我正在运行这个命令：
sudo pecl install ssh2
它导致以下日志并因错误退出：
libssh2 prefix? [autodetect] :
building in /var/tmp/pear-build-rootHyRX5L/ssh2-0.12
running: /var/tmp/ssh2/configure --with-ssh2
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for a sed that does not truncate output... /bin/sed
checking for cc... cc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether cc accepts -g... yes
checking for cc option to accept ISO C89... none needed
checking how to run the C preprocessor... cc -E
checking for icc... no
checking for suncc... no
checking whether cc understands -c and -o together... yes
checking for system library directory... lib
checking if compiler supports -R... no
checking if compiler supports -Wl,-rpath,... yes
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
checking for PHP prefix... /usr
checking for PHP includes... -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib
checking for PHP extension directory... /usr/lib64/php/modules
checking for PHP installed headers prefix... /usr/include/php
checking if debug is enabled... no
checking if zts is enabled... no
checking for re2c... no
configure: WARNING: You will need re2c 0.13.4 or later if you want to regenerate PHP parsers.
checking for gawk... gawk
checking for ssh2 support... yes, shared
checking for ssh2 files in default path... not found
configure: error: The required libssh2 library was not found. You can obtain that package from http://sourceforge.net/projects/libssh2/
ERROR: `/var/tmp/ssh2/configure --with-ssh2' failed
如您所见，它说找不到 libssh2。但是，当我运行以下命令时：
sudo yum install libssh2
它说已经安装好了：
Setting up Install Process
Package libssh2-1.4.2-1.el6.x86_64 already installed and latest version
Nothing to do
现在，我假设，出于某种原因，pecl 安装程序找不到 libssh2 安装。我该如何让它识别该路径。有没有其他简单的方法可以正确完成？
答案1
如果你只是使用 phpseclib（一个纯 PHP SSH 客户端）来模拟 libssh2，你可能会更幸运：
答案2
我照做了yum install libssh2-devel，然后sudo pecl install ssh2-0.12就开始工作了。