buildroot/package/boost/0002-fix-uclibc-eventfd.patch
Jörg Krause 12ec0cd9af package/boost: bump to version 1.59.0
Also:
* remove patch "gcc.jam compiler options fix" - merged upstream
* renumber patch "fix uclibc eventfd".

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Reviewed-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Tested-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-12-12 13:53:09 +01:00

39 lines
1.5 KiB
Diff

Use eventfd() function with uClibc
The Boost eventfd code either directly makes the eventfd system call
using __NR_eventfd (when __GLIBC_MINOR is less than 8), or otherwise
uses the eventfd() function provided by the C library.
However, since uClibc pretends to be glibc 2.2, the Boost eventfd code
directly uses the system call. While it works fine on most
architectures, it doesn't on ARC since __NR_eventfd is not defined on
this architecture. However, eventfd() is properly implemented.
So, this patch adjusts the logic used by Boost to consider uClibc as a
C library providing the eventfd() function.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Index: b/boost/asio/detail/impl/eventfd_select_interrupter.ipp
===================================================================
--- a/boost/asio/detail/impl/eventfd_select_interrupter.ipp
+++ b/boost/asio/detail/impl/eventfd_select_interrupter.ipp
@@ -23,7 +23,7 @@
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
-#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
+#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 && !defined(__UCLIBC__)
# include <asm/unistd.h>
#else // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
# include <sys/eventfd.h>
@@ -46,7 +46,7 @@
void eventfd_select_interrupter::open_descriptors()
{
-#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
+#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 && !defined(__UCLIBC__)
write_descriptor_ = read_descriptor_ = syscall(__NR_eventfd, 0);
if (read_descriptor_ != -1)
{