Re: Build 0.6 version fail on musl libc

["Milan P. Stanić" <mps@arvanta.net>]

On Wed, 2020-04-29 at 13:38, Jens Axboe wrote:
> On 4/29/20 1:33 PM, Milan P. Stanić wrote:
> > On Wed, 2020-04-29 at 10:14, Jens Axboe wrote:
> >> On 4/29/20 9:29 AM, Jens Axboe wrote:
> >>> On 4/29/20 9:26 AM, Christoph Hellwig wrote:
> >>>> On Wed, Apr 29, 2020 at 09:24:40AM -0600, Jens Axboe wrote:
> >>>>>
> >>>>> Not sure what the best fix is there, for 32-bit, your change will truncate
> >>>>> the offset to 32-bit as off_t is only 4 bytes there. At least that's the
> >>>>> case for me, maybe musl is different if it just has a nasty define for
> >>>>> them.
> >>>>>
> >>>>> Maybe best to just make them uint64_t or something like that.
> >>>>
> >>>> The proper LFS type would be off64_t.
> >>>
> >>> Is it available anywhere? Because I don't have it.
> >>
> >> There seems to be better luck with __off64_t, but I don't even know
> >> how widespread that is... Going to give it a go, we'll see.
> > 
> > AFAIK, __off64_t is glibc specific, defined in /usr/include/fcntl.h:
> > ------
> > # ifndef __USE_FILE_OFFSET64
> > typedef __off_t off_t;
> > # else
> > typedef __off64_t off_t;
> > # endif
> > ------
> > 
> > So, this will not work on musl based Linux system, git commit id
> > b5096098c62adb19dbf4a39b480909766c9026e7 should be reverted. But you
> > know better what to do.
> > 
> > I come with another quick and dirty patch attached to this mail but
> > again  I think it is not proper solution, just playing to find (maybe)
> > 'good enough' workaround.
> 
> Let's just use uint64_t.

This works. Thanks.

Next issue is this:
----
make[1]: Entering directory '/work/devel/liburing/src'
     CC setup.ol
     CC queue.ol
     CC syscall.ol
In file included from syscall.c:9:
include/liburing/compat.h:6:2: error: unknown type name 'int64_t'
    6 |  int64_t  tv_sec;
      |  ^~~~~~~
make[1]: *** [Makefile:43: syscall.ol] Error 1
make[1]: Leaving directory '/work/devel/liburing/src'
make: *** [Makefile:12: all] Error 2
----

I fixed it with this patch:
--
diff --git a/configure b/configure
index 30b0a5a..4b44177 100755
--- a/configure
+++ b/configure
@@ -301,6 +301,7 @@ EOF
 fi
 if test "$__kernel_timespec" != "yes"; then
 cat >> $compat_h << EOF
+#include <stdint.h>
 struct __kernel_timespec {
  int64_t   tv_sec;
  long long tv_nsec;
--

but not sure will that work on glibc.

-- 
regards