fedi2edi cannot compile in cygwin

[andimik]

Today I tried to compile eti-tools in cygwin. But it fails:

cc -O2 -Wall -I. -c -o edi2eti.o edi2eti.c
cc -o edi2eti network.o af_parser.o pf_parser.o tag_parser.o crc.o eti_assembler.o logging.o edi2eti.o -lm
cc -O2 -Wall -I. -c -o fedi2eti.o fedi2eti.c
In file included from /usr/include/sys/fcntl.h:3,
                 from /usr/include/fcntl.h:12,
                 from fedi2eti.c:22:
edi_parser.h:109:14: error: expected identifier or '(' before numeric constant
  109 |     uint32_t FSYNC:24;
      |              ^~~~~
In file included from fedi2eti.c:29:
edi_parser.h:110:1: warning: no semicolon at end of struct or union
  110 | } PACKED;
      | ^
make: *** [Makefile:39: fedi2eti.o] Error 1

Any idea? This error does not appear in Linux.

[richard-gravy]

A quick stab at the issue, but I think "FSYNC" may already be defined in Cygwin gcc's internals somewhere, for compatibility with other software.

Try changing the name of the variable to something that you can guarantee won't have already been used, like uint32_t FHEEHOOHAH:24;.

If that works, then a precompile check for Cygwin and undef of the name may be necessary, or just change its name for all targets.

[andimik]

Well, I'm giving up and have switched to WSL2 Linux Sub System in Windows 11.

Because the compiled files won't start due to wrong architecture ...