Comments on: Tutorial: How To Compile OpenSSL for the iPhone

By: ashraf

ashraf — Mon, 23 Aug 2010 09:47:02 +0000

When I try to use the RAND_bytes() function I got the error for missing header files. I found these are in the i386 version but not in arm version of the include directory. What can be done?

#include
#include

By: Eric

Eric — Fri, 11 Jun 2010 08:04:30 +0000

@Don – Sorry not sure. To be honest I haven’t looked at the openssl libraries since I compiled it for v2.2. My guess is it will take some more tweaks in order to work with v3.2 of iOS and the newest openssl library. Unless you need something in particular on latest versions, I can vouch that the compiled libraries attached to this tutorial do work on the iPad.

By: Don Williams

Don Williams — Thu, 10 Jun 2010 16:13:26 +0000

Hi Eric,

Thank you for this tutorial. I’m having trouble building this using Xcode 3.2 SDK.

After making the necessary changes, and typing “make”, I get the following error:

/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.0 -I. -I.. -I../include -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.2.sdk -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -arch armv6 -O3 -fomit-frame-pointer -DL_ENDIAN -c -o cryptlib.o cryptlib.c
In file included from ../include/openssl/bio.h:67,
from cryptlib.h:74,
from cryptlib.c:117:
/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.2.sdk/usr/include/stdarg.h:4:25: error: stdarg.h: No such file or directory
make[1]: *** [cryptlib.o] Error 1
make: *** [build_crypto] Error 1

Any idea how I can fix this?

I am using Mac OS X Snow Leopard 10.6.3 on an iMac 27″ with Intel Core i7, Xcode 3.2 SDK.

By: Gabriel

Gabriel — Thu, 10 Jun 2010 06:02:00 +0000

Hei Eric.
Thanks for responding me. iOS…for me is this at the moment something like a black box First I want to understand how to develop on my Mac

So,what I have to do if I want to use openssl on the mac plattform

thank you for helping me

By: Eric

Eric — Thu, 10 Jun 2010 02:37:10 +0000

@Gabriel – openssl is not included in iOS. This is why I have supplied these steps to add it to your application via static libraries. I’d suggest try downloading the openssl_tutorial and take a look how to include static libraries to your application.

By: Gabriel

Gabriel — Tue, 08 Jun 2010 14:08:15 +0000

Hello,
firstly thanks a lot for your Tutorial. But I have a big problem. I’m new to mac (development) and does not know how to include the library in my source files.
Since I’ve read that libssl is part of the OS, I’ve included the dylib from the System (Add -> Existing Frameworks… -> libssl.dylib)
But what I have to include? I’ve tried libssh.h, but this fails!

By: Eric Tung

Eric Tung — Sun, 11 Apr 2010 04:55:42 +0000

Thanks for the tutorial!

To get openssl-1.0.0 to build, I had to add the no-asm config option (0.9.8n didn’t need it).

By: shigeya

shigeya — Thu, 25 Mar 2010 05:16:53 +0000

Thanks for helpful info.

I created a script to generate a combined library. I placed it at:

http://github.com/shigeyas/build-openssl-iphone

By: Joonas Kekoni

Joonas Kekoni — Mon, 08 Mar 2010 11:42:56 +0000

Ok I have cooked up the spell: 1st compile for arm as described above. go to install directory.

mv libssl.a libssl-arm.a
mv libcrypto.a libcrypto-arm.a

run configure again. Find CC= cc and change it to:

CC= /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.0

Find CFLAG and add to the BEGINNING!!:

-isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneOS2.2.sdk

(No other changes needed, since target is allready i386.) make clean make make install go to target directory

mv libssl.a libssl-i386.a
mv libcrypto.a libcrypto-i386.a

lipo libssl-arm.a libssl-i386.a -create -output libssl.a
lipo libcrypto-arm.a libcrypto-i386.a  -create -output libcrypto.a

(NOTE: There may be typing errors above. Check that the paths actually exists.)

By: Joonas Kekoni

Joonas Kekoni — Mon, 08 Mar 2010 10:55:15 +0000

Building on i386 emulator however requires
some special spell I do not know.

Just using openssl build on target will not do.
This seems to be happening when trying to link
on i386 on OSX 10.6:


  "_fopen$UNIX2003", referenced from:
      _BIO_new_file in libcrypto.a(bss_file.o)
      _file_ctrl in libcrypto.a(bss_file.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status

The lipo trick does not help in here,
since the problem is in the underlying library.

I do not know a spell to fix this.

Does anyone do?