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#!/usr/bin/make -f
##########################################################
# Copyright (C) 2007 VMware, Inc. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation version 2 and no later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
##########################################################
vm_check_build = $(shell if $(CC) $(CC_OPTS) $(INCLUDE) -Werror -S -o /dev/null -xc $(1) \
> /dev/null 2>&1; then echo "$(2)"; else echo "$(3)"; fi)
vm_product_defines = $(if $(findstring tools,$(1)), -DVMX86_TOOLS,)
####
#### DESTDIR is where the module, object files, and dependencies are built
####
DESTDIR := driver-$(VM_UNAME)
####
#### DRIVERNAME should be untouched unless you have a good reason to change
#### it. The form below is how the scripts expect it.
####
DRIVERNAME := $(DRIVER)-xxx-$(VM_UNAME)
ifneq (,$(filter x86_64%, $(shell $(CC) -dumpmachine)))
MACHINE := x86_64
else
MACHINE := x386
endif
ifdef QUIET
ECHO := @true
else
ECHO := @echo
endif
####
#### You must compile with at least -O level of optimization
#### or the module won't load.
#### If desparate, I think that bringing in <linux/bitops.h> might
#### suffice.
####
CC_WARNINGS := -Wall -Wstrict-prototypes
# Don't use -pipe or egcs-2.91.66 (shipped with RedHat) will die
CC_KFLAGS := -D__KERNEL__ -fno-strength-reduce -fno-omit-frame-pointer \
-fno-common -DKBUILD_MODNAME=$(DRIVER)
CC_KFLAGS += $(call vm_check_gcc,-falign-loops=2 -falign-jumps=2 -falign-functions=2, \
-malign-loops=2 -malign-jumps=2 -malign-functions=2)
CC_KFLAGS += $(call vm_check_gcc,-fno-strict-aliasing,)
CC_KFLAGS += $(call vm_product_defines, $(PRODUCT))
ifeq ($(MACHINE),x86_64)
CC_KFLAGS += -mno-red-zone -mcmodel=kernel
else
# Gcc 3.0 deprecates -m486 --hpreg
CC_KFLAGS += -DCPU=586 $(call check_gcc,-march=i586,-m486)
endif
CC_OPTS := -O2 -DMODULE $(GLOBAL_DEFS) $(CC_KFLAGS) $(CC_WARNINGS)
INCLUDE += -I$(SRCROOT)/include
INCLUDE += -I$(SRCROOT)/linux
INCLUDE += -I$(SRCROOT)/common
INCLUDE += -I$(HEADER_DIR)
INCLUDE += $(shell $(CC) $(INCLUDE) -E $(AUTOCONF_DIR)/geninclude.c \
| sed -n -e 's!^APATH!-I$(HEADER_DIR)/asm!p')
CC_OPTS += $(call vm_check_build, $(AUTOCONF_DIR)/skas1.c, -DVMW_SKAS_MMAP, )
CC_OPTS += $(call vm_check_build, $(AUTOCONF_DIR)/epoll.c, -DVMW_HAVE_EPOLL, )
CC_OPTS += $(call vm_check_build, $(AUTOCONF_DIR)/setnice.c, -DVMW_HAVE_SET_USER_NICE, )
# This test is inverted.
CC_OPTS += $(call vm_check_build, $(AUTOCONF_DIR)/sk_filter.c,, -DVMW_HAVE_NEW_SKFILTER )
CC_OPTS += -DVMW_KMEMCR_HAS_DTOR
LINUX_OBJS := af_vsock.o
LINUX_OBJS += vsockAddr.o
LINUX_OBJS += util.o
LINUX_OBJS += driverLog.o
LINUX_DEPS := ${LINUX_OBJS:.o=.d}
OBJS := $(LINUX_OBJS)
ifdef OVT_SOURCE_PATH
driverLog.o: $(OVT_SOURCE_DIR)/modules/linux/shared/driverLog.c
$(CC) $(CC_OPTS) $(INCLUDE) -c $<
else
driverLog.o: shared/driverLog.c
$(CC) $(CC_OPTS) $(INCLUDE) -c $<
endif
####
#### Make Targets are beneath here.
####
driver: setup deps
$(MAKE) -C $(DESTDIR) -f ../Makefile SRCROOT=../$(SRCROOT) $(DRIVERNAME) \
INCLUDE_DEPS=1
setup:
@if [ -d $(DESTDIR) ] ; then true ; else mkdir $(DESTDIR); chmod 755 $(DESTDIR) ; fi
$(DRIVER): $(DRIVERNAME)
cp -f $< $@
$(DRIVERNAME): $(OBJS)
$(ECHO) "Building $(DRIVERNAME)"
ld -r -o $(DRIVERNAME) $^
auto-build:
$(MAKE) driver QUIET=1
cp -f $(DESTDIR)/$(DRIVERNAME) $(SRCROOT)/../$(DRIVER).o
$(LINUX_OBJS): %.o: $(SRCROOT)/linux/%.c
$(ECHO) "Compiling $<"
$(CC) $(CC_OPTS) $(INCLUDE) -c $<
clean:
rm -rf $(DESTDIR)/
$(LINUX_DEPS): %.d: $(SRCROOT)/linux/%.c
$(ECHO) "Dependencies for $<"
$(CC) -MM $(CC_OPTS) $(INCLUDE) $< > $@
deps: setup
$(MAKE) -C $(DESTDIR) -f ../Makefile SRCROOT=../$(SRCROOT) driver_deps
driver_deps: ${OBJS:.o=.d}
ifdef INCLUDE_DEPS
include ${OBJS:.o=.d}
endif
.SILENT:
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