1. 環境
在 Ubuntu 16.4.5 TLS 版本中編譯和測試通過。
下載最新的源代碼需要git，若沒有安裝git可以使用下面命令進行安裝：
sudo apt-get install git -y
另外，還有一些編譯的依賴庫，相關安裝命令如下：
sudo apt-get install cmake -y
sudo apt-get install openssl -y
sudo apt-get install libssl-dev -y
2. 編譯及安裝
2.1 下載源碼
git clone https://github.com/warmcat/libwebsockets.git
2.2 進入源碼目錄
cd libwebsockets
2.3 創建編譯目錄並執行CMake
創建編譯目錄build，並進入，相關命令如下：
mkdir build
cd build
執行cmake，命令如下：
cmake ..
執行結果，如下所示：
cgs@ubuntu:~/libwebsockets/build$ cmake ..
-- The C compiler identification is GNU 5.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- CMAKE_TOOLCHAIN_FILE=''
-- Found Git: /usr/bin/git
Git commit hash: v3.1.0-65-gafbf40c
-- Performing Test LWS_HAVE_inline
-- Performing Test LWS_HAVE_inline - Success
-- Performing Test LWS_HAVE___inline__
-- Performing Test LWS_HAVE___inline__ - Success
-- Performing Test LWS_HAVE___inline
-- Performing Test LWS_HAVE___inline - Success
-- Performing Test LWS_HAVE_BZERO
-- Performing Test LWS_HAVE_BZERO - Success
-- Looking for fork
-- Looking for fork - found
-- Looking for getenv
-- Looking for getenv - found
-- Looking for malloc
-- Looking for malloc - found
-- Looking for memset
-- Looking for memset - found
-- Looking for realloc
-- Looking for realloc - found
-- Looking for socket
-- Looking for socket - found
-- Looking for strerror
-- Looking for strerror - found
-- Looking for vfork
-- Looking for vfork - found
-- Looking for execvpe
-- Looking for execvpe - found
-- Looking for getifaddrs
-- Looking for getifaddrs - found
-- Looking for snprintf
-- Looking for snprintf - found
-- Looking for _snprintf
-- Looking for _snprintf - not found
-- Looking for _vsnprintf
-- Looking for _vsnprintf - not found
-- Looking for getloadavg
-- Looking for getloadavg - found
-- Looking for atoll
-- Looking for atoll - found
-- Looking for _atoi64
-- Looking for _atoi64 - not found
-- Looking for _stat32i64
-- Looking for _stat32i64 - not found
-- Looking for dlfcn.h
-- Looking for dlfcn.h - found
-- Looking for fcntl.h
-- Looking for fcntl.h - found
-- Looking for in6addr.h
-- Looking for in6addr.h - not found
-- Looking for memory.h
-- Looking for memory.h - found
-- Looking for netinet/in.h
-- Looking for netinet/in.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stdlib.h
-- Looking for stdlib.h - found
-- Looking for strings.h
-- Looking for strings.h - found
-- Looking for string.h
-- Looking for string.h - found
-- Looking for sys/prctl.h
-- Looking for sys/prctl.h - found
-- Looking for sys/socket.h
-- Looking for sys/socket.h - found
-- Looking for sys/sockio.h
-- Looking for sys/sockio.h - not found
-- Looking for sys/stat.h
-- Looking for sys/stat.h - found
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for unistd.h
-- Looking for unistd.h - found
-- Looking for vfork.h
-- Looking for vfork.h - not found
-- Looking for sys/capability.h
-- Looking for sys/capability.h - not found
-- Looking for malloc.h
-- Looking for malloc.h - found
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for cap_set_flag in cap
-- Looking for cap_set_flag in cap - not found
-- Looking for 4 include files stdlib.h, ..., float.h
-- Looking for 4 include files stdlib.h, ..., float.h - found
-- Performing Test LWS_HAS_INTPTR_T
-- Performing Test LWS_HAS_INTPTR_T - Success
-- Performing Test LWS_HAS_PTHREAD_SETNAME_NP
-- Performing Test LWS_HAS_PTHREAD_SETNAME_NP - Success
-- Performing Test LWS_HAS_GETOPT_LONG
-- Performing Test LWS_HAS_GETOPT_LONG - Success
-- Performing Test LWS_HAVE_VISIBILITY
-- Performing Test LWS_HAVE_VISIBILITY - Success
