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authorEddie Hung <eddie@fpgeh.com>2019-09-25 22:58:55 -0700
committerEddie Hung <eddie@fpgeh.com>2019-09-25 22:58:55 -0700
commit35aaa8d73a75f36a42eea9ef2b210d9e79e5edc3 (patch)
treeef51d03ecefa22575ae418c8ebf707befa30fa0e /techlibs/xilinx
parentf1de93edf5b5c73440d445d8d6fa32251d2bdab1 (diff)
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# -*- mode: Makefile; -*-

# A debug build of Xen and tools?
debug ?= n

XEN_COMPILE_ARCH    ?= $(shell uname -m | sed -e s/i.86/x86_32/ \
                         -e s/i86pc/x86_32/ -e s/amd64/x86_64/)
XEN_TARGET_ARCH     ?= $(XEN_COMPILE_ARCH)
XEN_OS              ?= $(shell uname -s)

CONFIG_$(XEN_OS) := y

SHELL     ?= /bin/sh

# Tools to run on system hosting the build
HOSTCC      = gcc
HOSTCFLAGS  = -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer
HOSTCFLAGS += -fno-strict-aliasing

DISTDIR     ?= $(XEN_ROOT)/dist
DESTDIR     ?= /

# Allow phony attribute to be listed as dependency rather than fake target
.PHONY: .phony

include $(XEN_ROOT)/config/$(XEN_OS).mk
include $(XEN_ROOT)/config/$(XEN_TARGET_ARCH).mk

SHAREDIR    ?= $(PREFIX)/share
DOCDIR      ?= $(SHAREDIR)/doc/xen
MANDIR      ?= $(SHAREDIR)/man

ifneq ($(EXTRA_PREFIX),)
EXTRA_INCLUDES += $(EXTRA_PREFIX)/include
EXTRA_LIB += $(EXTRA_PREFIX)/$(LIBLEAFDIR)
endif

PYTHON      ?= python
PYTHON_PREFIX_ARG ?= --prefix="$(PREFIX)"
# The above requires that PREFIX contains *no spaces*. This variable is here
# to permit the user to set PYTHON_PREFIX_ARG to '' to workaround this bug:
#  https://bugs.launchpad.net/ubuntu/+bug/362570

# cc-option: Check if compiler supports first option, else fall back to second.
# Usage: cflags-y += $(call cc-option,$(CC),-march=winchip-c6,-march=i586)
cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
              /dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)

# cc-option-add: Add an option to compilation flags, but only if supported.
# Usage: $(call cc-option-add CFLAGS,CC,-march=winchip-c6)
cc-option-add = $(eval $(call cc-option-add-closure,$(1),$(2),$(3)))
define cc-option-add-closure
    ifneq ($$(call cc-option,$$($(2)),$(3),n),n)
        $(1) += $(3)
    endif
endef

# cc-ver: Check compiler is at least specified version. Return boolean 'y'/'n'.
# Usage: ifeq ($(call cc-ver,$(CC),0x030400),y)
cc-ver = $(shell if [ $$((`$(1) -dumpversion | awk -F. \
           '{ printf "0x%02x%02x%02x", $$1, $$2, $$3}'`)) -ge $$(($(2))) ]; \
           then echo y; else echo n; fi ;)

# cc-ver-check: Check compiler is at least specified version, else fail.
# Usage: $(call cc-ver-check,CC,0x030400,"Require at least gcc-3.4")
cc-ver-check = $(eval $(call cc-ver-check-closure,$(1),$(2),$(3)))
define cc-ver-check-closure
    ifeq ($$(call cc-ver,$$($(1)),$(2)),n)
        override $(1) = echo "*** FATAL BUILD ERROR: "$(3) >&2; exit 1;
        cc-option := n
    endif
endef

define absolutify_xen_root
    case "$(XEN_ROOT)" in                                          \
    /*) XEN_ROOT=$(XEN_ROOT) ;;                                    \
    *)  xen_root_lhs=`pwd`;                                        \
        xen_root_rhs=$(XEN_ROOT)/;                                 \
        while [ "x$${xen_root_rhs#../}" != "x$$xen_root_rhs" ]; do \
            xen_root_rhs="$${xen_root_rhs#../}";                   \
            xen_root_rhs="$${xen_root_rhs#/}";                     \
            xen_root_rhs="$${xen_root_rhs#/}";                     \
            xen_root_lhs="$${xen_root_lhs%/*}";                    \
        done;                                                      \
        XEN_ROOT="$$xen_root_lhs/$$xen_root_rhs" ;;                \
    esac;                                                          \
    export XEN_ROOT
endef

ifeq ($(debug),y)
CFLAGS += -g
endif

CFLAGS += -fno-strict-aliasing

CFLAGS += -std=gnu99

CFLAGS += -Wall -Wstrict-prototypes

# -Wunused-value makes GCC 4.x too aggressive for my taste: ignoring the
# result of any casted expression causes a warning.
CFLAGS += -Wno-unused-value

$(call cc-option-add,HOSTCFLAGS,HOSTCC,-Wdeclaration-after-statement)