diff --git a/dtc.spec b/dtc.spec
index b0c9b2954683c760ac402c7c118258e1e33c7041..a44b3d73a794f847e19363f44d26864c91d56967 100644
--- a/dtc.spec
+++ b/dtc.spec
@@ -2,7 +2,7 @@
 
 Name:         dtc
 Version:      1.7.0
-Release:      1
+Release:      2
 Summary:      Device tree compiler
 License:      GPLv2+
 URL:          https://devicetree.org/
@@ -14,6 +14,7 @@ Provides:      libfdt
 Obsoletes:     libfdt
 
 Patch1:        openEuler-add-secure-compile-option-in-Makefile.patch
+Patch2:        remove-ldflags-in-cflags.patch
 
 %description
 The devicetree is a data structure for describing hardware. Rather than hard coding
@@ -47,11 +48,17 @@ This package provides python3 bindings for libfdt
 
 %build
 export SETUPTOOLS_SCM_PRETEND_VERSION=%{version}
+%if "%toolchain" == "clang"
+    CFLAGS="$CFLAGS -Wno-error=cast-qual -Wno-error=missing-prototypes -Wno-error=unused-command-line-argument"
+%endif
 %make_build
 
 
 %install
 export SETUPTOOLS_SCM_PRETEND_VERSION=%{version}
+%if "%toolchain" == "clang"
+    CFLAGS="$CFLAGS -Wno-error=cast-qual -Wno-error=missing-prototypes -Wno-error=unused-command-line-argument"
+%endif
 make install DESTDIR=$RPM_BUILD_ROOT PREFIX=$RPM_BUILD_ROOT/usr \
              LIBDIR=%{_libdir} BINDIR=%{_bindir} INCLUDEDIR=%{_includedir} V=1
 
@@ -85,6 +92,9 @@ export SETUPTOOLS_SCM_PRETEND_VERSION=%{version}
 %doc Documentation/manual.txt
 
 %changelog
+* Fri Jul 14 2023 dillon chen <dillon.chen@gmail.com> - 1.7.0-2
+- add clang build from jammyjellyfish PR
+
 * Fri Jul 14 2023 dillon chen <dillon.chen@gmail.com> - 1.7.0-1
 - update version to 1.7.0
 
diff --git a/remove-ldflags-in-cflags.patch b/remove-ldflags-in-cflags.patch
new file mode 100644
index 0000000000000000000000000000000000000000..d5baa1967f8442fef1fb2cd60f85962aa4321fe2
--- /dev/null
+++ b/remove-ldflags-in-cflags.patch
@@ -0,0 +1,19 @@
+diff -up dtc-1.7.0/Makefile.orig2 dtc-1.7.0/Makefile
+--- dtc-1.7.0/Makefile.orig2	2023-04-21 18:28:46.693701292 +0800
++++ dtc-1.7.0/Makefile	2023-04-21 18:28:58.425735633 +0800
+@@ -20,12 +20,12 @@ CONFIG_LOCALVERSION =
+ # See libfdt_internal.h for details
+ ASSUME_MASK ?= 0
+ 
+-EXTRA_CFLAGS += -D_FORTIFY_SOURCE=2 -fstack-protector-strong -Wl,-z,now -fPIE
++EXTRA_CFLAGS += -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fPIE
+ LDFLAGS += -Wl,-z,now -pie
+ CPPFLAGS = -I libfdt -I . -DFDT_ASSUME_MASK=$(ASSUME_MASK)
+ WARNINGS = -Wall -Wpointer-arith -Wcast-qual -Wnested-externs -Wsign-compare \
+ 	-Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wshadow
+-CFLAGS = -g -Os $(SHAREDLIB_CFLAGS) -Werror $(WARNINGS) $(EXTRA_CFLAGS)
++CFLAGS += -g -Os $(SHAREDLIB_CFLAGS) -Werror $(WARNINGS) $(EXTRA_CFLAGS)
+ 
+ BISON = bison
+ LEX = flex
+