pecl install pdo_pgsql issue

hi there, i tried to install pdo_pgsql on mac, but keep getting this error. does anyone know how to resolve it? help is really appreciated. (php 5.6)

running: make INSTALL_ROOT="/private/tmp/pear/install/pear-build-rootVTrHN1/install-PDO-1.0.3" install

Installing shared extensions: /private/tmp/pear/install/pear-build-rootVTrHN1/install-PDO-1.0.3/usr/lib/php/extensions/no-debug-non-zts-20160303/

cp: modules/*: No such file or directory

make: *** [install-modules] Error 1

ERROR: `make INSTALL_ROOT="/private/tmp/pear/install/pear-build-rootVTrHN1/install-PDO-1.0.3" install' failed