********************************************************************************
conan install liburing/2.1@ --build=liburing --profile=/home/conan/w/BuildSingleReference/42469/30d4e217-2683-41ba-8b61-382b992c0cd6/profile.txt
********************************************************************************
Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=7
os=Linux
os_build=Linux
[options]
liburing:shared=False
[build_requires]
[env]

liburing/2.1: Forced build from source
Installing package: liburing/2.1
Requirements
    liburing/2.1 from local cache - Cache
    linux-headers-generic/5.13.9 from 'conan-center' - Cache
Packages
    liburing/2.1:47d89afdc312224d183cdb232242fc184381c0fb - Build
    linux-headers-generic/5.13.9:c0519e2d9702ec12d057bb15adb7a02baaf18107 - Cache

Installing (downloading, building) binaries...
linux-headers-generic/5.13.9: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
liburing/2.1: Copying sources to build folder
liburing/2.1: Building your package in /home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/build/47d89afdc312224d183cdb232242fc184381c0fb
liburing/2.1: Generator txt created conanbuildinfo.txt
liburing/2.1: Aggregating env generators
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK. 'fPIC' option found and apparently well managed
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK
liburing/2.1: Calling build()
liburing/2.1: Calling:
 > ./configure '--prefix=/home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/package/47d89afdc312224d183cdb232242fc184381c0fb' '--libdir=${prefix}/lib' '--includedir=${prefix}/include' 

----Running------
> ./configure '--prefix=/home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/package/47d89afdc312224d183cdb232242fc184381c0fb' '--libdir=${prefix}/lib' '--includedir=${prefix}/include' 
-----------------
prefix                        /home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/package/47d89afdc312224d183cdb232242fc184381c0fb
includedir                    ${prefix}/include
libdir                        ${prefix}/lib
libdevdir                     /home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/package/47d89afdc312224d183cdb232242fc184381c0fb/lib
relativelibdir                ${prefix}/lib/
mandir                        /home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/package/47d89afdc312224d183cdb232242fc184381c0fb/man
datadir                       /home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/package/47d89afdc312224d183cdb232242fc184381c0fb/share
stringop_overflow             yes
array_bounds                  yes
__kernel_rwf_t                no
__kernel_timespec             no
open_how                      no
statx                         yes
C++                           yes
has_ucontext                  yes
CC                            /usr/bin/gcc
CXX                           /usr/bin/g++

