Xapian discuss - Jul 2015 - Trouble installing xapian on windows

Hello, i am trying to install xapian on windows. As the xapian download page
says, there are two options here:
1) mingw 
2) a separate set of makefiles for MSVC.

If i understand correctly, MSVC is supported only by xapian 1.2.8 and older, so
i decided to try mingw. The configure script worked perfectly, but
"make" finished with a error (see the output below). So far i have two
questions:

1) Why mingw is not working for me? Is it bug or i am doing something wrong?
2)Even if i would be able to compile xapian with mingw, could i use it in my
project (c++) that is supposed to be compiled by MSVC?


[HERE IS  OUTPUT OF THE MAKE COMMAND]

make[1]: Entering directory `/c/temp/xapian/xapian-core-1.2.21'
Making all in .
make[2]: Entering directory `/c/temp/xapian/xapian-core-1.2.21'
depbase=`echo api/compactor.lo | sed
's|[^/]*$|.deps/&|;s|\.lo$||'`;\
        /bin/sh ./libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I.  -
I./common -I./include   -fshow-column -Wall -W -Wredundant-decls -Wpointer-arith
 -Wcast-qual -Wcast-align -Wno-long-long -Wformat-security -fno-gnu-keywords -Wu
ndef -Woverloaded-virtual -Wstrict-null-sentinel -Wshadow -Wstrict-overflow=1 -W
logical-op -Wmissing-declarations -Wdouble-promotion -Winit-self -fvisibility=hi
dden -mfpmath=sse -msse2 -mtune=generic -g -O2 -MT api/compactor.lo -MD -MP -MF
$depbase.Tpo -c -o api/compactor.lo api/compactor.cc &&\
        mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I./common -I./include -fshow-column
-Wall -W -Wredundant-decls -Wpointer-arith -Wcast-qual -Wcast-align -Wno-long-lo
ng -Wformat-security -fno-gnu-keywords -Wundef -Woverloaded-virtual -Wstrict-nul
l-sentinel -Wshadow -Wstrict-overflow=1 -Wlogical-op -Wmissing-declarations -Wdo
uble-promotion -Winit-self -fvisibility=hidden -mfpmath=sse -msse2 -mtune=generi
c -g -O2 -MT api/compactor.lo -MD -MP -MF api/.deps/compactor.Tpo -c api/compact
or.cc  -DDLL_EXPORT -DPIC -o api/.libs/compactor.o
In file included from api/compactor.cc:39:0:
./common/safeunistd.h: In function 'unsigned int sleep(unsigned int)':
./common/safeunistd.h:56:1: error: redefinition of 'unsigned int
sleep(unsigned
int)'
 sleep(unsigned int seconds)
 ^
In file included from ./common/safeunistd.h:25:0,
                 from api/compactor.cc:39:
c:\mingw\include\unistd.h:142:10: error: 'unsigned int sleep(unsigned
int)' prev
iously defined here
 unsigned sleep( unsigned period ){ return __mingw_sleep( period, 0 ); }
          ^
make[2]: *** [api/compactor.lo] Error 1
make[2]: Leaving directory `/c/temp/xapian/xapian-core-1.2.21'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/c/temp/xapian/xapian-core-1.2.21'
make: *** [all] Error 2

On Sat, Jul 04, 2015 at 09:12:30AM -0400, john.alveris at Safe-mail.net
wrote:
> Hello, i am trying to install xapian on windows. As the xapian
> download page says, there are two options here:
> 1) mingw 
> 2) a separate set of makefiles for MSVC.
> 
> If i understand correctly, MSVC is supported only by xapian 1.2.8 and older
There's certainly nobody actively maintaining the MSVC makefiles
currently.  I did hear a success story not so long ago with using them
to build 1.2.x.  Not sure what version that was with, but looking at
http://trac.xapian.org/ticket/530 suggests it was 1.2.18.

If someone wants to start maintaining them, that would probably be
useful, though I feel that maintaining a whole parallel build system
for one compiler is not a great approach, and that it would be better
to get MSVC working with the standard build system - a quick search
for 'autoconf msvc' leads me to this thread which suggests it is
mostly a matter of installing MSYS and passing suitable options to
configure:

https://lists.gnu.org/archive/html/automake/2011-09/msg00003.html
> so i decided to try mingw. The configure script worked perfectly, but
> "make" finished with a error (see the output below). So far i
have two
> questions:
> 
> 1) Why mingw is not working for me? Is it bug or i am doing something
wrong?
Our buildbot has a mingw-w64 cross-compiled build which seems to be
working currently:

http://buildbot.xapian.org/builders/stable%20tar%20mingw-cross
> ./common/safeunistd.h: In function 'unsigned int sleep(unsigned
int)':
> ./common/safeunistd.h:56:1: error: redefinition of 'unsigned int
sleep(unsigned
> int)'
>  sleep(unsigned int seconds)
>  ^
> In file included from ./common/safeunistd.h:25:0,
>                  from api/compactor.cc:39:
> c:\mingw\include\unistd.h:142:10: error: 'unsigned int sleep(unsigned
int)' prev
> iously defined here
>  unsigned sleep( unsigned period ){ return __mingw_sleep( period, 0 ); }
>           ^
I guess this is either mingw vs mingw-w64 difference, or a version
difference, as the headers of the version that the buildbot has define
sleep() rather differently.

A quick local fix which should make it work is to modify
common/safeunistd.h and change:

#ifdef __WIN32__

into:

#if 0
> 2)Even if i would be able to compile xapian with mingw, could i use it
> in my project (c++) that is supposed to be compiled by MSVC?
You can mix C code compiled with mingw and MSVC, but you can't mix C++
code:

http://www.mingw.org/wiki/Interoperability_of_Libraries_Created_by_Different_Compiler_Brands

So only if you compile your project with mingw too.

Cheers,
    Olly

On Sun, Jul 05, 2015 at 02:31:37PM +0100, Olly Betts
wrote:
> I guess this is either mingw vs mingw-w64 difference, or a version
> difference, as the headers of the version that the buildbot has define
> sleep() rather differently.
I've pushed a fix to not use our fallback sleep() implementation if
there's a version in the C library, and will backport it to 1.2 before
the next release.

Cheers,
    Olly