Commit 97e70a593589e8f0432a748b4b93c3cdc18b9e5a added the option -pie to CFLAGS and LDFLAGS, however '-pie' is just a linker option.  That wouldn't be a problem.  However, clang is checking for that and outputs an error or unused argument: error: argument unused during compilation: '-pie' Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com&gt; ---  m4/virt-compile-pie.m4 | 2 +-  1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/m4/virt-compile-pie.m4 b/m4/virt-compile-pie.m4 index c0fb346ff784..a2df38ea7272 100644 --- a/m4/virt-compile-pie.m4 +++ b/m4/virt-compile-pie.m4 @@ -26,7 +26,7 @@ AC_DEFUN([LIBVIRT_COMPILE_PIE],[           ;; dnl All code is position independent on Win32 target        *)        gl_COMPILER_OPTION_IF([-fPIE -DPIE -pie], [ -        PIE_CFLAGS="-fPIE -DPIE -pie" +        PIE_CFLAGS="-fPIE -DPIE"          PIE_LDFLAGS="-pie"        ])      esac