id = 1341
title = "Static build failure with clang (clang 14.0.6)"
state = "closed"
created_at = "2022-11-25T11:15:24.129Z"
closed_at = "2024-03-12T14:25:29.681Z"
labels = ["Build System"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/1341"
host-os = "ArchlinuxARM"
host-arch = "aarch64"
qemu-version = "7.1.0"
guest-os = "n/a"
guest-arch = "n/a"
description = """Static build failure with redefinition of 'iovec'.

The configure looks like this:

```
  export CC=clang
  ../$pkgbase-$pkgver/configure \\
      --prefix=/usr \\
      --sysconfdir=/etc \\
      --libexecdir=/usr/lib/qemu \\
      --enable-attr \\
      --enable-linux-user \\
      --enable-tcg \\
      --disable-bpf \\
      --disable-bsd-user \\
      --disable-capstone \\
      --disable-docs \\
      --disable-fdt \\
      --disable-gcrypt \\
      --disable-glusterfs \\
      --disable-gnutls \\
      --disable-gtk \\
      --disable-install-blobs \\
      --disable-kvm \\
      --disable-libiscsi \\
      --disable-libnfs \\
      --disable-libssh \\
      --disable-linux-io-uring \\
      --disable-nettle \\
      --disable-opengl \\
      --disable-qom-cast-debug \\
      --disable-sdl \\
      --disable-system \\
      --disable-tools \\
      --disable-tpm \\
      --disable-vde \\
      --disable-vhost-crypto \\
      --disable-vhost-kernel \\
      --disable-vhost-net \\
      --disable-vhost-user \\
      --disable-vnc \\
      --disable-werror \\
      --disable-xen \\
      --disable-zstd \\
      --static
```

The compiling failure looks like this:
```
FAILED: libqom.fa.p/qom_object.c.o
clang -Ilibqom.fa.p -I. -I../qemu-7.1.0 -Iqapi -Itrace -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/sysprof-4 -fcolor-diagnostics -Wall -Winvalid-pch -std=gnu11 -O2 -g -isystem /home/adam/qemu-user-static/src/qemu-7.1.0/linux-headers -isystem linux-headers -iquote . -iquote /home/adam/qemu-user-static/src/qemu-7.1.0 -iquote /home/adam/qemu-user-static/src/qemu-7.1.0/include -iquote /home/adam/qemu-user-static/src/qemu-7.1.0/tcg/aarch64 -pthread -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -Wno-missing-braces -march=armv8-a -O2 -pipe -fstack-protector-strong -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fPIE -MD -MQ libqom.fa.p/qom_object.c.o -MF libqom.fa.p/qom_object.c.o.d -o libqom.fa.p/qom_object.c.o -c ../qemu-7.1.0/qom/object.c
distcc[94580] (dcc_build_somewhere) Warning: failed to distribute, running locally instead
clang-14: warning: argument unused during compilation: '-fstack-clash-protection' [-Wunused-command-line-argument]
In file included from ../qemu-7.1.0/qom/object.c:13:
/home/adam/qemu-user-static/src/qemu-7.1.0/include/qemu/osdep.h:517:8: error: redefinition of 'iovec'
struct iovec {
       ^
/usr/include/bits/types/struct_iovec.h:26:8: note: previous definition is here
struct iovec
       ^
In file included from ../qemu-7.1.0/qom/object.c:13:
/home/adam/qemu-user-static/src/qemu-7.1.0/include/qemu/osdep.h:524:9: warning: 'IOV_MAX' macro redefined [-Wmacro-redefined]
#define IOV_MAX 1024
        ^
/usr/include/bits/xopen_lim.h:66:10: note: previous definition is here
# define IOV_MAX __IOV_MAX
         ^
1 warning and 1 error generated.
distcc[94580] ERROR: compile ../qemu-7.1.0/qom/object.c on localhost failed
ninja: build stopped: subcommand failed.
```"""
reproduce = """1. Compile qemu using above configure and use clang as the compiler"""
additional = """Full meson log:
[meson-log.txt](/uploads/a63d609852148140e8fa7210c6912982/meson-log.txt)"""