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-rw-r--r--compilerplugins/Makefile-clang.mk3
1 files changed, 2 insertions, 1 deletions
diff --git a/compilerplugins/Makefile-clang.mk b/compilerplugins/Makefile-clang.mk
index 868b5b0c9568..cc2bdc7674c3 100644
--- a/compilerplugins/Makefile-clang.mk
+++ b/compilerplugins/Makefile-clang.mk
@@ -25,7 +25,8 @@ CLANGCXXFLAGS=-O2 -Wall -Wextra -Wundef -g
# Clang headers require these.
CLANGDEFS=-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -fno-rtti
# All include locations needed.
-CLANGINCLUDES=-isystem $(CLANGDIR)/include -isystem $(CLANGDIR)/tools/clang/include
+CLANGINCLUDES=$(if $(filter /usr,$(CLANGDIR)),,-isystem $(CLANGDIR)/include) \
+ -isystem $(CLANGDIR)/tools/clang/include
# Clang/LLVM libraries are intentionally not linked in, they are usually built as static libraries, which means the resulting
# plugin would be big (even though the clang binary already includes it all) and it'd be necessary to explicitly specify