Re: Building OpenSSL with Emscripten

[Sunghyun Park <sunggg@xxxxxxxxx>]

Hi, all. Thanks for your help, I could finish compilation to the end. 

However, athough I successfully compiled with _no-asm_ options, I found a problem when loading the compiled library in the 3rd party code base.

When looking into the source code, the definition of some function seems to require a specific preprocessor to be compiled. 

(For example, PEM_write_bio_DSAPrivateKey needs '#define OPENSSL_FIPS'.)

I installed openssl-1.0.2r.tar.gz and only provided no-asm for configuration.

Am I missing some dependencies or necessary options?

The error I'm facing is as follows:

error: undefined symbol: AES_ctr128_encrypt

warning: To disable errors for undefined symbols use `-s ERROR_ON_UNDEFINED_SYMBOLS=0`

error: undefined symbol: AES_set_encrypt_key

error: undefined symbol: BIO_ctrl

error: undefined symbol: BIO_free

error: undefined symbol: BIO_new

error: undefined symbol: BIO_s_mem

error: undefined symbol: BN_bn2bin

error: undefined symbol: BN_free

error: undefined symbol: BN_is_bit_set

error: undefined symbol: BN_new

error: undefined symbol: BN_num_bits

error: undefined symbol: BN_set_word

error: undefined symbol: CRYPTO_free

error: undefined symbol: CRYPTO_malloc

error: undefined symbol: DSA_free

error: undefined symbol: DSA_generate_key

error: undefined symbol: DSA_generate_parameters_ex

error: undefined symbol: DSA_new

error: undefined symbol: EC_KEY_free

error: undefined symbol: EC_KEY_generate_key

error: undefined symbol: EC_KEY_get0_group

error: undefined symbol: EC_KEY_get0_public_key

error: undefined symbol: EC_KEY_new_by_curve_name

error: undefined symbol: EC_KEY_set_asn1_flag

error: undefined symbol: EC_POINT_point2oct

....

Any advice would be a great help!

Thank you.

On Thu, May 9, 2019 at 10:43 PM Dr Paul Dale <paul.dale@xxxxxxxxxx> wrote:

Configure with the _no-asm_ option.

It will be a **lot** slower.

Pauli

-- 
Dr Paul Dale | Cryptographer | Network Security & Encryption 
Phone +61 7 3031 7217
Oracle Australia

On 10 May 2019, at 3:33 pm, Sunghyun Park <sunggg@xxxxxxxxx> wrote:

Nice to meet you all :)

I faced a problem while building assembly code in OpenSSL (e.g., crypto/x86_64cpuid.s) with Emscripten. 

Since Emscripten does not support compilation for assembly code (As far as I know), I'm wondering if there is any version of OpenSSL that does not require compiling assembly code.

Or, if there is anyone who experienced the similar problem, please share your experience. 

Thank you!

--

Best, Sung

--

Best, Sung