Michal Kubecek
992ae1d5a1
Workstation/Player 15.5.0 tries to guess the right retpoline (Spectre) related compiler command line options, resulting in objtool warnings like warning: objtool: .text.__x86_indirect_thunk_rbp+0x0: unsupported intra-function call warning: objtool: If this is a retpoline, please patch it in with alternatives and annotate e.g. in vmmon-only/common/memtrack.o (but also many others). This seems wrong; out-of-tree modules should be built with the same compiler options that were used to build the kernel they are built against. Distribution kernel devel packages usually make sure this is the way so let them do their job.
148 lines
3.9 KiB
Makefile
148 lines
3.9 KiB
Makefile
#!/usr/bin/make -f
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##########################################################
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# Copyright (C) 1998-2019 VMware, Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation version 2 and no later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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##########################################################
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####
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#### VMware kernel module Makefile to be distributed externally
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####
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####
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#### SRCROOT _must_ be a relative path.
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####
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SRCROOT = .
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#
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# open-vm-tools doesn't replicate shared source files for different modules;
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# instead, files are kept in shared locations. So define a few useful macros
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# to be able to handle both cases cleanly.
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#
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INCLUDE :=
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ifdef OVT_SOURCE_DIR
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AUTOCONF_DIR := $(OVT_SOURCE_DIR)/modules/linux/shared/autoconf
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VMLIB_PATH = $(OVT_SOURCE_DIR)/lib/$(1)
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INCLUDE += -I$(OVT_SOURCE_DIR)/modules/linux/shared
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INCLUDE += -I$(OVT_SOURCE_DIR)/lib/include
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else
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AUTOCONF_DIR := $(SRCROOT)/shared/autoconf
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INCLUDE += -I$(SRCROOT)/shared
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endif
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VM_UNAME = $(shell uname -r)
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# Header directory for the running kernel
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ifdef LINUXINCLUDE
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HEADER_DIR = $(LINUXINCLUDE)
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else
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HEADER_DIR = /lib/modules/$(VM_UNAME)/build/include
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endif
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BUILD_DIR = $(HEADER_DIR)/..
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DRIVER := vmnet
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PRODUCT := @@PRODUCT@@
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# Grep program
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GREP = /bin/grep
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vm_check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null \
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> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi)
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vm_check_file = $(shell if test -f $(1); then echo "yes"; else echo "no"; fi)
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ifndef VM_KBUILD
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VM_KBUILD := no
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ifeq ($(call vm_check_file,$(BUILD_DIR)/Makefile), yes)
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VM_KBUILD := yes
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endif
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export VM_KBUILD
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endif
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ifndef VM_KBUILD_SHOWN
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ifeq ($(VM_KBUILD), no)
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VM_DUMMY := $(shell echo >&2 "Using standalone build system.")
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else
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VM_DUMMY := $(shell echo >&2 "Using kernel build system.")
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endif
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VM_KBUILD_SHOWN := yes
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export VM_KBUILD_SHOWN
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endif
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ifneq ($(VM_KBUILD), no)
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# If there is no version defined, we are in toplevel pass, not yet in kernel makefiles...
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ifeq ($(VERSION),)
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DRIVER_KO := $(DRIVER).ko
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.PHONY: $(DRIVER_KO)
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auto-build: $(DRIVER_KO)
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cp -f $< $(SRCROOT)/../$(DRIVER).o
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# $(DRIVER_KO) is a phony target, so compare file times explicitly
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$(DRIVER): $(DRIVER_KO)
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if [ $< -nt $@ ] || [ ! -e $@ ] ; then cp -f $< $@; fi
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# Use SUBDIRS on 2.x, 3.x, 4.x. Use M on newer kernels.
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ifeq ($(filter-out 2 3 4,$(firstword $(subst ., ,$(VM_UNAME)))),)
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DIRVAR := SUBDIRS
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else
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DIRVAR := M
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endif
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#
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# Define a setup target that gets built before the actual driver.
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# This target may not be used at all, but if it is then it will be defined
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# in Makefile.kernel
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#
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prebuild:: ;
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postbuild:: ;
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$(DRIVER_KO): prebuild
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$(MAKE) -C $(BUILD_DIR) $(DIRVAR)=$$PWD SRCROOT=$$PWD/$(SRCROOT) \
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MODULEBUILDDIR=$(MODULEBUILDDIR) modules
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$(MAKE) -C $$PWD SRCROOT=$$PWD/$(SRCROOT) \
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MODULEBUILDDIR=$(MODULEBUILDDIR) postbuild
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endif
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vm_check_build = $(shell if $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
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$(CPPFLAGS) $(CFLAGS) $(CFLAGS_KERNEL) $(LINUXINCLUDE) \
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$(EXTRA_CFLAGS) -Iinclude2/asm/mach-default \
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-DKBUILD_BASENAME=\"$(DRIVER)\" \
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-Werror -S -o /dev/null -xc $(1) \
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> /dev/null 2>&1; then echo "$(2)"; else echo "$(3)"; fi)
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CC_WARNINGS := -Wall -Wstrict-prototypes
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CC_OPTS := $(GLOBAL_DEFS) $(CC_WARNINGS) -DVMW_USING_KBUILD
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ifdef VMX86_DEVEL
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CC_OPTS += -DVMX86_DEVEL
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endif
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ifdef VMX86_DEBUG
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CC_OPTS += -DVMX86_DEBUG
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endif
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include $(SRCROOT)/Makefile.kernel
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else
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include $(SRCROOT)/Makefile.normal
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endif
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#.SILENT:
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