From bf03edb51b2c5e46501ed43d97d63f32264edefe Mon Sep 17 00:00:00 2001
From: Omar Padron <omar.padron@kitware.com>
Date: Mon, 25 Mar 2019 20:43:18 -0400
Subject: [PATCH] LLVM package: disable CUDA (#10858)
This avoids using a system-installed CUDA package. In the future a
variant can be added to allow using Spack-installed CUDA, but for
now CUDA support is always disabled.
---
.../repos/builtin/packages/llvm/package.py | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/var/spack/repos/builtin/packages/llvm/package.py b/var/spack/repos/builtin/packages/llvm/package.py
index 4f7e1583a0..a2e6ae1a94 100644
--- a/var/spack/repos/builtin/packages/llvm/package.py
+++ b/var/spack/repos/builtin/packages/llvm/package.py
@@ -30,6 +30,17 @@ class Llvm(CMakePackage):
variant('clang', default=True,
description="Build the LLVM C/C++/Objective-C compiler frontend")
+
+ # TODO: The current version of this package unconditionally disables CUDA.
+ # Better would be to add a "cuda" variant that:
+ # - Adds dependency on the "cuda" package when enabled
+ # - Sets the necessary CMake flags when enabled
+ # - Disables CUDA (as this current version does) only when the
+ # variant is also disabled.
+
+ # variant('cuda', default=False,
+ # description="Build the LLVM with CUDA features enabled")
+
variant('lldb', default=True, description="Build the LLVM debugger")
variant('lld', default=True, description="Build the LLVM linker")
variant('internal_unwind', default=True,
@@ -588,6 +599,14 @@ def cmake_args(self):
'-DPYTHON_EXECUTABLE:PATH={0}'.format(spec['python'].command.path),
]
+ # TODO: Instead of unconditionally disabling CUDA, add a "cuda" variant
+ # (see TODO above), and set the paths if enabled.
+ cmake_args.extend([
+ '-DCUDA_TOOLKIT_ROOT_DIR:PATH=IGNORE',
+ '-DCUDA_SDK_ROOT_DIR:PATH=IGNORE',
+ '-DCUDA_NVCC_EXECUTABLE:FILEPATH=IGNORE',
+ '-DLIBOMPTARGET_DEP_CUDA_DRIVER_LIBRARIES:STRING=IGNORE'])
+
if '+gold' in spec:
cmake_args.append('-DLLVM_BINUTILS_INCDIR=' +
spec['binutils'].prefix.include)
--
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