On 3/4/2015 6:24 AM, Thomas Monjalon wrote: >>> Compilation fails in some distributions because of missing unistd.h >>> needed for pread/pwrite (seen with Suse): >>> lib/librte_eal/linuxapp/eal/eal_pci_uio.c:62:2: >>> error: implicit declaration of function ?pread? >>> >>> Fixes: 4a499c649590 ("eal/linux: enable uio_pci_generic support") >>> >>> Signed-off-by: Thomas Monjalon <thomas.monjalon at 6wind.com> >> Acked-by: David Marchand <david.marchand at 6wind.com> > Applied
Hi, Thomas This patch may be need to be reverted, as the error still exists. suse-11-sp3-32:~/dpdk # uname -a Linux suse-11-sp3-32 3.0.76-0.11-pae #1 SMP Fri Jun 14 08:21:43 UTC 2013 (ccab990) i686 i686 i386 GNU/Linux suse-11-sp3-32:~/dpdk # gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/i686-pc-linux-gnu/4.5.1/lto-wrapper Target: i686-pc-linux-gnu Configured with: ./configure Thread model: posix gcc version 4.5.1 (GCC) As I try to check the manual of pread, find that it has two: ---------------------------------------------------------- Man: find all matching manual pages * pread (2) pread (3p) Man: What manual page do you want? Man: ------------------------------------------------------------- PREAD(2) Linux Programmer's Manual PREAD(2) NAME pread, pwrite - read from or write to a file descriptor at a given offset SYNOPSIS #define _XOPEN_SOURCE 500 #include <unistd.h> ssize_t pread(int fd, void *buf, size_t count, off_t offset); ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset); -------------------------------------------------------------------------------------------------------------------------------------------- READ(3P) POSIX Programmer's Manual READ(3P) PROLOG This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME pread, read - read from a file SYNOPSIS #include <unistd.h> ssize_t pread(int fildes, void *buf, size_t nbyte, off_t offset); ssize_t read(int fildes, void *buf, size_t nbyte); DESCRIPTION ------------------------------------------------------------------------------------------------------------------------------------------ While I try to add marco #define _XOPEN_SOURCE 500 Other errors show up Who knows how to solve this issue? Thanks, Michael >