try again [skip appveyor]
@@ -3,6 +3,6 @@ set -ex
mkdir -p build
cd build
-cmake -DCMAKE_INSTALL_PREFIX="${PREFIX}" -DCMAKE_BUILD_TYPE=Release ..
+cmake -DCMAKE_BUILD_PREFIX="${PREFIX}" -DCMAKE_INSTALL_PREFIX="${PREFIX}" -DCMAKE_BUILD_TYPE=Release ..
make -j "${CPU_COUNT}"
make install
