diff --git a/configure.in b/configure.in
index 0dd8e23b81e..7da3ef7e217 100644
--- a/configure.in
+++ b/configure.in
@@ -946,7 +946,7 @@ if test "$ac_cv_lib_crypt_crypt" = "yes"; then
   EXTRA_LIBS="-lcrypt $EXTRA_LIBS -lcrypt"
 fi
 
-unset LIBS LDFLAGS
+#unset LIBS LDFLAGS
 
 dnl PEAR
 dnl -------------------------------------------------------------------------
@@ -1029,7 +1029,7 @@ if test "$abs_srcdir" != "$abs_builddir"; then
 fi
 
 ZEND_EXTRA_LIBS="$LIBS"
-unset LIBS LDFLAGS
+#unset LIBS LDFLAGS
 
 PHP_HELP_SEPARATOR([TSRM:])
 PHP_CONFIGURE_PART(Configuring TSRM)
@@ -1041,7 +1041,7 @@ fi
 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $LDFLAGS"
 EXTRA_LDFLAGS_PROGRAM="$EXTRA_LDFLAGS_PROGRAM $LDFLAGS"
 EXTRA_LIBS="$EXTRA_LIBS $LIBS"
-unset LIBS LDFLAGS
+#unset LIBS LDFLAGS
 
 test "$prefix" = "NONE" && prefix=/usr/local
 test "$exec_prefix" = "NONE" && exec_prefix='${prefix}'