https://aur.archlinux.org/packages/qt5-webengine#comment-1059464

magks commented on 2026-02-13 23:52 (UTC) (edited on 2026-02-14 00:11 (UTC) by magks)
Build fails on glibc 2.43+ with SYS_SECCOMP error

System: Arch Linux with glibc 2.43+r5+g856c426a7534-1

Error: error: expected identifier before numeric constant 224 | #define SYS_SECCOMP 1

Root cause: glibc 2.41+ added SYS_SECCOMP as an enum value in signal.h, conflicting with Chromium's internal definition.

Fix: Apply this patch to undefine the conflicting macro:

glibc-2.41-seccomp-fix.patch:

https://dpaste.com/DCK85GQAB.txt

%diff -pNaru5 a/chromium/sandbox/linux/system_headers/linux_seccomp.h b/chromium/sandbox/linux/system_headers/linux_seccomp.h
%--- a/chromium/sandbox/linux/system_headers/linux_seccomp.h	2025-04-23 12:00:55.000000000 -0400
%+++ b/chromium/sandbox/linux/system_headers/linux_seccomp.h	2026-02-15 06:45:57.729996411 -0500
%@@ -221,7 +221,11 @@ struct seccomp_notif_addfd {
% #endif
% 
% #ifndef SYS_SECCOMP
% #define SYS_SECCOMP                   1
% #endif
%-
%+// Undefine SYS_SECCOMP to avoid conflicts with glibc 2.41+ which
%+// defines it as an enum value in signal.h
%+#ifdef SYS_SECCOMP
%+#undef SYS_SECCOMP
%+#endif
% #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_LINUX_SECCOMP_H_

***

Using the above patch would make it not compile on glibc<2.43 leading to
compile complaints for those who haven't upgraded.

/usr/include/bits/siginfo-consts.h
%enum
%{
%  SYS_SECCOMP = 1, /* Seccomp triggered.  */
%#  define SYS_SECCOMP SYS_SECCOMP

glibc 2.42 didn't have SYS_SECCOMP anywhere. glib 2.43 has it as both an
enum and a define. Add signal.h for the sources that don't already include it.

diff -pNaru5 a/chromium/sandbox/linux/system_headers/linux_seccomp.h b/chromium/sandbox/linux/system_headers/linux_seccomp.h
--- a/chromium/sandbox/linux/system_headers/linux_seccomp.h	2025-04-23 12:00:55.000000000 -0400
+++ b/chromium/sandbox/linux/system_headers/linux_seccomp.h	2026-02-15 06:51:02.126144699 -0500
@@ -4,10 +4,11 @@
 
 #ifndef SANDBOX_LINUX_SYSTEM_HEADERS_LINUX_SECCOMP_H_
 #define SANDBOX_LINUX_SYSTEM_HEADERS_LINUX_SECCOMP_H_
 
 #include <stdint.h>
+#include <signal.h>
 
 #include "build/build_config.h"
 
 #if !defined(OS_NACL_NONSFI)
 #include <sys/ioctl.h>