----Running------
> make -j3
-----------------
make[1]: Entering directory '/home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/build/47d89afdc312224d183cdb232242fc184381c0fb/source_subfolder/src'
     CC setup.ol
     CC queue.ol
     CC syscall.ol
     CC register.ol
     CC setup.os
     CC queue.os
     CC syscall.os
     CC register.os
     AR liburing.a
 RANLIB liburing.a
     CC liburing.so.2.1.0
make[1]: Leaving directory '/home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/build/47d89afdc312224d183cdb232242fc184381c0fb/source_subfolder/src'
make[1]: Entering directory '/home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/build/47d89afdc312224d183cdb232242fc184381c0fb/source_subfolder/test'
     CC helpers.o
     CC 232c93d07b74-test
     CC 35fa71a030ca-test
     CC 500f9fbadef8-test
     CC 7ad0e4b2f83c-test
     CC 8a9973408177-test
     CC 917257daa0fe-test
     CC a0908ae19763-test
     CC a4c0b3decb33-test
     CC accept
     CC accept-link
Makefile:162: recipe for target 'a4c0b3decb33-test' failed
Makefile:162: recipe for target 'accept' failed
Makefile:162: recipe for target 'accept-link' failed
Makefile:12: recipe for target 'all' failed
liburing/2.1: 
Received SIGTERM!
In file included from include/liburing/io_uring.h:11:0,
                 from syscall.c:11:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from syscall.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from include/liburing/io_uring.h:11:0,
                 from syscall.c:11:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from syscall.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from include/liburing/io_uring.h:11:0,
                 from syscall.c:11:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from syscall.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from include/liburing/io_uring.h:11:0,
                 from syscall.c:11:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from syscall.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
In file included from include/liburing/io_uring.h:11:0,
                 from syscall.c:11:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from syscall.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from include/liburing/io_uring.h:11:0,
                 from syscall.c:11:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from syscall.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from include/liburing/io_uring.h:11:0,
                 from syscall.c:11:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from syscall.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from include/liburing/io_uring.h:11:0,
                 from syscall.c:11:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from syscall.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
ar: creating liburing.a
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from helpers.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from helpers.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from helpers.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from helpers.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from helpers.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from helpers.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from helpers.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from helpers.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
helpers.c: In function ‘t_posix_memalign’:
helpers.c:32:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
  int ret;
      ^~~
helpers.c: In function ‘t_create_file’:
helpers.c:54:10: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
  ssize_t ret;
          ^~~
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 35fa71a030ca-test.c:27:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 35fa71a030ca-test.c:27:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 35fa71a030ca-test.c:27:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 35fa71a030ca-test.c:27:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 35fa71a030ca-test.c:27:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 35fa71a030ca-test.c:27:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 35fa71a030ca-test.c:27:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 35fa71a030ca-test.c:27:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from 500f9fbadef8-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from 500f9fbadef8-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from 500f9fbadef8-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from 500f9fbadef8-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from 500f9fbadef8-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from 500f9fbadef8-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from 500f9fbadef8-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from 500f9fbadef8-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 232c93d07b74-test.c:23:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 232c93d07b74-test.c:23:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 232c93d07b74-test.c:23:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 232c93d07b74-test.c:23:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 232c93d07b74-test.c:23:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 232c93d07b74-test.c:23:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 232c93d07b74-test.c:23:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 232c93d07b74-test.c:23:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
232c93d07b74-test.c: In function ‘rcv’:
232c93d07b74-test.c:63:6: warning: variable ‘res’ set but not used [-Wunused-but-set-variable]
  int res;
      ^~~
232c93d07b74-test.c: In function ‘snd’:
232c93d07b74-test.c:179:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
  int ret;
      ^~~
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 7ad0e4b2f83c-test.c:5:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 7ad0e4b2f83c-test.c:5:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 7ad0e4b2f83c-test.c:5:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 7ad0e4b2f83c-test.c:5:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 7ad0e4b2f83c-test.c:5:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 7ad0e4b2f83c-test.c:5:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 7ad0e4b2f83c-test.c:5:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 7ad0e4b2f83c-test.c:5:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 8a9973408177-test.c:9:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 8a9973408177-test.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 8a9973408177-test.c:9:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 8a9973408177-test.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 8a9973408177-test.c:9:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 8a9973408177-test.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 8a9973408177-test.c:9:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 8a9973408177-test.c:9:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 917257daa0fe-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 917257daa0fe-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 917257daa0fe-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 917257daa0fe-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 917257daa0fe-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 917257daa0fe-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from 917257daa0fe-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from 917257daa0fe-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from a0908ae19763-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from a0908ae19763-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from a0908ae19763-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from a0908ae19763-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from a0908ae19763-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from a0908ae19763-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from a0908ae19763-test.c:13:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from a0908ae19763-test.c:13:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from a4c0b3decb33-test.c:23:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from a4c0b3decb33-test.c:23:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from a4c0b3decb33-test.c:23:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from a4c0b3decb33-test.c:23:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from a4c0b3decb33-test.c:23:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from a4c0b3decb33-test.c:23:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from a4c0b3decb33-test.c:23:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from a4c0b3decb33-test.c:23:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
gcc: internal compiler error: Terminated (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
make[1]: *** [a4c0b3decb33-test] Error 4
make[1]: *** Waiting for unfinished jobs....
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from accept.c:21:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from accept.c:21:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from accept.c:21:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from accept.c:21:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from accept.c:21:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from accept.c:21:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from helpers.h:12,
                 from accept.c:21:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from helpers.h:12,
                 from accept.c:21:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
accept.c: In function ‘start_accept_listen’:
accept.c:94:10: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
  int fd, ret;
          ^~~
accept.c: In function ‘test’:
accept.c:126:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
  int ret, p_fd[2], done = 0;
      ^~~
accept.c: In function ‘test_accept_pending_on_exit’:
accept.c:219:10: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
  int fd, ret;
          ^~~
gcc: internal compiler error: Terminated (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
make[1]: *** [accept] Error 4
make[1]: *** [accept-link] Terminated
make: *** [all] Terminated
linux-headers-generic/5.13.9: WARN: Lib folder doesn't exist, can't collect libraries: /home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/lib
liburing/2.1: WARN: Build folder is dirty, removing it: /home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/build/47d89afdc312224d183cdb232242fc184381c0fb
liburing/2.1: ERROR: Package '47d89afdc312224d183cdb232242fc184381c0fb' build failed
liburing/2.1: WARN: Build folder /home/conan/w/BuildSingleReference/.conan/data/liburing/2.1/_/_/build/47d89afdc312224d183cdb232242fc184381c0fb
ERROR: Exiting with code: 5
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from accept-link.c:15:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:285:0: warning: "RWF_HIPRI" redefined
 #define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from accept-link.c:15:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:46:0: note: this is the location of the previous definition
 #define RWF_HIPRI 0x00000001 /* High priority request.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from accept-link.c:15:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:288:0: warning: "RWF_DSYNC" redefined
 #define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from accept-link.c:15:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:47:0: note: this is the location of the previous definition
 #define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from accept-link.c:15:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:291:0: warning: "RWF_SYNC" redefined
 #define RWF_SYNC ((__kernel_rwf_t)0x00000004)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from accept-link.c:15:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:48:0: note: this is the location of the previous definition
 #define RWF_SYNC 0x00000004 /* per-IO O_SYNC.  */
 
In file included from ../src/include/liburing/io_uring.h:11:0,
                 from ../src/include/liburing.h:20,
                 from accept-link.c:15:
/home/conan/w/BuildSingleReference/.conan/data/linux-headers-generic/5.13.9/_/_/package/c0519e2d9702ec12d057bb15adb7a02baaf18107/include/linux/fs.h:294:0: warning: "RWF_NOWAIT" redefined
 #define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
 
In file included from /usr/include/x86_64-linux-gnu/sys/uio.h:168:0,
                 from ../src/include/liburing.h:10,
                 from accept-link.c:15:
/usr/include/x86_64-linux-gnu/bits/uio-ext.h:49:0: note: this is the location of the previous definition
 #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode.  */
 
accept-link.c: In function ‘send_thread’:
accept-link.c:52:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
  int ret;
      ^~~
accept-link.c: In function ‘recv_thread’:
accept-link.c:81:9: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
  int i, ret;
         ^~~