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+# We can build either as part of a standalone Kernel build or as
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+# an external module. Determine which mechanism is being used
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+ifeq ($(MODNAME),)
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+ KERNEL_BUILD := 1
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+else
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+ KERNEL_BUILD := 0
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+endif
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+
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+ifeq ($(KERNEL_BUILD), 1)
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+ # These are configurable via Kconfig for kernel-based builds
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+ # Need to explicitly configure for Android-based builds
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+ AUDIO_BLD_DIR := $(ANDROID_BUILD_TOP)/kernel/msm-4.14
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+ AUDIO_ROOT := $(AUDIO_BLD_DIR)/techpack/audio
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+endif
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+
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+ifeq ($(KERNEL_BUILD), 0)
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+ # These are configurable via Kconfig for kernel-based builds
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+ # Need to explicitly configure for Android-based builds
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+
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+ ifeq ($(CONFIG_ARCH_SDM670), y)
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+ include $(AUDIO_ROOT)/config/sdm670auto.conf
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+ export
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+ INCS += -include $(AUDIO_ROOT)/config/sdm670autoconf.h
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+ endif
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+
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+ ifeq ($(CONFIG_ARCH_SDM855), y)
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+ include $(AUDIO_ROOT)/config/sdm855auto.conf
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+ export
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+ INCS += -include $(AUDIO_ROOT)/config/sdm855autoconf.h
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+ endif
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+endif
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+
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+# As per target team, build is done as follows:
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+# Defconfig : build with default flags
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+# Slub : defconfig + CONFIG_SLUB_DEBUG := y +
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+# CONFIG_SLUB_DEBUG_ON := y + CONFIG_PAGE_POISONING := y
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+# Perf : Using appropriate msmXXXX-perf_defconfig
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+#
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+# Shipment builds (user variants) should not have any debug feature
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+# enabled. This is identified using 'TARGET_BUILD_VARIANT'. Slub builds
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+# are identified using the CONFIG_SLUB_DEBUG_ON configuration. Since
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+# there is no other way to identify defconfig builds, QTI internal
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+# representation of perf builds (identified using the string 'perf'),
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+# is used to identify if the build is a slub or defconfig one. This
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+# way no critical debug feature will be enabled for perf and shipment
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+# builds. Other OEMs are also protected using the TARGET_BUILD_VARIANT
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+# config.
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+
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+############ UAPI ############
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+UAPI_DIR := uapi
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+UAPI_INC := -I$(AUDIO_ROOT)/include/$(UAPI_DIR)
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+
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+############ COMMON ############
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+COMMON_DIR := include
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+COMMON_INC := -I$(AUDIO_ROOT)/$(COMMON_DIR)
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+
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+# for AQT1000 Codec
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+ifeq ($(CONFIG_SND_SOC_AQT1000), m)
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+ AQT1000_CDC_OBJS += aqt1000-regmap.o
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+ AQT1000_CDC_OBJS += aqt1000-utils.o
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+ AQT1000_CDC_OBJS += aqt1000-core.o
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+ AQT1000_CDC_OBJS += aqt1000-irq.o
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+ AQT1000_CDC_OBJS += aqt1000-clsh.o
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+ AQT1000_CDC_OBJS += aqt1000.o
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+ AQT1000_CDC_OBJS += aqt1000-mbhc.o
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+endif
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+
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+LINUX_INC += -Iinclude/linux
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+
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+INCS := $(COMMON_INC) \
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+ $(UAPI_INC)
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+
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+EXTRA_CFLAGS += $(INCS)
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+
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+CDEFINES += -DANI_LITTLE_BYTE_ENDIAN \
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+ -DANI_LITTLE_BIT_ENDIAN \
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+ -DDOT11F_LITTLE_ENDIAN_HOST \
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+ -DANI_COMPILER_TYPE_GCC \
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+ -DANI_OS_TYPE_ANDROID=6 \
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+ -DPTT_SOCK_SVC_ENABLE \
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+ -Wall\
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+ -Werror\
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+ -D__linux__
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+
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+KBUILD_CPPFLAGS += $(CDEFINES)
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+
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+# Currently, for versions of gcc which support it, the kernel Makefile
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+# is disabling the maybe-uninitialized warning. Re-enable it for the
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+# AUDIO driver. Note that we must use EXTRA_CFLAGS here so that it
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+# will override the kernel settings.
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+ifeq ($(call cc-option-yn, -Wmaybe-uninitialized),y)
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+EXTRA_CFLAGS += -Wmaybe-uninitialized
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+endif
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+#EXTRA_CFLAGS += -Wmissing-prototypes
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+
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+ifeq ($(call cc-option-yn, -Wheader-guard),y)
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+EXTRA_CFLAGS += -Wheader-guard
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+endif
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+
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+ifeq ($(KERNEL_BUILD), 0)
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+KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/ipc/Module.symvers
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+KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/dsp/Module.symvers
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+KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/asoc/Module.symvers
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+KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/asoc/codecs/Module.symvers
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+KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/soc/Module.symvers
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+KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/asoc/codecs/aqt1000/Module.symvers
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+endif
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+
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+# Module information used by KBuild framework
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+obj-$(CONFIG_SND_SOC_AQT1000) += aqt1000_cdc_dlkm.o
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+aqt1000_cdc_dlkm-y := $(AQT1000_CDC_OBJS)
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+
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+# inject some build related information
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+DEFINES += -DBUILD_TIMESTAMP=\"$(shell date -u +'%Y-%m-%dT%H:%M:%SZ')\"
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