Remove boost (#2552)

Summary:
After reviewing the code for KenLM it turned out that we can build it without boost.

Pull Request resolved: https://github.com/pytorch/audio/pull/2552

Reviewed By: xiaohui-zhang

Differential Revision: D37949699

Pulled By: mthrok

fbshipit-source-id: 4a4ffae4220d0b764b53f52b93040670d91a84a3

setup.py

@@ -106,7 +106,7 @@ def _parse_url(path):
 
 def _parse_sources():
     third_party_dir = ROOT_DIR / "third_party"
-    libs = ["zlib", "bzip2", "lzma", "boost", "sox"]
+    libs = ["zlib", "bzip2", "lzma", "sox"]
     archive_dir = third_party_dir / "archives"
     archive_dir.mkdir(exist_ok=True)
     for lib in libs:

third_party/CMakeLists.txt

@@ -21,6 +21,5 @@ if (BUILD_CTC_DECODER)
   add_subdirectory(zlib)
   add_subdirectory(bzip2)
   add_subdirectory(lzma)
-  add_subdirectory(boost)
   add_subdirectory(kenlm)
 endif()

third_party/boost/CMakeLists.txt

-include(ExternalProject)
-
-set(INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../install/include)
-set(ARCHIVE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../archives)
-
-
-ExternalProject_Add(boost
-  PREFIX ${CMAKE_CURRENT_BINARY_DIR}
-  DOWNLOAD_DIR ${ARCHIVE_DIR}
-  URL https://boostorg.jfrog.io/artifactory/main/release/1.78.0/source/boost_1_78_0.tar.gz
-  URL_HASH SHA256=94ced8b72956591c4775ae2207a9763d3600b30d9d7446562c552f0a14a63be7
-  BUILD_IN_SOURCE 1
-  CONFIGURE_COMMAND ""
-  BUILD_COMMAND ""
-  INSTALL_COMMAND ${CMAKE_COMMAND} -E copy_directory boost ${INCLUDE_DIR}/boost
-  DOWNLOAD_NO_PROGRESS ON
-  LOG_DOWNLOAD ON
-  LOG_UPDATE ON
-  LOG_CONFIGURE ON
-  LOG_BUILD ON
-  LOG_INSTALL ON
-  LOG_MERGED_STDOUTERR ON
-  LOG_OUTPUT_ON_FAILURE ON
-)

third_party/kenlm/CMakeLists.txt

@@ -69,5 +69,3 @@ target_link_libraries(
   bzip2
   lzma
 )
-
-add_dependencies(kenlm boost)