[Bug 243108] [PATCH] security/nmap: Fix build when libpcap installed

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243108

            Bug ID: 243108
           Summary: [PATCH] security/nmap: Fix build when libpcap
                    installed
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: ohauer at FreeBSD.org
          Reporter: glewis at FreeBSD.org
          Assignee: ohauer at FreeBSD.org
             Flags: maintainer-feedback?(ohauer at FreeBSD.org)

Created attachment 210461
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=210461&action=edit
Force the internal headers to be used

I tried to build security/nmap with net/libpcap installed and it failed
building nmap's internally bundled libpcap:

cc -fvisibility=hidden -O2 -pipe  -I/usr/local/include -fstack-protector-strong
-fno-strict-aliasing  -fpic -I.  -I/usr/local/include -DBUILDING_PCAP
-Dpcap_EXPORTS -DHAVE_CONFIG_H  -O2 -pipe  -I/usr/local/include
-fstack-protector-strong -fno-strict-aliasing     -c ./pcap.c
./pcap.c:2911:2: error: use of undeclared identifier 'DLT_IPMB'
        DLT_CHOICE(IPMB, "IPMB"),
        ^
./pcap.c:2829:61: note: expanded from macro 'DLT_CHOICE'
#define DLT_CHOICE(code, description) { #code, description, DLT_ ## code }
                                                            ^
<scratch space>:261:1: note: expanded from here
DLT_IPMB
^
1 error generated.
gmake[3]: *** [Makefile:84: pcap.o] Error 1

The attached patch for the Makefile fixed this by forcing it to use the
internal headers rather than the headers from net/libpcap that are installed in
/usr/local/include.

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