我无法安装端口 py37-pymysql (MacOS Mojave 10.14.6)：
$ sudo port install py37-pymysql
---> Computing dependencies for py37-pymysql
---> Cleaning py37-pymysql
---> Scanning binaries for linking errors
---> Found 4 broken files, matching files to ports
---> Found 4 broken ports, determining rebuild order
You can always run 'port rev-upgrade' again to fix errors.
The following ports will be rebuilt:
py27-cairo @1.18.1+quartz+x11
py35-cairo @1.18.1
harfbuzz @2.5.3
rb-rcairo @1.14.3
Continue? [Y/n]: y
---> Computing dependencies for cairo
---> Configuring cairo
Error: Failed to configure cairo, consult /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_cairo/cairo/work/cairo-1.16.0/config.log
Error: Failed to configure cairo: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_cairo/cairo/main.log for details.
Error: Problem while installing cairo
Error: rev-upgrade failed: Error rebuilding py27-cairo
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
当我尝试运行“port rev-upgrade”时，遇到了同样的错误：
$ sudo port rev-upgrade
---> Scanning binaries for linking errors
---> Found 4 broken files, matching files to ports
---> Found 4 broken ports, determining rebuild order
You can always run 'port rev-upgrade' again to fix errors.
The following ports will be rebuilt:
py27-cairo @1.18.1+quartz+x11
py35-cairo @1.18.1
harfbuzz @2.5.3
rb-rcairo @1.14.3
Continue? [Y/n]: y
---> Computing dependencies for cairo
---> Configuring cairo
Error: Failed to configure cairo, consult /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_cairo/cairo/work/cairo-1.16.0/config.log
Error: Failed to configure cairo: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_cairo/cairo/main.log for details.
Error: Problem while installing cairo
Error: rev-upgrade failed: Error rebuilding py27-cairo
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
当我尝试单独安装 port cairo 时，也会发生类似的事情：
$ sudo port install cairo
---> Computing dependencies for cairo
---> Configuring cairo
Error: Failed to configure cairo, consult /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_cairo/cairo/work/cairo-1.16.0/config.log
Error: Failed to configure cairo: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_cairo/cairo/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port cairo failed
当我尝试安装其他端口时，我总是遇到此错误（无法配置 cairo）。如果有人能建议修复此问题，我将不胜感激。提前致谢！