ndk - Porting Trickle to android
android ndk location (1)
Para 1., necesitas al menos adaptar configure.in para modificar la parte "feo, feo, hack" (como saciado en los comentarios fuente):
LIBCGUESS=`echo /lib/libc.so.*`
a
LIBCGUESS="/path/to/ndk/platforms/android-${ANDROID_API_LEVEL}/arch-${TARGET_ARCH}/usr/lib/libc.so"
En lugar de usar android-19, debe usar el nivel de API que corresponde al mínimo que desea admitir.
Además, si desea admitir mejor más dispositivos Android, debe adaptar el resto del script para que también pueda compilar de forma cruzada su lib para otras arquitecturas (ahora el NDK es compatible con arm, mips, x86).
Para 2., puede agregar --with-libevent=/path/to/libevent_library/ parameter a la llamada a ./configure . En este caso, dentro de /path/to/libevent_library , debe tener ./lib/libevent.so y ./include/event.h
Estoy tratando de portar Trickle ( https://github.com/mariusaeriksen/trickle ) en android.
Lo que he descubierto hasta ahora es que necesito compilar de forma cruzada las bibliotecas individuales de las que depende esta aplicación, principalmente ''libevent'', usando la cadena de herramientas independiente NDK.
Recibí ayuda de este artículo: http://warpedtimes.wordpress.com/2010/02/03/building-open-source-libraries-with-android-ndk/
Logré compilar de forma cruzada libevent con el siguiente script ''build_android.sh'':
export ANDROID_ROOT=/home/narayan/installations/android-ndk-r9d
export PATH=$PATH:$ANDROID_ROOT/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin
export PATH=$PATH:$ANDROID_ROOT/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/include
#Since it complains about crtbegin and crtend
ln -s $ANDROID_ROOT/platforms/android-19/arch-arm/usr/lib/crtbegin_so.o
ln -s $ANDROID_ROOT/platforms/android-19/arch-arm/usr/lib/crtend_so.o
./configure /
--host=arm-linux-androideabi /
CC=$ANDROID_ROOT/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux- androideabi-gcc /
LD=$ANDROID_ROOT/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ld /
AR=$ANDROID_ROOT/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ar /
RANLIB=$ANDROID_ROOT/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ranlib /
CPPFLAGS="-I$ANDROID_ROOT/platforms/android-19/arch-arm/usr/include/" /
CFLAGS="-nostdlib" /
LDFLAGS="-Wl,-rpath-link=$ANDROID_ROOT/platforms/android-19/arch-arm/usr/lib/ -L$ANDROID_ROOT/platforms/android-19/arch-arm/usr/lib/" /
LIBS="-lc -lgcc -L$ANDROID_ROOT/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.8"
Ahora, cuando hago lo mismo con la aplicación de goteo, obtengo el siguiente error al ejecutar el mismo script que el anterior dentro del directorio de proyectos de goteo:
checking build system type... x86_64-unknown-linux-gnu
checking host system type... arm-unknown-linux-androideabi
checking target system type... arm-unknown-linux-androideabi
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking whether make sets $(MAKE)... yes
checking for working aclocal-1.4... missing
checking for working autoconf... missing
checking for working automake-1.4... missing
checking for working autoheader... missing
checking for working makeinfo... missing
checking for arm-linux-androideabi-gcc... /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... yes
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc accepts -g... yes
checking for /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc option to accept ANSI C... none needed
checking for a sed that does not truncate output... /bin/sed
checking for egrep... grep -E
checking for ld used by /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc... /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ld
checking if the linker (/home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ld) is GNU ld... yes
checking for /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ld option to reload object files... -r
checking for BSD-compatible nm... /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-nm -B
checking whether ln -s works... yes
checking how to recognise dependent libraries... pass_all
checking how to run the C preprocessor... /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking dlfcn.h usability... yes
checking dlfcn.h presence... yes
checking for dlfcn.h... yes
checking for arm-linux-androideabi-g++... arm-linux-androideabi-g++
checking whether we are using the GNU C++ compiler... yes
checking whether arm-linux-androideabi-g++ accepts -g... yes
checking how to run the C++ preprocessor... arm-linux-androideabi-g++ -E
checking for arm-linux-androideabi-g77... no
checking for arm-linux-androideabi-f77... no
checking for arm-linux-androideabi-xlf... no
checking for arm-linux-androideabi-frt... no
checking for arm-linux-androideabi-pgf77... no
checking for arm-linux-androideabi-fort77... no
checking for arm-linux-androideabi-fl32... no
checking for arm-linux-androideabi-af77... no
checking for arm-linux-androideabi-f90... no
checking for arm-linux-androideabi-xlf90... no
checking for arm-linux-androideabi-pgf90... no
checking for arm-linux-androideabi-epcf90... no
checking for arm-linux-androideabi-f95... no
checking for arm-linux-androideabi-fort... no
checking for arm-linux-androideabi-xlf95... no
checking for arm-linux-androideabi-ifc... no
checking for arm-linux-androideabi-efc... no
checking for arm-linux-androideabi-pgf95... no
checking for arm-linux-androideabi-lf95... no
checking for arm-linux-androideabi-gfortran... no
checking for g77... no
checking for f77... no
checking for xlf... no
checking for frt... no
checking for pgf77... no
checking for fort77... no
checking for fl32... no
checking for af77... no
checking for f90... no
checking for xlf90... no
checking for pgf90... no
checking for epcf90... no
checking for f95... no
checking for fort... no
checking for xlf95... no
checking for ifc... no
checking for efc... no
checking for pgf95... no
checking for lf95... no
checking for gfortran... no
checking whether we are using the GNU Fortran 77 compiler... no
checking whether accepts -g... no
