94 lines
3.2 KiB
Makefile
94 lines
3.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
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#
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# (C) COPYRIGHT 2023 ARM Limited. All rights reserved.
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#
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# This program is free software and is provided to you under the terms of the
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# GNU General Public License version 2 as published by the Free Software
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# Foundation, and any use by you of this program is subject to the terms
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# of such GNU license.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, you can access it online at
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# http://www.gnu.org/licenses/gpl-2.0.html.
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#
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#
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KERNEL_SRC ?= /lib/modules/$(shell uname -r)/build
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KDIR ?= $(KERNEL_SRC)
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M ?= $(shell pwd)
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ifeq ($(KDIR),)
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$(error Must specify KDIR to point to the kernel to target))
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endif
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CONFIGS :=
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ifeq ($(MALI_KCONFIG_EXT_PREFIX),)
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ifeq ($(CONFIG_XEN), y)
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ifeq ($(CONFIG_MALI_ARBITER_SUPPORT),y)
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CONFIG_MALI_XEN ?= y
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endif
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endif
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CONFIGS += \
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CONFIG_MALI_XEN
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endif
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#
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# MAKE_ARGS to pass the custom CONFIGs on out-of-tree build
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#
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# Generate the list of CONFIGs and values.
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# $(value config) is the name of the CONFIG option.
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# $(value $(value config)) is its value (y, m).
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# When the CONFIG is not set to y or m, it defaults to n.
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MAKE_ARGS := $(foreach config,$(CONFIGS), \
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$(if $(filter y m,$(value $(value config))), \
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$(value config)=$(value $(value config)), \
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$(value config)=n))
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#
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# EXTRA_CFLAGS to define the custom CONFIGs on out-of-tree build
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#
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# Generate the list of CONFIGs defines with values from CONFIGS.
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# $(value config) is the name of the CONFIG option.
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# When set to y or m, the CONFIG gets defined to 1.
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EXTRA_CFLAGS := $(foreach config,$(CONFIGS), \
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$(if $(filter y m,$(value $(value config))), \
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-D$(value config)=1))
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# The following were added to align with W=1 in scripts/Makefile.extrawarn
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# from the Linux source tree
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CFLAGS_MODULE += -Wall -Werror
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CFLAGS_MODULE += -Wextra -Wunused -Wno-unused-parameter
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CFLAGS_MODULE += -Wmissing-declarations
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CFLAGS_MODULE += -Wmissing-format-attribute
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CFLAGS_MODULE += -Wmissing-prototypes
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CFLAGS_MODULE += -Wold-style-definition
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CFLAGS_MODULE += -Wmissing-include-dirs
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CFLAGS_MODULE += $(call cc-option, -Wunused-but-set-variable)
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CFLAGS_MODULE += $(call cc-option, -Wunused-const-variable)
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CFLAGS_MODULE += $(call cc-option, -Wpacked-not-aligned)
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CFLAGS_MODULE += $(call cc-option, -Wstringop-truncation)
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# The following turn off the warnings enabled by -Wextra
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CFLAGS_MODULE += -Wno-missing-field-initializers
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CFLAGS_MODULE += -Wno-sign-compare
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CFLAGS_MODULE += -Wno-type-limits
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# The following ensures the stack frame does not get larger than a page
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CFLAGS_MODULE += -Wframe-larger-than=4096
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KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1
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all:
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$(MAKE) -C $(KDIR) M=$(M) $(MAKE_ARGS) EXTRA_CFLAGS="$(EXTRA_CFLAGS)" KBUILD_EXTRA_SYMBOLS="$(EXTRA_SYMBOLS)" modules
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modules_install:
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$(MAKE) -C $(KDIR) M=$(M) $(MAKE_ARGS) modules_install
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clean:
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$(MAKE) -C $(KDIR) M=$(M) $(MAKE_ARGS) clean
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