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# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import re
import sys
from spack.package import *
class Opengl(BundlePackage):
"""Placeholder for external OpenGL libraries from hardware vendors"""
homepage = "https://www.opengl.org/"
version("4.5")
maintainers("biddisco")
# This should really be when='platform=linux' but can't because of a
# current bug in when and how ArchSpecs are constructed
if sys.platform.startswith("linux"):
provides("libglx")
executables = ["^glxinfo$"]
else: # windows and mac
provides("gl@4.5")
@classmethod
def determine_version(cls, exe):
if exe:
output = Executable(exe)(output=str, error=str)
match = re.search(r"OpenGL version string: (\S+)", output)
return match.group(1) if match else None
else:
return None
# Override the fetcher method to throw a useful error message;
# fixes GitHub issue (#7061) in which this package threw a
# generic, uninformative error during the `fetch` step,
@property
def fetcher(self):
msg = """This package is intended to be a placeholder for
system-provided OpenGL libraries from hardware vendors. Please
download and install OpenGL drivers/libraries for your graphics
hardware separately, and then set that up as an external package.
An example of a working packages.yaml:
packages:
opengl:
buildable: False
externals:
- spec: opengl@4.5.0
prefix: /opt/opengl
In that case, /opt/opengl/ should contain these two folders:
include/GL/ (opengl headers, including "gl.h")
lib (opengl libraries, including "libGL.so")
On Apple Darwin (e.g., OS X, macOS) systems, this package is
normally installed as part of the XCode Command Line Tools in
/usr/X11R6, so a working packages.yaml would be
packages:
opengl:
buildable: False
externals:
- spec: opengl@4.1
prefix: /usr/X11R6
In that case, /usr/X11R6 should contain
include/GL/ (OpenGL headers, including "gl.h")
lib (OpenGL libraries, including "libGL.dylib")
On OS X/macOS, note that the version of OpenGL provided
depends on your hardware. Look at
https://support.apple.com/en-us/HT202823 to see what version
of OpenGL your Mac uses."""
raise InstallError(msg)
@fetcher.setter # Since fetcher is read-write, must override both
def fetcher(self):
_ = self.fetcher
@property
def headers(self):
return self.gl_headers
@property
def libs(self):
return self.gl_libs
@property
def gl_headers(self):
spec = self.spec
if "platform=darwin" in spec:
header_name = "OpenGL/gl"
else:
header_name = "GL/gl"
return find_headers(header_name, root=self.prefix, recursive=True)
@property
def gl_libs(self):
spec = self.spec
if "platform=windows" in spec:
lib_name = "opengl32"
elif "platform=darwin" in spec:
lib_name = "libOpenGL"
else: # linux and cray
lib_name = "libGL"
return find_libraries(lib_name, root=self.prefix, recursive=True)
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