Add 2nd optional parameter to HedgewarsScriptLoad. If false, its OK if file does not exist. Also, return true/false on success
#.rst:# FindOpenGL# ----------## FindModule for OpenGL and GLU.## Result Variables# ^^^^^^^^^^^^^^^^## This module sets the following variables:## ``OPENGL_FOUND``# True, if the system has OpenGL.# ``OPENGL_XMESA_FOUND``# True, if the system has XMESA.# ``OPENGL_GLU_FOUND``# True, if the system has GLU.# ``OPENGL_INCLUDE_DIR``# Path to the OpenGL include directory.# ``OPENGL_LIBRARIES``# Paths to the OpenGL and GLU libraries.## If you want to use just GL you can use these values:## ``OPENGL_gl_LIBRARY``# Path to the OpenGL library.# ``OPENGL_glu_LIBRARY``# Path to the GLU library.## OSX Specific# ^^^^^^^^^^^^## On OSX default to using the framework version of OpenGL. People will# have to change the cache values of OPENGL_glu_LIBRARY and# OPENGL_gl_LIBRARY to use OpenGL with X11 on OSX.#=============================================================================# Copyright 2001-2009 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.)set(_OpenGL_REQUIRED_VARS OPENGL_gl_LIBRARY)if (CYGWIN) find_path(OPENGL_INCLUDE_DIR GL/gl.h ) list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR) find_library(OPENGL_gl_LIBRARY opengl32 ) find_library(OPENGL_glu_LIBRARY glu32 )elseif (WIN32) if(BORLAND) set (OPENGL_gl_LIBRARY import32 CACHE STRING "OpenGL library for win32") set (OPENGL_glu_LIBRARY import32 CACHE STRING "GLU library for win32") else() set (OPENGL_gl_LIBRARY opengl32 CACHE STRING "OpenGL library for win32") set (OPENGL_glu_LIBRARY glu32 CACHE STRING "GLU library for win32") endif()elseif (APPLE) # The OpenGL.framework provides both gl and glu find_library(OPENGL_gl_LIBRARY OpenGL DOC "OpenGL library for OS X") find_library(OPENGL_glu_LIBRARY OpenGL DOC "GLU library for OS X (usually same as OpenGL library)") find_path(OPENGL_INCLUDE_DIR OpenGL/gl.h DOC "Include for OpenGL on OS X") list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR)else() if (CMAKE_SYSTEM_NAME MATCHES "HP-UX") # Handle HP-UX cases where we only want to find OpenGL in either hpux64 # or hpux32 depending on if we're doing a 64 bit build. if(CMAKE_SIZEOF_VOID_P EQUAL 4) set(_OPENGL_LIB_PATH /opt/graphics/OpenGL/lib/hpux32/) else() set(_OPENGL_LIB_PATH /opt/graphics/OpenGL/lib/hpux64/ /opt/graphics/OpenGL/lib/pa20_64) endif() elseif(CMAKE_SYSTEM_NAME STREQUAL Haiku) set(_OPENGL_LIB_PATH /boot/develop/lib/x86) set(_OPENGL_INCLUDE_PATH /boot/develop/headers/os/opengl) endif() # The first line below is to make sure that the proper headers # are used on a Linux machine with the NVidia drivers installed. # They replace Mesa with NVidia's own library but normally do not # install headers and that causes the linking to # fail since the compiler finds the Mesa headers but NVidia's library. # Make sure the NVIDIA directory comes BEFORE the others. # - Atanas Georgiev <atanas@cs.columbia.edu> find_path(OPENGL_INCLUDE_DIR GL/gl.h /usr/share/doc/NVIDIA_GLX-1.0/include /usr/openwin/share/include /opt/graphics/OpenGL/include /usr/X11R6/include ${_OPENGL_INCLUDE_PATH} ) list(APPEND _OpenGL_REQUIRED_VARS OPENGL_INCLUDE_DIR) find_path(OPENGL_xmesa_INCLUDE_DIR GL/xmesa.h /usr/share/doc/NVIDIA_GLX-1.0/include /usr/openwin/share/include /opt/graphics/OpenGL/include /usr/X11R6/include ) find_library(OPENGL_gl_LIBRARY NAMES GL MesaGL PATHS /opt/graphics/OpenGL/lib /usr/openwin/lib /usr/shlib /usr/X11R6/lib ${_OPENGL_LIB_PATH} ) unset(_OPENGL_INCLUDE_PATH) unset(_OPENGL_LIB_PATH) find_library(OPENGL_glu_LIBRARY NAMES GLU MesaGLU PATHS ${OPENGL_gl_LIBRARY} /opt/graphics/OpenGL/lib /usr/openwin/lib /usr/shlib /usr/X11R6/lib )endif ()if(OPENGL_gl_LIBRARY) if(OPENGL_xmesa_INCLUDE_DIR) set( OPENGL_XMESA_FOUND "YES" ) else() set( OPENGL_XMESA_FOUND "NO" ) endif() set( OPENGL_LIBRARIES ${OPENGL_gl_LIBRARY} ${OPENGL_LIBRARIES}) if(OPENGL_glu_LIBRARY) set( OPENGL_GLU_FOUND "YES" ) if(NOT "${OPENGL_glu_LIBRARY}" STREQUAL "${OPENGL_gl_LIBRARY}") set( OPENGL_LIBRARIES ${OPENGL_glu_LIBRARY} ${OPENGL_LIBRARIES} ) endif() else() set( OPENGL_GLU_FOUND "NO" ) endif() # This deprecated setting is for backward compatibility with CMake1.4 set (OPENGL_LIBRARY ${OPENGL_LIBRARIES})endif()# This deprecated setting is for backward compatibility with CMake1.4set(OPENGL_INCLUDE_PATH ${OPENGL_INCLUDE_DIR})if(BUILD_ENGINE_JS) # The implementation is based on the standard FindOpenGL.cmake provided # with CMake, but customized for targeting Emscripten only. # These libraries are provided with Emscripten SET(OPENGL_FOUND TRUE) SET(OPENGL_GLU_FOUND TRUE) # Doesn't look like this one is part of Emscripten SET(OPENGL_XMESA_FOUND FALSE) # This is the path where <GL/gl.h> is found SET(OPENGL_INCLUDE_DIR "${EMSCRIPTEN_ROOT_PATH}/system/include") # No library to link against for OpenGL, since Emscripten picks it up # automatically from library_gl.js, but need to report something, or # CMake thinks we failed in the search. SET(OPENGL_LIBRARIES "opengl_emscripten_internal") SET(OPENGL_gl_LIBRARY "gl_emscripten_internal") SET(OPENGL_glu_LIBRARY "glu_emscripten_internal") mark_as_advanced( OPENGL_INCLUDE_DIR OPENGL_glu_LIBRARY OPENGL_gl_LIBRARY )endif()# handle the QUIETLY and REQUIRED arguments and set OPENGL_FOUND to TRUE if# all listed variables are TRUEINCLUDE(FindPackageHandleStandardArgs)FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenGL REQUIRED_VARS ${_OpenGL_REQUIRED_VARS})unset(_OpenGL_REQUIRED_VARS)mark_as_advanced( OPENGL_INCLUDE_DIR OPENGL_xmesa_INCLUDE_DIR OPENGL_glu_LIBRARY OPENGL_gl_LIBRARY)