From e2877a8598e2e710462fc55b8817abe684a9ad15 Mon Sep 17 00:00:00 2001
From: Axel Isouard <axel@isouard.fr>
Date: Sun, 5 Feb 2017 06:33:48 -0800
Subject: [PATCH] Generate Prefix file at LibWebRTCCommand module inclusion

---
 CMakeModules/LibWebRTCCommand.cmake |  1 +
 CMakeModules/Prefix.cmake           | 49 +++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 CMakeModules/Prefix.cmake

diff --git a/CMakeModules/LibWebRTCCommand.cmake b/CMakeModules/LibWebRTCCommand.cmake
index 2d8077b..48c73e4 100644
--- a/CMakeModules/LibWebRTCCommand.cmake
+++ b/CMakeModules/LibWebRTCCommand.cmake
@@ -1,4 +1,5 @@
 include(CMakeParseArguments)
+include(Prefix)
 
 function(libwebrtc_command)
   set(ONE_VALUE_ARGS NAME COMMENT DEPENDS WORKING_DIRECTORY)
diff --git a/CMakeModules/Prefix.cmake b/CMakeModules/Prefix.cmake
new file mode 100644
index 0000000..d721c70
--- /dev/null
+++ b/CMakeModules/Prefix.cmake
@@ -0,0 +1,49 @@
+#
+# Generate environment variables
+#
+set(WEBRTC_PATH ${CMAKE_SOURCE_DIR}/depot_tools)
+
+if (WIN32)
+  get_filename_component(DEPOT_TOOLS_PYTHON_PATH
+                         "${WEBRTC_PATH}/python276_bin"
+                         REALPATH)
+  list(APPEND WEBRTC_PATH ${DEPOT_TOOLS_PYTHON_PATH})
+endif (WIN32)
+
+list(APPEND WEBRTC_PATH $ENV{PATH})
+
+if (WIN32)
+  string(REGEX REPLACE "/" "\\\\" WEBRTC_PATH "${WEBRTC_PATH}")
+  string(REGEX REPLACE ";" "\\\;" WEBRTC_PATH "${WEBRTC_PATH}")
+else (WIN32)
+  string(REGEX REPLACE ";" ":" WEBRTC_PATH "${WEBRTC_PATH}")
+endif (WIN32)
+
+get_filename_component(CHROMIUM_PYTHONPATH
+                       "${CMAKE_BINARY_DIR}/src/build"
+                       REALPATH)
+
+if (WIN32)
+  set(PREFIX_FILENAME ${CMAKE_BINARY_DIR}/prefix.bat)
+  set(PREFIX_COMMAND set)
+  set(PREFIX_HEADER "@ECHO OFF")
+  set(PREFIX_EVAL "%*")
+  set(PREFIX_EXECUTE cmd /c ${PREFIX_FILENAME})
+  set(PREFIX_NEWLINE \r\n)
+else (WIN32)
+  set(PREFIX_FILENAME ${CMAKE_BINARY_DIR}/prefix.sh)
+  set(PREFIX_COMMAND export)
+  set(PREFIX_HEADER "")
+  set(PREFIX_EVAL eval\ $@)
+  set(PREFIX_EXECUTE /bin/sh ${PREFIX_FILENAME})
+  set(PREFIX_NEWLINE \n)
+endif (WIN32)
+
+file(WRITE ${PREFIX_FILENAME} "${PREFIX_HEADER}
+${PREFIX_COMMAND} PATH=${WEBRTC_PATH}
+${PREFIX_COMMAND} PYTHONPATH=${CHROMIUM_PYTHONPATH}
+${PREFIX_COMMAND} DEPOT_TOOLS_WIN_TOOLCHAIN=0
+${PREFIX_COMMAND} DEPOT_TOOLS_UPDATE=0
+${PREFIX_COMMAND} CHROME_HEADLESS=1
+${PREFIX_EVAL}
+")