https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105225
Bug ID: 105225
Summary: build failure with musl libc 1.2.3 due to sysinfo.go
error: redefinition of 'SYS_SECCOMP'
Product: gcc
Version: 11.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: ncopa at alpinelinux dot org
CC: cmang at google dot com
Target Milestone: ---
Building gcc 11.2.1 with musl libc 1.2.3 fails with:
11.2.1_git20220219/libgo/go/syscall/time_nofake.go
/home/ncopa/aports/main/gcc/src/gcc-11.2.1_git20220219/libgo/go/syscall/timestruct.go
libcalls.go sysinfo.go syscall_arch.go syscall_linknames.go epoll.go -fPIC -o
.libs/syscall.o
sysinfo.go:6606:7: error: redefinition of 'SYS_SECCOMP'
6606 | const SYS_SECCOMP = _SYS_SECCOMP
| ^
sysinfo.go:6600:7: note: previous definition of 'SYS_SECCOMP' was here
6600 | const SYS_SECCOMP = _SYS_seccomp
| ^
make[2]: *** [Makefile:3001: syscall.lo] Error 1
The generation of sysinfo.go will try extract syscalls and convert them to
uppercase. It gets duplicated by the uppercase SYS_SECCOMP introduced in with
musl commit:
https://git.musl-libc.org/cgit/musl/commit/?id=3dcbd896907d9d474da811b7c6b769342abaf651
A possible fix is to only grep for syscalls with lowercase letters:
diff --git a/libgo/mksysinfo.sh b/libgo/mksysinfo.sh
index 6fef104..06289a4 100755
--- a/libgo/mksysinfo.sh
+++ b/libgo/mksysinfo.sh
@@ -126,7 +126,7 @@ if ! grep '^const SIGCLD ' ${OUT} >/dev/null 2>&1; then
fi
# The syscall numbers. We force the names to upper case.
-grep '^const _SYS_' gen-sysinfo.go | \
+grep '^const _SYS_[a-z]' gen-sysinfo.go | \
sed -e 's/const _\(SYS_[^= ]*\).*$/\1/' | \
while read sys; do
sup=`echo $sys | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
