diff options
| -rw-r--r-- | xmake/rules/c++/modules/modules_support/clang.lua | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/xmake/rules/c++/modules/modules_support/clang.lua b/xmake/rules/c++/modules/modules_support/clang.lua index 0e91aadae..a81dd01f7 100644 --- a/xmake/rules/c++/modules/modules_support/clang.lua +++ b/xmake/rules/c++/modules/modules_support/clang.lua @@ -275,6 +275,35 @@ function generate_dependencies(target, sourcebatch, opt) changed = true local dependinfo = io.readfile(jsonfile) + if not target:data("cxx.modules.use_libc++") then + local has_std_modules = false + for _, r in ipairs (dependinfo.rules) do + for _, required in ipairs(r.requires) do + if required["logical-name"] == "std" or required["logical-name"] == "std.compat" then + has_std_modules = true + break + end + end + + if has_std_modules then + break + end + end + + assert(not (has_std_modules and target:values("c++.clang.modules.strict")), + [[On llvm <= 16 standard C++ modules are not supported ; + they can be emulated through clang modules and supported only on libc++ ; + please add -stdlib=libc++ cxx flag or disable strict mode]]) + + if has_std_modules then + target:data_set("cxx.modules.use_libc++", true) + if target:data("cxx.modules.use_libc++") then + target:add("cxxflags", "-stdlib=libc++") + target:add("syslinks", "c++") + end + end + end + return {moduleinfo = dependinfo} end, {dependfile = dependfile, files = {sourcefile}}) end |