ClickHouse/cmake/find_ssl.cmake

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CMake
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#if (OS_LINUX)
option (USE_INTERNAL_SSL_LIBRARY "Set to FALSE to use system *ssl library instead of bundled" ${NOT_UNBUNDLED})
#endif ()
set (OPENSSL_USE_STATIC_LIBS ${USE_STATIC_LIBRARIES})
if (NOT USE_INTERNAL_SSL_LIBRARY)
if (APPLE)
set (OPENSSL_ROOT_DIR "/usr/local/opt/openssl")
# https://rt.openssl.org/Ticket/Display.html?user=guest&pass=guest&id=2232
if (USE_STATIC_LIBRARIES)
message(WARNING "Disable USE_STATIC_LIBRARIES if you have linking problems with OpenSSL on MacOS")
endif ()
endif ()
find_package (OpenSSL)
if (NOT OPENSSL_FOUND)
# Try to find manually.
set (OPENSSL_INCLUDE_PATHS "/usr/local/opt/openssl/include")
set (OPENSSL_PATHS "/usr/local/opt/openssl/lib")
find_path (OPENSSL_INCLUDE_DIR NAMES openssl/ssl.h PATHS ${OPENSSL_INCLUDE_PATHS})
find_library (OPENSSL_SSL_LIBRARY ssl PATHS ${OPENSSL_PATHS})
find_library (OPENSSL_CRYPTO_LIBRARY crypto PATHS ${OPENSSL_PATHS})
if (OPENSSL_SSL_LIBRARY AND OPENSSL_CRYPTO_LIBRARY AND OPENSSL_INCLUDE_DIR)
set (OPENSSL_LIBRARIES ${OPENSSL_SSL_LIBRARY} ${OPENSSL_CRYPTO_LIBRARY})
set (OPENSSL_FOUND 1)
endif ()
endif ()
endif ()
if (NOT OPENSSL_FOUND)
set (USE_INTERNAL_SSL_LIBRARY 1)
set (OPENSSL_ROOT_DIR "${ClickHouse_SOURCE_DIR}/contrib/ssl")
set (OPENSSL_INCLUDE_DIR "${OPENSSL_ROOT_DIR}/include")
if (NOT USE_STATIC_LIBRARIES AND TARGET crypto-shared AND TARGET ssl-shared)
set (OPENSSL_CRYPTO_LIBRARY crypto-shared)
set (OPENSSL_SSL_LIBRARY ssl-shared)
else ()
set (OPENSSL_CRYPTO_LIBRARY crypto)
set (OPENSSL_SSL_LIBRARY ssl)
endif ()
set (OPENSSL_LIBRARIES ${OPENSSL_SSL_LIBRARY} ${OPENSSL_CRYPTO_LIBRARY})
set (OPENSSL_FOUND 1)
endif ()
message (STATUS "Using ssl=${OPENSSL_FOUND}: ${OPENSSL_INCLUDE_DIR} : ${OPENSSL_LIBRARIES}")