iperf: add -lm to fix build with newer glibc

Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/package/network/utils/iperf/Makefile b/package/network/utils/iperf/Makefile
index 2bd19173c08ffcb05f106e1d8284fc9bb59a09da..c47830c5cd79bad2039320d132dee583cbd5a492 100644 (file)
--- a/package/network/utils/iperf/Makefile
+++ b/package/network/utils/iperf/Makefile
@@ -41,7 +41,7 @@ TARGET_CFLAGS += -D_GNU_SOURCE
 CONFIGURE_ARGS += --disable-multicast
 
 CONFIGURE_VARS += CXXFLAGS="$$$$CXXFLAGS -fno-rtti"
-CONFIGURE_VARS += LIBS="-lpthread"
+CONFIGURE_VARS += LIBS="-lpthread -lm"
 
 define Package/iperf/install
        $(INSTALL_DIR) $(1)/usr/bin