Compiling with SSL support
-- Found OpenSSL: /usr/lib/x86_64-linux-gnu/libssl.so;/usr/lib/x86_64-linux-gnu/libcrypto.so (found version "1.0.2g")
OpenSSL include dir: /usr/include
OpenSSL libraries: /usr/lib/x86_64-linux-gnu/libssl.so;/usr/lib/x86_64-linux-gnu/libcrypto.so
-- Looking for openssl/ecdh.h
-- Looking for openssl/ecdh.h - found
-- Looking for SSL_CTX_set1_param
-- Looking for SSL_CTX_set1_param - found
-- Looking for SSL_set_info_callback
-- Looking for SSL_set_info_callback - found
-- Looking for X509_VERIFY_PARAM_set1_host
-- Looking for X509_VERIFY_PARAM_set1_host - found
-- Looking for RSA_set0_key
-- Looking for RSA_set0_key - not found
-- Looking for X509_get_key_usage
-- Looking for X509_get_key_usage - not found
-- Looking for SSL_CTX_get0_certificate
-- Looking for SSL_CTX_get0_certificate - found
-- Looking for SSL_get0_alpn_selected
-- Looking for SSL_get0_alpn_selected - found
-- Looking for SSL_set_alpn_protos
-- Looking for SSL_set_alpn_protos - found
-- Looking for SSL_CTX_set_ciphersuites
-- Looking for SSL_CTX_set_ciphersuites - not found
-- Looking for SSL_CTX_get_extra_chain_certs_only
-- Looking for SSL_CTX_get_extra_chain_certs_only - found
-- Looking for EVP_MD_CTX_free
-- Looking for EVP_MD_CTX_free - not found
-- Looking for ECDSA_SIG_set0
-- Looking for ECDSA_SIG_set0 - not found
-- Looking for BN_bn2binpad
-- Looking for BN_bn2binpad - not found
-- Looking for EVP_aes_128_wrap
-- Looking for EVP_aes_128_wrap - found
-- Looking for TLS_client_method
-- Looking for TLS_client_method - not found
-- Looking for TLSv1_2_client_method
-- Looking for TLSv1_2_client_method - found
-- Performing Test LWS_HAVE_PIPE2
-- Performing Test LWS_HAVE_PIPE2 - Success
-- Performing Test LWS_HAVE_TCP_USER_TIMEOUT
-- Performing Test LWS_HAVE_TCP_USER_TIMEOUT - Success
Searching for OpenSSL executable and dlls
OpenSSL executable: /usr/bin/openssl
GENCERTS = 1
Generating SSL Certificates for the test-server...
Generating a 1024 bit RSA private key
....................................................++++++
....++++++
writing new private key to '/home/cgs/workspace/libwebsockets/build/libwebsockets-test-server.key.pem'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:State or Province Name (full name) [Some-State]:Locality Name (eg, city) []:Organization Name (eg, company) [Internet Widgits Pty Ltd]:Organizational Unit Name (eg, section) []:Common Name (e.g. server FQDN or YOUR name) []:Email Address []:SUCCESSFULLY generated SSL certificate
-- Looking for RPMTools... - rpmbuild NOT FOUND
---------------------------------------------------------------------
Settings: (For more help do cmake -LH <srcpath>)
---------------------------------------------------------------------
LWS_WITH_STATIC = ON
LWS_WITH_SHARED = ON
LWS_WITH_SSL = ON (SSL Support)
LWS_SSL_CLIENT_USE_OS_CA_CERTS = 1
LWS_WITH_WOLFSSL = OFF (wolfSSL/CyaSSL replacement for OpenSSL)
LWS_WITH_MBEDTLS = OFF (mbedTLS replacement for OpenSSL)
LWS_WITHOUT_BUILTIN_SHA1 = OFF
LWS_WITHOUT_BUILTIN_GETIFADDRS = OFF
LWS_WITHOUT_CLIENT = OFF
LWS_WITHOUT_SERVER = OFF
LWS_LINK_TESTAPPS_DYNAMIC = OFF
LWS_WITHOUT_TESTAPPS = OFF
LWS_WITHOUT_TEST_SERVER = OFF
LWS_WITHOUT_TEST_SERVER_EXTPOLL = OFF
LWS_WITHOUT_TEST_PING = OFF
LWS_WITHOUT_TEST_CLIENT = OFF
LWS_WITHOUT_EXTENSIONS = ON
LWS_WITH_LATENCY = OFF
LWS_WITHOUT_DAEMONIZE = ON
LWS_WITH_LIBEV = OFF
LWS_WITH_LIBUV = OFF
LWS_WITH_LIBEVENT = OFF
LWS_IPV6 = OFF
LWS_UNIX_SOCK = OFF
LWS_WITH_HTTP2 = 1
LWS_SSL_SERVER_WITH_ECDH_CERT = OFF
LWS_MAX_SMP = 1
LWS_HAVE_PTHREAD_H = 1
