Hi,
I've come over from https://github.com/strace/strace/issues/177
there's a bit of context there.
Crosstool-ng has hit a problem when building a recent enough version
of strace in a configuration that uses musl libc.
The error is
[ALL ] In file included from
/home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/bundled/linux/include/uapi/linux/in6.h:26,
[ALL ] from
/home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/bundled/linux/include/uapi/linux/if_bridge.h:19,
[ALL ] from
/home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/src/rtnl_mdb.c:16:
[ERROR] /home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/bundled/linux/include/uapi/linux/libc-compat.h:109:
error: "__UAPI_DEF_IN6_ADDR_ALT" redefined [-Werror]
[ALL ] 109 | #define __UAPI_DEF_IN6_ADDR_ALT 1
[ALL ] |
[ALL ] In file included from
/home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/src/rtnl_mdb.c:15:
[ALL ] /home/x-tool/x-tools/arm-unknown-linux-musleabi/arm-unknown-linux-musleabi/sysroot/usr/include/netinet/in.h:401:
note: this is the location of the previous definition
[ALL ] 401 | #define __UAPI_DEF_IN6_ADDR_ALT 0
[ALL ] |
[ALL ] cc1: all warnings being treated as errors
[ERROR] make[4]: *** [Makefile:6660: libstrace_a-rtnl_mdb.o] Error 1
[ALL ] make[4]: Leaving directory
'/home/x-tool/.build/arm-unknown-linux-musleabi/build/build-strace/src'
[ERROR] make[3]: *** [Makefile:2404: all] Error 2
[ALL ] rm ioctlsort0.o ioctls_all0.h ioctlsort0
[ALL ] make[3]: Leaving directory
'/home/x-tool/.build/arm-unknown-linux-musleabi/build/build-strace/src'
[ERROR] make[2]: *** [Makefile:601: all-recursive] Error 1
[ALL ] make[2]: Leaving directory
'/home/x-tool/.build/arm-unknown-linux-musleabi/build/build-strace'
[ERROR] make[1]: *** [Makefile:506: all] Error 2
[ALL ] make[1]: Leaving directory
'/home/x-tool/.build/arm-unknown-linux-musleabi/build/build-strace'
It appears that the bundled uapi headers definition of
__UAPI_DEF_IN6_ADDR_ALT conflicts with the musl libc definition. It
looks like libc-compat.h tries to co-exists with GNU libc but this
isn't working for musl. I've identified an egregious hack that I think
should make things work (CFLAGS+=-D__USE_MISC) but I wanted to know if
there was a nicer way to make this work.
Regards,
Chris
Hi,
On Tue, Mar 30, 2021 at 12:30:52PM +1300, Chris Packham wrote:
> Hi,
>
> I've come over from https://github.com/strace/strace/issues/177
> there's a bit of context there.
>
> Crosstool-ng has hit a problem when building a recent enough version
> of strace in a configuration that uses musl libc.
>
> The error is
>
> [ALL ] In file included from
> /home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/bundled/linux/include/uapi/linux/in6.h:26,
> [ALL ] from
> /home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/bundled/linux/include/uapi/linux/if_bridge.h:19,
> [ALL ] from
> /home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/src/rtnl_mdb.c:16:
> [ERROR] /home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/bundled/linux/include/uapi/linux/libc-compat.h:109:
> error: "__UAPI_DEF_IN6_ADDR_ALT" redefined [-Werror]
> [ALL ] 109 | #define __UAPI_DEF_IN6_ADDR_ALT 1
> [ALL ] |
> [ALL ] In file included from
> /home/x-tool/.build/arm-unknown-linux-musleabi/src/strace/src/rtnl_mdb.c:15:
> [ALL ] /home/x-tool/x-tools/arm-unknown-linux-musleabi/arm-unknown-linux-musleabi/sysroot/usr/include/netinet/in.h:401:
> note: this is the location of the previous definition
> [ALL ] 401 | #define __UAPI_DEF_IN6_ADDR_ALT 0
> [ALL ] |
> [ALL ] cc1: all warnings being treated as errors
> [ERROR] make[4]: *** [Makefile:6660: libstrace_a-rtnl_mdb.o] Error 1
> [ALL ] make[4]: Leaving directory
> '/home/x-tool/.build/arm-unknown-linux-musleabi/build/build-strace/src'
> [ERROR] make[3]: *** [Makefile:2404: all] Error 2
> [ALL ] rm ioctlsort0.o ioctls_all0.h ioctlsort0
> [ALL ] make[3]: Leaving directory
> '/home/x-tool/.build/arm-unknown-linux-musleabi/build/build-strace/src'
> [ERROR] make[2]: *** [Makefile:601: all-recursive] Error 1
> [ALL ] make[2]: Leaving directory
> '/home/x-tool/.build/arm-unknown-linux-musleabi/build/build-strace'
> [ERROR] make[1]: *** [Makefile:506: all] Error 2
> [ALL ] make[1]: Leaving directory
> '/home/x-tool/.build/arm-unknown-linux-musleabi/build/build-strace'
>
> It appears that the bundled uapi headers definition of
> __UAPI_DEF_IN6_ADDR_ALT conflicts with the musl libc definition. It
> looks like libc-compat.h tries to co-exists with GNU libc but this
> isn't working for musl.
This essentially means that such basic things as
#include <netinet/in.h>
#include <linux/in6.h>
are broken in your setup.
--
ldv