aarch64-linux compile problem

Sat Apr 29 01:27:33 UTC 2017

with NDK r15beta2 (out around I/O), strace builds out of the box for arm.
(i.e. you can skip the "hack a couple of things" step in my earlier mail.)

for aarch64, you'll want to change the CFLAGS line to

  export CFLAGS="-std=gnu99 -fPIE -pie"

because the aarch64 kernel headers use __uint128_t for the fpsimd `vregs`,
which is a gnu extension.

On Fri, Jan 27, 2017 at 7:36 PM, enh <enh at google.com> wrote:

> On Fri, Jan 27, 2017 at 7:16 PM, enh <enh at google.com> wrote:
> > sadly building stuff with the NDK can be fun at the best of times, and
> > strace is actually a pretty hairy project to build. we're working on
> > improving the NDK (see below) and i'll try to make sure we add some
> > documentation for what the traditional "configure && make" looks like
> > with the NDK.
> >
> > anyway, here's how to build a 32-bit ARM strace 4.15 binary with the NDK:
> >
> > * download NDK r14 beta 1 from https://github.com/android-ndk/ndk/wiki
> >
> > * unpack it
> >
> > * generate a standalone
> > toolchain[https://developer.android.com/ndk/guides/
> standalone_toolchain.html]
> > using unified headers[https://android.googlesource.com/platform/ndk/
> +/master/docs/UnifiedHeaders.md]:
> >
> >   ./android-ndk-r14-beta1/build/tools/make_standalone_toolchain.py
> > --unified-headers --arch arm --api 24 --install-dir /tmp/ndk-arm
> >
> > * download strace 4.15
> >
> > * unpack it
> >
> > * hack a couple of things:
> >
> >   1. strace seems to need mtd/mtd-abi.h and mtd/ubi-user.h for mtd.c.
> > they're not in r14beta1 so you'll need to copy them from
> > bionic[https://android.googlesource.com/platform/
> bionic/+/master/libc/kernel/uapi/mtd/]
> > into /tmp/ndk-arm/sysroot/usr/include/mtd/ (which you'll have to
> > create).
> >
> >   this is already fixed in r14 beta 2, but that's held up in QA. sorry.
>
> (the NDK maintainer points out that we do however make canary builds
> available[https://android.googlesource.com/platform/ndk/+/master/docs/
> ContinuousBuilds.md]
> --- note that the downloads default to darwin, so you'll want to
> change that combo box too if you're following the instructions but use
> linux.)
>
> >   2. strace assumes the glibc name __key for the struct ipc64_perm
> > field.  add these lines to sys/ipc.h in /tmp/ndk-arm:
> >
> > +#if defined(__USE_GNU)
> > +#define __key key
> > +#define __seq seq
> > +#endif
> >
> >   i'll add that to
> > bionic[https://android-review.googlesource.com/#/c/329669/] and it'll
> > be in a future NDK release.
> >
> > * setup:
> >
> >   export CC=/tmp/ndk-arm/bin/arm-linux-androideabi-clang
> >   export CFLAGS="-fPIE -fPIC -pie"
> >   ./configure --host=arm-linux-androideabi
> >   make
> >
> > * push the resulting "strace" to your device and use it.
> >
> >   $ adb push strace /data/local/tmp/strace
> >   $ adb shell /data/local/tmp/strace -V
> >   strace -- version 4.15
> >   $
> >
> >   (i actually traced a real executable, but the output of -V was less
> > spammy for the purposes of this email.)
> >
> > On Thu, Jan 26, 2017 at 7:31 AM, Larry Dickson <tjoccam at tjoccam.com>
> wrote:
> >> Hello strace developers,
> >>
> >> After discovering that the Samsung S2 T710 Android tablet is really 32
> bit,
> >> we attempted to cross-compile strace using the NDK in 32 bits. Again I
> went
> >> for android-ndk-r13b-linux-x86_64.zip, which is in
> >>
> >>
> >> https://developer.android.com/ndk/downloads/index.html
> >>
> >> and brought it up according to
> >>
> >> http://nickdesaulniers.github.io/blog/2016/07/01/android-cli/
> >>
> >> (except for the source fetch, which was just a download). OK.
> >>
> >>
> >> Instead of aarch64-linux-android-gcc I used arm-linux-androideabi-gcc,
> and
> >> similar for strip; instead of --host=aarch64-linux I used
> --host=arm-linux.
> >> ./configure worked but not make, which failed quickly on
> >>
> >> print_msgbuf.c:35:21: fatal error: sys/msg.h: No such file or directory
> >>
> >> Are there any known paths to successful compilation of strace for the
> >> Android?
> >>
> >> Larry Dickson
> >> Space Sciences Corporation
> >>
> >> On Jan 24, 2017, at 8:15 AM, Larry Dickson <tjoccam at tjoccam.com> wrote:
> >>
> >> Hello strace developers,
> >>
> >> We need strace on our Samsung S2 T710 Android tablet, and I tried to
> >> cross-compile it on our Dell XPS-13 (Ubuntu 14.04 LTS) laptop. I went
> for
> >> android-ndk-r13b-linux-x86_64.zip, which is in
> >>
> >> https://developer.android.com/ndk/downloads/index.html
> >>
> >> and brought it up according to
> >>
> >> http://nickdesaulniers.github.io/blog/2016/07/01/android-cli/
> >>
> >> (except for the source fetch, which was just a download). OK. Then I
> >> downloaded strace-4.15.tar.xz from sourceforge and followed Muzso
> >>
> >> http://muzso.hu/2012/04/21/how-to-compile-strace-for-use-
> on-an-android-phone-running-an-arm-cpu
> >>
> >> except that I fixed the names and substituted aarch64-linux for
> arm-linux in
> >> the ./configure, which worked. (I used aarch64-linux instead of
> arm-linux
> >> because our device CPU is an Exynos 5433, which is an ARMx8-A.)
> >>
> >> The make failed with error
> >>
> >> # error struct flock64 definition not found in <linux/fcntl.h>
> >>
> >> which is an error discussed nowhere on the web, though I can find
> struct . .
> >> . fcntl.h> in three source files.
> >>
> >> Thank you for any help you can give!
> >>
> >> Larry Dickson
> >> Space Sciences Corporation
> >>
> >>
> >>
> >> ------------------------------------------------------------
> ------------------
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> >> _______________________________________________
> >> Strace-devel mailing list
> >> Strace-devel at lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/strace-devel
> >>
> >
> >
> >
> > --
> > Elliott Hughes - http://who/enh - http://jessies.org/~enh/
> > Android native code/tools questions? Mail me/drop by/add me as a
> reviewer.
>
>
>
> --
> Elliott Hughes - http://who/enh - http://jessies.org/~enh/
> Android native code/tools questions? Mail me/drop by/add me as a reviewer.
>

-- 
Elliott Hughes - http://who/enh - http://jessies.org/~enh/
Android native code/tools questions? Mail me/drop by/add me as a reviewer.
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