diff --git a/build/pkgs/primecount/spkg-install b/build/pkgs/primecount/spkg-install
index e8e40fbe44b..de130086b40 100644
--- a/build/pkgs/primecount/spkg-install
+++ b/build/pkgs/primecount/spkg-install
@@ -18,6 +18,7 @@ fi
 
 echo "Configuring primecount."
 cmake . -DCMAKE_INSTALL_PREFIX=${SAGE_LOCAL} \
+        -DCMAKE_VERBOSE_MAKEFILE=ON \
         -DBUILD_STATIC_LIBS=OFF \
         -DBUILD_SHARED_LIBS=ON \
         -DBUILD_TESTS=ON \