From aed58f545bec0712bcdbe14e2b8386db0c650a91 Mon Sep 17 00:00:00 2001 From: Alyssa Ross Date: Sun, 2 Apr 2023 23:29:40 +0000 Subject: build: use pkg-config for libpcap If building statically, with libpcap built with libnl support, linking will fail, as the compiler won't be able to find the libnl symbols since static libraries don't contain dependency information. To fix this, use pkg-config to find the flags for linking libpcap, since the pkg-config files contain the neccesary dependency information. autoconf will add code to the configure script for initializing pkg-config the first time it seems PKG_CHECK_MODULES, so make the libnfnetlink check the first one in the script, so the initialization code is run unconditionally. Signed-off-by: Alyssa Ross Signed-off-by: Phil Sutter --- configure.ac | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'configure.ac') diff --git a/configure.ac b/configure.ac index bc2ed47b..488c01eb 100644 --- a/configure.ac +++ b/configure.ac @@ -113,14 +113,15 @@ AM_CONDITIONAL([ENABLE_SYNCONF], [test "$enable_nfsynproxy" = "yes"]) AM_CONDITIONAL([ENABLE_NFTABLES], [test "$enable_nftables" = "yes"]) AM_CONDITIONAL([ENABLE_CONNLABEL], [test "$enable_connlabel" = "yes"]) -if test "x$enable_bpfc" = "xyes" || test "x$enable_nfsynproxy" = "xyes"; then - AC_CHECK_LIB(pcap, pcap_compile,, AC_MSG_ERROR(missing libpcap library required by bpf compiler or nfsynproxy tool)) -fi - PKG_CHECK_MODULES([libnfnetlink], [libnfnetlink >= 1.0], [nfnetlink=1], [nfnetlink=0]) AM_CONDITIONAL([HAVE_LIBNFNETLINK], [test "$nfnetlink" = 1]) +if test "x$enable_bpfc" = "xyes" || test "x$enable_nfsynproxy" = "xyes"; then + PKG_CHECK_MODULES([libpcap], [libpcap], [], [ + AC_MSG_ERROR(missing libpcap library required by bpf compiler or nfsynproxy tool)]) +fi + if test "x$enable_nftables" = "xyes"; then PKG_CHECK_MODULES([libmnl], [libmnl >= 1.0], [mnl=1], [mnl=0]) -- cgit v1.2.3