test Solaris CI

Author: psumbera

.github/actions/solaris/action.yml

@@ -25,6 +25,7 @@ runs:
 
           ./buildconf -f
           CC=gcc CXX=g++ \
+          PKG_CONFIG_PATH=/usr/lib/amd64/pkgconfig \
           ./configure \
             --prefix=/usr/local \
             --enable-debug \