Avoid re-downloading files when used as a subproject. (#60)

Author: csukuangfj

CMakeLists.txt

@@ -13,7 +13,15 @@ cmake_minimum_required(VERSION 3.13 FATAL_ERROR)
 
 project(kaldifst CXX)
 
-set(KALDIFST_VERSION "1.7.9")
+set(KALDIFST_VERSION "1.7.10")
+
+# Disable warning about
+#
+# "The DOWNLOAD_EXTRACT_TIMESTAMP option was not given and policy CMP0135 is
+#  not set.
+if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")
+  cmake_policy(SET CMP0135 NEW)
+endif()
 
 if(NOT CMAKE_BUILD_TYPE)
   message(STATUS "No CMAKE_BUILD_TYPE given, default to Release")

cmake/googletest.cmake

@@ -9,8 +9,8 @@ function(download_googltest)
   # please pre-download googletest
   set(possible_file_locations
     $ENV{HOME}/Downloads/googletest-1.13.0.tar.gz
-    ${PROJECT_SOURCE_DIR}/googletest-1.13.0.tar.gz
-    ${PROJECT_BINARY_DIR}/googletest-1.13.0.tar.gz
+    ${CMAKE_SOURCE_DIR}/googletest-1.13.0.tar.gz
+    ${CMAKE_BINARY_DIR}/googletest-1.13.0.tar.gz
     /tmp/googletest-1.13.0.tar.gz
     /star-fj/fangjun/download/github/googletest-1.13.0.tar.gz
   )

cmake/openfst.cmake

@@ -11,8 +11,8 @@ function(download_openfst)
   # please pre-download it
   set(possible_file_locations
     $ENV{HOME}/Downloads/openfst-win-1.6.5.1.tar.gz
-    ${PROJECT_SOURCE_DIR}/openfst-win-1.6.5.1.tar.gz
-    ${PROJECT_BINARY_DIR}/openfst-win-1.6.5.1.tar.gz
+    ${CMAKE_SOURCE_DIR}/openfst-win-1.6.5.1.tar.gz
+    ${CMAKE_BINARY_DIR}/openfst-win-1.6.5.1.tar.gz
     /tmp/openfst-win-1.6.5.1.tar.gz
     /star-fj/fangjun/download/github/openfst-win-1.6.5.1.tar.gz
   )

cmake/pybind11.cmake

@@ -9,8 +9,8 @@ function(download_pybind11)
   # please pre-download pybind11
   set(possible_file_locations
     $ENV{HOME}/Downloads/pybind11-2.10.2.tar.gz
-    ${PROJECT_SOURCE_DIR}/pybind11-2.10.2.tar.gz
-    ${PROJECT_BINARY_DIR}/pybind11-2.10.2.tar.gz
+    ${CMAKE_SOURCE_DIR}/pybind11-2.10.2.tar.gz
+    ${CMAKE_BINARY_DIR}/pybind11-2.10.2.tar.gz
     /tmp/pybind11-2.10.2.tar.gz
     /star-fj/fangjun/download/github/pybind11-2.10.2.tar.gz
   )

kaldifst/csrc/kaldi-math.cc

@@ -64,6 +64,8 @@ int32_t RandInt(int32_t min_val, int32_t max_val,
     } else {
       KALDIFST_ERR << "rand_int failed because we do not support such large "
                       "random numbers. (Extend this function).";
+
+      return min_val;  // unreachable code
     }
   }
 #else