diff --git a/bwa.spec b/bwa.spec
index c375616..b39597b 100644
--- a/bwa.spec
+++ b/bwa.spec
@@ -1,11 +1,13 @@
 Name:                bwa
 Version:             0.7.18
-Release:             1
+Release:             2
 Summary:             Burrows-Wheeler Alignment tool
 License:             GPLv3 and MIT
 URL:                 https://github.com/lh3/bwa
 Source0:             https://github.com/lh3/bwa/releases/download/v%{version}/%{name}-%{version}.tar.gz
+%ifnarch riscv64
 Patch1:              bwa-simde.patch
+%endif
 BuildRequires:       gcc perl-generators
 %ifnarch x86_64
 BuildRequires:       simde-devel
@@ -28,7 +30,11 @@ CFLAGS="${CFLAGS} -DUSE_SIMDE -DSIMDE_ENABLE_NATIVE_ALIASES -fopenmp-simd -DSIMD
 CFLAGS="${CFLAGS} -D__SSE2__ -DSIMDE_ENABLE_NATIVE_ALIASES -fopenmp-simd -DSIMDE_ENABLE_OPENMP"
 %endif
 
+%if "%{?toolchain}" == "clang" 
+%make_build CC=clang CFLAGS="${CFLAGS}"
+%else 
 %make_build CFLAGS="${CFLAGS}"
+%endif
 
 %install
 rm -rf %{buildroot}
@@ -53,6 +59,9 @@ install -m 0644 bwa.1 %{buildroot}/%{_mandir}/man1/bwa.1
 %{_mandir}/man1/%{name}.1*
 
 %changelog
+* Wed Aug 28 2024 wangqiang <wangqiang1@kylinos.cn> - 0.7.18-2
+- Support build with clang
+
 * Mon Jul 8 2024 Ge Wang <wang__ge@126.com> - 0.7.18-1
 - Update to version 0.7.18