Remove Qt SVG and Qt OpenGL as hard dependencies
Qt SVG is not used in the frontend (no SVGs are rendered).
Neither is Qt OpenGL used. Qt OpenGL is discouraged anyway.
#.rst:
# TestBigEndian
# -------------
#
# The TestBigEndian.cmake module that ships with CMake, which
# checks if the system is big endian or little endian, assumes
# that a binary is produced that will have bytes that correspond to the
# endianness on the target system. Since emscripten produces Javascript, we
# override the default behavior and always return little endian.
#
# ::
#
# TEST_BIG_ENDIAN(VARIABLE)
# VARIABLE - variable to store the result to
#=============================================================================
# Copyright 2002-2009 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.)
function(TEST_BIG_ENDIAN VARIABLE)
set(${VARIABLE} 0 CACHE INTERNAL "Result of TEST_BIG_ENDIAN" FORCE)
endfunction()