Android: Detect and save a standalone toolchain without the NDK

2 files changed, 71 insertions, 0 deletions

diff --git a/Modules/Platform/Android/Determine-Compiler-Standalone.cmake b/Modules/Platform/Android/Determine-Compiler-Standalone.cmake
new file mode 100644
index 0000000..64d4ccf
--- /dev/null
+++ b/Modules/Platform/Android/Determine-Compiler-Standalone.cmake
@@ -0,0 +1,69 @@
+#=============================================================================
+# Copyright 2015-2016 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+set(_ANDROID_TOOL_C_COMPILER "")
+set(_ANDROID_TOOL_CXX_COMPILER "")
+set(_ANDROID_TOOL_PREFIX "")
+file(GLOB _gcc "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/bin/*-gcc${_ANDROID_HOST_EXT}")
+foreach(gcc IN LISTS _gcc)
+  if("${gcc}" MATCHES "/bin/([^/]*)gcc${_ANDROID_HOST_EXT}$")
+    set(_ANDROID_TOOL_PREFIX "${CMAKE_MATCH_1}")
+    break()
+  endif()
+endforeach()
+
+if(NOT _ANDROID_TOOL_PREFIX)
+  message(FATAL_ERROR
+    "Android: No '*-gcc' compiler found in CMAKE_ANDROID_STANDALONE_TOOLCHAIN:\n"
+    "  ${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}"
+    )
+endif()
+
+# Help CMakeFindBinUtils locate things.
+set(_CMAKE_TOOLCHAIN_PREFIX "${_ANDROID_TOOL_PREFIX}")
+
+execute_process(
+  COMMAND "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/bin/${_ANDROID_TOOL_PREFIX}gcc${_ANDROID_HOST_EXT}" -dumpversion
+  OUTPUT_VARIABLE _gcc_version
+  ERROR_VARIABLE _gcc_error
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+if(_gcc_version MATCHES "^([0-9]+\\.[0-9]+)")
+  set(_ANDROID_TOOL_C_TOOLCHAIN_VERSION "${CMAKE_MATCH_1}")
+else()
+  message(FATAL_ERROR
+    "Android: Failed to extract the standalone toolchain version.  The command:\n"
+    "  '${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/bin/${_ANDROID_TOOL_PREFIX}gcc${_ANDROID_HOST_EXT}' '-dumpversion'\n"
+    "produced output:\n"
+    "  ${_gcc_version}\n"
+    )
+endif()
+
+set(_ANDROID_TOOL_C_TOOLCHAIN_PREFIX "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/bin/${_ANDROID_TOOL_PREFIX}")
+set(_ANDROID_TOOL_C_TOOLCHAIN_SUFFIX "${_ANDROID_HOST_EXT}")
+
+set(_ANDROID_TOOL_CXX_TOOLCHAIN_VERSION "${_ANDROID_TOOL_C_TOOLCHAIN_VERSION}")
+set(_ANDROID_TOOL_CXX_TOOLCHAIN_PREFIX "${_ANDROID_TOOL_C_TOOLCHAIN_PREFIX}")
+set(_ANDROID_TOOL_CXX_TOOLCHAIN_SUFFIX "${_ANDROID_TOOL_C_TOOLCHAIN_SUFFIX}")
+
+if(EXISTS "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/bin/clang${_ANDROID_HOST_EXT}")
+  set(_ANDROID_TOOL_C_COMPILER "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/bin/clang${_ANDROID_HOST_EXT}")
+  set(_ANDROID_TOOL_C_COMPILER_EXTERNAL_TOOLCHAIN "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}")
+  set(_ANDROID_TOOL_CXX_COMPILER "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/bin/clang++${_ANDROID_HOST_EXT}")
+  set(_ANDROID_TOOL_CXX_COMPILER_EXTERNAL_TOOLCHAIN "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}")
+else()
+  set(_ANDROID_TOOL_C_COMPILER "${_ANDROID_TOOL_C_TOOLCHAIN_PREFIX}gcc${_ANDROID_TOOL_C_TOOLCHAIN_SUFFIX}")
+  set(_ANDROID_TOOL_C_COMPILER_EXTERNAL_TOOLCHAIN "")
+  set(_ANDROID_TOOL_CXX_COMPILER "${_ANDROID_TOOL_CXX_TOOLCHAIN_PREFIX}g++${_ANDROID_TOOL_CXX_TOOLCHAIN_SUFFIX}")
+  set(_ANDROID_TOOL_CXX_COMPILER_EXTERNAL_TOOLCHAIN "")
+endif()
diff --git a/Modules/Platform/Android/Determine-Compiler.cmake b/Modules/Platform/Android/Determine-Compiler.cmake
index 9649b35..613ce32 100644
--- a/Modules/Platform/Android/Determine-Compiler.cmake
+++ b/Modules/Platform/Android/Determine-Compiler.cmake
@@ -39,6 +39,8 @@ endif()
 
 if(CMAKE_ANDROID_NDK)
   include(Platform/Android/Determine-Compiler-NDK)
+elseif(CMAKE_ANDROID_STANDALONE_TOOLCHAIN)
+  include(Platform/Android/Determine-Compiler-Standalone)
 else()
   set(_ANDROID_TOOL_C_COMPILER "")
   set(_ANDROID_TOOL_C_TOOLCHAIN_VERSION "")