diff --git a/recipes/llvm18.toml b/recipes/llvm18.toml
index 4c2bd6ec..b066c852 100644
--- a/recipes/llvm18.toml
+++ b/recipes/llvm18.toml
@@ -27,6 +27,8 @@ CC=gcc CXX='g++ -static-libstdc++ -static-libgcc' \
 cmake -S llvm -B build -G Ninja \
   -DCMAKE_BUILD_TYPE=Release \
   -DCMAKE_INSTALL_PREFIX=/usr \
+  -DCMAKE_CXX_FLAGS="-include cstdint" \
+  -DCMAKE_C_FLAGS="-include stdint.h" \
   -DLLVM_TARGETS_TO_BUILD=X86 \
   -DLLVM_BUILD_LLVM_DYLIB=ON \
   -DLLVM_LINK_LLVM_DYLIB=ON \