ifneq (,$(QEMU_REMOTE))
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QEMU_TRADITIONAL_URL ?= $(QEMU_REMOTE)
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endif
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ifneq (,$(CONFIG_QEMU))
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QEMU_TRADITIONAL_LOC ?= $(CONFIG_QEMU)
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endif
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ifneq (,$(QEMU_TAG))
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QEMU_TRADITIONAL_REVISION ?= $(QEMU_TAG)
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endif
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ifeq ($(GIT_HTTP),y)
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OVMF_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/ovmf.git
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QEMU_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/qemu-upstream-unstable.git
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QEMU_TRADITIONAL_URL ?= http://xenbits.xen.org/git-http/qemu-xen-unstable.git
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SEABIOS_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/seabios.git
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else
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OVMF_UPSTREAM_URL ?= git://xenbits.xen.org/ovmf.git
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QEMU_UPSTREAM_URL ?= git://xenbits.xen.org/qemu-upstream-unstable.git
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QEMU_TRADITIONAL_URL ?= git://xenbits.xen.org/qemu-xen-unstable.git
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SEABIOS_UPSTREAM_URL ?= git://xenbits.xen.org/seabios.git
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endif
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OVMF_UPSTREAM_REVISION ?= 447d264115c476142f884af0be287622cd244423
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QEMU_UPSTREAM_REVISION ?= master
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SEABIOS_UPSTREAM_REVISION ?= rel-1.7.5
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# Thu May 22 16:59:16 2014 -0400
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# python3 fixes for vgabios and csm builds.
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ETHERBOOT_NICS ?= rtl8139 8086100e
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QEMU_TRADITIONAL_REVISION ?= a4b276b4ce49c8d70dd841ff885b900ec652b994
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# Mon Feb 2 16:49:59 2015 +0000
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# cirrus: fix an uninitialized variable
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# Specify which qemu-dm to use. This may be `ioemu' to use the old
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# Mercurial in-tree version, or a local directory, or a git URL.
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# QEMU_UPSTREAM_LOC ?= `pwd`/$(XEN_ROOT)/../qemu-xen.git
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# Defaults for subtree locations
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QEMU_TRADITIONAL_LOC ?= $(call or,$(wildcard $(QEMU_TRADITIONAL_INTREE)),\
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$(QEMU_TRADITIONAL_URL))
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QEMU_UPSTREAM_LOC ?= $(call or,$(wildcard $(QEMU_UPSTREAM_INTREE)),\
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$(QEMU_UPSTREAM_URL))
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# Short answer -- do not enable this unless you know what you are
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# doing and are prepared for some pain.
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CONFIG_TESTS ?= y
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