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

报错如下：

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:

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。

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。

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