diff --git a/0001-Support-specify-CC.patch b/0001-Support-specify-CC.patch
new file mode 100644
index 0000000000000000000000000000000000000000..a197d898d0a2aaeb9eda741136f5588bebbb48eb
--- /dev/null
+++ b/0001-Support-specify-CC.patch
@@ -0,0 +1,28 @@
+From c90782c682df0488d51e245d6413be336b7f6782 Mon Sep 17 00:00:00 2001
+From: jammyjellyfish <jammyjellyfish255@outlook.com>
+Date: Wed, 19 Apr 2023 14:46:09 +0800
+Subject: [PATCH] Support specify CC
+
+Makefile set CC compiler as gcc, and not reading CC from
+environment variable. This patch lets Makefile read $CC
+environment variable and use it as compiler, if exists
+---
+ Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 752e550..0297cf7 100644
+--- a/Makefile
++++ b/Makefile
+@@ -18,7 +18,7 @@
+ 
+ PREFIX=/usr/local
+ 
+-CC=gcc
++CC?=gcc
+ INSTALL=install
+ 
+ VERSION=2.1.0
+-- 
+2.40.0
+
diff --git a/tree.spec b/tree.spec
index abbeab78783ae9d3a03924a0cb2b80f180f14591..df665b9b6c20e4c86318fba5b42e81f87a739bfb 100644
--- a/tree.spec
+++ b/tree.spec
@@ -1,12 +1,13 @@
 Name:     tree
 Version:  2.1.0
-Release:  1
+Release:  2
 Summary:  Tree file viewer tool
 License:  GPLv2+
 URL:      http://mama.indstate.edu/users/ice/tree/
 
 Source0:  http://mama.indstate.edu/users/ice/tree/src/%{name}-%{version}.tgz
 Source1:  ftp://mama.indstate.edu/linux/tree/%{name}-%{version}.tgz
+Patch0:   0001-Support-specify-CC.patch
 
 BuildRequires: gcc
 
@@ -45,6 +46,9 @@ install -D -m 644 doc/tree.1 $RPM_BUILD_ROOT%{_mandir}/man1/tree.1
 %{_mandir}/man1/*
 
 %changelog
+* Wed Apr 19 2023 jammyjellyfish <jammyjellyfish255@outlook.com> - 2.1.0-2
+- Support specify CC
+
 * Thu Feb 09 2023 Kunlin Yang <yangkunlin7@huawei.com> - 2.1.0-1
 - upgrade package from 2.0.4 to 2.1.0