libupnpp: link against libm under glibc

Fixes compilation.

Signed-off-by: Rosen Penev <redacted>

diff --git a/libs/libupnpp/Makefile b/libs/libupnpp/Makefile
index 7146d8d3be5a71b261ba69f0f0752719f57a338c..7c03953280db90a66e10ecf54c47fdba7a81e4f5 100644 (file)
--- a/libs/libupnpp/Makefile
+++ b/libs/libupnpp/Makefile
@@ -37,6 +37,8 @@ libupnpp defines useful objects over libupnp and can be used to create both devi
 and control points. It is shared by upmpdcli and upplay.
 endef
 
+TARGET_LDFLAGS += $(if $(CONFIG_USE_GLIBC),-lm)
+
 define Build/InstallDev
        $(INSTALL_DIR) $(1)/usr/include
        $(CP) $(PKG_INSTALL_DIR)/usr/include/libupnpp $(1)/usr/include/