diff --git a/tcl.spec b/tcl.spec
index d9470755f9147540aec55a14d17aa938882c2da2..ac252ca2d853f2812b7257d872dff2360a1ed2d3 100644
--- a/tcl.spec
+++ b/tcl.spec
@@ -2,7 +2,7 @@
 
 Name:          tcl
 Version:       8.6.10
-Release:       4
+Release:       5
 Epoch:         1
 Summary:       The Tool Command Language implementation
 License:       BSD
@@ -58,7 +58,11 @@ The development files for tcl.
 cd unix
 autoconf
 %configure --enable-threads --enable-symbols --enable-shared --enable-dtrace
+%ifnarch loongarch64
 %make_build CFLAGS="%{optflags}" TCL_LIBRARY=%{_datadir}/%{name}%{MAJOR}
+%else
+%make_build CFLAGS="-Wl,--whole-archive -lpthread -Wl,--no-whole-archive" TCL_LIBRARY=%{_datadir}/%{name}%{MAJOR}
+%endif
 
 %install
 cd unix
@@ -87,11 +91,9 @@ done
 sed -i -e "s|$PWD/unix|%{_libdir}|; s|$PWD|%{_includedir}/%{name}-private|" %{buildroot}/%{_libdir}/%{name}Config.sh
 rm -rf %{buildroot}/%{_datadir}/%{name}%{MAJOR}/ldAix
 
-%ifnarch loongarch64
 %check
 cd unix
 make test
-%endif
 
 %pre
 
@@ -129,6 +131,9 @@ make test
 %{_mandir}/mann/*
 
 %changelog
+* Wed May 25 2022 Peng Fan <fanpeng@loongson.cn> - 1:86.10-5
+- add build flags for weak symbols on loongarch64
+
 * Wed Apr 27 2022 liyanan <liyanan32@h-partners.com> - 1:8.6.10-4
 - Disable test cases in loongarch64  branch