diff --git a/Modify-neon-instruction.patch b/Modify-neon-instruction.patch
new file mode 100644
index 0000000..33dfa17
--- /dev/null
+++ b/Modify-neon-instruction.patch
@@ -0,0 +1,144 @@
+From 48c25d7907a6909ed92db94da6d52ae3ca91f17e Mon Sep 17 00:00:00 2001
+From: 15859157387 <977713017@qq.com>
+Date: Wed, 6 Sep 2023 09:10:25 +0800
+Subject: [PATCH] modify 2d to d
+
+---
+ newlib/libc/machine/aarch64/memchr.S    |  6 +++---
+ newlib/libc/machine/aarch64/strchr.S    |  6 +++---
+ newlib/libc/machine/aarch64/strchrnul.S |  6 +++---
+ newlib/libc/machine/aarch64/strrchr.S   | 10 +++++-----
+ 4 files changed, 14 insertions(+), 14 deletions(-)
+
+diff --git a/newlib/libc/machine/aarch64/memchr.S b/newlib/libc/machine/aarch64/memchr.S
+index 53f5d6b..81fcecc 100644
+--- a/newlib/libc/machine/aarch64/memchr.S
++++ b/newlib/libc/machine/aarch64/memchr.S
+@@ -110,7 +110,7 @@ def_fn memchr
+ 	and	vhas_chr2.16b, vhas_chr2.16b, vrepmask.16b
+ 	addp	vend.16b, vhas_chr1.16b, vhas_chr2.16b		/* 256->128 */
+ 	addp	vend.16b, vend.16b, vend.16b			/* 128->64 */
+-	mov	synd, vend.2d[0]
++	mov	synd, vend.d[0]
+ 	/* Clear the soff*2 lower bits */
+ 	lsl	tmp, soff, #1
+ 	lsr	synd, synd, tmp
+@@ -130,7 +130,7 @@ def_fn memchr
+ 	/* Use a fast check for the termination condition */
+ 	orr	vend.16b, vhas_chr1.16b, vhas_chr2.16b
+ 	addp	vend.2d, vend.2d, vend.2d
+-	mov	synd, vend.2d[0]
++	mov	synd, vend.d[0]
+ 	/* We're not out of data, loop if we haven't found the character */
+ 	cbz	synd, .Lloop
+ 
+@@ -140,7 +140,7 @@ def_fn memchr
+ 	and	vhas_chr2.16b, vhas_chr2.16b, vrepmask.16b
+ 	addp	vend.16b, vhas_chr1.16b, vhas_chr2.16b		/* 256->128 */
+ 	addp	vend.16b, vend.16b, vend.16b			/* 128->64 */
+-	mov	synd, vend.2d[0]
++	mov	synd, vend.d[0]
+ 	/* Only do the clear for the last possible block */
+ 	b.hi	.Ltail
+ 
+diff --git a/newlib/libc/machine/aarch64/strchr.S b/newlib/libc/machine/aarch64/strchr.S
+index 2448dbc..7061078 100644
+--- a/newlib/libc/machine/aarch64/strchr.S
++++ b/newlib/libc/machine/aarch64/strchr.S
+@@ -117,7 +117,7 @@ def_fn strchr
+ 	addp	vend1.16b, vend1.16b, vend2.16b		// 128->64
+ 	lsr	tmp1, tmp3, tmp1
+ 
+-	mov	tmp3, vend1.2d[0]
++	mov	tmp3, vend1.d[0]
+ 	bic	tmp1, tmp3, tmp1	// Mask padding bits.
+ 	cbnz	tmp1, .Ltail
+ 
+@@ -132,7 +132,7 @@ def_fn strchr
+ 	orr	vend2.16b, vhas_nul2.16b, vhas_chr2.16b
+ 	orr	vend1.16b, vend1.16b, vend2.16b
+ 	addp	vend1.2d, vend1.2d, vend1.2d
+-	mov	tmp1, vend1.2d[0]
++	mov	tmp1, vend1.d[0]
+ 	cbz	tmp1, .Lloop
+ 
+ 	/* Termination condition found.  Now need to establish exactly why
+@@ -146,7 +146,7 @@ def_fn strchr
+ 	addp	vend1.16b, vend1.16b, vend2.16b		// 256->128
+ 	addp	vend1.16b, vend1.16b, vend2.16b		// 128->64
+ 
+-	mov	tmp1, vend1.2d[0]
++	mov	tmp1, vend1.d[0]
+ .Ltail:
+ 	/* Count the trailing zeros, by bit reversing...  */
+ 	rbit	tmp1, tmp1
+diff --git a/newlib/libc/machine/aarch64/strchrnul.S b/newlib/libc/machine/aarch64/strchrnul.S
+index a0ac13b..fd2002f 100644
+--- a/newlib/libc/machine/aarch64/strchrnul.S
++++ b/newlib/libc/machine/aarch64/strchrnul.S
+@@ -109,7 +109,7 @@ def_fn strchrnul
+ 	addp	vend1.16b, vend1.16b, vend1.16b		// 128->64
+ 	lsr	tmp1, tmp3, tmp1
+ 
+-	mov	tmp3, vend1.2d[0]
++	mov	tmp3, vend1.d[0]
+ 	bic	tmp1, tmp3, tmp1	// Mask padding bits.
