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-rw-r--r--sunrpc/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/sunrpc/Makefile b/sunrpc/Makefile
index b3e71ad390..f2c31c73a0 100644
--- a/sunrpc/Makefile
+++ b/sunrpc/Makefile
@@ -132,7 +132,7 @@ $(objpfx)rpcgen: $(addprefix $(objpfx),$(rpcgen-objs)) \
$(+link)
# Tell rpcgen where to find the C preprocessor.
-rpcgen-cmd = $(built-program-cmd) -Y ../scripts
+rpcgen-cmd = CPP='$(CC) -E -x c-header' $(built-program-cmd) -Y ../scripts
# Install the rpc data base file.
$(inst_sysconfdir)/rpc: etc.rpc $(+force)