"Linux" "curl" Ubuntu compiler Libcurl__linux

First, download Libcurl http://curl.haxx.se/download/curl-7.21.1.tar.gz II, installation specified installation directory/usr/local/curl Note: It is best to use the default path command 1:./confi Gure--prefix=/usr/local/curl This is the command:./configure this way, use directly when compiling the program gcc-o Filename-wall Filename.c-lcurl There will be no compile-link errors, and if your path changes, it may be cumbersome to compile the program. Results:   curl version:    7.21.1   host setup:      I686-PC-LINUX-GNU  & Nbsp;install prefix:  /usr/local/curl   compiler:        GCC   SSL support :     enabled (OpenSSL)   ssh support:     no       (--WITH-LIBSSH2)  &NB Sp;zlib support:    enabled   KRB4 support:    no       (--with-krb4*)    GSSAPI support:  no       (--WITH-GSSAPI)   spnego support:  no     &NB SP; (--with-spnego)   resolver:        default (--enable-ares/- Enable-threaded-resolver)   ipv6 support:    enabled   IDN support:     Enabled   build Libcurl:   Shared=yes, Static=yes   built-in manual:enabled,   Verbose Errors:  enabled (--disAble-verbose)   sspi support:    no       (--ENABLE-SSPI)   CA cert Bundle: & NBSP;/ETC/SSL/CERTS/CA-CERTIFICATES.CRT   CA cert path:    no   LDAP Support:    enabled (OpenLDAP)   ldaps support:   enabled   RTSP support:    enabled    rtmp support:    no       (--with-librtmp)   protocols:       DICT FILE FTP FTPS HTTP HTTPS IMAP imaps LDAP LDAPS POP3 pop3s RTSP SMTP smtps TELNET TFTP Command 2:make command 3:sudo make install can see Lib library, already installed in  /usr/local/curl/lib---------------------------------------------------------------------- Libraries have been installed in:   /usr/local/curl/lib If your ever happen to want to link against installed Li Braries in a given directory, Libdir, your must either use Libtool, and specify the full pathname of the library, or use th E '-llibdir ' flag during linking and do at least ONE of the following:   -add Libdir to the ' ld_library_path ' environment variable      during ex Ecution   -Add Libdir to the ' ld_run_path ' environment variable      during linking  &nbsp ; -Use the '-WL,-RPATH-WL,LIBDIR ' linker flag   -Have your system administrator add Libdir to '/etc/ld.so.conf ' Operating system documentation about shared libraries for more information, such as the LD (1) and ld.so (8) Manua L pages. Under the installation directory/usr/local/curl will have four directories  bin  include  lib  share contains the required libraries, headers, etc.