From f3b6cdadf19269be25645a102fef89baaf289769 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Sat, 30 Nov 2019 12:18:51 -0800 Subject: [PATCH] fix uclibc eventfd 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 [Aduskett@gmail.com: Modified to work with the standalone package.] Signed-off-by: Adam Duskett --- asio/include/asio/detail/impl/eventfd_select_interrupter.ipp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/asio/include/asio/detail/impl/eventfd_select_interrupter.ipp b/asio/include/asio/detail/impl/eventfd_select_interrupter.ipp index 9ff9bc8..04e3477 100644 --- a/asio/include/asio/detail/impl/eventfd_select_interrupter.ipp +++ b/asio/include/asio/detail/impl/eventfd_select_interrupter.ipp @@ -23,7 +23,7 @@ #include #include #include -#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 +#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 && !defined(__UCLIBC__) # include #else // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 # include @@ -45,7 +45,7 @@ eventfd_select_interrupter::eventfd_select_interrupter() 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) { -- 2.23.0