Prepend SysRoot to lib search path on freebsd (#115035)

Author: am11

src/coreclr/nativeaot/BuildIntegration/Microsoft.NETCore.Native.Unix.targets

@@ -262,9 +262,9 @@ The .NET Foundation licenses this file to you under the MIT license.
            see https://github.com/bminor/glibc/commit/99468ed45f5a58f584bab60364af937eb6f8afda -->
       <LinkerArg Include="-Wl,--defsym,__xmknod=mknod" Condition="'$(StaticExecutable)' == 'true'" />
       <!-- FreeBSD has two versions of the GSSAPI it can use, but we only use the ports version (MIT version) here -->
-      <LinkerArg Include="-L/usr/local/lib -lgssapi_krb5" Condition="'$(_targetOS)' == 'freebsd'" />
+      <LinkerArg Include="-L&quot;$(SysRoot)/usr/local/lib&quot; -lgssapi_krb5" Condition="'$(_targetOS)' == 'freebsd'" />
       <!-- FreeBSD's inotify is an installed package and not found in default libraries  -->
-      <LinkerArg Include="-L/usr/local/lib -linotify" Condition="'$(_targetOS)' == 'freebsd'" />
+      <LinkerArg Include="-L&quot;$(SysRoot)/usr/local/lib&quot; -linotify" Condition="'$(_targetOS)' == 'freebsd'" />
       <LinkerArg Include="@(ExtraLinkerArg->'-Wl,%(Identity)')" />
       <LinkerArg Include="@(NativeFramework->'-framework %(Identity)')" Condition="'$(_IsApplePlatform)' == 'true'" />
       <LinkerArg Include="-Wl,--eh-frame-hdr" Condition="'$(_IsApplePlatform)' != 'true'" />