tcpreplay: improve search for libpcap

Add a test which will find libpcap if $testdir/.. is a sysroot.

Upstream-Status: Pending

Signed-off-by: Joe Slater <joe.slater@windriver.com>


--- a/configure.ac
+++ b/configure.ac
@@ -350,14 +350,20 @@ for testdir in $trypcapdir /usr/local /o
     if test -f "${testdir}/include/pcap.h" -a $foundpcap = no ; then
         LPCAPINC="${testdir}/include/pcap.h"
         LPCAPINCDIR="${testdir}/include"
+        # If testdir/.. is a sysroot, then sDir should point to where the libraries are.
+        sDir=$(readlink -m ${testdir}/../${libdir})
         if test $dynamic_link = yes; then
-            if test -f "${testdir}/lib64/libpcap${shrext_cmds}" ; then
+            if test -f "${sDir}/libpcap${shrext_cmds}" ; then
+                LPCAPLIB="-L${sDir} -lpcap"
+            elif test -f "${testdir}/lib64/libpcap${shrext_cmds}" ; then
                 LPCAPLIB="-L${testdir}/lib64 -lpcap"
             elif test -f "${testdir}/lib/libpcap${shrext_cmds}" ; then
                 LPCAPLIB="-L${testdir}/lib -lpcap"
             else
                 AC_ERROR([Unable to find libpcap in ${testdir}])
             fi
+        elif test -f "${sDir}/libpcap.${libext}" ; then
+            LPCAPLIB="${sDir}/libpcap.${libext}"
         elif test -f "${testdir}/lib64/libpcap.${libext}" ; then
             LPCAPLIB="${testdir}/lib64/libpcap.${libext}"
         elif test -f "${testdir}/lib/libpcap.${libext}" ; then