diff --git a/kabi-dw-multiple-definition-yyin.patch b/kabi-dw-multiple-definition-yyin.patch
new file mode 100644
index 0000000..2e808ae
--- /dev/null
+++ b/kabi-dw-multiple-definition-yyin.patch
@@ -0,0 +1,8 @@
+--- ./parser.h.xiugai	2021-08-03 20:48:31.260494920 +0800
++++ ./parser.h	2021-08-03 20:48:45.900664125 +0800
+@@ -30,4 +30,4 @@
+
+ int yylex();
+ int yyerror(obj_t **root, char *s);
+-FILE *yyin;
++extern FILE *yyin;
diff --git a/kabi-dw.spec b/kabi-dw.spec
index 92cb08a..10780f1 100644
--- a/kabi-dw.spec
+++ b/kabi-dw.spec
@@ -3,11 +3,12 @@
 %global shortcommit %(c=%{commit}; echo ${c:0:7})
 Name:                kabi-dw
 Version:             0
-Release:             1
+Release:             2
 Summary:             Detect changes in the ABI between kernel builds
 License:             GPLv3+
 URL:                 https://github.com/skozina/%{name}
 Source0:             %{url}/archive/%{commit}/%{name}-%{shortcommit}.tar.gz
+Patch0:		     kabi-dw-multiple-definition-yyin.patch
 BuildRequires:       elfutils-devel gcc bison flex glib2-devel openEuler-rpm-config
 %description
 The aim of kabi-dw is to detect any changes in the ABI between the successive
@@ -17,7 +18,7 @@ later comparing the text files.
 
 %prep
 %setup -q -n %{name}-%{commit}
-
+%patch0 -p1
 %build
 %set_build_flags
 %make_build
@@ -32,5 +33,8 @@ install -m 0755 %{name} %{buildroot}%{_bindir}/
 %license COPYING
 
 %changelog
+* Mon Aug 2 2021 liushaofei <liushaofei5@huawei.com>
+- fix multiple definition
+
 * Wed Aug 12 2020 tuShenmei <tushenmei@huawei.com> - 0-1
 - package init