diff --git a/configure.ac b/configure.ac
index b192d79..e7b9f44 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,6 +7,19 @@
 AM_INIT_AUTOMAKE([subdir-objects -Wall -Werror foreign dist-xz])
 AM_SILENT_RULES([yes])
 
+# 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$enable_tests" = "xno"], [enable_code_coverage=no])
+AS_IF([test "x$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
@@ -20,6 +33,14 @@
 # For linking
 LT_INIT
 
+# Code coverage
+AX_CODE_COVERAGE
+AM_EXTRA_RECURSIVE_TARGETS([check-code-coverage])
+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([])
+
 # Check/set gtest specific functions.
 AX_PTHREAD([GTEST_CPPFLAGS="-DGTEST_HAS_PTHREAD=1"],[GTEST_CPPFLAGS="-DGTEST_HAS_PTHREAD=0"])
 AC_SUBST(GTEST_CPPFLAGS)