LWS_WITH_CGI = OFF
LWS_HAVE_OPENSSL_ECDH_H = 1
LWS_HAVE_SSL_CTX_set1_param = 1
LWS_HAVE_RSA_SET0_KEY =
LWS_WITH_HTTP_PROXY = OFF
LIBHUBBUB_LIBRARIES =
PLUGINS =
LWS_WITH_ACCESS_LOG = OFF
LWS_WITH_SERVER_STATUS = OFF
LWS_WITH_LEJP = ON
LWS_WITH_LEJP_CONF = ON
LWS_WITH_SMTP = OFF
LWS_WITH_GENERIC_SESSIONS = OFF
LWS_STATIC_PIC = OFF
LWS_WITH_RANGES = OFF
LWS_PLAT_OPTEE = OFF
LWS_WITH_ESP32 = OFF
LWS_WITH_ZIP_FOPS = OFF
LWS_AVOID_SIGPIPE_IGN = OFF
LWS_WITH_STATS = OFF
LWS_WITH_SOCKS5 = OFF
LWS_HAVE_SYS_CAPABILITY_H =
LWS_HAVE_LIBCAP =
LWS_WITH_PEER_LIMITS = OFF
LWS_HAVE_ATOLL = 1
LWS_HAVE__ATOI64 =
LWS_HAVE_STAT32I64 =
LWS_HAS_INTPTR_T = 1
LWS_WITH_EXPORT_LWSTARGETS = ON
---------------------------------------------------------------------
-- Configuring done
-- Generating done
-- Build files have been written to: /home/cgs/workspace/libwebsockets/build
2.4 編譯
編譯命令如下：
make
執行結果，如下所示：
cgs@ubuntu:~/libwebsockets/build$ make
Scanning dependencies of target websockets
[ 1%] Building C object CMakeFiles/websockets.dir/lib/core/alloc.c.o
[ 2%] Building C object CMakeFiles/websockets.dir/lib/core/context.c.o
[ 3%] Building C object CMakeFiles/websockets.dir/lib/core/libwebsockets.c.o
[ 3%] Building C object CMakeFiles/websockets.dir/lib/core/logs.c.o
[ 4%] Building C object CMakeFiles/websockets.dir/lib/misc/base64-decode.c.o
[ 5%] Building C object CMakeFiles/websockets.dir/lib/core/vfs.c.o
[ 6%] Building C object CMakeFiles/websockets.dir/lib/misc/lws-ring.c.o
[ 6%] Building C object CMakeFiles/websockets.dir/lib/core-net/dummy-callback.c.o
[ 7%] Building C object CMakeFiles/websockets.dir/lib/core-net/output.c.o
[ 8%] Building C object CMakeFiles/websockets.dir/lib/core-net/close.c.o
[ 9%] Building C object CMakeFiles/websockets.dir/lib/core-net/network.c.o
[ 9%] Building C object CMakeFiles/websockets.dir/lib/core-net/vhost.c.o
[ 10%] Building C object CMakeFiles/websockets.dir/lib/core-net/pollfd.c.o
[ 11%] Building C object CMakeFiles/websockets.dir/lib/core-net/service.c.o
[ 12%] Building C object CMakeFiles/websockets.dir/lib/core-net/stats.c.o
[ 12%] Building C object CMakeFiles/websockets.dir/lib/core-net/wsi.c.o
[ 13%] Building C object CMakeFiles/websockets.dir/lib/core-net/wsi-timeout.c.o
[ 14%] Building C object CMakeFiles/websockets.dir/lib/core-net/adopt.c.o
[ 15%] Building C object CMakeFiles/websockets.dir/lib/roles/pipe/ops-pipe.c.o
[ 15%] Building C object CMakeFiles/websockets.dir/lib/roles/http/header.c.o
[ 16%] Building C object CMakeFiles/websockets.dir/lib/roles/http/server/parsers.c.o
[ 17%] Building C object CMakeFiles/websockets.dir/lib/roles/h1/ops-h1.c.o
[ 18%] Building C object CMakeFiles/websockets.dir/lib/roles/ws/ops-ws.c.o
[ 18%] Building C object CMakeFiles/websockets.dir/lib/roles/ws/client-ws.c.o
[ 19%] Building C object CMakeFiles/websockets.dir/lib/roles/ws/client-parser-ws.c.o
[ 20%] Building C object CMakeFiles/websockets.dir/lib/roles/ws/server-ws.c.o
[ 21%] Building C object CMakeFiles/websockets.dir/lib/roles/raw-skt/ops-raw-skt.c.o
[ 21%] Building C object CMakeFiles/websockets.dir/lib/roles/raw-file/ops-raw-file.c.o
[ 22%] Building C object CMakeFiles/websockets.dir/lib/misc/lwsac/lwsac.c.o
[ 23%] Building C object CMakeFiles/websockets.dir/lib/misc/lwsac/cached-file.c.o
[ 24%] Building C object CMakeFiles/websockets.dir/lib/core-net/connect.c.o
[ 24%] Building C object CMakeFiles/websockets.dir/lib/core-net/client.c.o
[ 25%] Building C object CMakeFiles/websockets.dir/lib/roles/http/client/client.c.o
