1. configure配置

./configure \
    --prefix=${INSTALL_DIR} \
    --build=x86_64-linux \
    --host=x86_64-poky-linux \
    --enable-shared \
    --with-default-snmp-version="3" \
    --enable-ipv6 \
    --with-openssl \
    --enable-mfd-rewrites \
    --with-logfile="/cfg/var/log/snmpd.log" \
    --with-persistent-directory="/cfg/var/net-snmp" \
    --disable-manuals \
    --disable-ucd-snmp-compatibility \
    --enable-as-needed \
    --with-mib-modules="ucd-snmp/diskio" \
    --without-kmem-usage \
    ac_cv_header_linux_ethtool_h=no \
    --disable-embedded-perl \
    --with-openssl=${SDKTARGETSYSROOT}/usr/lib

2. make后报错

/usr/bin/ld: cannot find /lib/libm.so.6
/usr/bin/ld: cannot find /lib/libmvec.so.1
collect2: error: ld returned 1 exit status
Makefile:459: recipe for target '../blib/arch/auto/NetSNMP/default_store/default_store.so' failed
make[2]: *** [../blib/arch/auto/NetSNMP/default_store/default_store.so] Error 1
make[2]: Leaving directory '/net-snmp-5.7.3/perl/default_store'
Makefile:484: recipe for target 'subdirs' failed
make[1]: *** [subdirs] Error 2
make[1]: Leaving directory '/net-snmp-5.7.3/perl'
Makefile:295: recipe for target 'perlmodules' failed
make: *** [perlmodules] Error 1

3. 解决方案

x86_64-poky-linux-gcc -print-file-name=libm.so.6执行后结果为：libm.so.6，说明该工具链不能正确找到sysroot路径，需要手动显式指定。x86_64-poky-linux-gcc --sysroot=/intel-corei7-64/v2.0.3/sysroots/corei7-64-poky-linux/ -print-file-name=libm.so.6执行后结果为：/intel-corei7-64/v2.0.3/sysroots/corei7-64-poky-linux/lib/../lib/libm.so.6，说明工具链能够正常工作了。

对于make后找不到libm.so.6和libmvec.so.1的情况，只需找到对应Makefile，对应的地方添加--sysroot=/intel-corei7-64/v2.0.3/sysroots/corei7-64-poky-linux/即可。