It sounds like this is this bug: https://issuetracker.google.com/74084489
(there are some patches linked that you could try)

- Dan


On Mon, Mar 26, 2018 at 8:16 AM <simon.e...@u-blox.com> wrote:

> Hi Dan,
>
> thanks for looking in to this.
> Attached is the full output of the mma command at the end of my
> step-by-step reproduction.
>
> Simon
>
>
> Am Montag, 19. März 2018 23:09:53 UTC+1 schrieb Dan Willemsen:
>>
>> Are there any other messages between the line that starts with FAILED and
>> the first "failed to create expected output file" message? That message
>> just means that the underlying tool didn't create the output files as
>> expected (the message has been cleaned up a bit on master).
>>
>> - Dan
>>
>> On Mon, Mar 19, 2018 at 9:42 AM <simon...@u-blox.com> wrote:
>>
>>> Hello,
>>>
>>> I think I found some sort of bug when trying to build the HIDL library
>>> inside a ZFS pool.
>>>
>>> we use ZFS in our build system, wehave the AOSP source in a ZFS pool.
>>> We are currently starting to switch to the HIDL interface and I stumbled
>>> over a (suspected) bug when trying to build our driver with the new
>>> interface.
>>> It only ever appears when I have the AOSP source inside the ZFS pool, it
>>> seems not to happen when the source is checked out on the harddisk.
>>> I have confirmed this behaviour on multiple machines.
>>> The AOSP build system seems to trip over something and seems to not be
>>> able to create an output file.
>>> However, manually creating the file (with "touch") is no problem.
>>> The error I get is
>>>
>>> *failed to create expected output file:
>>> out/soong/.temp/sbox552673235/.intermediates/hardware/interfaces/gnss/1.0/android.hardware.gnss@1.0_genc++_headers/gen/android/hardware/gnss/1.0/BsGnssXtra.h*
>>>
>>> The filename changes for all the files it wanted to create.
>>>
>>> Could you please confirm this bug and maybe start investigating on your
>>> side?
>>>
>>> This is a simple step-by-step reproduction of the bug:
>>>
>>> #Create a growing file for ZFS
>>> truncate -s 100G test
>>> #Create a new ZFS pool on the created file
>>> sudo zpool create test `pwd`/test
>>> #Just give let anyone do whatever they want to this pool for this demo
>>> sudo chmod 777 /test
>>> #Checkout AOSP in this pool
>>> cd /test
>>> repo init -u https://android.googlesource.com/platform/manifest -b
>>> android-8.1.0_r18
>>> #Let it sync, this will take a while...
>>> repo sync -j3
>>> #Init AOSP environment
>>> . ./build/envsetup
>>> lunch #choose hikey-userdebug
>>> #Create demo module
>>> mkdir -p hardware/test
>>> cd hardware/test
>>> #test.cpp seems to be needed for the module to have to actually do some
>>> work
>>> touch test.cpp
>>>
>>> cat <<EOF > Android.mk
>>> LOCAL_PATH:= \$(call my-dir)
>>> include \$(CLEAR_VARS)
>>>
>>> LOCAL_INCLUDES += \$(LOCAL_PATH)
>>>
>>> LOCAL_CFLAGS += \$(APF_CFLAGS)
>>>
>>> LOCAL_MODULE_RELATIVE_PATH := hw
>>> LOCAL_MODULE := android.hardware.gnss@1.0-service-test
>>> LOCAL_SRC_FILES := \
>>> test.cpp
>>> LOCAL_SHARED_LIBRARIES := \
>>>      liblog \
>>>      libcutils \
>>>      libdl \
>>>      libbase \
>>>      libutils \
>>>      libhwbinder \
>>>      libhidlbase \
>>>      libhidltransport \
>>>      android.hardware.gnss@1.0
>>>
>>> include \$(BUILD_STATIC_LIBRARY)
>>> EOF
>>> #Finally: build demo module
>>> mma
>>>
>>>
>>> #Produces following errors (snippet):
>>> # failed to create expected output file:
>>> out/soong/.temp/sbox552673235/.intermediates/hardware/interfaces/gnss/1.0/android.hardware.gnss@1.0_genc
>>> ++_headers/gen/android/hardware/gnss/1.0/BsGnssXtra.h
>>> # failed to create expected output file:
>>> out/soong/.temp/sbox552673235/.intermediates/hardware/interfaces/gnss/1.0/android.hardware.gnss@1.0_genc
>>> ++_headers/gen/android/hardware/gnss/1.0/IGnssXtraCallback.h
>>> # failed to create expected output file:
>>> out/soong/.temp/sbox552673235/.intermediates/hardware/interfaces/gnss/1.0/android.hardware.gnss@1.0_genc
>>> ++_headers/gen/android/hardware/gnss/1.0/IHwGnssXtraCallback.h
>>> # failed to create expected output file:
>>> out/soong/.temp/sbox552673235/.intermediates/hardware/interfaces/gnss/1.0/android.hardware.gnss@1.0_genc
>>> ++_headers/gen/android/hardware/gnss/1.0/BnHwGnssXtraCallback.h
>>> # failed to create expected output file:
>>> out/soong/.temp/sbox552673235/.intermediates/hardware/interfaces/gnss/1.0/android.hardware.gnss@1.0_genc
>>> ++_headers/gen/android/hardware/gnss/1.0/BpHwGnssXtraCallback.h
>>> # failed to create expected output file:
>>> out/soong/.temp/sbox552673235/.intermediates/hardware/interfaces/gnss/1.0/android.hardware.gnss@1.0_genc
>>> ++_headers/gen/android/hardware/gnss/1.0/BsGnssXtraCallback.h
>>> #]
>>> #ninja: build stopped: subcommand failed.
>>> #13:49:41 ninja failed with: exit status 1
>>>
>>>
>>>
>>>
>>> Thanks
>>>
>>>
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