With glibc versions before 2.17, we get following build error:
canfdtest.o: In function `millisleep':
canfdtest.c:(.text+0x212): undefined reference to `clock_nanosleep'
collect2: error: ld returned 1 exit status
make[1]: *** [canfdtest] Error 1
make[1]: *** Waiting for unfinished jobs....
glibc versions before 2.17 needs to link with -lrt for
clock_nanosleep(). This patch adds support to detect if linking with
librt is required.
This build issue is detected by Buildroot autobuilder:
http://autobuild.buildroot.net/results/0e5/0e5242376ff6aa82e89ed1172350e05009d48156/build-end.log
Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
