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Subject:	Build problems using wxWidgets-2.8.10 / gcc-4.3.4 / cygwin-1.7.1 : multiple definitions of function select()
Date:	Thu, 14 Jan 2010 11:15:29 +0100
Message-ID:	<EF1A77D28DB45F428CDDDFA0357509D6B89942@RITTCLV101-02.rittmeyer.local>
From:	"Schwerzmann Stephan" <Stephan DOT Schwerzmann AT rittmeyer DOT com>
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Hello all,

I'm upgrading to 1.7.1 from the previous version which I was=20
pretty good at keeping up to date; until recently, I had this=20
combo in flawless use:
- wxWidgets-2.8.10 / gcc-3.4.4 / cygwin-1.5.25 / WinXP-SP3


The new combo
- wxWidgets-2.8.10 / gcc-4.3.4 / cygwin-1.7.1 / WinXP-SP3
Is giving me a build error for wxWidgets-2.8.10, which I started
discussing at
<http://trac.wxwidgets.org/ticket/11626>
where the issue is rated as "confirmed build error"

<cite>
All my variants of build attempts gave me consistently this error:
"""
    $ make BUILD=3Drelease SHARED=3D0
    /var/tmp/wxWidgets-2.8.10/bk-deps g++ -c -o baselib_msw_utils.o
-DWXMSW -I./src/tiff -I./src/jpeg -I./src/png -DwxUSE_GUI=3D0
-DwxUSE_BASE=3D1 -D_FILE_OFFSET_BITS=3D64 -D_LARGE_FILES
-I/var/tmp/wxWidgets-2.8.10/lib/wx/include/msw-ansi-release-static-2.8
-I./include -Wall -Wundef -Wno-ctor-dtor-privacy -O2
-fno-strict-aliasing ./src/msw/utils.cpp
    In file included from ./src/msw/utils.cpp:56:
=20
/usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../../include/w32api/winsock.h:4
79: error: declaration of C function 'int select(int, _types_fd_set*,
_types_fd_set*, _types_fd_set*, const timeval*)' conflicts with
    /usr/include/sys/select.h:31: error: previous declaration 'int
select(int, _types_fd_set*, _types_fd_set*, _types_fd_set*, timeval*)'
here
    ./src/msw/utils.cpp: In function 'const wxChar*
wxGetHomeDir(wxString*)':
    ./src/msw/utils.cpp:407: warning: 'int
cygwin_conv_to_full_win32_path(const char*, char*)' is deprecated
(declared at /usr/include/sys/cygwin.h:52)
    ./src/msw/utils.cpp:407: warning: 'int
cygwin_conv_to_full_win32_path(const char*, char*)' is deprecated
(declared at /usr/include/sys/cygwin.h:52)
    make: *** [baselib_msw_utils.o] Error 1

    $
"""
</cite>
(do I need to duplicate more details here, or is that link fine?)


It looks like something is mixing bad between cygwins=20
sys/select.h and w32api/winsock.h for the declaration of=20
function select()


As I do not clearly see thru the problem, I'm asking here
for advice on how to correct what to get wxWidget compiled under
the current cygwin version. Thanks in advance.

Stephan

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