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--- openeuler_risc-v-fixing [2024/01/31 06:25] – Add short-circuited segment & fix multiple format misaka00251
+++ openeuler_risc-v-fixing [2024/04/03 03:55] (current) – Add noarch misaka00251
@@ Line 142: / Line 142: @@
 </file>
+===== expand macro =====
+<file spec example.spec>
+%global common_description %{expand:
+This package provides a set of C++ libraries for multimedia streaming, using
+using open standard protocols (RTP/RTCP, RTSP, SIP). These libraries can be
+used  to build streaming applications.
+The libraries can also be used to stream, receive, and process MPEG, H.263+ or
+JPEG video, and several audio codecs. They can easily be extended to support
+additional (audio and/or video) codecs, and can also be used to build basic
+RTSP or SIP clients and servers, and have been used to add streaming support to
+existing media player applications.}
+%description    %{common_description}
+</file>
+===== 碰到 noarch 怎么办 =====
+如果遇到 "%ifarch" 宏不起作用的情况下，可以先看一下 spec 文件内是否有 "BuildArch: noarch" 这一行。
+在包为 noarch 的情况下，"%ifarch" 是不起作用的。你可能需要这样的 dirty hack 才行:
+<file spec example.spec>
+BuildArch: noarch
+%if "%{_arch}" == "riscv64"
+echo "Do Something"
+%endif
+</file>