libwebsockets/lws-genhash.h:80:18: 错误：字段‘ctx’的类型不完全\
HMAC_CTX ctx;\
^~~
grep -r include_directories libwebsockets/ | grep open
libwebsockets/CMakeLists.txt: include_directories(lib/tls/mbedtls/wrapper/include/openssl)
./libwebsockets/lib/tls/mbedtls/wrapper/include/openssl/ssl.h
make -C libwebsockets/build/ -f mkfile
make clean -C libwebsockets/build/ -f mkfile
[HMAC_CTX ctx has incomplete type · Issue #353 · butor/blackbird · GitHub](https://github.com/butor/blackbird/issues/353 "HMAC_CTX ctx has incomplete type · Issue #353 · butor/blackbird · GitHub")
I am having the same or similar issue on Windows:\
Slightly different, instead of using command line -D definitions I declared it in CMakeLists.txt:
set (OPENSSL_ROOT_DIR "/lib/openssl-1.1.0g")\
set (OPENSSL_CRYPTO_LIBRARY "/lib/openssl-1.1.0g/lib")\
set (OPENSSL_SSL_LIBRARY "/lib/openssl-1.1.0g/lib")\
set (OPENSSL_INCLUDE_DIR "/lib/openssl-1.1.0g/include")
`-DOPENSSL_INCLUDE_DIR=/usr/include/openssl -DOPENSSL_SSL_LIBRARY=/usr/lib/x86_64-linux-gnu/libssl.so.1.0.0 -DOPENSSL_CRYPTO_LIBRARY=/usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0`
for debian 9.x and may be install `libssl1.0-dev`
[root@localhost ~]# ls -al /usr/include/openssl\
lrwxrwxrwx 1 root root 44 12月 17 2020 /usr/include/openssl -> /usr/cntlcenter/libs/openssl/include/openssl
unlink /usr/include/openssl
[root@localhost ~]# rpm -qa |grep openssl \
xmlsec1-openssl-1.2.20-7.el7_4.x86_64\
openssl-libs-1.0.2k-19.el7.ns7.02.x86_64\
openssl-1.0.2k-19.el7.ns7.02.x86_64
yum remove openssl-devel-1.0.2k-19.el7.ns7.02.x86_64
yum install openssl-devel-1.0.2k-19.el7.ns7.02.x86_64
[root@localhost ~]# rpm -qf /usr/include/openssl/ssl.h \
openssl-devel-1.0.2k-19.el7.ns7.02.x86_64
