diff --git a/llvm.spec b/llvm.spec
index 21d538a..e6d9925 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -158,6 +158,10 @@ BuildRequires:	python3-setuptools
 # For origin certification
 BuildRequires:	gnupg2
 
+%if %{with pgo_instrumented_build}
+BuildRequires:	compiler-rt
+%endif
+
 
 Requires:	%{name}-libs%{?_isa} = %{version}-%{release}