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From: http://www.x2on.de/2010/02/01/tutorial-iphone-app-with-compiled-openssl-library/
UPDATE 2010-02-26: I have updated OpenSSL to 0.9.8m
This is a tutorial for using self-compiled builds of the OpenSSL-library on the iPhone. You can build apps with XCode and the official SDK from Apple with this. I also made a small example-app for using the libraries with XCode and the iPhone/iPhone-Simulator. You can also download the precompiled OpenSSL-library (0.9.8m-beta1).
Create OpenSSL Libary:
* Download OpenSSL Sourcecode
* Build OpenSSL for i368 iPhoneSimulator:
ocd openssl-0.9.8m
mkdir openssl_arm
mkdir openssl_i386
./config --openssldir=/Users/
o Edit Makefile:
+ Change CC = cc to:
CC= /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.0
+ Add as first item to CFLAG:
-isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.2.sdk
o Change in crypto/ui/ui_openssl.c
static volatile sig_atomic_t intr_signal;
to
static volatile int intr_signal;
for preventing building error
o Build it:
make
make install
o Your libcrypto.a and libssl.a are in the folder openssl_i368/lib
o Rename the two files to libcrypto_i386.a and libssl_i386.a
* Build OpenSSL for arm iPhoneOS:
o Edit Makefile:
+ Search and replace openssl_i386 with openssl_arm
+ Change -arch i386 in CFLAG to:
-arch armv6
+ Change
CC= /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.0
to
CC= /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.0
+ Change
-isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.2.sdk
to
-isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.2.sdk
o Build it:
make
make install
o Your libcrypto.a and libssl.a are in the folder openssl_arm/lib
o Rename the two files to libcrypto_arm.a and libssl_arm.a
Edit your iPhone-XCode project:
* Copy the “include” folder from OpenSSL into your project-folder
* Copy the libcrypto_*.a and libss_*.a files into your project-folder
* Drag the libcrypto_*.a and libss_*.a files into your XCode Framework Folder-Tree
* Open the Build-Info from your “Target” (Righclick on Target – Get Info)
* Change Library Search Paths to
$(inherited) "$(SRCROOT)"
* Change User Header Search Paths to include
* Activate Always Search User Paths
Enjoy OpenSSL on the iPhone!
I have made an iPhone OS 3.1.2 XCode Project with OpenSSL 0.9.8m (Beta1) Libaries. The examples uses the MD5-algorithm to calculate an md5 hash from an UITextfield.
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