Compilation error with AWS SDK 1.9

[marco-ceriani]

Problem:

The compilation of the encryption sdk fails when using latest 1.9.x versions of the AWS SDK. They recently switched the compilation of c libraries (e.g. as aws-c-common) to static linkage always, regardless of the value of BUILD_SHARED_LIB. But the config.cmake they produce is wrong, since it still depends on BUILD_SHARED_LIB, and produces an invalid path when building as shared libraries.

The result is the following error

Performing configure step for 'encryption_sdk'
CMake Error at <install_prefix>/aws-c-common/cmake/aws-c-common-config.cmake:8 (include):
  include could not find load file:

    <install_prefix>/aws-c-common/cmake/shared/aws-c-common-targets.cmake
Call Stack (most recent call first):
  CMakeLists.txt:38 (find_package)

The path cmake/shared/aws-c-common-targets.cmake does not exist, since the library was compiled statically. A file exists under cmake/static/aws-c-common-targets.cmake.

I already opened an issue on the upstream project aws/aws-sdk-cpp#1695.

[alex-chew]

Thanks for reaching out. Can you try building aws-c-common as a shared library separately, using -DBUILD_SHARED_LIB=on (i.e. independent of aws-sdk-cpp), and then try building the Encryption SDK again?

[marco-ceriani]

Hello Alex. I will try to compile the aws-c-common separately in the next days.