diff --git a/support-specify-cc.patch b/support-specify-cc.patch
new file mode 100644
index 0000000..112c3e9
--- /dev/null
+++ b/support-specify-cc.patch
@@ -0,0 +1,12 @@
+diff -up ustr-1.0.4/Makefile.orig2 ustr-1.0.4/Makefile
+--- ustr-1.0.4/Makefile.orig2	2023-04-17 17:41:55.289194228 +0800
++++ ustr-1.0.4/Makefile	2023-04-17 17:41:58.941200484 +0800
+@@ -28,7 +28,7 @@ MBINDIR=$(libexecdir)/ustr-$(VERS_FULL)
+ ###############################################################################
+ HIDE=@
+ 
+-CC = cc
++CC ?= cc
+ AR = ar
+ RANLIB = ranlib
+ LDCONFIG = /sbin/ldconfig
diff --git a/ustr.spec b/ustr.spec
index 74fc427..a7dfbef 100644
--- a/ustr.spec
+++ b/ustr.spec
@@ -1,12 +1,13 @@
 Name:      ustr
 Version:   1.0.4
-Release:   29
+Release:   30
 Summary:   Micro String API for C
 License:   MIT or LGPLv2+ or BSD
 URL:       http://www.and.org/ustr/
 Source0:   http://www.and.org/ustr/%{version}/%{name}-%{version}.tar.bz2
 #Acknowledge Patch0 from Fedora
 Patch0:    c99-inline.patch
+Patch1:    support-specify-cc.patch
 
 BuildRequires: make
 BuildRequires: gcc
@@ -102,6 +103,9 @@ make $@ install-multilib-linux prefix=%{_prefix} \
 
 
 %changelog
+* Mon Apr 17 2023 jammyjellyfish <jammyjellyfish255@outlook.com> - 1.0.4-30
+- Support specify CC
+
 * Fri Jun 4 2021 zoulin<zoulin13@huawei.com> - 1.0.4-29
 - Add gcc and make to BuildRequires to use gcc command