Hi Francesco, On Mon, Feb 20, 2017 at 12:33:14PM +0100, Francesco wrote: > This is my fist attempt to send a patch for v4l-utils project. > I maintain v4l-utils package for Alpine Linux (www.alpinelinux.org), a > musl-based distro. > > This patch allows the build for v4l-utils by allowing alternatives to GLIBC > assumptions. > > Thanks for considering. > From 71f399cb1399c35ff4ce165c2cec0fcd3256d34e Mon Sep 17 00:00:00 2001 > From: Francesco Colista <fcolista@xxxxxxxxxxxxx> > Date: Mon, 20 Feb 2017 10:16:01 +0100 > Subject: [PATCH] utils/ir-ctl/ir-ctl.c: fix build with musl library > > This patch allows to build correctly v4l-utils on musl-based distributions. > It provides alternative to glibc assumptions. > --- > utils/ir-ctl/ir-ctl.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/utils/ir-ctl/ir-ctl.c b/utils/ir-ctl/ir-ctl.c > index bc58cee0..0bd0ddcc 100644 > --- a/utils/ir-ctl/ir-ctl.c > +++ b/utils/ir-ctl/ir-ctl.c > @@ -42,6 +42,20 @@ > # define _(string) string > #endif > > +#if !defined(__GLIBC__) This might break other libc implementations. Instead, do #ifndef TEMP_FAILURE_RETRY See https://git.busybox.net/buildroot/tree/package/libv4l/0002-ir-ctl-fixes-for-musl-compile.patch > + > +/* Evaluate EXPRESSION, and repeat as long as it returns -1 with `errno' > + set to EINTR. */ > + > +# define TEMP_FAILURE_RETRY(expression) \ > + (__extension__ \ > + ({ long int __result; \ > + do __result = (long int) (expression); \ > + while (__result == -1L && errno == EINTR); \ > + __result; })) > + > +#endif > + > # define N_(string) string baruch -- http://baruch.siach.name/blog/ ~. .~ Tk Open Systems =}------------------------------------------------ooO--U--Ooo------------{= - baruch@xxxxxxxxxx - tel: +972.52.368.4656, http://www.tkos.co.il -
