diff --git a/genwqe-tools.spec b/genwqe-tools.spec
index 571427db87f97546c75b60773f5bc58228f6421e..5801c482b61c68a832a108704cf8771bf43b2566 100644
--- a/genwqe-tools.spec
+++ b/genwqe-tools.spec
@@ -1,7 +1,7 @@
 Summary:             GenWQE userspace tools
 Name:                genwqe-tools
 Version:             4.0.20
-Release:             1
+Release:             2
 License:             ASL 2.0
 URL:                 https://github.com/ibm-genwqe/genwqe-user/
 BuildRequires:       gcc zlib-devel >= 1.2.7 help2man
@@ -11,6 +11,7 @@ BuildRequires:       libcxl-devel
 Source0:             https://github.com/ibm-genwqe/genwqe-user/archive/v%{version}.tar.gz#/genwqe-user-%{version}.tar.gz
 Patch0:              genwqe-user-4.0.18-install-gzFile_test.patch
 Patch1:              genwqe-user-4.0.18-modifyFuntionName.patch
+Patch2:              support-specify-cc.patch
 Requires:            genwqe-zlib = %{version}-%{release}
 %description
 Provide a suite of utilities to manage and configure the IBM GenWQE card.
@@ -117,5 +118,8 @@ rmdir %{buildroot}%{_libdir}/genwqe/
 %{_libdir}/*.a
 
 %changelog
+* Fri Apr 14 2023 jammyjellyfish <jammyjellyfish255@outlook.com> - 4.0.20-2
+- Support specify CC
+
 * Thu Aug 13 2020 tuShenmei <tushenmei@huawei.com> - 4.0.20-1
 - package init
diff --git a/support-specify-cc.patch b/support-specify-cc.patch
new file mode 100644
index 0000000000000000000000000000000000000000..3385c4e44beaade4b39b9900ec4e61f33ad38a53
--- /dev/null
+++ b/support-specify-cc.patch
@@ -0,0 +1,33 @@
+diff -up genwqe-user-4.0.20/config.mk.orig2 genwqe-user-4.0.20/config.mk
+--- genwqe-user-4.0.20/config.mk.orig2	2023-04-21 10:34:13.040174041 +0800
++++ genwqe-user-4.0.20/config.mk	2023-04-21 10:35:05.669606777 +0800
+@@ -20,10 +20,10 @@
+ #   V=2 means full output
+ #
+ V		?= 1
+-CC		= $(CROSS)gcc
+-AS		= $(CROSS)as
+-LD		= $(CROSS)ld
+-AR		= $(CROSS)ar
++CC		?= $(CROSS)gcc
++AS		?= $(CROSS)as
++LD		?= $(CROSS)ld
++AR		?= $(CROSS)ar
+ RANLIB		= $(CROSS)ranlib
+ OBJCOPY		= $(CROSS)objcopy
+ OBJDUMP		= $(CROSS)objdump
+@@ -40,10 +40,10 @@ endif
+ ifeq ($(V),1)
+ MAKEFLAGS	+= --silent
+ MAKE		+= -s
+-CC		= printf "\t[CC]\t%s\n" `basename "$@"`; $(CROSS)gcc
+-AS		= printf "\t[AS]\t%s\n" `basename "$@"`; $(CROSS)as
+-AR		= printf "\t[AR]\t%s\n" `basename "$@"`; $(CROSS)ar
+-LD		= printf "\t[LD]\t%s\n" `basename "$@"`; $(CROSS)ld
++CC		:= printf "\t[CC]\t%s\n" `basename "$@"`; $(CC)
++AS		:= printf "\t[AS]\t%s\n" `basename "$@"`; $(AS)
++AR		:= printf "\t[AR]\t%s\n" `basename "$@"`; $(LD)
++LD		:= printf "\t[LD]\t%s\n" `basename "$@"`; $(AR)
+ OBJCOPY		= printf "\t[OBJCOPY]\t%s\n" `basename "$@"`; $(CROSS)objcopy
+ else
+ CLEAN		= echo -n