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cmake: Do not set emulated PROJECT_IS_TOP_LEVEL as cache variable

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Otherwise, downstream projects, which integrate the libsecp256k1 library
using the `add_subdirectory()` command, will be affected.
This commit is contained in:
Hennadii Stepanov
2024-05-11 11:05:12 +01:00
parent 4155e62fcc
commit cae9a7ad14
1 changed files with 5 additions and 4 deletions
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9
CMakeLists.txt
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@@ -18,13 +18,14 @@ project(libsecp256k1
)
if(CMAKE_VERSION VERSION_LESS 3.21)
# Emulates CMake 3.21+ behavior.
get_directory_property(parent_directory PARENT_DIRECTORY)
if(parent_directory)
set(PROJECT_IS_TOP_LEVEL OFF CACHE INTERNAL "Emulates CMake 3.21+ behavior.")
set(${PROJECT_NAME}_IS_TOP_LEVEL OFF CACHE INTERNAL "Emulates CMake 3.21+ behavior.")
set(PROJECT_IS_TOP_LEVEL OFF)
set(${PROJECT_NAME}_IS_TOP_LEVEL OFF)
else()
set(PROJECT_IS_TOP_LEVEL ON CACHE INTERNAL "Emulates CMake 3.21+ behavior.")
set(${PROJECT_NAME}_IS_TOP_LEVEL ON CACHE INTERNAL "Emulates CMake 3.21+ behavior.")
set(PROJECT_IS_TOP_LEVEL ON)
set(${PROJECT_NAME}_IS_TOP_LEVEL ON)
endif()
unset(parent_directory)
endif()