diff --git a/configure.ac b/configure.ac
index 9d6c21a6ff..1e70495fa2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -449,19 +449,6 @@ elif test "x${ax_cv_c_compiler_vendor}" = "xgnu" ; then
     fi
 fi
 
-#  Enable clang address sanitizer bit build
-AC_ARG_ENABLE(address_sanitizer,
-  [AC_HELP_STRING([--enable-address-sanitizer],[build with address sanitizer])],
-  [enable_address_sanitizer="$enable_address_sanitizer"],
-  [enable_address_sanitizer="no"])
-
-if test "${enable_address_sanitizer}" = "yes"; then
-  APR_ADDTO(CFLAGS, -fsanitize=address -fno-omit-frame-pointer)
-  APR_ADDTO(CXXFLAGS, -fsanitize=address -fno-omit-frame-pointer)
-  APR_ADDTO(LDFLAGS, -fsanitize=address)
-fi
-
-
 case "${ax_cv_c_compiler_vendor}" in
 sun)
 	VISIBILITY_FLAG=-xldscope=hidden
@@ -1818,6 +1805,18 @@ AC_SUBST(SNMP_LIBS)
 
 CHECK_ERLANG
 
+#  Enable clang address sanitizer bit build
+AC_ARG_ENABLE(address_sanitizer,
+  [AC_HELP_STRING([--enable-address-sanitizer],[build with address sanitizer])],
+  [enable_address_sanitizer="$enable_address_sanitizer"],
+  [enable_address_sanitizer="no"])
+
+if test "${enable_address_sanitizer}" = "yes"; then
+  APR_ADDTO(CFLAGS, -fsanitize=address -fno-omit-frame-pointer)
+  APR_ADDTO(CXXFLAGS, -fsanitize=address -fno-omit-frame-pointer)
+  APR_ADDTO(LDFLAGS, -fsanitize=address)
+fi
+
 # we never use this, and hard setting it will make cross compile work better
 ac_cv_file_dbd_apr_dbd_mysql_c=no
 
diff --git a/libs/apr/build/apr_network.m4 b/libs/apr/build/apr_network.m4
index 712908f4ba..d8b1bcad27 100644
--- a/libs/apr/build/apr_network.m4
+++ b/libs/apr/build/apr_network.m4
@@ -50,11 +50,14 @@ int main(void) {
     hints.ai_socktype = SOCK_STREAM;
     error = getaddrinfo("127.0.0.1", NULL, &hints, &ai);
     if (error) {
+        freeaddrinfo(ai);
         exit(1);
     }
     if (ai->ai_addr->sa_family != AF_INET) {
+        freeaddrinfo(ai);
         exit(1);
     }
+    freeaddrinfo(ai);
     exit(0);
 }
 ],[
@@ -92,12 +95,15 @@ AC_DEFUN([APR_CHECK_GETADDRINFO_ADDRCONFIG], [
 
 int main(int argc, char **argv) {
     struct addrinfo hints, *ai;
+    int ret;
 
     memset(&hints, 0, sizeof(hints));
     hints.ai_family = AF_UNSPEC;
     hints.ai_socktype = SOCK_STREAM;
     hints.ai_flags = AI_ADDRCONFIG;
-    return getaddrinfo("localhost", NULL, &hints, &ai) != 0;
+    ret = getaddrinfo("localhost", NULL, &hints, &ai) != 0;
+    freeaddrinfo(ai);
+    return ret;
 }], [apr_cv_gai_addrconfig=yes], 
     [apr_cv_gai_addrconfig=no],
     [apr_cv_gai_addrconfig=no])])
diff --git a/libs/libdingaling/configure.ac b/libs/libdingaling/configure.ac
index 57aa712c84..0d7e832fa1 100755
--- a/libs/libdingaling/configure.ac
+++ b/libs/libdingaling/configure.ac
@@ -136,7 +136,6 @@ AC_STRUCT_TM
 
 # Checks for library functions.
 AC_PROG_GCC_TRADITIONAL
-AC_FUNC_MALLOC
 AC_TYPE_SIGNAL
 AC_FUNC_STRFTIME
 #AC_CHECK_FUNCS([gethostname gettimeofday localtime_r memmove memset socket strcasecmp strchr strdup strncasecmp strstr])
diff --git a/libs/libzrtp/configure.ac b/libs/libzrtp/configure.ac
index 251c51acc1..5ac158109c 100644
--- a/libs/libzrtp/configure.ac
+++ b/libs/libzrtp/configure.ac
@@ -66,7 +66,6 @@ AC_CHECK_TYPES([int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,uint64_t,int64_
 AC_C_CONST
 
 # Checks for library functions.
-AC_FUNC_MALLOC
 AC_CHECK_FUNCS([memset memcpy malloc free]) 
 AC_CHECK_FUNCS([usleep nanosleep])
 AC_CHECK_FUNCS([fopen fread])
diff --git a/libs/spandsp/configure.ac b/libs/spandsp/configure.ac
index baef75ef69..92354bd246 100644
--- a/libs/spandsp/configure.ac
+++ b/libs/spandsp/configure.ac
@@ -154,11 +154,6 @@ AC_FUNC_VPRINTF
 AC_FUNC_MEMCMP
 AC_FUNC_MEMMOVE
 
-if test "${ax_cv_c_compiler_vendor}" = "gnu"
-  then
-    AC_FUNC_REALLOC
-    AC_FUNC_MALLOC
-fi
 AC_FUNC_SELECT_ARGTYPES
 
 AX_C99_FUNC_LRINT
diff --git a/libs/unimrcp/configure.ac b/libs/unimrcp/configure.ac
index b13c0fab4c..851f56d71b 100644
--- a/libs/unimrcp/configure.ac
+++ b/libs/unimrcp/configure.ac
@@ -190,6 +190,18 @@ AC_ARG_ENABLE(test-suites,
     [enable_test_suites="$enableval"],
     [enable_test_suites="no"])
 
+#  Enable clang address sanitizer bit build
+AC_ARG_ENABLE(address_sanitizer,
+  [AC_HELP_STRING([--enable-address-sanitizer],[build with address sanitizer])],
+  [enable_address_sanitizer="$enable_address_sanitizer"],
+  [enable_address_sanitizer="no"])
+
+if test "${enable_address_sanitizer}" = "yes"; then
+  APR_ADDTO(CFLAGS, -fsanitize=address -fno-omit-frame-pointer)
+  APR_ADDTO(CXXFLAGS, -fsanitize=address -fno-omit-frame-pointer)
+  APR_ADDTO(LDFLAGS, -fsanitize=address)
+fi
+
 AM_CONDITIONAL([TEST_SUITES],[test "${enable_test_suites}" != "no"])
 
 AM_CONDITIONAL(ISMAC, [test `uname -s` = Darwin])