checking the maximum length of command line arguments... 32768
checking command to parse /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-nm -B output from /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc object... ok
checking for objdir... .libs
checking for arm-linux-androideabi-ar... /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ar
checking for arm-linux-androideabi-ranlib... /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ranlib
checking for arm-linux-androideabi-strip... arm-linux-androideabi-strip
checking if /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc static flag works... yes
checking if /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc supports -fno-rtti -fno-exceptions... no
checking for /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc option to produce PIC... -fPIC
checking if /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc PIC flag -fPIC works... yes
checking if /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc supports -c -o file.o... yes
checking whether the /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc linker (/home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ld) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
configure: creating libtool
appending configuration tag "CXX" to libtool
checking for ld used by arm-linux-androideabi-g++... /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ld
checking if the linker (/home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ld) is GNU ld... yes
checking whether the arm-linux-androideabi-g++ linker (/home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ld) supports shared libraries... yes
checking for arm-linux-androideabi-g++ option to produce PIC... -fPIC
checking if arm-linux-androideabi-g++ PIC flag -fPIC works... yes
checking if arm-linux-androideabi-g++ supports -c -o file.o... yes
checking whether the arm-linux-androideabi-g++ linker (/home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ld) supports shared libraries... yes
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
appending configuration tag "F77" to libtool
checking whether make sets $(MAKE)... (cached) yes
checking for arm-linux-androideabi-ranlib... (cached) /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ranlib
checking for a BSD-compatible install... /usr/bin/install -c
checking for socket in -lsocket... no
checking for gethostbyname in -lnsl... no
checking for dlopen in -ldl... yes
checking for err in -lc... yes
checking for ANSI C header files... (cached) yes
checking for sys/wait.h that is POSIX.1 compatible... yes
checking if libc defines __progname... yes
checking sys/ioctl.h usability... yes
checking sys/ioctl.h presence... yes
checking for sys/ioctl.h... yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking err.h usability... yes
checking err.h presence... yes
checking for err.h... yes
checking time.h usability... yes
checking time.h presence... yes
checking for time.h... yes
checking for unistd.h... (cached) yes
checking for stdint.h... (cached) yes
checking netinet/in.h usability... yes
checking netinet/in.h presence... yes
checking for netinet/in.h... yes
checking asm/poll.h usability... yes
checking asm/poll.h presence... yes
checking for asm/poll.h... yes
checking for an ANSI C-conforming const... yes
checking for pid_t... yes
checking for size_t... yes
checking whether time.h and sys/time.h may both be included... yes
checking for u_int64_t... yes
checking for u_int32_t... yes
checking for u_int16_t... yes
checking for u_int8_t... yes
checking for in_addr_t... no
checking whether /home/narayan/installations/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc needs -traditional... no
checking return type of signal handlers... void
checking for socket... yes
checking for strlcat... yes
checking for strlcpy... yes
checking for daemon... yes
checking for setenv... yes
checking for strsep... yes
checking for sendfile... yes
checking for libevent... yes
checking if underscores are needed for symbols... no
checking if we can access libc without dlopen... no
checking if we can access libc with libc.so... no
checking if we can access libc with /usr/lib/libc.so*... no
configure: error: Couldn''t figure out how to access libc
Las líneas correspondientes en configure.in son:
AC_MSG_CHECKING(if we can access libc without dlopen)
AC_TRY_RUN(
#include <dlfcn.h>
#include <stdio.h>
int
main(int argc, char **argv)
{
void *dh;
dh = (void *)-1L;
if (dlsym(dh, "printf") != NULL || dlsym(dh, "_printf") != NULL)
exit(0);
exit(1);
}, [AC_MSG_RESULT(yes)
AC_DEFINE(NODLOPEN)
HAVEMETHOD=yes], AC_MSG_RESULT(no), AC_MSG_RESULT(no))
if test "$HAVEMETHOD" = "no"; then
dnl ugly, ugly hack
LIBCGUESS=`echo /lib/libc.so.*`
USRLIBCGUESS=`echo /usr/lib/libc.so*`
if test "$USRLIBCGUESS" = "/usr/lib/libc.so.*"; then
USRLIBCGUESS=""
fi
if test "$LIBCGUESS" = "/lib/libc.so.*"; then
LIBCGUESS=""
fi
for TESTLIB in libc.so `echo $USRLIBCGUESS` `echo $LIBCGUESS`
do
AC_MSG_CHECKING(if we can access libc with $TESTLIB)
AC_TRY_RUN(
#include <dlfcn.h>
#include <stdio.h>
int
main(int argc, char **argv)
{
void *dh;
if (dlopen("$TESTLIB", RTLD_LAZY) != NULL)
exit(0);
exit(1);
}, [AC_MSG_RESULT(yes)
AC_DEFINE_UNQUOTED(DLOPENLIBC, "$TESTLIB")
HAVEMETHOD=yes], AC_MSG_RESULT(no), AC_MSG_RESULT(no))
if test "$HAVEMETHOD" = "yes"; then
break
fi
done
fi
if test "$HAVEMETHOD" = "no"; then
AC_MSG_ERROR(Couldn''t figure out how to access libc)
fi
He intentado con la documentación oficial de NDK pero no pude obtener mucha ayuda.
Entonces tengo un par de preguntas:
- ¿Cómo resolver el error anterior?
- Cómo decirle al compilador que vincule la biblioteca compartida (libevent) que he compilado de forma cruzada para Android antes para generar la aplicación de línea de comandos ejecutable final para Android.
¿Y también es posible exportar goteo en Android?
Estaría encantado si pudiera obtener ayuda o al menos enlaces a algunos artículos que me ayudarían con este problema.
Gracias :)