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38 lines
1.2 KiB
38 lines
1.2 KiB
3 years ago
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cmake_minimum_required (VERSION 3.19...3.20)
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find_package (OpenSSL REQUIRED COMPONENTS Crypto)
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# Store version without a possibly trailing letter.
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string (REGEX MATCH "^([0-9.]+)" version "${OPENSSL_VERSION}")
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# clean-up OpenSSL variables
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unset (OPENSSL_INCLUDE_DIR)
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unset (OPENSSL_CRYPTO_LIBRARY)
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unset (OPENSSL_CRYPTO_LIBRARIES)
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unset (OPENSSL_LIBRARIES)
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unset (OPENSSL_VERSION)
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unset (OPENSSL_FOUND)
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## Specify a range including current OpenSSL version
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string (REGEX MATCH "^([0-9]+)" upper_version "${version}")
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math (EXPR upper_version "${upper_version} + 1")
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find_package (OpenSSL 0.9...${upper_version}.0 COMPONENTS Crypto)
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if (NOT OPENSSL_FOUND)
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message (FATAL_ERROR "Failed to find OpenSSL with version range 0.9...${upper_version}.0")
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endif()
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# clean-up OpenSSL variables
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unset (OPENSSL_INCLUDE_DIR)
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unset (OPENSSL_CRYPTO_LIBRARY)
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unset (OPENSSL_CRYPTO_LIBRARIES)
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unset (OPENSSL_LIBRARIES)
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unset (OPENSSL_VERSION)
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unset (OPENSSL_FOUND)
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## Specify a range excluding current OpenSSL version
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set (range 0.9...<${version})
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find_package (OpenSSL ${range} COMPONENTS Crypto)
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if (OPENSSL_FOUND)
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message (FATAL_ERROR "Unexpectedly find OpenSSL with version range ${range}")
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endif()
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