Hi Fabrice, > getrandom and sys/random.h are only available since glibc 2.25: > https://www.gnu.org/software/gnulib/manual/html_node/sys_002frandom_002eh.html > resulting in the following build failures since version 5.63 and > https://git.kernel.org/pub/scm/bluetooth/bluez.git/log/?qt=grep&q=getrandom > so put back rand() as a fallback: > > plugins/autopair.c:20:24: fatal error: sys/random.h: No such file or directory > #include <sys/random.h> > ^ > > Fixes: > - http://autobuild.buildroot.org/results/6b8870d12e0804d6154230a7322c49416c1dc0e2 > > Signed-off-by: Fabrice Fontaine <fontaine.fabrice@xxxxxxxxx> > --- > configure.ac | 2 ++ > emulator/le.c | 7 +++++++ > emulator/phy.c | 7 +++++++ > peripheral/main.c | 10 ++++++++++ > plugins/autopair.c | 6 ++++++ > profiles/health/hdp.c | 11 +++++++++++ > profiles/health/mcap.c | 10 ++++++++++ > tools/btgatt-server.c | 6 ++++++ > 8 files changed, 59 insertions(+) > > diff --git a/configure.ac b/configure.ac > index 07d068a4d..cdd693da3 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -54,6 +54,8 @@ AC_ARG_ENABLE(threads, AS_HELP_STRING([--enable-threads], > > AC_CHECK_FUNCS(explicit_bzero) > > +AC_CHECK_FUNCS(getrandom) > + > AC_CHECK_FUNCS(rawmemchr) > > AC_CHECK_FUNC(signalfd, dummy=yes, > diff --git a/emulator/le.c b/emulator/le.c > index f8f313f2c..9ef0636d0 100644 > --- a/emulator/le.c > +++ b/emulator/le.c > @@ -20,7 +20,9 @@ > #include <sys/socket.h> > #include <sys/un.h> > #include <sys/uio.h> > +#ifdef HAVE_GETRANDOM > #include <sys/random.h> > +#endif > #include <time.h> > > #include "lib/bluetooth.h" > @@ -509,10 +511,15 @@ static unsigned int get_adv_delay(void) > /* The advertising delay is a pseudo-random value with a range > * of 0 ms to 10 ms generated for each advertising event. > */ > +#ifdef HAVE_GETRANDOM > if (getrandom(&val, sizeof(val), 0) < 0) { > /* If it fails to get the random number, use a static value */ > val = 5; > } > +#else > + srand(time(NULL)); > + val = rand(); > +#endif you need to introduce a src/missing.h and provide a getrandom fallback. I am not allowing to spread #ifdef around the code for some old glibc compatibility. Regards Marcel
