我正在尝试从源代码安装libvirt。我尝试安装的版本是1.2.7。我想启用libssh2。以下是我调用configure脚本的方法：
./configure --prefix=/home/administrator/dev/workspaces/libvirt/built/libvirt-1.2.7/ --with-sasl --with-qemu --with-lxc --with-gnutls --with-remote --with-ssh2 --with-polkit
我收到以下错误：
configure：错误：您必须安装libssh2＆gt; = 1.3 pkg-config模块才能编译libvirt
我下载了libssh2 lib 1.4.3版并使用默认选项安装它：
$ ./configure
$ make
$ sudo make install
以下是一些有用的信息：
$ sudo ldconfig
$ sudo updatedb
$ locate libssh2.so
/usr/local/lib/libssh2.so
/usr/local/lib/libssh2.so.1
/usr/local/lib/libssh2.so.1.0.1
$ locate libssh2.pc
/usr/local/lib/pkgconfig/libssh2.pc
$ pkg-config --variable pc_path pkg-config
/usr/local/lib/x86_64-linux-gnu/pkgconfig:/usr/local/lib/pkgconfig:/usr/local/share/pkgconfig:/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/lib/pkgconfig:/usr/share/pkgconfig
显然libssh2.pc文件位于pkg-config路径上。但是，当我尝试执行libvirt的配置脚本时，发生了同样的错误。我有什么想法我做错了吗？谢谢。
编辑：config.log文件的片段：
34475 configure:59141: checking for SSH2
34476 configure:59148: $PKG_CONFIG --exists --print-errors "libssh2 >= 1.3"
34477 configure:59151: $? = 0
34478 configure:59165: $PKG_CONFIG --exists --print-errors "libssh2 >= 1.3"
34479 configure:59168: $? = 0
34480 configure:59182: result: no
34481 Package libssl was not found in the pkg-config search path.
34482 Perhaps you should add the directory containing `libssl.pc'
34483 to the PKG_CONFIG_PATH environment variable
34484 Package 'libssl', required by 'libssh2', not found
34485 configure:59225: error: You must install the libssh2 >= 1.3 pkg-config module to compile libvirt
...
34576 ac_cv_env_PKG_CONFIG_LIBDIR_set=
34577 ac_cv_env_PKG_CONFIG_LIBDIR_value=
34578 ac_cv_env_PKG_CONFIG_PATH_set=
34579 ac_cv_env_PKG_CONFIG_PATH_value=
34580 ac_cv_env_PKG_CONFIG_set=
34581 ac_cv_env_PKG_CONFIG_value=
...
34874 ac_cv_path_ac_pt_PKG_CONFIG=/usr/bin/pkg-config
36432 PKG_CONFIG='/usr/bin/pkg-config'
36433 PKG_CONFIG_LIBDIR=''
36434 PKG_CONFIG_PATH=''