[Buildroot] [PATCH 2/2] package/iproute2: fix build failure due to missing BR2_PACKAGE_LIBTIRPC_RPCDB

[Yegor Yefremov via buildroot <buildroot@buildroot.org>]

From: Yegor Yefremov <yegorslists@googlemail.com>

iproute2's configure script enables HAVE_RPC as soon as libtirpc is
found, and misc/ss.c then calls getrpcbynumber() from its RPC service
resolver. Since the bump of libtirpc to version 1.3.7 in Buildroot
commit 3f3d6e43de9b4aac7df8545fd811171256f878d3, which includes upstream
commit:
https://git.linux-nfs.org/?p=steved/libtirpc.git;a=commit;h=7cea8ad66aecc21e6caae330b5d31075af399193
that symbol is only exported when libtirpc is configured with
--enable-rpcdb. On non-glibc toolchains there is no libc fallback
either, so linking ss fails:

  ld: ss.o: in function `init_service_resolver':
  ss.c:(.text+0x2558): undefined reference to `getrpcbynumber'

Select BR2_PACKAGE_LIBTIRPC_RPCDB when libtirpc is enabled, like lsof
and other users of these functions already do.

Fixes:
https://autobuild.buildroot.org/results/390b7ed00da20c2349fe069ade4a65404834a484/

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Assisted-by: Claude:claude-opus-5
---
 package/iproute2/Config.in | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/iproute2/Config.in b/package/iproute2/Config.in
index ab9e515eca..106a0aaf2c 100644
--- a/package/iproute2/Config.in
+++ b/package/iproute2/Config.in
@@ -2,6 +2,7 @@ config BR2_PACKAGE_IPROUTE2
 	bool "iproute2"
 	depends on BR2_USE_MMU # fork()
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4 # __kernel_{u,}long_t
+	select BR2_PACKAGE_LIBTIRPC_RPCDB if BR2_PACKAGE_LIBTIRPC
 	help
 	  Kernel routing and traffic control utilities. Provides things
 	  like ip and tc.
-- 
2.34.1

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