Android cross compiling C with no configure file -


i've started cross compile couple of c applications android. i've done image conversion software using following pseudo-instructions:

  • build android toolchain
  • compile automake , autoconf
  • set cc , cxx environment variables
  • build source package (delete configure, configure.sub, configure.guess, run autoconf configure.ac > configure, run configure cflags using arm-linux-androideabi, make , make install)

i trying ocr library written in c. problem running library has no configure, configure.guess, or configure.sub. has makefile.

i not familiar c, there different process should following in situation?

the ./configure step:

cflags=’-march=armv7-a –mfloat-abi=softfp’ ./configure –prefix=/home/user/downloads/install/usr/local –host=arm-eabi –enable-shared=no –with-modules --enable-delegate-build

is there different process should following in situation?

not really. mean, if plan work android standalone toolchain, need is:

  1. create toolchain ad hoc target, e.g --platform=android-9
  2. add toolchain directory path (for convenience)
  3. export sysroot path, e.g. export sysroot=/tmp/my-android-toolchain/sysroot (for convenience)
  4. set c compiler (export cc="arm-linux-androideabi-gcc --sysroot $sysroot") , archiver, if target static library (export ar=arm-linux-androideabi-ar)

then depends how makefile has been written, i.e targets? influential environment variables? etc. in practice, if default target fits need, need run make while overriding c flags set target architecture (armv7 here):

make cflags="-march=armv7-a"

that's it. repeat other archs (armeabi, x86, etc) if needed.

you can see complete example jsmn - lightweight json parse written in c, here: http://git.io/ndk-jsmn.

i've set of slides cover topic may find useful.


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