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configure: Make sure libxdp is before libbpf in linker arguments

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When libxdp is linked against the submodule libbpf, the order of linker
arguments is important because libxdp.a needs symbols from libbpf.a. Fix up
configure so it ensures this.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
This commit is contained in:
Toke Høiland-Jørgensen
2022-04-27 00:43:02 +02:00
parent c2eb81ec70
commit c673cf628f
1 changed files with 7 additions and 1 deletions
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8
configure vendored
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@@ -196,12 +196,18 @@ check_libxdp()
LIBBPF_INCLUDE_DIR="$(readlink -m lib/install/include)" \
LIBBPF_UNBUILT=1;
cd lib/xdp-tools; ./configure)
# libxdp.a has to come before libbpf.a so the former can pick up symbols
# from the latter
sed -i 's/-l:libbpf.a/-l:libxdp.a -l:libbpf.a/' $CONFIG
else
echo "Configuring libxdp without our libbpf"
(cd lib/xdp-tools; ./configure)
echo 'LDLIBS += -l:libxdp.a' >>$CONFIG
fi
echo 'LDFLAGS += -L$(LIB_DIR)/install/lib' >>$CONFIG
echo 'LDLIBS += -l:libxdp.a' >>$CONFIG
echo 'OBJECT_LIBXDP = $(LIB_DIR)/install/lib/libxdp.a' >>$CONFIG
if ! [ -d "lib/xdp-tools/lib" ] && [ -f ".gitmodules" ] && [ -e ".git" ]; then
git submodule init && git submodule update