build fails for filter example - no such package

I have tried the build according to the steps mentioned in the README. The build fails with the error below

/envoy-filter-example$ bazel build //:envoy
Starting local Bazel server and connecting to it...
ERROR: /home/jyoti/.cache/bazel/_bazel_jyoti/d7dbc3ad28d2496ca23a589bf2a3c01f/external/envoy/bazel/foreign_cc/BUILD:8:1: no such package '@com_github_gperftools_gperftools//': Traceback (most recent call last):
File "/home/jyoti/.cache/bazel/_bazel_jyoti/d7dbc3ad28d2496ca23a589bf2a3c01f/external/bazel_tools/tools/build_defs/repo/http.bzl", line 55
patch(ctx)
File "/home/jyoti/.cache/bazel/_bazel_jyoti/d7dbc3ad28d2496ca23a589bf2a3c01f/external/bazel_tools/tools/build_defs/repo/utils.bzl", line 89, in patch
fail(("Error applying patch command %...)))
Error applying patch command ./autogen.sh:
./autogen.sh: 3: ./autogen.sh: autoreconf: not found
and referenced by '@envoy//bazel/foreign_cc:gperftools_build'
ERROR: Analysis of target '//:envoy' failed; build aborted: no such package '@com_github_gperftools_gperftools//': Traceback (most recent call last):
File "/home/jyoti/.cache/bazel/_bazel_jyoti/d7dbc3ad28d2496ca23a589bf2a3c01f/external/bazel_tools/tools/build_defs/repo/http.bzl", line 55
patch(ctx)
File "/home/jyoti/.cache/bazel/_bazel_jyoti/d7dbc3ad28d2496ca23a589bf2a3c01f/external/bazel_tools/tools/build_defs/repo/utils.bzl", line 89, in patch
fail(("Error applying patch command %...)))
Error applying patch command ./autogen.sh:
./autogen.sh: 3: ./autogen.sh: autoreconf: not found
INFO: Elapsed time: 25.181s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (17 packages loaded, 149 targets configured)

Please help me resolve this error