Building OpenSSL with Emscripten

[Sunghyun Park]

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 at oracle.com> 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 at umich.edu> 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
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