From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Wiles, Keith" <keith.wiles-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: fm10k_rxtx.c does not compile
Date: Wed, 18 Feb 2015 17:01:39 +0000
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I just pulled the code and found a unused function error =91dump_rxd()=92

I had to add the ifdef around the function and remove the ifdef inside the =
function:

#ifdef RTE_LIBRTE_FM10K_DEBUG_RX
static inline void dump_rxd(union fm10k_rx_desc *rxd)
{
RTE_SET_USED(rxd);
PMD_RX_LOG(DEBUG, "+----------------|----------------+");
PMD_RX_LOG(DEBUG, "|     GLORT      | PKT HDR & TYPE |");
PMD_RX_LOG(DEBUG, "|   0x%08x   |   0x%08x   |", rxd->d.glort,
rxd->d.data);
PMD_RX_LOG(DEBUG, "+----------------|----------------+");
PMD_RX_LOG(DEBUG, "|   VLAN & LEN   |     STATUS     |");
PMD_RX_LOG(DEBUG, "|   0x%08x   |   0x%08x   |", rxd->d.vlan_len,
rxd->d.staterr);
PMD_RX_LOG(DEBUG, "+----------------|----------------+");
PMD_RX_LOG(DEBUG, "|    RESERVED    |    RSS_HASH    |");
PMD_RX_LOG(DEBUG, "|   0x%08x   |   0x%08x   |", 0, rxd->d.rss);
PMD_RX_LOG(DEBUG, "+----------------|----------------+");
PMD_RX_LOG(DEBUG, "|            TIME TAG             |");
PMD_RX_LOG(DEBUG, "|       0x%016lx        |", rxd->q.timestamp);
PMD_RX_LOG(DEBUG, "+----------------|----------------+");
}
#endif

Also clang on Ubuntu 14.04 does not like the option:
  CC fm10k_pf.o
error: unknown warning option '-Wno-unused-but-set-variable'; did you mean =
'-Wno-unused-const-variable'? [-Werror,-Wunknown-warning-option]