This is a follow up to an old email (https://lists.gnu.org/archive/html/autoconf/2013-10/msg00002.html). AOSP has added an x86_64 target, so I'm trying to configure for it. First, I run my setenv-android.sh script to set paths and tools. An output is shown below. Then I try to configure: $ cd lame-3.99.5 $ ./configure --build=`./config.guess` --host=x86_64-linux-androideabi checking build system type... i686-apple-darwin12.5.0 checking host system type... Invalid configuration `x86_64-linux-androideabi': system `androideabi' not recognized configure: error: /bin/sh ./config.sub x86_64-linux-androideabi failed $ ./configure --build=`./config.guess` --host=x86_64-linux-android checking build system type... i686-apple-darwin12.5.0 checking host system type... Invalid configuration `x86_64-linux-android': system `android' not recognized configure: error: /bin/sh ./config.sub x86_64-linux-android failed $ ./configure --build=`./config.guess` checking build system type... i686-apple-darwin12.5.0 checking host system type... i686-apple-darwin12.5.0 checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... ./install-sh -c -d checking for gawk... no checking for mawk... no checking for nawk... no checking for awk... awk checking whether make sets $(MAKE)... yes checking whether to enable maintainer-specific portions of Makefiles... no checking for style of include used by make... GNU checking for gcc... x86_64-linux-android-gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... configure: error: in `/Users/jwalton/Desktop/lame-3.99.5': configure: error: cannot run C compiled programs. If you meant to cross compile, use `--host'. See `config.log' for more details What triplet should I be using? Is there a list of triplets anywhere for common mobile devices? How do I configure for x86_64 Android? Thanks in advance. ********** $ . ./setenv-android.sh Using toolchain /opt/android-ndk-r10d/toolchains/x86_64-4.9/prebuilt/darwin-x86_64/bin ANDROID_NDK_ROOT: /opt/android-ndk-r10d ANDROID_EABI: x86_64-4.9 ANDROID_ARCH: arch-x86_64 ANDROID_API: android-21 ANDROID_SYSROOT: /opt/android-ndk-r10d/platforms/android-21/arch-x86_64 ANDROID_TOOLCHAIN: /opt/android-ndk-r10d/toolchains/x86_64-4.9/prebuilt/darwin-x86_64/bin ANDROID_FLAGS: ANDROID_STL_INC: /opt/android-ndk-r10d/sources/cxx-stl/stlport/stlport/ ANDROID_STL_LIB: /opt/android-ndk-r10d/sources/cxx-stl/stlport/libs/x86_64/libstlport_shared.so $ echo $CC x86_64-linux-android-gcc $ which x86_64-linux-android-gcc /opt/android-ndk-r10d/toolchains/x86_64-4.9/prebuilt/darwin-x86_64/bin/x86_64-linux-android-gcc $ export CFLAGS="--sysroot=$ANDROID_SYSROOT" $ export CXXFLAGS="--sysroot=$ANDROID_SYSROOT" _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf