librsvg: disable Bsymbolic if it is not supported on some hosts
When trying to build on my Centos 5.5 machine, got below error:
| checking for gdk-pixbuf-query-loaders... /home/build/clu1/build/qemux86_standard_glibc-std/bitbake_build/tmp/sysroots/x86_64-linux/usr/bin/gdk-pixbuf-query-loaders
| checking if gcc supports "-Wl,-Bsymbolic-functions" flag...
| configure: error: -Bsymbolic requested but not supported by ld. Use --disable-Bsymbolic to disable
| Configure failed. The contents of all config.log files follows to aid debugging
| ERROR: oe_runconf failed
Set --enable-Bsymbolic=auto to disable it when it is not suppported.
Signed-off-by: Chong Lu <Chong.Lu@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