[ 26%] Building C object CMakeFiles/websockets.dir/lib/roles/http/client/client-handshake.c.o
[ 27%] Building C object CMakeFiles/websockets.dir/lib/core-net/server.c.o
[ 27%] Building C object CMakeFiles/websockets.dir/lib/roles/listen/ops-listen.c.o
[ 28%] Building C object CMakeFiles/websockets.dir/lib/tls/tls.c.o
[ 29%] Building C object CMakeFiles/websockets.dir/lib/tls/tls-network.c.o
[ 30%] Building C object CMakeFiles/websockets.dir/lib/tls/openssl/tls.c.o
[ 30%] Building C object CMakeFiles/websockets.dir/lib/tls/openssl/x509.c.o
[ 31%] Building C object CMakeFiles/websockets.dir/lib/tls/openssl/ssl.c.o
[ 32%] Building C object CMakeFiles/websockets.dir/lib/tls/tls-server.c.o
[ 33%] Building C object CMakeFiles/websockets.dir/lib/tls/openssl/openssl-server.c.o
[ 33%] Building C object CMakeFiles/websockets.dir/lib/tls/tls-client.c.o
[ 34%] Building C object CMakeFiles/websockets.dir/lib/tls/openssl/openssl-client.c.o
[ 35%] Building C object CMakeFiles/websockets.dir/lib/misc/sha-1.c.o
[ 36%] Building C object CMakeFiles/websockets.dir/lib/roles/h2/http2.c.o
[ 36%] Building C object CMakeFiles/websockets.dir/lib/roles/h2/hpack.c.o
[ 37%] Building C object CMakeFiles/websockets.dir/lib/roles/h2/ops-h2.c.o
[ 38%] Building C object CMakeFiles/websockets.dir/lib/plat/unix/unix-caps.c.o
[ 39%] Building C object CMakeFiles/websockets.dir/lib/plat/unix/unix-file.c.o
[ 39%] Building C object CMakeFiles/websockets.dir/lib/plat/unix/unix-misc.c.o
[ 40%] Building C object CMakeFiles/websockets.dir/lib/plat/unix/unix-init.c.o
[ 41%] Building C object CMakeFiles/websockets.dir/lib/plat/unix/unix-pipe.c.o
[ 42%] Building C object CMakeFiles/websockets.dir/lib/plat/unix/unix-service.c.o
[ 42%] Building C object CMakeFiles/websockets.dir/lib/plat/unix/unix-sockets.c.o
[ 43%] Building C object CMakeFiles/websockets.dir/lib/plat/unix/unix-fds.c.o
[ 44%] Building C object CMakeFiles/websockets.dir/lib/roles/http/server/server.c.o
[ 45%] Building C object CMakeFiles/websockets.dir/lib/roles/http/server/lws-spa.c.o
[ 45%] Building C object CMakeFiles/websockets.dir/lib/event-libs/poll/poll.c.o
[ 46%] Building C object CMakeFiles/websockets.dir/lib/misc/lejp.c.o
[ 47%] Building C object CMakeFiles/websockets.dir/lib/roles/http/server/lejp-conf.c.o
[ 47%] Linking C static library lib/libwebsockets.a
[ 47%] Built target websockets
Scanning dependencies of target test-server-extpoll
[ 48%] Building C object CMakeFiles/test-server-extpoll.dir/test-apps/test-server.c.o
[ 48%] Linking C executable bin/libwebsockets-test-server-extpoll
[ 48%] Built target test-server-extpoll
Scanning dependencies of target test-server
[ 49%] Building C object CMakeFiles/test-server.dir/test-apps/test-server.c.o
[ 50%] Linking C executable bin/libwebsockets-test-server
[ 50%] Built target test-server
Scanning dependencies of target websockets_shared
[ 51%] Building C object CMakeFiles/websockets_shared.dir/lib/core/alloc.c.o
[ 52%] Building C object CMakeFiles/websockets_shared.dir/lib/core/context.c.o
[ 53%] Building C object CMakeFiles/websockets_shared.dir/lib/core/libwebsockets.c.o
[ 53%] Building C object CMakeFiles/websockets_shared.dir/lib/core/logs.c.o
[ 54%] Building C object CMakeFiles/websockets_shared.dir/lib/misc/base64-decode.c.o
[ 55%] Building C object CMakeFiles/websockets_shared.dir/lib/core/vfs.c.o
[ 56%] Building C object CMakeFiles/websockets_shared.dir/lib/misc/lws-ring.c.o
[ 56%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/dummy-callback.c.o
[ 57%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/output.c.o
