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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author ruki
-- @file find_cuda.lua
--
-- imports
import("lib.detect.find_file")
import("lib.detect.find_programver")
import("core.base.option")
import("core.base.global")
import("core.project.config")
import("core.cache.detectcache")
-- find cuda sdk directory
function _find_sdkdir(version, sdkdir)
-- init the search directories
local paths = {}
if sdkdir then
version = version or "*"
table.insert(paths, path.join(sdkdir, "bin"))
if is_host("macosx") then
table.insert(paths, path.join(sdkdir, format("CUDA-%s/bin", version)))
elseif is_host("windows") then
table.insert(paths, path.join(sdkdir, format("v%s\\bin", version)))
else
table.insert(paths, path.join(sdkdir, format("cuda-%s/bin", version)))
end
elseif version then
if is_host("macosx") then
table.insert(paths, format("/Developer/NVIDIA/CUDA-%s/bin", version))
elseif is_host("windows") then
table.insert(paths, format("$(env CUDA_PATH_V%s)/bin", version:gsub("%.", "_")))
table.insert(paths, format("C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v%s\\bin", version))
else
table.insert(paths, format("/usr/local/cuda-%s/bin", version))
end
else
if is_host("macosx") then
table.insert(paths, "/Developer/NVIDIA/CUDA/bin")
table.insert(paths, "/Developer/NVIDIA/CUDA*/bin")
elseif is_host("windows") then
table.insert(paths, "$(env CUDA_PATH)/bin")
table.insert(paths, "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\*\\bin")
else
-- find from default symbol link dir
table.insert(paths, "/usr/local/cuda/bin")
table.insert(paths, "/usr/local/cuda*/bin")
end
table.insert(paths, "$(env PATH)")
end
-- attempt to find nvcc
local nvcc = find_file(is_host("windows") and "nvcc.exe" or "nvcc", paths)
if nvcc then
return path.directory(path.directory(nvcc))
end
end
-- find cuda msbuild extensions
function _find_msbuildextensionsdir(sdkdir)
local props = find_file("CUDA *.props", {path.join(sdkdir, "extras", "visual_studio_integration", "MSBuildExtensions")})
if props then
return path.directory(props)
end
end
-- find cuda sdk toolchains
function _find_cuda(sdkdir, sdkver)
-- handle sdkdir as version
if sdkdir and sdkdir:match("^[%d*]+%.[%d*]+$") then
sdkver = sdkdir
sdkdir = nil
end
-- check sdkdir
if sdkdir and not os.isdir(sdkdir) then
raise("invalid cuda location: " .. sdkdir)
end
-- check sdkver
if sdkver and not sdkver:match("^[%d*]+%.[%d*]+$") then
raise("invalid cuda version: " .. sdkver)
end
-- find cuda directory
sdkdir = _find_sdkdir(sdkver, sdkdir)
if not sdkdir and sdkver then
raise("cuda version %s not found!", sdkver)
end
-- not found?
if not sdkdir or not os.isdir(sdkdir) then
return nil
end
-- get the bin directory
local bindir = path.join(sdkdir, "bin")
if not os.isexec(path.join(bindir, "nvcc")) then
return nil
end
-- get linkdirs
local linkdirs = {}
if is_host("windows") then
local subdir = is_arch("x64") and "x64" or "Win32"
table.insert(linkdirs, path.join(sdkdir, "lib", subdir))
elseif is_host("linux") and is_arch("x86_64", "arm64") then
table.insert(linkdirs, path.join(sdkdir, "lib64"))
else
table.insert(linkdirs, path.join(sdkdir, "lib"))
end
-- get includedirs
local includedirs = {path.join(sdkdir, "include")}
-- get version
local sdkver = find_programver(path.join(bindir, "nvcc"), {parse = "release (%d+%.%d+),"})
-- find msbuildextensionsdir on windows
local msbuildextensionsdir
if is_host("windows") then
msbuildextensionsdir = _find_msbuildextensionsdir(sdkdir)
end
-- get toolchains
return {sdkdir = sdkdir, bindir = bindir, sdkver = sdkver, linkdirs = linkdirs, includedirs = includedirs, msbuildextensionsdir = msbuildextensionsdir}
end
-- find cuda sdk toolchains
--
-- @param sdkdir the cuda sdk directory or version
-- @param opt the argument options
--
-- @return the cuda sdk toolchains. e.g. {sdkdir = ..., bindir = .., linkdirs = ..., includedirs = ..., .. }
--
-- @code
--
-- local toolchains = find_cuda("/Developer/NVIDIA/CUDA-9.1")
-- local toolchains = find_cuda("9.1")
-- local toolchains = find_cuda("9.*")
--
-- @endcode
--
function main(sdkdir, opt)
-- init arguments
opt = opt or {}
-- attempt to load cache first
local key = "detect.sdks.find_cuda"
local cacheinfo = detectcache:get(key) or {}
if not opt.force and cacheinfo.cuda and cacheinfo.cuda.sdkdir and os.isdir(cacheinfo.cuda.sdkdir) then
return cacheinfo.cuda
end
-- find cuda
local cuda = _find_cuda(sdkdir or config.get("cuda") or global.get("cuda") or config.get("sdk"), opt.version or config.get("cuda_sdkver"))
if cuda then
-- save to config
config.set("cuda", cuda.sdkdir, {force = true, readonly = true})
config.set("cuda_sdkver", cuda.sdkver, {force = true, readonly = true})
-- trace
if opt.verbose or option.get("verbose") then
cprint("checking for Cuda SDK directory ... ${color.success}%s", cuda.sdkdir)
end
else
-- trace
if opt.verbose or option.get("verbose") then
cprint("checking for Cuda SDK directory ... ${color.nothing}${text.nothing}")
end
end
-- save to cache
cacheinfo.cuda = cuda or false
detectcache:set(key, cacheinfo)
return cuda
end
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