| From: Khem Raj <raj.khem@gmail.com> |
| Date: Tue, 24 Jun 2026 00:00:00 +0000 |
| Subject: [PATCH] libdnet: fix PF_PACKET conftest nested function |
| |
| The bundled libdnet-stripped AC_DNET_LINUX_PF_PACKET check used |
| "int foo() { return ETH_P_ALL; }" as the AC_TRY_COMPILE body, which the |
| generated configure places inside main(). clang rejects nested function |
| definitions ("function definition is not allowed here"), so the check |
| fails and configure aborts with "Ethernet support not found". Use a plain |
| expression statement that still references ETH_P_ALL. Patch both the macro |
| source and the shipped configure. |
| |
| Upstream-Status: Pending |
| |
| Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| --- |
| --- a/libdnet-stripped/m4/acinclude.m4 |
| +++ b/libdnet-stripped/m4/acinclude.m4 |
| @@ -149,7 +149,7 @@ |
| [AC_MSG_CHECKING(for Linux PF_PACKET sockets) |
| AC_TRY_COMPILE([#include <netpacket/packet.h> |
| #include <linux/if_ether.h>], |
| - [int foo() { return ETH_P_ALL; }], |
| + [(void) ETH_P_ALL;], |
| ac_cv_dnet_linux_pf_packet=yes, |
| ac_cv_dnet_linux_pf_packet=no) |
| AC_MSG_RESULT($ac_cv_dnet_linux_pf_packet) |
| --- a/libdnet-stripped/configure |
| +++ b/libdnet-stripped/configure |
| @@ -15219,7 +15219,7 @@ |
| int |
| main (void) |
| { |
| -int foo() { return ETH_P_ALL; } |
| +(void) ETH_P_ALL; |
| ; |
| return 0; |
| } |