[ 58%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/close.c.o
[ 59%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/network.c.o
[ 59%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/vhost.c.o
[ 60%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/pollfd.c.o
[ 61%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/service.c.o
[ 62%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/stats.c.o
[ 62%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/wsi.c.o
[ 63%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/wsi-timeout.c.o
[ 64%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/adopt.c.o
[ 65%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/pipe/ops-pipe.c.o
[ 65%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/http/header.c.o
[ 66%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/http/server/parsers.c.o
[ 67%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/h1/ops-h1.c.o
[ 68%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/ws/ops-ws.c.o
[ 68%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/ws/client-ws.c.o
[ 69%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/ws/client-parser-ws.c.o
[ 70%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/ws/server-ws.c.o
[ 71%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/raw-skt/ops-raw-skt.c.o
[ 71%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/raw-file/ops-raw-file.c.o
[ 72%] Building C object CMakeFiles/websockets_shared.dir/lib/misc/lwsac/lwsac.c.o
[ 73%] Building C object CMakeFiles/websockets_shared.dir/lib/misc/lwsac/cached-file.c.o
[ 74%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/connect.c.o
[ 74%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/client.c.o
[ 75%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/http/client/client.c.o
[ 76%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/http/client/client-handshake.c.o
[ 77%] Building C object CMakeFiles/websockets_shared.dir/lib/core-net/server.c.o
[ 77%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/listen/ops-listen.c.o
[ 78%] Building C object CMakeFiles/websockets_shared.dir/lib/tls/tls.c.o
[ 79%] Building C object CMakeFiles/websockets_shared.dir/lib/tls/tls-network.c.o
[ 80%] Building C object CMakeFiles/websockets_shared.dir/lib/tls/openssl/tls.c.o
[ 80%] Building C object CMakeFiles/websockets_shared.dir/lib/tls/openssl/x509.c.o
[ 81%] Building C object CMakeFiles/websockets_shared.dir/lib/tls/openssl/ssl.c.o
[ 82%] Building C object CMakeFiles/websockets_shared.dir/lib/tls/tls-server.c.o
[ 83%] Building C object CMakeFiles/websockets_shared.dir/lib/tls/openssl/openssl-server.c.o
[ 83%] Building C object CMakeFiles/websockets_shared.dir/lib/tls/tls-client.c.o
[ 84%] Building C object CMakeFiles/websockets_shared.dir/lib/tls/openssl/openssl-client.c.o
[ 85%] Building C object CMakeFiles/websockets_shared.dir/lib/misc/sha-1.c.o
[ 86%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/h2/http2.c.o
[ 86%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/h2/hpack.c.o
[ 87%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/h2/ops-h2.c.o
[ 88%] Building C object CMakeFiles/websockets_shared.dir/lib/plat/unix/unix-caps.c.o
[ 89%] Building C object CMakeFiles/websockets_shared.dir/lib/plat/unix/unix-file.c.o
[ 89%] Building C object CMakeFiles/websockets_shared.dir/lib/plat/unix/unix-misc.c.o
[ 90%] Building C object CMakeFiles/websockets_shared.dir/lib/plat/unix/unix-init.c.o
[ 91%] Building C object CMakeFiles/websockets_shared.dir/lib/plat/unix/unix-pipe.c.o
