CMake Error at CMakeLists.txt:360 (add_subdirectory)

[shinomontaz]

Found error on build by a guide https://github.com/gost-engine/engine/blob/master/INSTALL.md:

$ cmake -DCMAKE_BUILD_TYPE=Release ..

-- Setting OpenSSL root: /usr/local/ssl
-- Found OpenSSL application: /usr/local/ssl/bin/openssl
-- LITTLE_ENDIAN
-- No Test2::V0 perl module (engine and provider tests skipped)
CMake Error at CMakeLists.txt:360 (add_subdirectory):
The source directory

/opt/engine/libprov

does not contain a CMakeLists.txt file.

INSTALL TARGETS - target lib_gost_engine has PUBLIC_HEADER files but no PUBLIC_HEADER DESTINATION.
-- Configuring incomplete, errors occurred!

Versions:

$ openssl version
OpenSSL 3.0.2 15 Mar 2022 (Library: OpenSSL 3.0.2 15 Mar 2022)

$ cmake -version
cmake version 3.18.4

CMake suite maintained and supported by Kitware (kitware.com/cmake).

Exported env vars:
PKG_CONFIG_PATH=/usr/local/ssl/lib64/pkgconfig/
OPENSSL_ROOT_DIR=/usr/local/ssl

Something forgotten in manual or there is some trick to build?
Thanks.

[beldmit]

You need to checkout the libprov submodule.