From 89ad9c143825b13d028c2f1713d55e83135d5c0f Mon Sep 17 00:00:00 2001 From: Fabrice Fontaine Date: Sat, 5 Sep 2020 15:38:33 +0200 Subject: [PATCH] CMakesLists.txt: fix static build with pcap Use pkg-config to find the dependencies of pcap such as libnl otherwise a static-only build will fail on: [100%] Linking C executable ef /srv/storage/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/8.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: /srv/storage/autobuild/run/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libpcap.a(pcap-linux.o): in function `nl80211_init': pcap-linux.c:(.text+0x460): undefined reference to `nl_socket_alloc' /srv/storage/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/8.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: pcap-linux.c:(.text+0x498): undefined reference to `genl_connect' Fixes: - http://autobuild.buildroot.org/results/99062bfc8c21c32bc835acae675aede7c9cf0c90 Signed-off-by: Fabrice Fontaine [Upstream status: https://github.com/microchip-ung/easyframes/pull/2] --- CMakeLists.txt | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/CMakeLists.txt b/CMakeLists.txt index a62a950..5be128c 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -7,13 +7,21 @@ include_directories(src) set(_LIBPCAP "") -FIND_PATH(PCAP_INCLUDE_DIR NAMES pcap/pcap.h) -FIND_LIBRARY(PCAP_LIBRARY NAMES pcap) - -if (PCAP_LIBRARY) +find_package(PkgConfig) +pkg_check_modules(PCAP libpcap) +if (PCAP_FOUND) add_definitions(-DHAS_LIBPCAP) - include_directories(${PCAP_INCLUDE_DIR}) - set(_LIBPCAP ${PCAP_LIBRARY}) + include_directories(${PCAP_INCLUDE_DIRS}) + set(_LIBPCAP ${PCAP_LIBRARIES}) +else() + FIND_PATH(PCAP_INCLUDE_DIR NAMES pcap/pcap.h) + FIND_LIBRARY(PCAP_LIBRARY NAMES pcap) + + if (PCAP_LIBRARY) + add_definitions(-DHAS_LIBPCAP) + include_directories(${PCAP_INCLUDE_DIR}) + set(_LIBPCAP ${PCAP_LIBRARY}) + endif() endif() add_library(libef STATIC -- 2.28.0