[ 92%] Building C object CMakeFiles/websockets_shared.dir/lib/plat/unix/unix-service.c.o
[ 92%] Building C object CMakeFiles/websockets_shared.dir/lib/plat/unix/unix-sockets.c.o
[ 93%] Building C object CMakeFiles/websockets_shared.dir/lib/plat/unix/unix-fds.c.o
[ 94%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/http/server/server.c.o
[ 95%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/http/server/lws-spa.c.o
[ 95%] Building C object CMakeFiles/websockets_shared.dir/lib/event-libs/poll/poll.c.o
[ 96%] Building C object CMakeFiles/websockets_shared.dir/lib/misc/lejp.c.o
[ 97%] Building C object CMakeFiles/websockets_shared.dir/lib/roles/http/server/lejp-conf.c.o
[ 98%] Linking C shared library lib/libwebsockets.so
[ 98%] Built target websockets_shared
Scanning dependencies of target test-lejp
[ 99%] Building C object CMakeFiles/test-lejp.dir/test-apps/test-lejp.c.o
[ 99%] Linking C executable bin/libwebsockets-test-lejp
[ 99%] Built target test-lejp
Scanning dependencies of target test-client
[ 99%] Building C object CMakeFiles/test-client.dir/test-apps/test-client.c.o
[100%] Linking C executable bin/libwebsockets-test-client
[100%] Built target test-client
2.5 安裝
安裝命令如下（特別需要注意前面的 sudo，否則會出現安裝錯誤）：
sudo make install
執行結果，如下所示：
cgs@ubuntu:~/libwebsockets/build$ sudo make install
[sudo] password for cgs:
[ 47%] Built target websockets
[ 48%] Built target test-server-extpoll
[ 50%] Built target test-server
[ 98%] Built target websockets_shared
[ 99%] Built target test-lejp
[100%] Built target test-client
Install the project...
-- Install configuration: "Release"
-- Installing: /usr/local/lib/pkgconfig/libwebsockets.pc
-- Installing: /usr/local/lib/pkgconfig/libwebsockets_static.pc
-- Installing: /usr/local/include/libwebsockets
-- Installing: /usr/local/include/libwebsockets/lws-dbus.h
-- Installing: /usr/local/include/libwebsockets/lws-stats.h
-- Installing: /usr/local/include/libwebsockets/lws-ws-state.h
-- Installing: /usr/local/include/libwebsockets/lws-genhash.h
-- Installing: /usr/local/include/libwebsockets/lws-protocols-plugins.h
-- Installing: /usr/local/include/libwebsockets/lws-writeable.h
-- Installing: /usr/local/include/libwebsockets/lws-fts.h
-- Installing: /usr/local/include/libwebsockets/lws-ws-close.h
-- Installing: /usr/local/include/libwebsockets/lws-jwk.h
-- Installing: /usr/local/include/libwebsockets/lws-genrsa.h
-- Installing: /usr/local/include/libwebsockets/lws-genec.h
-- Installing: /usr/local/include/libwebsockets/lws-context-vhost.h
-- Installing: /usr/local/include/libwebsockets/lws-service.h
-- Installing: /usr/local/include/libwebsockets/lws-lwsac.h
-- Installing: /usr/local/include/libwebsockets/lws-client.h
-- Installing: /usr/local/include/libwebsockets/lws-cgi.h
-- Installing: /usr/local/include/libwebsockets/lws-callbacks.h
-- Installing: /usr/local/include/libwebsockets/lws-plugin-generic-sessions.h
-- Installing: /usr/local/include/libwebsockets/lws-jose.h
-- Installing: /usr/local/include/libwebsockets/lws-diskcache.h
-- Installing: /usr/local/include/libwebsockets/lws-genaes.h
-- Installing: /usr/local/include/libwebsockets/lws-vfs.h
-- Installing: /usr/local/include/libwebsockets/lws-network-helper.h
-- Installing: /usr/local/include/libwebsockets/lws-esp32.h
-- Installing: /usr/local/include/libwebsockets/lws-adopt.h
-- Installing: /usr/local/include/libwebsockets/lws-spa.h
-- Installing: /usr/local/include/libwebsockets/lws-lejp.h
-- Installing: /usr/local/include/libwebsockets/lws-gencrypto.h
-- Installing: /usr/local/include/libwebsockets/lws-purify.h
