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-rw-r--r--xmake/rules/c++/modules/config.lua4
1 files changed, 4 insertions, 0 deletions
diff --git a/xmake/rules/c++/modules/config.lua b/xmake/rules/c++/modules/config.lua
index a39e4c4e0..90d34cfdc 100644
--- a/xmake/rules/c++/modules/config.lua
+++ b/xmake/rules/c++/modules/config.lua
@@ -25,6 +25,10 @@ function main(target)
-- we disable to build across targets in parallel, because the source files may depend on other target modules
-- @see https://github.com/xmake-io/xmake/issues/1858
if support.contains_modules(target) then
+
+ -- unity build can't work with modules
+ assert(not target:rule("c++.unity_build"), "C++ unity build is not compatible with C++ modules")
+
-- @note this will cause cross-parallel builds to be disabled for all sub-dependent targets,
-- even if some sub-targets do not contain C++ modules.
--