Compiling librrd under Cygwin

[Andrey Repin]

Greetings, All!

I'm trying to match my Cygwin PHP install with native one, and one of the
steps is to build rrd extension. There's no librrd shipped with Cygwin, so I
have to build that first.

I've successfully configured it after installing of some -devel packages with
`./configure --prefix=`, but compiling fails with

rrd_open.c: In function ‘rrd_open’:
rrd_open.c:166:22: error: ‘MAP_FAILED’ undeclared (first use in this function)
  166 |     char     *data = MAP_FAILED;
      |                      ^~~~~~~~~~
rrd_open.c:166:22: note: each undeclared identifier is reported only once for each function it appears in
rrd_open.c:239:32: error: ‘PROT_READ’ undeclared (first use in this function)
  239 |     rrd_simple_file->mm_prot = PROT_READ;
      |                                ^~~~~~~~~
rrd_open.c:251:37: error: ‘MAP_PRIVATE’ undeclared (first use in this function)
  251 |         rrd_simple_file->mm_flags = MAP_PRIVATE;
      |                                     ^~~~~~~~~~~
rrd_open.c:265:41: error: ‘MAP_SHARED’ undeclared (first use in this function)
  265 |             rrd_simple_file->mm_flags = MAP_SHARED;
      |                                         ^~~~~~~~~~
rrd_open.c:266:41: error: ‘PROT_WRITE’ undeclared (first use in this function)
  266 |             rrd_simple_file->mm_prot |= PROT_WRITE;
      |                                         ^~~~~~~~~~
rrd_open.c:424:12: warning: implicit declaration of function ‘mmap’ [-Wimplicit-function-declaration]
  424 |     data = mmap(0, rrd_file->file_len,
      |            ^~~~
rrd_open.c:424:12: warning: nested extern declaration of ‘mmap’ [-Wnested-externs]
rrd_open.c:424:10: warning: assignment to ‘char *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
  424 |     data = mmap(0, rrd_file->file_len,
      |          ^
rrd_open.c:576:9: warning: implicit declaration of function ‘munmap’ [-Wimplicit-function-declaration]
  576 |         munmap(data, rrd_file->file_len);
      |         ^~~~~~
rrd_open.c:576:9: warning: nested extern declaration of ‘munmap’ [-Wnested-externs]
make[1]: *** [Makefile:1060: librrdupd_la-rrd_open.lo] Error 1
make[1]: Leaving directory '/c/arc/cygwin/software/librrd/rrdtool-1.7.2/src'
make: *** [Makefile:503: install-recursive] Error 1


Configure and make logs attached, as well as list of necessary -devel
packages.
I would appreciate any help with this issue.


-- 
With best regards,
Andrey Repin
Saturday, February 20, 2021 11:59:12

Sorry for my terrible english...
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