Building external/openssl

[phrakture]

Hello all,

I would like to build the openssl sources from the android platform
with the NDK.

http://android.git.kernel.org/?p=platform/external/openssl.git;a=summary

But I can't seem to accomplish this. After adding an Application.mk
file, there are many compilation issues.

Am I missing some piece of this puzzle? Do I need the entire Android
platform to build one library? Is there any other way to link against
the official Android openssl libs?

Cheers,
Aaron

[Timmmm]

I would also like to know this. The NDK doesn't seem set up to allow
it easily but it should be possible. How far did you get?

[Timmmm]

On Nov 4, 3:49 pm, Timmmm <tdh...@gmail.com> wrote:
> On Oct 14, 9:42 pm, phrakture <aaronmgrif...@gmail.com> wrote:
>
> > Hello all,
>

> > I would like to build theopensslsources from the android platform

> > with the NDK.
>
> >http://android.git.kernel.org/?p=platform/external/openssl.git;a=summary
>
> > But I can't seem to accomplish this. After adding an Application.mk
> > file, there are many compilation issues.

I made a bit of progress and I think I will be able to get it to work.
You need to do this:

# Get the source.
git clone git://android.git.kernel.org/platform/external/openssl.git

# Go into the directory.
cd openssl

# Trick the NDK into thinking this is the project dir. This is the
easiest and only way I could find to do it.
touch AndroidManifest.xml

# Give the NDK build system the Application.mk it needs. I couldn't
find a way to specify this manually, and it seems the jni bit is
hardcoded.
mkdir jni

echo "APP_PROJECT_PATH := $(pwd)" >> jni/Application.mk
echo "APP_BUILD_SCRIPT := $(APP_PROJECT_PATH)/Android.mk" >> jni/
Application.mk

# Edit crypto/Android to fix the include paths.
nano crypto/Android.mk

# Change the last bits to:
#################
LOCAL_C_INCLUDES += \
$(NDK_PROJECT_PATH) \
$(NDK_PROJECT_PATH)/include
# external/zlib

# LOCAL_SHARED_LIBRARIES += libz

#ifneq ($(TARGET_SIMULATOR),true)
# LOCAL_SHARED_LIBRARIES += libdl
#endif

LOCAL_LDLIBS += -lz
# LOCAL_LDLIBS += -ldl
#################

Then it actually starts successfully compiling things, but gets stuck
at some assembly stuff.

[Timmmm]

Aha! I got it to work. Full instructions:

# Get the source.
git clone git://android.git.kernel.org/platform/external/openssl.git
# Go into the directory.
cd openssl
# Trick the NDK into thinking this is the project dir. This is the
easiest and only way I could find to do it.
touch AndroidManifest.xml
# Give the NDK build system the Application.mk it needs. I couldn't
find a way to specify this manually, and it seems the jni bit is
hardcoded.
mkdir jni
echo "APP_PROJECT_PATH := $(pwd)" >> jni/Application.mk
echo "APP_BUILD_SCRIPT := $(APP_PROJECT_PATH)/Android.mk" >> jni/
Application.mk

# Edit all the Android.mk's.
nano crypto/Android.mk
nano apps/Android.mk
nano ssl/Android.mk

# In all of them you need to replace "external/openssl" with "$
(NDK_PROJECT_PATH)". Also in
# crypto/Android.mk you need to comment out the assembly stuff so that
it always uses aes/aes_core.c
# Obviously you won't have any assembly optimisations then, but I
couldn't get them to work. :-/

# Finally run:
path/to/android-ndk-r4b/ndk-build -j2

# libcrypto.so and libssl.so are in
cd libs/armeabi

[Guian]

thanks, that really helps :)

[Guian]

hmm :/

I got some "undefined reference to `ENGINE_cleanup'"
errors at link stage...

I tried to ad engine.eng_lib.c to the crypto/Android.mk compiled files
but I got this :

#error ENGINE is disabled.
because OPENSSL_NO_ENGINE is defined

How can I enable 'ENGINE' so I could use ENGINE_cleanup ?

On 5 nov, 19:24, Timmmm <tdh...@gmail.com> wrote: