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Check for required libzstd APIs in cmake

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It's very unlikely that anyone uses a zstd version this old, but if they do fail early.
This commit is contained in:
sfan5 2021-09-01 10:37:38 +02:00
parent d1624a5521
commit 70dafcf5da
1 changed files with 16 additions and 0 deletions
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16
cmake/Modules/FindZstd.cmake
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@ -4,6 +4,22 @@ find_path(ZSTD_INCLUDE_DIR NAMES zstd.h)
find_library(ZSTD_LIBRARY NAMES zstd) find_library(ZSTD_LIBRARY NAMES zstd)
if(ZSTD_INCLUDE_DIR AND ZSTD_LIBRARY)
# Check that the API we use exists
include(CheckSymbolExists)
unset(HAVE_ZSTD_INITCSTREAM CACHE)
set(CMAKE_REQUIRED_INCLUDES ${ZSTD_INCLUDE_DIR})
set(CMAKE_REQUIRED_LIBRARIES ${ZSTD_LIBRARY})
check_symbol_exists(ZSTD_initCStream zstd.h HAVE_ZSTD_INITCSTREAM)
unset(CMAKE_REQUIRED_INCLUDES)
unset(CMAKE_REQUIRED_LIBRARIES)
if(NOT HAVE_ZSTD_INITCSTREAM)
unset(ZSTD_INCLUDE_DIR CACHE)
unset(ZSTD_LIBRARY CACHE)
endif()
endif()
include(FindPackageHandleStandardArgs) include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Zstd DEFAULT_MSG ZSTD_LIBRARY ZSTD_INCLUDE_DIR) find_package_handle_standard_args(Zstd DEFAULT_MSG ZSTD_LIBRARY ZSTD_INCLUDE_DIR)