Use a single worker for installs

Author: zanieb

cpython-unix/build-sqlite.sh

@@ -25,4 +25,4 @@ fi
 CC="${HOST_CC}" CXX="${HOST_CXX}" CFLAGS="${EXTRA_TARGET_CFLAGS} -DSQLITE_ENABLE_DBSTAT_VTAB -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS3_TOKENIZER -fPIC" CPPFLAGS="${EXTRA_TARGET_CFLAGS} -fPIC" LDFLAGS="${EXTRA_TARGET_LDFLAGS}" ./configure ${CONFIGURE_FLAGS}
 
 make -j ${NUM_CPUS}
-make -j ${NUM_CPUS} install DESTDIR=${ROOT}/out
+make install DESTDIR=${ROOT}/out