topic Linker errors using Intel SGX SDK (2.2.100.48339) in Intel Confidential Computing

Linker errors using Intel SGX SDK (2.2.100.48339)

balguri_m_ — Thu, 10 Jan 2019 05:43:04 GMT

Hi All,

We use SGX SDK for our software. So far we didn't have any issues with Intel SGX SDK till v2.0.101.44281. When we build our software using SGX SDK (2.2.100.48339) following linker errors from the one of the SGX library (sgx_trts.lib)

1>sgx_trts.lib(loadcfg.obj) : error LNK2001: unresolved external symbol __guard_iat_table
1>sgx_trts.lib(loadcfg.obj) : error LNK2001: unresolved external symbol __guard_iat_count
1>sgx_trts.lib(loadcfg.obj) : error LNK2001: unresolved external symbol __guard_longjmp_table
1>sgx_trts.lib(loadcfg.obj) : error LNK2001: unresolved external symbol __guard_longjmp_count

Could you please someone tell me which library we need to include to resolve the above linker issues.

Our software targeted for Win10 - 64bit

Thanks in advance.

Regards,

Madhukar

What version of the compiler

Mark_S_Intel2 — Thu, 10 Jan 2019 22:28:44 GMT

What version of the compiler/linker are you using (version of Visual Studio)?

Hi Mark,

balguri_m_ — Fri, 11 Jan 2019 04:22:40 GMT

Hi Mark,

We are using Visual Studio 2013 for building our software.

Hope setting C/C++ --> Code Generation --> Control Flow Guard to "/guard:cf" will solve this issue. But we need make changes in the project settings to compile on VC2015/VC2017 as this "/guard:cf" switch/option is not available in the VC2013.

Please let us know is there anyway we can build our software using VC2013. If not then we have to move to VC2015/VC2017.

Thanks & Regards,

Madhukar

Hi Madhukar.

Scott_R_Intel — Tue, 15 Jan 2019 13:17:36 GMT

Hi Madhukar.

Unfortunately, support for Visual Studio 2013 was removed in SGX SDK v2.2.100.48339, as noted in the release notes. Support for VS2017 was added at the same time. We would recommend upgrading to VS2017.

Regards.

Scott