Build for mips64

[soxrok2212]

Hi!

I'm trying make a statically linked mips64 binary. I've built libpcap and libnet with mips64-linux-gnuabi64- cross compiler just fine and specified the paths, as well as added the -static flag. 2 problems arise.

1. If I don't specify the includes path, the pcap version check fails:

   $ CFLAGS="-static -I../libpcap/include" CC=mips64-linux-gnuabi64-gcc CXX=mips64-linux-gnuabi64-g++ ./configure --host=mips64-linux-gnuabi64 --with-pcap-includes=../libpcap --with-libnet-includes=../libnet
   checking build system type... aarch64-unknown-linux-gnu
   checking host system type... mips64-unknown-linux-gnuabi64
   checking target system type... mips64-unknown-linux-gnuabi64
   checking for a BSD-compatible install... /usr/bin/install -c
   checking whether build environment is sane... yes
   checking for mips64-linux-gnuabi64-strip... mips64-linux-gnuabi64-strip
   checking for a race-free mkdir -p... /usr/bin/mkdir -p
   checking for gawk... gawk
   checking whether make sets $(MAKE)... yes
   checking whether make supports nested variables... yes
   checking for mips64-linux-gnuabi64-gcc... mips64-linux-gnuabi64-gcc
   checking whether the C compiler works... yes
   checking for C compiler default output file name... a.out
   checking for suffix of executables... 
   checking whether we are cross compiling... yes
   checking for suffix of object files... o
   checking whether the compiler supports GNU C... yes
   checking whether mips64-linux-gnuabi64-gcc accepts -g... yes
   checking for mips64-linux-gnuabi64-gcc option to enable C11 features... none needed
   checking whether mips64-linux-gnuabi64-gcc understands -c and -o together... yes
   checking whether make supports the include directive... yes (GNU style)
   checking dependency style of mips64-linux-gnuabi64-gcc... none
   checking for stdio.h... yes
   checking for stdlib.h... yes
   checking for string.h... yes
   checking for inttypes.h... yes
   checking for stdint.h... yes
   checking for strings.h... yes
   checking for sys/stat.h... yes
   checking for sys/types.h... yes
   checking for unistd.h... yes
   checking for sys/time.h... yes
   checking for grep that handles long lines and -e... /usr/bin/grep
   checking for egrep... /usr/bin/grep -E
   checking for makedepend... no
   checking if unaligned accesses fail... yes
   checking for main in -lsocket... no
   checking for main in -lresolv... yes
   checking for main in -lnsl... no
   checking for main in -lrt... yes
   checking for a complete set of pcap headers... found ../libpcap
   checking for pcap_lib_version in -lpcap... no
   checking for pcap_dump_flush in -lpcap... no
   checking for BPF device sending support... configure: error: in `/home/soxrok2212/mips64/yersinia':
   configure: error: cannot run test program while cross compiling
   See `config.log' for more details

2. If I specify it the includes, it seems to fail during testing? or something with Berkeley Packet Filters, understandable since its being building on an arm64 system.

   $ LDFLAGS=-L../libpcap  CFLAGS="-static -I../libpcap/include" CC=mips64-linux-gnuabi64-gcc CXX=mips64-linux-gnuabi64-g++ ./configure --host=mips64-linux-gnuabi64 --with-pcap-includes=../libpcap --with-libnet-includes=../libnet
   checking build system type... aarch64-unknown-linux-gnu
   checking host system type... mips64-unknown-linux-gnuabi64
   checking target system type... mips64-unknown-linux-gnuabi64
   checking for a BSD-compatible install... /usr/bin/install -c
   checking whether build environment is sane... yes
   checking for mips64-linux-gnuabi64-strip... mips64-linux-gnuabi64-strip
   checking for a race-free mkdir -p... /usr/bin/mkdir -p
   checking for gawk... gawk
   checking whether make sets $(MAKE)... yes
   checking whether make supports nested variables... yes
   checking for mips64-linux-gnuabi64-gcc... mips64-linux-gnuabi64-gcc
   checking whether the C compiler works... yes
   checking for C compiler default output file name... a.out
   checking for suffix of executables... 
   checking whether we are cross compiling... yes
   checking for suffix of object files... o
   checking whether the compiler supports GNU C... yes
   checking whether mips64-linux-gnuabi64-gcc accepts -g... yes
   checking for mips64-linux-gnuabi64-gcc option to enable C11 features... none needed
   checking whether mips64-linux-gnuabi64-gcc understands -c and -o together... yes
   checking whether make supports the include directive... yes (GNU style)
   checking dependency style of mips64-linux-gnuabi64-gcc... none
   checking for stdio.h... yes
   checking for stdlib.h... yes
   checking for string.h... yes
   checking for inttypes.h... yes
   checking for stdint.h... yes
   checking for strings.h... yes
   checking for sys/stat.h... yes
   checking for sys/types.h... yes
   checking for unistd.h... yes
   checking for sys/time.h... yes
   checking for grep that handles long lines and -e... /usr/bin/grep
   checking for egrep... /usr/bin/grep -E
   checking for makedepend... no
   checking if unaligned accesses fail... yes
   checking for main in -lsocket... no
   checking for main in -lresolv... yes
   checking for main in -lnsl... no
   checking for main in -lrt... yes
   checking for a complete set of pcap headers... found ../libpcap
   checking for pcap_lib_version in -lpcap... yes
   checking for pcap_dump_flush in -lpcap... yes
   checking for BPF device sending support... configure: error: in `/home/soxrok2212/mips64/yersinia':
   configure: error: cannot run test program while cross compiling
   See `config.log' for more details

Any ideas?

[soxrok2212]

I did get this to work, though it was a bit convoluted. In the end, my build command was: CC=mips64-linux-gnuabi64-gcc ./configure --host=mips64-linux-gnuabi64 --with-pcap-includes=/path/to/compiled/libpcap --with-libnet-includes=/path/to/compiled/libnet/include --disable-gtk --disable-admin --with-ncurses=/path/to/compiled/ncurses

Some caveats:

• libpcap does not have a proper include directory when built from source, so the --with-pcap-includes points to the libpcap root directory.
• libnet puts the compiled shared objects in src/.libs/, the contents of that directory should be copied into the libnet root directory
• libnet version >= 1.1.2 check always seems to fail. In configure, I changed the have_libnet=no to have_libnet=yes line below checking if libnet is at least version 1.1.2, my exact line number may be off as I put some extra debug prints but for me, its around line 5482.
• setting the environment var CFLAGS=-static seemed to be ignored; I had to add it to the Makefile in src after configure completed

And then, it successfully built a statically linked binary that worked. So if there are any authors still working on this lovely project, there's a little bit of work needed to make cross compiling work effectively. I'm not very familiar with autoconf, else I'd make a PR of my own. Perhaps I'll try when I get some more time.

[aoshiken]

Good work @soxrok2212