build failure due to -Werror=jump-misses-init

[aep]

is there any tag that is known to build?

home/aep/consulting/enclaive/edgelessrt/build/3rdparty/openenclave/openenclave-src/include/openenclave/internal/raise.h:86:9: error: jump skips variable initialization [-Werror=jump-misses-init]
   86 |         goto done;                                        \
      |         ^~~~
/home/aep/consulting/enclaive/edgelessrt/build/3rdparty/openenclave/openenclave-src/include/openenclave/internal/raise.h:169:13: note: in expansion of macro ‘OE_RAISE’
  169 |             OE_RAISE(_result_);              \
      |             ^~~~~~~~
/home/aep/consulting/enclaive/edgelessrt/build/3rdparty/openenclave/openenclave-src/host/sgx/loadelf.c:1144:13: note: in expansion of macro ‘OE_CHECK’
 1144 |             OE_CHECK(oe_safe_add_u64(offset, dynamic_rva, &offset));
      |             ^~~~~~~~
/home/aep/consulting/enclaive/edgelessrt/build/3rdparty/openenclave/openenclave-src/host/sgx/loadelf.c:1180:1: note: label ‘done’ defined here
 1180 | done:
      | ^~~~
/home/aep/consulting/enclaive/edgelessrt/build/3rdparty/openenclave/openenclave-src/host/sgx/loadelf.c:1154:11: note: ‘new_relocation_data’ declared here
 1154 |     void* new_relocation_data = NULL;
      |           ^~~~~~~~~~~~~~~~~~~

[thomasten]

Hi, You probably build with gcc, which isn't supported. You must have clang-10 installed before you invoke cmake.

[aep]

hm current clang is version 13. getting an old version to build sounds like alot more work than just removing -Wall

[thomasten]

AFAIK jump-misses-init doesn't exist in clang, but only in gcc. So I guess cmake chose gcc for some reason. Try deleting and recreating the build folder and force clang with cmake -GNinja -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang ... However, it might still not build with another version than clang-10. This is a requirement of the underlying Open Enclave.

[aep]

thanks, that worked. got different errors now.

undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'

but as you said, that's expected. i'll just extract the binaries from the dpkg instead.

btw any reason ert is based on openenclave? Compared to gramine it seems rather immature.

[thomasten]

IMO Open Enclave is the most mature SGX SDK-if you want to write new apps in C/C++. I've not used Gramine for a while. I think it has evolved impressively. In the past it had serious stability, security, and UX issues.