+ 	cbnz	tmp1, .Ltail
+ 
+@@ -124,7 +124,7 @@ def_fn strchrnul
+ 	orr	vhas_chr2.16b, vhas_nul2.16b, vhas_chr2.16b
+ 	orr	vend1.16b, vhas_chr1.16b, vhas_chr2.16b
+ 	addp	vend1.2d, vend1.2d, vend1.2d
+-	mov	tmp1, vend1.2d[0]
++	mov	tmp1, vend1.d[0]
+ 	cbz	tmp1, .Lloop
+ 
+ 	/* Termination condition found.  Now need to establish exactly why
+@@ -134,7 +134,7 @@ def_fn strchrnul
+ 	addp	vend1.16b, vhas_chr1.16b, vhas_chr2.16b		// 256->128
+ 	addp	vend1.16b, vend1.16b, vend1.16b		// 128->64
+ 
+-	mov	tmp1, vend1.2d[0]
++	mov	tmp1, vend1.d[0]
+ .Ltail:
+ 	/* Count the trailing zeros, by bit reversing...  */
+ 	rbit	tmp1, tmp1
+diff --git a/newlib/libc/machine/aarch64/strrchr.S b/newlib/libc/machine/aarch64/strrchr.S
+index d64fc09..1b6f075 100644
+--- a/newlib/libc/machine/aarch64/strrchr.S
++++ b/newlib/libc/machine/aarch64/strrchr.S
+@@ -120,10 +120,10 @@ def_fn strrchr
+ 	addp	vhas_chr1.16b, vhas_chr1.16b, vhas_chr2.16b	// 256->128
+ 	addp	vhas_nul1.16b, vhas_nul1.16b, vhas_nul1.16b	// 128->64
+ 	addp	vhas_chr1.16b, vhas_chr1.16b, vhas_chr1.16b	// 128->64
+-	mov	nul_match, vhas_nul1.2d[0]
++	mov	nul_match, vhas_nul1.d[0]
+ 	lsl	tmp1, tmp1, #1
+ 	mov	const_m1, #~0
+-	mov	chr_match, vhas_chr1.2d[0]
++	mov	chr_match, vhas_chr1.d[0]
+ 	lsr	tmp3, const_m1, tmp1
+ 
+ 	bic	nul_match, nul_match, tmp3	// Mask padding bits.
+@@ -146,15 +146,15 @@ def_fn strrchr
+ 	addp	vhas_chr1.16b, vhas_chr1.16b, vhas_chr2.16b	// 256->128
+ 	addp	vend1.16b, vend1.16b, vend1.16b	// 128->64
+ 	addp	vhas_chr1.16b, vhas_chr1.16b, vhas_chr1.16b	// 128->64
+-	mov	nul_match, vend1.2d[0]
+-	mov	chr_match, vhas_chr1.2d[0]
++	mov	nul_match, vend1.d[0]
++	mov	chr_match, vhas_chr1.d[0]
+ 	cbz	nul_match, .Lloop
+ 
+ 	and	vhas_nul1.16b, vhas_nul1.16b, vrepmask_0.16b
+ 	and	vhas_nul2.16b, vhas_nul2.16b, vrepmask_0.16b
+ 	addp	vhas_nul1.16b, vhas_nul1.16b, vhas_nul2.16b
+ 	addp	vhas_nul1.16b, vhas_nul1.16b, vhas_nul1.16b
+-	mov	nul_match, vhas_nul1.2d[0]
++	mov	nul_match, vhas_nul1.d[0]
+ 
+ .Ltail:
+ 	/* Work out exactly where the string ends.  */
+-- 
+2.27.0
+
diff --git a/newlib.spec b/newlib.spec
index 77d6e18..9b456a0 100644
--- a/newlib.spec
+++ b/newlib.spec
@@ -2,13 +2,15 @@
 %global _newlib newlib
 Name:           newlib
 Version:        3.3.0
-Release:        2
+Release:        3
 Summary:        Newlib is a C library intended for use on embedded systems.
 
 License:        BSD
 URL:            https://sourceware.org/newlib/
 Source0:        ftp://sourceware.org/pub/newlib/newlib-%{version}.tar.gz
 
+Patch01:      Modify-neon-instruction.patch
+
 BuildRequires:  make gcc binutils texinfo texinfo-tex
 
 %description
@@ -19,14 +21,20 @@ usable on embedded products.
 
 
 %prep
-%autosetup
+%autosetup -p1
 
 
 %build
 rm -rf build-newlib
 mkdir build-newlib
 cd build-newlib
+
+%if "%toolchain" == "clang"
+export CFLAGS="-O2 -D_FORTIFY_SOURCE=0 -ffreestanding"
+%else
 export CFLAGS="-O2 -D_FORTIFY_SOURCE=0"
+%endif
+
 ../newlib/configure --prefix=%{_prefix}
 make %{?_smp_mflags}
 cd ..
@@ -54,6 +62,9 @@ cd ..
 
 
 %changelog
+* Wed Sep 6 2023 renyi <977713017@qq.com> - 3.3.0-3
+- Support building this package with clang
+
 * Wed Dec 15 2021 jiangxinyu <jiangxinyu@kylinos.cn> - 3.3.0-2
 - Remove the release suffix