diff --git a/jbigkit.spec b/jbigkit.spec
index 01a5882c664f8912b6c583db35d3ae0b5cd4e9d0..9f8ea8969ed807236dc6fefa1d695d30c924a19d 100644
--- a/jbigkit.spec
+++ b/jbigkit.spec
@@ -1,6 +1,6 @@
 Name:           jbigkit
 Version:        2.1
-Release:        21
+Release:        22
 Summary:        Lossless image compression library
 
 License:        GPLv2+
@@ -13,6 +13,7 @@ Patch1:         jbigkit-2.0-warnings.patch
 Patch2:         jbigkit-ldflags.patch
 
 Patch6000:      backport-CVE-2017-9937.patch
+Patch6001:      support-specify-cc.patch
 
 BuildRequires:  gcc
 Requires:       %{name}-libs = %{version}-%{release}
@@ -84,6 +85,9 @@ make test
 %{_mandir}/man1/*
 
 %changelog
+* Sun Apr 16 2023 jammyjellyfish <jammyjellyfish255@outlook.com> - 2.1-22
+- Support specify CC
+
 * Fri Jan 13 2023 zhouwenpei <zhouwenpei1@h-partners.com> - 2.1-21
 - fix build fail
 
diff --git a/support-specify-cc.patch b/support-specify-cc.patch
new file mode 100644
index 0000000000000000000000000000000000000000..701b071d2ba4cdbd2fef7152f308faeccaa0ad06
--- /dev/null
+++ b/support-specify-cc.patch
@@ -0,0 +1,36 @@
+diff -up jbigkit-2.1/libjbig/Makefile.orig2 jbigkit-2.1/libjbig/Makefile
+--- jbigkit-2.1/libjbig/Makefile.orig2	2023-04-16 16:44:13.690431844 +0800
++++ jbigkit-2.1/libjbig/Makefile	2023-04-16 16:44:42.118544267 +0800
+@@ -1,7 +1,7 @@
+ # Unix makefile for the JBIG-KIT library
+ 
+ # Select an ANSI/ISO C compiler here, GNU gcc is recommended
+-CC = gcc
++CC ?= gcc
+ 
+ # Options for the compiler: A high optimization level is suggested
+ CFLAGS = $(RPM_OPT_FLAGS) -W -Wall -ansi -pedantic # --coverage
+diff -up jbigkit-2.1/Makefile.orig2 jbigkit-2.1/Makefile
+--- jbigkit-2.1/Makefile.orig2	2023-04-16 16:43:38.182291412 +0800
++++ jbigkit-2.1/Makefile	2023-04-16 16:45:00.230615896 +0800
+@@ -1,7 +1,7 @@
+ # Unix makefile for JBIG-KIT
+ 
+ # Select an ANSI/ISO C compiler here, GNU gcc is recommended
+-CC = gcc
++CC ?= gcc
+ 
+ # Options for the compiler: A high optimization level is suggested
+ CFLAGS = $(RPM_OPT_FLAGS) -W -Wno-unused-result
+diff -up jbigkit-2.1/pbmtools/Makefile.orig2 jbigkit-2.1/pbmtools/Makefile
+--- jbigkit-2.1/pbmtools/Makefile.orig2	2023-04-16 16:44:32.126504750 +0800
++++ jbigkit-2.1/pbmtools/Makefile	2023-04-16 16:44:48.254568533 +0800
+@@ -1,7 +1,7 @@
+ # Unix makefile for the JBIG-KIT PBM tools
+ 
+ # Select an ANSI/ISO C compiler here, e.g. GNU gcc is recommended
+-CC = gcc
++CC ?= gcc
+ 
+ # Options for the compiler
+ CFLAGS = $(RPM_OPT_FLAGS) -W -Wall -Wno-unused-result -ansi -pedantic # --coverage