Cannot compile libnfc - regex.h

[Bjonnfesk]

For the past several days, I have been trying to compile libnfc for Windows 7 x64. This is for use in a production application (check-in using RFID cards and an ACR122S RFID reader). After much ado, I have overcome the initial errors, but I am stuck at this one:

After configuring everything correctly (I think), I run mingw32-make as recommended in libnfc-1.7.0-rc4/readme-windows.txt:49 in order to compile libnfc. This gives the error, and I quote:

E:\dev\libnfc-1.7.0-rc4\libnfc\conf.c:28:19: fatal error: regex.h: No such file or directory
compilation terminated.
libnfc\CMakeFiles\nfc.dir\build.make:153: recipe for target 'libnfc/CMakeFiles/nfc.dir/conf.c.obj' failed
mingw32-make[2]: *** [libnfc/CMakeFiles/nfc.dir/conf.c.obj] Error 1
CMakeFiles\Makefile2:79: recipe for target 'libnfc/CMakeFiles/nfc.dir/all' failed
mingw32-make[1]: *** [libnfc/CMakeFiles/nfc.dir/all] Error 2
Makefile:135: recipe for target 'all' failed
mingw32-make: *** [all] Error 2

What should I do to fix this? It's probably something really stupid and noobish that I just haven't thought about :(

[B]Disregard the above, it has been fixed. New problems have arisen, however.[/B]

I managed to find a working regex.h and used that one, it compiled a few of the files but never finished. It required a winscard.h, winsmcrd.h and winapifamily.h. I obtained the first two from MinGW64, the last one from C:\Program Files (x86)\Windows Kits\8.0\Include\shared (maybe the wrong version?), and it passed until I got this:

E:\dev\libnfc-build\bin>mingw32-make
[  1%] Building C object libnfc/CMakeFiles/nfc.dir/drivers/pn53x_usb.c.obj
E:\dev\libnfc-1.7.0-rc4\libnfc\drivers\pn53x_usb.c: In function 'pn53x_usb_connstring_decode':
E:\dev\libnfc-1.7.0-rc4\libnfc\drivers\pn53x_usb.c:276:5: warning: implicit declaration of function 'strdup' [-Wimplicit-function-declaration]
E:\dev\libnfc-1.7.0-rc4\libnfc\drivers\pn53x_usb.c:276:20: warning: assignment makes pointer from integer without a cast [enabled by default]
E:\dev\libnfc-1.7.0-rc4\libnfc\drivers\pn53x_usb.c:277:20: warning: assignment makes pointer from integer without a cast [enabled by default]
E:\dev\libnfc-1.7.0-rc4\libnfc\drivers\pn53x_usb.c: In function 'pn53x_usb_receive':
E:\dev\libnfc-1.7.0-rc4\libnfc\drivers\pn53x_usb.c:520:3: error: unknown type name 'off_t'
E:\dev\libnfc-1.7.0-rc4\libnfc\drivers\pn53x_usb.c:606:5: warning: unknown conversion type character 'z' in format [-Wformat]
E:\dev\libnfc-1.7.0-rc4\libnfc\drivers\pn53x_usb.c:606:5: warning: unknown conversion type character 'z' in format [-Wformat]
E:\dev\libnfc-1.7.0-rc4\libnfc\drivers\pn53x_usb.c:606:5: warning: too many arguments for format [-Wformat-extra-args]
libnfc\CMakeFiles\nfc.dir\build.make:297: recipe for target 'libnfc/CMakeFiles/nfc.dir/drivers/pn53x_usb.c.obj' failed
mingw32-make[2]: *** [libnfc/CMakeFiles/nfc.dir/drivers/pn53x_usb.c.obj] Error 1
CMakeFiles\Makefile2:79: recipe for target 'libnfc/CMakeFiles/nfc.dir/all' failed
mingw32-make[1]: *** [libnfc/CMakeFiles/nfc.dir/all] Error 2
Makefile:135: recipe for target 'all' failed
mingw32-make: *** [all] Error 2

It appears that the problematic line is (line 520 of pn53x_usb.c)

 off_t offset = 0;

Any suggestions?

[jalb]

[QUOTE=Bjonnfesk;39536260]

 off_t offset = 0;

Any suggestions?[/QUOTE]

off_t appears to be included in sys/types.h but I don't know if MinGW would contain that file.
[url]http://pubs.opengroup.org/onlinepubs/000095399/basedefs/sys/types.h.html[/url]

It is also possible that your headers are incorrect and resolving this issue will lead to more issues. You might look around for an alternate regex.h.

[Bjonnfesk]

An alternate regex.h might be the solution, although I would find that strange since the regex.h I used was from PCRE, which is referenced in the libnfc readme. I'd rather think it was winapifamily.h that was the problem, since it comes from the Windows 8 SDK (which seems very strange to me), but I was unable to find another version with the same name. Sometimes I just want to drop the talentless Windows and use Linux exclusively (Linux, of course, compiles libnfc without blinking), but I don't think the people I'm making this for would be very happy with me if I told them it only works on Linux.