解决 OpenSSL library not found 或者 Your OpenSSL headers do not match your library. Check config.log for details.

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报错如下：

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checking OpenSSL header version... 1010107f (OpenSSL 1.1.1g  21 Apr 2020)
checking for OpenSSL_version... no
checking for OpenSSL_version_num... no
checking OpenSSL library version... not found
configure: error: OpenSSL library not found.

或者:

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checking for openssl... /usr/local/bin/openssl
checking for openssl/opensslv.h... yes
checking OpenSSL header version... 30000000 (OpenSSL 3.0.0 7 sep 2021)
checking for OpenSSL_version... yes
checking for OpenSSL_version_num... yes
checking OpenSSL library version... 1010104f (OpenSSL 1.1.1d  10 Sep 2019)
checking whether OpenSSL's headers match the library... no
configure: error: Your OpenSSL headers do not match your
	library. Check config.log for details.
	If you are sure your installation is consistent, you can disable the check
	by running "./configure --without-openssl-header-check".
	Also see contrib/findssl.sh for help identifying header/library mismatches.

错误的原因就是找不到libcrypto.so或者该文件版本不对。

解决办法：

ssl一般默认是在/usr/local/下，编译的时候指定一下路径就可以通过了。

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CCFLAGS="-I/usr/local/include" LDFLAGS="-L/usr/local/lib" ./configure

如果不知道具体路径可以全盘搜索libcrypto.so文件，找到对应版本，在用上述方法解决。

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find / -name libcrypto.so*
#找到系统所有版本的该文件。