Re: [LTP] Need help in cross compiling LTP for android

[Maxin B J. <max...@gm...>]

Hi,

On Wed, Mar 7, 2012 at 12:21 PM, Rejish Rajagopala
<rej...@sa...> wrote:
> Hi Maxin,
>
> Thanks for your reply.
>
> I downloaded busybox and super user apk from android market, But its not working.

It's a bit difficult to believe as you  are doubting the integrity of
"Android Market" here :)

> Even I tried cross compiling busybox with Android tool chain. I used the following script to cross compile it.

IMHO, cross compiling LTP for any platform isn't really a nice topic
of discussion in a mailing-list like this.
Your life will be a lot simpler if you try to use the available
"busybox" package in Android Market itself.

> #!/bin/sh
> # Build Busybox against Android's bionic
> # Originally by Dan Fandrich
> #
> # Configure with android_defconfig
> # This file has been tested on Android Froyo (the lack of ttyname_r in
> # the must be patched around) and Gingerbread.
>
> # Point this to the Android root directory; it's used in the defconfig CFLAGS
> export A="/u/android-ndk-r5b"
>
> # Android product being built
> P=android-3
>
> # Toolchain version in use by this version of Android
> GCCVER=4.4.0
>
> export PATH="$A/toolchains/arm-eabi-4.4.0/prebuilt/linux-x86/bin/arm-eabi-$GCCVER:$PATH"
>
> # Set the linker flags; compiler flags are in the defconfig file
> if grep "^CONFIG_STATIC=y" .config >/dev/null ; then
>        # Static linking
>        LDFLAGS="-static -Xlinker -z -Xlinker muldefs -nostdlib $A/platforms/$P/arch-arm/usr/lib/crtbegin_static.o $A/platforms/$P/arch-arm/usr/lib/crtend_android.o -L$A/platforms/$P/arch-arm/usr/lib -L$A/platforms/$P/arch-arm/usr/lib/libm.so -L$A/platforms/$P/arch-arm/usr/lib/libc.so"
>        LDLIBS="m c gcc"
> else
>        # Dynamic linking
>        LDFLAGS="-Xlinker -z -Xlinker muldefs -nostdlib -Bdynamic -Xlinker -Xlinker -dynamic-linker -Xlinker /system/bin/linker -Xlinker -z -Xlinker nocopyreloc -#Xlinker --no-undefined $A/platforms/$P/arch-arm/usr/lib/crtbegin_dynamic.o $A/platforms/$P/arch-arm/usr/lib/crtend_android.o -L$A/platforms/$P/arch-arm/usr/lib/"
>        LDLIBS="dl m c gcc"
> fi
>
> make EXTRA_LDFLAGS="$LDFLAGS" LDLIBS="$LDLIBS" "$@"
>
> In the above script am facing some issue with linkers
> [ LDFLAGS="-Xlinker -z -Xlinker muldefs -nostdlib -Bdynamic -Xlinker -T$A/build/core/armelf.x -Xlinker -dynamic-linker -Xlinker /system/bin/linker -Xlinker -z -Xlinker nocopyreloc -Xlinker --no-undefined $A/out/target/product/$P/obj/lib/crtbegin_dynamic.o $A/out/target/product/$P/obj/lib/crtend_android.o -L$A/out/target/product/$P/obj/lib" ]
>
> That is am not able to set linker properly and so system is failing to recognize it. Can you please look into and suggest me what to do.

Hmm.. The Android toolchain (Android NDK) wasn't really a "developer
friendly" one and it still keep that status. The procedure and helper
scripts doesn't work nice with every NDK releases.  Just start with a
simple hello world program and then proceed to something complex like
LTP.

