On Fri, Jan 27, 2017 at 7:16 PM, enh <e...@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 <tjoc...@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 <tjoc...@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 >> >> >> >> ------------------------------------------------------------------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, SlashDot.org! http://sdm.link/slashdot >> _______________________________________________ >> Strace-devel mailing list >> Strace-devel@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. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Strace-devel mailing list Strace-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/strace-devel
