1 files changed, 66 insertions, 0 deletions
diff --git a/third_party/aom/build/cmake/generate_exports.cmake b/third_party/aom/build/cmake/generate_exports.cmake
new file mode 100644
index 0000000000..7ab5aaef89
--- /dev/null
+++ b/third_party/aom/build/cmake/generate_exports.cmake
@@ -0,0 +1,66 @@
+#
+# Copyright (c) 2017, Alliance for Open Media. All rights reserved
+#
+# This source code is subject to the terms of the BSD 2 Clause License and the
+# Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License was
+# not distributed with this source code in the LICENSE file, you can obtain it
+# at www.aomedia.org/license/software. If the Alliance for Open Media Patent
+# License 1.0 was not distributed with this source code in the PATENTS file, you
+# can obtain it at www.aomedia.org/license/patent.
+#
+cmake_minimum_required(VERSION 3.5)
+
+set(REQUIRED_ARGS "AOM_ROOT" "AOM_CONFIG_DIR" "AOM_TARGET_SYSTEM"
+    "AOM_SYM_FILE" "CONFIG_AV1_DECODER" "CONFIG_AV1_ENCODER")
+
+foreach(arg ${REQUIRED_ARGS})
+  if("${${arg}}" STREQUAL "")
+    message(FATAL_ERROR "${arg} must not be empty.")
+  endif()
+endforeach()
+
+include("${AOM_ROOT}/build/cmake/exports_sources.cmake")
+
+if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin")
+  set(symbol_prefix "_")
+elseif("${AOM_TARGET_SYSTEM}" MATCHES "Windows\|MSYS" AND AOM_MSVC)
+  file(WRITE "${AOM_SYM_FILE}" "LIBRARY aom\n" "EXPORTS\n")
+else()
+  set(symbol_suffix ";")
+endif()
+
+set(aom_sym_file "${AOM_SYM_FILE}")
+
+if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin")
+  file(REMOVE "${aom_sym_file}")
+elseif("${AOM_TARGET_SYSTEM}" MATCHES "Windows\|MSYS" AND AOM_MSVC)
+  file(WRITE "${aom_sym_file}" "LIBRARY aom\n" "EXPORTS\n")
+else()
+  file(WRITE "${aom_sym_file}" "{\nglobal:\n")
+endif()
+
+foreach(export_file ${AOM_EXPORTS_SOURCES})
+  file(STRINGS "${export_file}" exported_file_data)
+  set(exported_symbols "${exported_symbols} ${exported_file_data};")
+  string(STRIP "${exported_symbols}" exported_symbols)
+endforeach()
+
+foreach(exported_symbol ${exported_symbols})
+  string(STRIP "${exported_symbol}" exported_symbol)
+  if("${AOM_TARGET_SYSTEM}" MATCHES "Windows\|MSYS" AND AOM_MSVC)
+    string(SUBSTRING ${exported_symbol} 0 4 export_type)
+    string(COMPARE EQUAL "${export_type}" "data" is_data)
+    if(is_data)
+      set(symbol_suffix " DATA")
+    else()
+      set(symbol_suffix "")
+    endif()
+  endif()
+  string(REGEX REPLACE "text \|data " "" "exported_symbol" "${exported_symbol}")
+  set(exported_symbol "  ${symbol_prefix}${exported_symbol}${symbol_suffix}")
+  file(APPEND "${aom_sym_file}" "${exported_symbol}\n")
+endforeach()
+
+if("${aom_sym_file}" MATCHES "ver$")
+  file(APPEND "${aom_sym_file}" " \nlocal:\n  *;\n};")
+endif()