diff --git a/build.sh b/build.sh
index 0487324..8bb3215 100755
--- a/build.sh
+++ b/build.sh
@@ -101,7 +101,7 @@ cmake_build()
         -DCMAKE_USE_OPENSSL=OFF \
         ${CMAKE_PARAMETERS} \
         ..
-    cmake --build .
+    cmake --build . --parallel ${BUILD_JOBS}
     cmake --install .
     cd ${WRKDIR}
 }
@@ -191,7 +191,7 @@ llvm_build()
         -DLLDB_ENABLE_PYTHON=OFF \
         ${CMAKE_PARAMETERS} \
         ..
-    ninja install/strip
+    ninja -j ${BUILD_JOBS} install/strip
     cd ${WRKDIR}
 }
 
@@ -235,7 +235,7 @@ ninja_build()
     mkdir -p ${NINJADIR}/build-${SYSTEM_NAME}
     cd ${NINJADIR}/build-${SYSTEM_NAME}
     CXX=${NINJA_CXX_COMPILER} ../configure.py --platform=${NINJA_PLATFORM}
-    ninja
+    ninja -j ${BUILD_JOBS}
     install ninja${EXTENSION} ${BINDIR}/bin/
     cd ${WRKDIR}
 }
@@ -327,7 +327,7 @@ wine_build()
         --without-x \
         ${CONFIGURE_PARAMETERS}
     for TOOL in widl wmc wrc; do
-        make -j20 tools/${TOOL}/all
+        make -j ${BUILD_JOBS} tools/${TOOL}/all
         cp tools/${TOOL}/${TOOL}${EXTENSION} ${BINDIR}/bin/
     done
     cd ${WRKDIR}