1diff --git a/configure.ac b/configure.ac
2index 001ebfc2893b..7d19ebcd213f 100644
3--- a/configure.ac
4+++ b/configure.ac
5@@ -215,7 +215,7 @@ AC_SUBST([testdir])
6 ##########################################################################
7 AM_CONDITIONAL([netmap_support], [test x$netmap_support = xyes ])
8 AM_CONDITIONAL([PKTIO_DPDK], [test x$pktio_dpdk_support = xyes ])
9-AM_CONDITIONAL([HAVE_PCAP], [test $have_pcap = yes])
10+AM_CONDITIONAL([HAVE_PCAP], [test x$have_pcap = xyes])
11 AM_CONDITIONAL([DPDK_DEFAULT_DIR], [test "x${DPDK_DEFAULT_DIR}" = "x1"])
12 AM_CONDITIONAL([test_installdir], [test "$testdir" != ""])
13 AM_CONDITIONAL([cunit_support], [test x$cunit_support = xyes ])
14@@ -320,18 +320,6 @@ ODP_CFLAGS="$ODP_CFLAGS -Wcast-align -Wnested-externs -Wcast-qual -Wformat-nonli
15 ODP_CFLAGS="$ODP_CFLAGS -Wformat-security -Wundef -Wwrite-strings"
16 ODP_CFLAGS="$ODP_CFLAGS -std=gnu99"
17
18-dnl Use -Werror in the checks below since Clang emits a warning instead of
19-dnl an error when it encounters an unknown warning option.
20-AX_CHECK_COMPILE_FLAG([-Wimplicit-fallthrough=0],
21- [ODP_CFLAGS="$ODP_CFLAGS -Wimplicit-fallthrough=0"],
22- [], [-Werror])
23-AX_CHECK_COMPILE_FLAG([-Wformat-truncation=0],
24- [ODP_CFLAGS="$ODP_CFLAGS -Wformat-truncation=0"],
25- [], [-Werror])
26-AX_CHECK_COMPILE_FLAG([-Wformat-overflow=0],
27- [ODP_CFLAGS="$ODP_CFLAGS -Wformat-overflow=0"],
28- [], [-Werror])
29-
30 # Extra flags for example to suppress certain warning types
31 ODP_CFLAGS="$ODP_CFLAGS $ODP_CFLAGS_EXTRA"
32