-- Installing: /usr/local/include/libwebsockets/lws-timeout-timer.h
-- Installing: /usr/local/include/libwebsockets/lws-tokenize.h
-- Installing: /usr/local/include/libwebsockets/lws-misc.h
-- Installing: /usr/local/include/libwebsockets/lws-logs.h
-- Installing: /usr/local/include/libwebsockets/lws-jwe.h
-- Installing: /usr/local/include/libwebsockets/lws-ws-ext.h
-- Installing: /usr/local/include/libwebsockets/lws-http.h
-- Installing: /usr/local/include/libwebsockets/lws-sha1-base64.h
-- Installing: /usr/local/include/libwebsockets/lws-threadpool.h
-- Installing: /usr/local/include/libwebsockets/lws-ring.h
-- Installing: /usr/local/include/libwebsockets/lws-x509.h
-- Installing: /usr/local/include/libwebsockets/lws-write.h
-- Installing: /usr/local/include/libwebsockets/lws-jws.h
-- Installing: /usr/local/lib/libwebsockets.a
-- Installing: /usr/local/include/libwebsockets.h
-- Installing: /usr/local/include/lws_config.h
-- Installing: /usr/local/include/lws-plugin-ssh.h
-- Installing: /usr/local/lib/libwebsockets.so.14
-- Installing: /usr/local/lib/libwebsockets.so
-- Up-to-date: /usr/local/include/libwebsockets.h
-- Up-to-date: /usr/local/include/lws_config.h
-- Up-to-date: /usr/local/include/lws-plugin-ssh.h
-- Installing: /usr/local/bin/libwebsockets-test-server
-- Installing: /usr/local/bin/libwebsockets-test-server-extpoll
-- Installing: /usr/local/bin/libwebsockets-test-lejp
-- Installing: /usr/local/bin/libwebsockets-test-client
-- Installing: /usr/local/share/libwebsockets-test-server/libwebsockets-test-server.key.pem
-- Installing: /usr/local/share/libwebsockets-test-server/libwebsockets-test-server.pem
-- Installing: /usr/local/share/libwebsockets-test-server/favicon.ico
-- Installing: /usr/local/share/libwebsockets-test-server/leaf.jpg
-- Installing: /usr/local/share/libwebsockets-test-server/candide.zip
-- Installing: /usr/local/share/libwebsockets-test-server/libwebsockets.org-logo.svg
-- Installing: /usr/local/share/libwebsockets-test-server/http2.png
-- Installing: /usr/local/share/libwebsockets-test-server/wss-over-h2.png
-- Installing: /usr/local/share/libwebsockets-test-server/lws-common.js
-- Installing: /usr/local/share/libwebsockets-test-server/test.html
-- Installing: /usr/local/share/libwebsockets-test-server/test.css
-- Installing: /usr/local/share/libwebsockets-test-server/test.js
-- Installing: /usr/local/share/libwebsockets-test-server/private/index.html
-- Installing: /usr/local/share/libwebsockets-test-server/lws-ssh-test-keys
-- Installing: /usr/local/share/libwebsockets-test-server/lws-ssh-test-keys.pub
-- Installing: /usr/local/lib/cmake/libwebsockets/LibwebsocketsConfig.cmake
-- Installing: /usr/local/lib/cmake/libwebsockets/LibwebsocketsConfigVersion.cmake
-- Installing: /usr/local/lib/cmake/libwebsockets/LibwebsocketsTargets.cmake
-- Installing: /usr/local/lib/cmake/libwebsockets/LibwebsocketsTargets-release.cmake
至此，編譯安裝完成。
3. 測試
3.1 測試工具
可以直接使用libwebsockets提供的測試程序直接測試：
- libwebsockets-test-client
- libwebsockets-test-server
- libwebsockets-test-lejp
- libwebsockets-test-server-extpoll
這些測試程序在編譯目錄build/bin中，如下所示：
cgs@ubuntu:~/libwebsockets/build/bin$ ls
libwebsockets-test-client libwebsockets-test-server
libwebsockets-test-lejp libwebsockets-test-server-extpoll
3.2 運行服務端
運行 libwebsockets-test-server 結果如下：
cgs@ubuntu:~/libwebsockets/build/bin$ libwebsockets-test-server
[2019/02/19 17:24:56:3115] NOTICE: libwebsockets test server - license LGPL2.1+SLE
[2019/02/19 17:24:56:3115] NOTICE: (C) Copyright 2010-2018 Andy Green <[email protected]>
