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# Copyright The OpenTelemetry Authors
# SPDX-License-Identifier: Apache-2.0
find_package(Microsoft.GSL CONFIG QUIET)
set(Microsoft.GSL_PROVIDER "find_package")
if(NOT Microsoft.GSL_FOUND)
set(_Microsoft.GSL_SUBMODULE_DIR "${opentelemetry-cpp_SOURCE_DIR}/third_party/ms-gsl")
if(EXISTS "${_Microsoft.GSL_SUBMODULE_DIR}/.git")
FetchContent_Declare(
"gsl"
SOURCE_DIR "${_Microsoft.GSL_SUBMODULE_DIR}"
)
set(Microsoft.GSL_PROVIDER "fetch_source")
else()
FetchContent_Declare(
"gsl"
GIT_REPOSITORY "https://github.com/microsoft/GSL.git"
GIT_TAG "${ms-gsl_GIT_TAG}"
)
set(Microsoft.GSL_PROVIDER "fetch_repository")
endif()
set(GSL_TEST OFF CACHE BOOL "" FORCE)
set(GSL_INSTALL ${OPENTELEMETRY_INSTALL} CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(gsl)
# Set the Microsoft.GSL_VERSION variable from the git tag.
string(REGEX REPLACE "^v([0-9]+\\.[0-9]+\\.[0-9]+)$" "\\1" Microsoft.GSL_VERSION "${ms-gsl_GIT_TAG}")
endif()
if(NOT TARGET Microsoft.GSL::GSL)
message(FATAL_ERROR "A required Microsoft.GSL target Microsoft.GSL::GSL was not imported")
endif()
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