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. 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. ------------------------------------------------------------------------------ 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
