Hello! Over the last few days I cannot succeed building an android toolchain. Initial data: Ubuntu 11.10 (11.04 also tried) gcc 4.6.1 binutils-2.21.1 glibc-2.14 with glibc-ports-2.13, linuxthreads and linuxthreads_db plugins TARGET=arm-linux-androideabi PREFIX=/opt/android-9-toolchain/ndk/ #(not original ndk) SYSROOT=/opt/android-9-toolchain/sysroot SYSROOT has three symlinks to android ndk includes: $SYSROOT/usr/include/asm -> $NDK/platforms/android-9/arch-arm/usr/include/asm $SYSROOT/usr/include/asm-generic -> $NDK/platforms/android-9/arch-arm/usr/include/asm-generic/ $SYSROOT/usr/include/linux -> $NDK/platforms/android-9/arch-arm/usr/include/linux/ So, it seems like all requirements are satisfied... Ok. As far as I know the usual strategy of building toolchain is following: 1. build binutils 2. build 1st gcc 3. build libc by means of 1st gcc 4. build final gcc by means of 1st gcc Binutils has been configured as follows: ../configure --prefix=$PREFIX --target=$TARGET , built fine and installed to $PREFIX But I encountered a problem building 1st gcc. It has been configured as follows: ../configure --prefix=$PREFIX --target=$TARGET --enable-languages=c --disable-threads Also, "-Dinhibit_libc -D__gthr_posix_h" has been appended to the variable TARGET_LIBGCC2_CFLAGS located in GCC_DIR/gcc/config/arm/t-linux-androideabi. I read it would inhibit all libc-related code during compilation... And it ends up with following: [............] the static library. */"; echo "GROUP ( libgcc_s.so.1 libgcc.a )" ) > armv7-a/libgcc_s.so /opt/android-9-toolchain/ndk/arm-linux-androideabi/bin/ld: cannot find -lc collect2: ld returned 1 exit status make[4]: *** [libgcc_s.so] Error 1 [............] As I understand the compilation (at least of some part) has been succeeded, but linkage failed. Strange that linker tries to link something with libc. There mustn't be any libc-code because of "inhibit_libc" hack... Have I missed something? ANY helpful links related to building android (or even any arm) toolchain are welcome as well. Thank you in advance! ______________________ Alexey Umnov umnoff@xxxxxxxxx
