Yocto 2.3

Move OpenBMC to Yocto 2.3(pyro).

Tested: Built and verified Witherspoon and Palmetto images
Change-Id: I50744030e771f4850afc2a93a10d3507e76d36bc
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Resolves: openbmc/openbmc#2461
diff --git a/import-layers/meta-openembedded/meta-oe/recipes-support/libsdl-ttf/libsdl-ttf_2.0.11.bb b/import-layers/meta-openembedded/meta-oe/recipes-support/libsdl-ttf/libsdl-ttf_2.0.11.bb
index 0249abe..d8b378f 100644
--- a/import-layers/meta-openembedded/meta-oe/recipes-support/libsdl-ttf/libsdl-ttf_2.0.11.bb
+++ b/import-layers/meta-openembedded/meta-oe/recipes-support/libsdl-ttf/libsdl-ttf_2.0.11.bb
@@ -12,7 +12,9 @@
 
 S = "${WORKDIR}/SDL_ttf-${PV}"
 
-inherit autotools
+inherit autotools pkgconfig
+
+LDFLAGS += "-lm"
 
 do_configure_prepend() {
     # make autoreconf happy