> Thanks & Regards,
> Rejish

Warm Regards,
Maxin B. John
 ________________________________________
> From: Maxin B John [max...@gm...]
> Sent: Tuesday, March 06, 2012 5:27 PM
> To: Rejish Rajagopala
> Cc: Cyril Hrubis; ltp...@li...
> Subject: Re: [LTP] Need help in cross compiling LTP for android
>
> Hi,
>
> On Mon, Mar 5, 2012 at 6:25 AM, Rejish Rajagopala
> <rej...@sa...> wrote:
>> Hi Cyril,
>> Thanks for your input.
>> I have one more doubt that is if I want to check whether my LTP has been cross compiled properly then how can I confirm that without running the LTP in android phone.
>
> You can copy any one of the cross compiled binaries in LTP (eg:
> testcases/kernel/syscalls/open/open01) to Android device and execute
> it there.
> It is better to have "busybox" ready in your Android device to run LTP
> properly.  If you finds it difficult to cross-compile "Busybox", it is
> available in Android Market also.
>
>> Thanks & Regards,
>> Rejish
>
> Warm Regards,
> Maxin B. John
>  ________________________________________
>> From: Cyril Hrubis [ch...@su...]
>> Sent: Friday, March 02, 2012 6:28 PM
>> To: Rejish Rajagopala
>> Cc: ltp...@li...
>> Subject: Re: [LTP] Need help in cross compiling LTP for android
>>
>> Hi!
>>> + LOGFILE_NAME=2012_Mar_02-14h_25m_52s
>>> + LOGFILE=-l /data/ltp/make_2802_02_2012/results/LTP_RUN_ON-2012_Mar_02-14h_25m_52s.log
>>> + ALT_DIR_RES=1
>>> + PRETTY_PRT= -p
>>> + [ !  ]
>>> + ALT_DIR_OUT=1
>>> + [ !  ]
>>> + [ ! -l /data/ltp/make_2802_02_2012/results/LTP_RUN_ON-2012_Mar_02-14h_25m_52s.log ]
>>> + basename 2012_Mar_02-14h_25m_52s
>>> + FAILED_FILE_NAME=2012_Mar_02-14h_25m_52s
>>> + FAILCMDFILE=-C /data/ltp/make_2802_02_2012/output/LTP_RUN_ON-2012_Mar_02-14h_25m_52s.failed
>>> + [ 0 -eq 1 ]
>>> + [ 1 -eq 1 ]
>>> + [ ! -d /data/ltp/make_2802_02_2012/output ]
>>> + [ 1 -eq 1 ]
>>> + echo INFO: creating /data/ltp/make_2802_02_2012/results directory
>>> INFO: creating /data/ltp/make_2802_02_2012/results directory
>>> + [ ! -d /data/ltp/make_2802_02_2012/results ]
>>> + mkdir -m 777 -p /data/ltp/make_2802_02_2012/tmp
>>> mkdir failed for -m, File exists
>>> + echo FATAL: Unable to make temporary directory /data/ltp/make_2802_02_2012/tmp
>>> FATAL: Unable to make temporary directory /data/ltp/make_2802_02_2012/tmp
>>
>> Hmm, this is strange, mkdir -p must not fail with 'File exists'.
>>
>>> + export TMPTEMPLATE=/data/ltp/make_2802_02_2012/tmp/ltp-XXXXXXXXXX
>>> + mktemp -d /data/ltp/make_2802_02_2012/tmp/ltp-XXXXXXXXXX
>>> + TMP=/data/ltp/make_2802_02_2012/tmp/ltp-hYXbVD3460
>>> + export TMP
>>> + export TMPDIR=/data/ltp/make_2802_02_2012/tmp/ltp-hYXbVD3460
>>> + chmod 777 /data/ltp/make_2802_02_2012/tmp/ltp-hYXbVD3460
>>> + cd /data/ltp/make_2802_02_2012/tmp/ltp-hYXbVD3460
>>> + [ -n  ]
>>> + [ 0 -eq 1 ]
>>> + [ -z  ]
>>> + [ -z  ]
>>> + cat
>>> + + cat /data/ltp/make_2802_02_2012/scenario_groups/default
>>> tr \012
>>
>> ...
>>
>>> + rm -f /data/ltp/make_2802_02_2012/tmp/ltp-hYXbVD3460/cat_ok.3443
>>> rm failed for -f, No such file or directory
>>
>> And this is even much more wrong.
>>
>> I'm not familiar with android but this sugests that you have very
>> crippled busybox or whatever is installed there to provide basic
>> commands like rm, mkdir and so.
>>
>> --
>> Cyril Hrubis
>> ch...@su...
>>
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