Fix warpctc static libs and torch

Author: gangliao

cmake/external/warpctc.cmake

@@ -24,16 +24,10 @@ SET(WARPCTC_LIB_DIR "${WARPCTC_INSTALL_DIR}/lib" CACHE PATH "Warp-ctc Library Di
 
 IF(WIN32)
     SET(WARPCTC_LIBRARIES
-        "${WARPCTC_INSTALL_DIR}/lib/warpctc.dll" CACHE FILEPATH "Warp-ctc Library" FORCE)
+        "${WARPCTC_INSTALL_DIR}/lib/warpctc.lib" CACHE FILEPATH "Warp-ctc Library" FORCE)
 ELSE(WIN32)
-    IF(APPLE)
-        SET(_warpctc_SHARED_SUFFIX dylib)
-    ELSE(APPLE)
-        SET(_warpctc_SHARED_SUFFIX so)
-    ENDIF(APPLE)
-
     SET(WARPCTC_LIBRARIES
-        "${WARPCTC_INSTALL_DIR}/lib/libwarpctc.${_warpctc_SHARED_SUFFIX}" CACHE FILEPATH "Warp-ctc Library" FORCE)
+        "${WARPCTC_INSTALL_DIR}/lib/libwarpctc.a" CACHE FILEPATH "Warp-ctc Library" FORCE)
 ENDIF(WIN32)
 
 IF(CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" )
@@ -53,6 +47,7 @@ ExternalProject_Add(
     CMAKE_ARGS      -DCMAKE_INSTALL_PREFIX=${WARPCTC_INSTALL_DIR}
     CMAKE_ARGS      -DWITH_GPU=${WITH_GPU}
     CMAKE_ARGS      -DWITH_OMP=${USE_OMP}
+    CMAKE_ARGS      -DWITH_TORCH=OFF
     CMAKE_ARGS      -DBUILD_SHARED=OFF
 )