diff --git a/lmdb.spec b/lmdb.spec
index e73f06f2997cd152f93094783d13f0e722fb08ac..a5b0ae552f1ebc0f376ff4a82212865ca2478ed3 100644
--- a/lmdb.spec
+++ b/lmdb.spec
@@ -1,7 +1,7 @@
 %global commit_hash d87d682b6db9c04c1bee34e5cadbbcae4e6d9a67
 Name:           lmdb
 Version:        0.9.30
-Release:        2
+Release:        3
 Summary:        An extraordinarily fast, memory-efficient database
 License:        OLDAP-2.8
 URL:            http://symas.com/lmdb/
@@ -12,6 +12,7 @@ BuildRequires:  gcc, make, doxygen,
 
 Patch0:         lmdb-make.patch
 Patch1:         lmdb-s390-check.patch
+Patch2:         support-specify-cc.patch
 
 Provides:       %{name}-libs
 Obsoletes:      %{name}-libs < %{version}-%{release}
@@ -89,6 +90,9 @@ popd
 %license libraries/lib%{name}/LICENSE
 
 %changelog
+* Mon Apr 17 2023 jammyjellyfish <jammyjellyfish255@outlook.com> - 0.9.30-3
+- Support specify CC
+
 * Fri Nov 25 2022 wangjiang <wangjiang37@h-partners.com> - 0.9.30-2
 - fix obsoletes in spec
 
diff --git a/support-specify-cc.patch b/support-specify-cc.patch
new file mode 100644
index 0000000000000000000000000000000000000000..1dfd7733eb8a4101e6dc8c2c69fd17c1ea28bd4e
--- /dev/null
+++ b/support-specify-cc.patch
@@ -0,0 +1,12 @@
+diff -up openldap-LMDB_0.9.30-d87d682b6db9c04c1bee34e5cadbbcae4e6d9a67/libraries/liblmdb/Makefile.orig2 openldap-LMDB_0.9.30-d87d682b6db9c04c1bee34e5cadbbcae4e6d9a67/libraries/liblmdb/Makefile
+--- openldap-LMDB_0.9.30-d87d682b6db9c04c1bee34e5cadbbcae4e6d9a67/libraries/liblmdb/Makefile.orig2	2023-04-17 13:58:34.001243208 +0800
++++ openldap-LMDB_0.9.30-d87d682b6db9c04c1bee34e5cadbbcae4e6d9a67/libraries/liblmdb/Makefile	2023-04-17 14:01:51.153795000 +0800
+@@ -18,7 +18,7 @@
+ # There may be other macros in mdb.c of interest. You should
+ # read mdb.c before changing any of them.
+ #
+-CC	= gcc
++CC	?= gcc
+ AR	= ar
+ W	= -W -Wall -Wno-unused-parameter -Wbad-function-cast -Wuninitialized
+ THREADS = -pthread