Comment 5 for bug 1599695

Could you maybe instrument src/Ubuntu/CMakeLists.txt to try and understand what’s not working, and let me know the output?
Something like that:

=== modified file 'src/Ubuntu/CMakeLists.txt'
--- src/Ubuntu/CMakeLists.txt 2016-07-01 13:06:40 +0000
+++ src/Ubuntu/CMakeLists.txt 2016-07-08 05:20:56 +0000
@@ -23,8 +23,11 @@
     OUTPUT_VARIABLE UBUNTU_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
 add_definitions(-DUBUNTU_VERSION="${UBUNTU_VERSION}")

+message("xvfb command: ${XVFB_COMMAND}")
+message("current source dir: ${CMAKE_CURRENT_SOURCE_DIR}")
 execute_process(COMMAND ${XVFB_COMMAND} qmlscene --quit ${CMAKE_CURRENT_SOURCE_DIR}/chromium-version.qml
     OUTPUT_VARIABLE CHROMIUM_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
+message("chromium version extracted by chromium-version.qml: ${CHROMIUM_VERSION}")
 string(REGEX MATCH "\\[(.*)\\]" _ ${CHROMIUM_VERSION})
 set(CHROMIUM_VERSION ${CMAKE_MATCH_1})
 if(NOT CHROMIUM_VERSION MATCHES "^[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+$")