diff --git a/build/php.m4 b/build/php.m4
index 1504bfe12cd0d..4517bd699641e 100644
--- a/build/php.m4
+++ b/build/php.m4
@@ -2040,6 +2040,7 @@ dnl
 dnl This macro is used to get a comparable version for Apache.
 dnl
 AC_DEFUN([PHP_AP_EXTRACT_VERSION],[
+AS_IF([test -x "$1"], [
   ac_output=`$1 -v 2>&1 | grep version | $SED -e 's/Oracle-HTTP-//'`
   ac_IFS=$IFS
 IFS="- /.
@@ -2049,6 +2050,7 @@ IFS="- /.
 
   APACHE_VERSION=`expr [$]4 \* 1000000 + [$]5 \* 1000 + [$]6`
 ])
+])
 
 dnl
 dnl PHP_CONFIG_NICE(filename)
diff --git a/sapi/apache2handler/config.m4 b/sapi/apache2handler/config.m4
index 4e70793678cad..b4593c6a0e95b 100644
--- a/sapi/apache2handler/config.m4
+++ b/sapi/apache2handler/config.m4
@@ -34,6 +34,11 @@ if test "$PHP_APXS2" != "no"; then
 
   APXS_INCLUDEDIR=`$APXS -q INCLUDEDIR`
   APXS_HTTPD=`$APXS -q SBINDIR`/`$APXS -q TARGET`
+  AS_IF([test ! -x "$APXS_HTTPD"], [AC_MSG_ERROR([m4_normalize([
+    $APXS_HTTPD executable not found. Please, install Apache HTTP Server
+    command-line utility.
+  ])])])
+
   APXS_CFLAGS=`$APXS -q CFLAGS`
   APU_BINDIR=`$APXS -q APU_BINDIR`
   APR_BINDIR=`$APXS -q APR_BINDIR`