1# Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved. 2# 3# This program is free software; you can redistribute it and/or 4# modify it under the terms of the GNU General Public License as 5# published by the Free Software Foundation; either version 2 of 6# the License, or (at your option) any later version. 7# 8# This program is distributed in the hope that it would be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program; if not, write the Free Software Foundation, 15# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 16# 17# Author: Alexey Kodanev <alexey.kodanev@oracle.com> 18# 19# Include it to build kernel modules. 20# REQ_VERSION_MAJOR and REQ_VERSION_PATCH must be defined beforehand. 21# 22 23$(if $(REQ_VERSION_MAJOR),,$(error You must define REQ_VERSION_MAJOR)) 24$(if $(REQ_VERSION_PATCH),,$(error You must define REQ_VERSION_MINOR)) 25 26ifeq ($(WITH_MODULES),no) 27SKIP := 1 28else 29ifeq ($(LINUX_VERSION_MAJOR)$(LINUX_VERSION_PATCH),) 30SKIP := 1 31else 32SKIP ?= $(shell \ 33 [ "$(LINUX_VERSION_MAJOR)" -gt "$(REQ_VERSION_MAJOR)" ] || \ 34 [ "$(LINUX_VERSION_MAJOR)" -eq "$(REQ_VERSION_MAJOR)" -a \ 35 "$(LINUX_VERSION_PATCH)" -ge "$(REQ_VERSION_PATCH)" ]; echo $$?) 36endif 37endif 38 39ifneq ($(SKIP),0) 40MAKE_TARGETS := $(filter-out %.ko, $(MAKE_TARGETS)) 41endif 42 43ifneq ($(filter install clean,$(MAKECMDGOALS)),) 44MAKE_TARGETS := $(filter-out %.ko, $(MAKE_TARGETS)) 45MAKE_TARGETS += $(wildcard *.ko) 46endif 47 48CLEAN_TARGETS += .dep_modules 49 50MODULE_SOURCES := $(patsubst %.ko,%.c,$(filter %.ko, $(MAKE_TARGETS))) 51 52# Ignoring the exit status of commands is done to be forward compatible with 53# kernel internal API changes. The user-space test will return TCONF, if it 54# doesn't find the module (i.e. it wasn't built either due to kernel-devel 55# missing or module build failure). 56%.ko: %.c .dep_modules ; 57 58.dep_modules: $(MODULE_SOURCES) 59 @echo "Building modules: $(MODULE_SOURCES)" 60 -$(MAKE) -C $(LINUX_DIR) M=$(abs_srcdir) 61 rm -rf *.mod.c *.o *.ko.unsigned modules.order .tmp* .*.ko .*.cmd Module.symvers 62 @touch .dep_modules 63