Unexpected empty string with FetchContent-method

[tastytea]

I'm getting the error Unexpected empty string, originating from

hunter/cmake/modules/hunter_apply_gate_settings.cmake

Line 18 in 5a0b657

hunter_assert_not_empty_string("${HUNTER_CONFIGURATION_TYPES}")

. It works when I set HUNTER_CONFIGURATION_TYPES manually.

I do not get an error if I use the manual method.

• I've read Brief overview section and do understand basic concepts. Yes
• I've read F.A.Q. section and there is no solution to my problem there. Yes
• I've read Code of Conduct, I promise to be polite and will do my best at being constructive. Yes
• I've read Reporting bugs section carefully. Yes
• I've checked that all the hunter_add_package/find_package API used by me in the example is the same as in documentation. Yes
• I'm using latest Hunter URL/SHA1. Yes

• I've created SSCCE reproducing the issue:

# CMakeLists.txt
cmake_minimum_required(VERSION 3.14)
set(HUNTER_PACKAGES PocoCpp)
include(FetchContent)
FetchContent_Declare(SetupHunter GIT_REPOSITORY https://github.com/cpp-pm/gate)
FetchContent_MakeAvailable(SetupHunter)

project(foo)
find_package(Poco REQUIRED Foundation CONFIG)

• I've created SSCCE GitHub repository to reproduce the issue:
  • https://github.com//

Here is the log until first error reported by Hunter, option HUNTER_STATUS_DEBUG is ON:

• build.log

I've checked that the first error in logs IS NOT external.build.failed. Yes

• I'm building on Linux.
• I'm using system CMake
• CMake version: <3.14.6>

• I'm not using toolchain

I'm using the next command line on generate step:

cmake -DHUNTER_STATUS_DEBUG=ON

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