Changeset c39ddc6 for multimedia/libdriv/v4l-utils.xml

Timestamp:

12/03/2023 05:56:37 AM (5 months ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

12.1, ken/TL2024, lazarus, plabs/newcss, python3.11, rahul/power-profiles-daemon, renodr/vulkan-addition, trunk, xry111/llvm18

Children:

4614dc1

Parents:

528007c

Message:

llvm: Remove BPF from targets

To use clang with BPF for v4l-utils, libbpf must be installed but it's
not a BLFS package. And I doubt if any BLFS user really uses an IR
remote control on the BLFS system. So let's not make all BLFS users
build something useless.

Note that if both clang and libbpf both exist, v4l-utils will attempt to
use "clang -target bpf" anyway even if -Dbpf=disabled is explicitly
specified (we've got enough surprise from v4l-utils building system
these days!!), so add a note to v4l-utils for people installing non-BLFS
libbpf.

File:

• multimedia/libdriv/v4l-utils.xml (modified) (1 diff)

multimedia/libdriv/v4l-utils.xml

@@ -101 +101 @@
   <sect2 role="installation">
     <title>Installation of v4l-utils</title>
+
+    <note>
+      <para>
+        If you've installed both LLVM and libbpf (not in BLFS), either
+        enable the BPF target (via
+        <option>-DLLVM_TARGETS_TO_BUILD=</option>) building LLVM, or disable
+        the infrared remote control decoders based on BPF:
+      </para>
+
+      <!-- not "nodump" because it's harmless for BLFS anyway -->
+      <screen><userinput>sed '/^ir_bpf_enabled/s/=.*/= false/' \
+    -i utils/keytable/meson.build</userinput></screen>
+    </note>
 
     <para>