diff --git a/configure.ac b/configure.ac
index a73976e..2bb011f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,10 +2,22 @@
 AC_PREREQ([2.69])
 AC_INIT([phosphor-host-ipmid], [1.0], [https://github.com/openbmc/phosphor-host-ipmid/issues])
 AC_CONFIG_HEADERS([config.h])
-AM_INIT_AUTOMAKE([subdir-objects -Wall -Werror foreign dist-xz])
+AM_INIT_AUTOMAKE([subdir-objects -Wall -Wno-portability -Werror foreign dist-xz])
 AM_SILENT_RULES([yes])
 AC_LANG([C++])
 
+# Make sure the default CFLAGS of `-O2 -g` don't override CODE_COVERAGE_CFLAGS
+# It is important that this comes before AC_PROG_C{C,XX}, as we are attempting
+# to stop them from populating default CFLAGS and CXXFLAGS.
+AS_IF([test "x$enable_code_coverage" != "xno"], [
+    AS_IF([test "x${CXXFLAGS+set}" != "xset"], [
+        AC_SUBST(CXXFLAGS, [""])
+    ])
+    AS_IF([test "x${CFLAGS+set}" != "xset"], [
+        AC_SUBST(CFLAGS, [""])
+    ])
+])
+
 # Checks for programs.
 AC_PROG_CXX
 AC_PROG_CC
@@ -77,6 +89,14 @@
 
 # Add code coverage tool
 AX_CODE_COVERAGE
+AS_IF([test "x$CODE_COVERAGE_ENABLED" = "xyes"], [
+    AX_APPEND_COMPILE_FLAGS([-DHAVE_GCOV], [CODE_COVERAGE_CPPFLAGS])
+])
+m4_ifdef([_AX_CODE_COVERAGE_RULES],
+    [AM_CONDITIONAL(AUTOCONF_CODE_COVERAGE_2019_01_06, [true])],
+    [AM_CONDITIONAL(AUTOCONF_CODE_COVERAGE_2019_01_06, [false])])
+AX_ADD_AM_MACRO_STATIC([])
+
 
 AC_ARG_VAR(WHITELIST_CONF, [Paths to IPMI whitelisted commands conf files. (default = ${srcdir}/host-ipmid-whitelist.conf)])
 if test -z "$WHITELIST_CONF"; then