83 lines
2.8 KiB
Makefile
83 lines
2.8 KiB
Makefile
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#
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# Unless you and Broadcom execute a separate written software license
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# agreement governing use of this software, this software is licensed to
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# you under the terms of the GNU General Public License version 2 (the
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# "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php,
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# with the following added to such license:
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#
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# As a special exception, the copyright holders of this software give
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# you permission to link this software with independent modules, and to
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# copy and distribute the resulting executable under terms of your
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# choice, provided that you also meet, for each linked independent
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# module, the terms and conditions of the license of that module. An
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# independent module is a module which is not derived from this
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# software. The special exception does not apply to any modifications
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# of the software.
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#
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# $Id: Makefile.linux-kmodule-3_6,v 1.2 Broadcom SDK $
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# $Copyright: (c) 2006 Broadcom Corp.
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# All Rights Reserved.$
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# Due to the extensive use of driver libraries, the SDK usually builds
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# kernel modules from a precompiled object. To avoid various warnings
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# and conflicts, the pre-compiled object must be named differently
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# from the target module, and the object file itself should be
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# appended with "_shipped".
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# If a module exports any symbols, then the exporting source file must
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# be compiled within the kernel source tree for correct generation of
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# module symbol versions. The symbol source file should be passed to
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# this Makefile via the MODULE_SYM variable.
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MODULE := $(MOD_NAME).o
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KMODULE := $(MOD_NAME).ko
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PRE_COMPILED_OBJ := obj_$(MOD_NAME).o
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obj-m := $(MODULE)
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$(MOD_NAME)-y := $(MODULE_SYM) $(PRE_COMPILED_OBJ)
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ifeq (,$(CROSS_COMPILE))
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export CROSS_COMPILE
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endif
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SAVE_CFLAGS := ${CFLAGS}
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include $(SDK)/make/Make.config
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PWD := $(shell pwd)
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ifneq ($(ARCH),)
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# ELDK does not seem to `automatically' define ARCH where other gccs may
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A := ARCH=$(ARCH)
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export ARCH
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endif
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# Provide an option in case kernel was built in separate directory
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KERNBLDDIR ?= $(KERNDIR)
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# Standard SDK include path for building source files that export
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# kernel symbols.
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override EXTRA_CFLAGS = -I${SDK}/include -I${SDK}/systems/linux/kernel/modules/include -I${SDK}/systems/bde/linux/include
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# The precopiled object needs a dummy command file to avoid warnings
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# from the Kbuild scripts (modpost stage).
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# Kernels before 2.6.17 do not support external module symbols files,
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# so we create a dummy to prevent build failures.
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$(KMODULE):
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rm -f *.o *.ko .*.cmd
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rm -fr .tmp_versions
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ln -s $(LIBDIR)/$(MODULE) $(PRE_COMPILED_OBJ)_shipped
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echo "suppress warning" > .$(PRE_COMPILED_OBJ).cmd
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$(MAKE) -C $(KERNBLDDIR) CROSS_COMPILE=$(CROSS_COMPILE) M=$(PWD) modules
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if [ ! -f Module.symvers ]; then echo "old kernel (pre-2.6.17)" > Module.symvers; fi
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cp -f $(KMODULE) $(LIBDIR)
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rm -f $(PRE_COMPILED_OBJ)_shipped
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EXTRA_CFLAGS = $(CFLAGS)
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CFLAGS := ${SAVE_CFLAGS}
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