improve rules

1 files changed, 104 insertions, 0 deletions

diff --git a/xmake/rules/c++/modules/build_modulefiles.lua b/xmake/rules/c++/modules/build_modulefiles.lua
new file mode 100644
index 000000000..427057814
--- /dev/null
+++ b/xmake/rules/c++/modules/build_modulefiles.lua
@@ -0,0 +1,104 @@
+--!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 - 2019, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        build_modulefiles.lua
+--
+
+-- imports
+import("core.tool.compiler")
+
+-- build module files using clang
+function _build_modulefiles_clang(target, sourcebatch, opt)
+
+    -- attempt to compile the module files as cxx
+    sourcebatch.sourcekind = "cxx"
+    sourcebatch.objectfiles = sourcebatch.objectfiles or {}
+    sourcebatch.dependfiles = sourcebatch.dependfiles or {}
+    for _, sourcefile in ipairs(sourcebatch.sourcefiles) do
+        local objectfile = target:objectfile(sourcefile) .. ".pcm"
+        table.insert(sourcebatch.objectfiles, objectfile)
+        table.insert(sourcebatch.dependfiles, target:dependfile(objectfile))
+    end
+
+    -- compile module files to *.pcm
+    opt = table.join(opt, {configs = {cxxflags = {"-fmodules-ts", "--precompile", "-x c++-module"}}})
+    import("private.action.build.object")(target, sourcebatch, opt)
+
+    -- compile *.pcm to object files
+    local modulefiles = {}
+    for idx, sourcefile in ipairs(sourcebatch.sourcefiles) do
+        local modulefile = sourcebatch.objectfiles[idx]
+        local objectfile = target:objectfile(sourcefile) 
+        sourcebatch.sourcefiles[idx] = modulefile
+        sourcebatch.objectfiles[idx] = objectfile
+        sourcebatch.dependfiles[idx] = target:dependfile(objectfile)
+        table.insert(modulefiles, modulefile)
+    end
+    opt.configs = {cxxflags = {"-fmodules-ts"}}
+    opt.quiet   = true
+    import("private.action.build.object")(target, sourcebatch, opt)
+
+    -- add module files
+    target:add("cxxflags", "-fmodules-ts")
+    for _, modulefile in ipairs(modulefiles) do
+        target:add("cxxflags", "-fmodule-file=" .. modulefile)
+    end
+end
+
+-- build module files using msvc
+function _build_modulefiles_msvc(target, sourcebatch, opt)
+
+    -- attempt to compile the module files as cxx
+    local modulefiles = {}
+    opt = table.join(opt, {configs = {}})
+    sourcebatch.sourcekind = "cxx"
+    sourcebatch.objectfiles = sourcebatch.objectfiles or {}
+    sourcebatch.dependfiles = sourcebatch.dependfiles or {}
+    for _, sourcefile in ipairs(sourcebatch.sourcefiles) do
+        local objectfile = target:objectfile(sourcefile) 
+        local dependfile = target:dependfile(objectfile)
+        local modulefile = objectfile .. ".pcm"
+
+        -- compile module file to *.pcm
+        local singlebatch = {sourcekind = "cxx", sourcefiles = {sourcefile}, objectfiles = {objectfile}, dependfiles = {dependfile}}
+        opt.configs.cxxflags = {"/experimental:module /module:interface /module:output " .. os.args(modulefile), "/TP"}
+        import("private.action.build.object")(target, singlebatch, opt)
+        table.insert(modulefiles, modulefile)
+        table.insert(sourcebatch.objectfiles, objectfile)
+        table.insert(sourcebatch.dependfiles, dependfile)
+    end
+
+    -- add module files
+    for _, modulefile in ipairs(modulefiles) do
+        target:add("cxxflags", "/experimental:module /module:reference " .. os.args(modulefile))
+    end
+end
+
+-- build module files
+function main(target, sourcebatch, opt)
+
+    -- do compile
+    local compinst = compiler.load("cxx")
+    if compinst:name() == "clang" and compinst:has_flags("-fmodules-ts") then
+        _build_modulefiles_clang(target, sourcebatch, opt)
+    elseif compinst:name() == "cl" and compinst:has_flags("/experimental:module") then
+        _build_modulefiles_msvc(target, sourcebatch, opt)
+    else
+        raise("compiler(%s): does not support module!", compinst:name())
+    end
+end
+