Using resource path "/usr/local/share/libwebsockets-test-server"
通過查看端口可以看到，libwebsockets-test-server 測試程序開啓了服務器端口爲7681（當然也可以指定端口和資源，這裏不再細說）
cgs@ubuntu:~/libwebsockets/build/bin$ netstat -ntlp
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:7681 0.0.0.0:* LISTEN 28252/libwebsockets
tcp 0 0 127.0.1.1:53 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN -
tcp6 0 0 ::1:631 :::* LISTEN -
3.3 運行客戶端
客戶端運行命令格式如下：
libwebsockets-test-client <server address> [--port=<p>] [--ssl] [-k] [-v <ver>] [-d <log bitfield>] [-l]
運行 libwebsockets-test-client 結果如下：
cgs@ubuntu:~/libwebsockets/build/bin$ libwebsockets-test-client 127.0.0.1 --port=7681
[2019/02/19 17:28:36:0051] NOTICE: libwebsockets test client - license LGPL2.1+SLE
[2019/02/19 17:28:36:0052] NOTICE: (C) Copyright 2010-2018 Andy Green <[email protected]>
[2019/02/19 17:28:36:0052] NOTICE: SSL disabled
[2019/02/19 17:28:36:0052] NOTICE: Cert must validate correctly (use -s to allow selfsigned)
[2019/02/19 17:28:36:0052] NOTICE: Requiring peer cert hostname matches
[2019/02/19 17:28:36:0370] NOTICE: created client ssl context for default
[2019/02/19 17:28:36:0371] NOTICE: using mode (ws)
[2019/02/19 17:28:36:0371] NOTICE: dumb: connecting
[2019/02/19 17:28:36:0374] NOTICE: mirror: connecting
[2019/02/19 17:28:36:0381] NOTICE: mirror: LWS_CALLBACK_CLIENT_ESTABLISHED
[2019/02/19 17:28:36:0381] NOTICE: opened mirror connection with 24792 lifetime
[2019/02/19 17:28:52:7160] NOTICE: closing mirror session
[2019/02/19 17:28:52:7164] NOTICE: mirror: LWS_CALLBACK_CLOSED mirror_lifetime=0, rxb 0, rx_count 0
[2019/02/19 17:28:52:7169] NOTICE: mirror: connecting
[2019/02/19 17:28:52:7182] NOTICE: mirror: LWS_CALLBACK_CLIENT_ESTABLISHED
[2019/02/19 17:28:52:7184] NOTICE: opened mirror connection with 62611 lifetime
[2019/02/19 17:29:28:8881] NOTICE: closing mirror session
[2019/02/19 17:29:28:8886] NOTICE: mirror: LWS_CALLBACK_CLOSED mirror_lifetime=0, rxb 0, rx_count 0
[2019/02/19 17:29:28:8890] NOTICE: mirror: connecting
[2019/02/19 17:29:28:8902] NOTICE: mirror: LWS_CALLBACK_CLIENT_ESTABLISHED
[2019/02/19 17:29:28:8910] NOTICE: opened mirror connection with 35002 lifetime
3.4 websocket連接情況
在 libwebsockets-test-server 中可以看到 libwebsockets-test-client 的3次連接信息，如下所示：
cgs@ubuntu:~/libwebsockets/build/bin$ libwebsockets-test-server
[2019/02/19 17:24:56:3115] NOTICE: libwebsockets test server - license LGPL2.1+SLE
[2019/02/19 17:24:56:3115] NOTICE: (C) Copyright 2010-2018 Andy Green <[email protected]>
Using resource path "/usr/local/share/libwebsockets-test-server"
[2019/02/19 17:28:36:0378] NOTICE: Created new mi 0x1214ff0 ''
[2019/02/19 17:28:52:7177] NOTICE: Created new mi 0x1215010 ''
[2019/02/19 17:29:28:8897] NOTICE: Created new mi 0x1214fa0 ''
4. 常見問題
Q：執行安裝命令 make install ，出現安裝失敗，錯誤信息如下：
cgs@ubuntu:~/libwebsockets/build$ make install
[ 47%] Built target websockets
[ 48%] Built target test-server-extpoll
[ 50%] Built target test-server
[ 98%] Built target websockets_shared
[ 99%] Built target test-lejp
[100%] Built target test-client
Install the project...
-- Install configuration: "Release"
-- Up-to-date: /usr/local/lib/pkgconfig/libwebsockets.pc
CMake Error at cmake_install.cmake:36 (file):
file INSTALL cannot set permissions on
"/usr/local/lib/pkgconfig/libwebsockets.pc"
Makefile:94: recipe for target 'install' failed
make: *** [install] Error 1
A：由於安裝需要向 /usr/bin、/usr/local等目錄拷貝文件，需要su權限，所以需要調整安裝命令爲 sudo make install ，即命令前面增加 sudo ，並根據提示輸入su密碼即可安裝成功。
5. 參考資料
ubuntu下編譯安裝libwebsockets
https://blog.csdn.net/weixin_39510813/article/details/82527788