temporarily fix building for riscv

Signed-off-by: iGxnon <igxnon@gmail.com>
(cherry picked from commit 2a25b4ae0fd8527354002eed5103b271b6867f61)

alertmanager.spec

@@ -2,7 +2,7 @@
 
 Name:    alertmanager
 Version: 0.26.0
-Release: 1
+Release: 2
 Summary: Prometheus Alertmanager.
 License: Apache-2.0
 URL:     https://github.com/prometheus/%{name}
@@ -37,7 +37,11 @@ tar -xzvf %{SOURCE4}
 mkdir -p  $(go env GOPATH)/bin/
 cp -n $(which promu) $(go env GOPATH)/bin/
 
-export GOFLAGS="-mod=vendor -buildmode=pie"
+export GOFLAGS="-mod=vendor -buildmode=pie
+%ifarch riscv64
+-gcflags=all=-d=wrapglobalmapctl=1
+%endif
+"
 make build
 
 %install
@@ -75,6 +79,11 @@ exit 0
 %dir %attr(755, prometheus, prometheus)%{_sharedstatedir}/prometheus
 
 %changelog
+* Sat Mar 23 2024 Wenhui Tang <wenhui.oerv@isrc.iscas.ac.cn> - 0.26.0-2
+- Append flags to GOFLAGS to fix go linker bugs for riscv
+- Related issue: https://github.com/golang/go/issues/62465
+- This is a temporary solution that requires fixing the upstream riscv support for golang.
+
 * Tue Sep 5 2023 Zhengxin Guo <guozhengxin@kylinos.cn> - 0.26.0-1
 - update to 0.26.0 to fix CVE-2023-40577