Build problems using wxWidgets-2.8.10 / gcc-4.3.4 / cygwin-1.7.1 : multiple definitions of function select()
Hello all, I'm upgrading to 1.7.1 from the previous version which I was pretty good at keeping up to date; until recently, I had this 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=release SHARED=0 /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=0 -DwxUSE_BASE=1 -D_FILE_OFFSET_BITS=64 -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: /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 sys/select.h and w32api/winsock.h for the declaration of 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 -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: Build problems using wxWidgets-2.8.10 / gcc-4.3.4 / cygwin-1.7.1 : multiple definitions of function select()
On 2010-01-14 10:15Z, Schwerzmann Stephan wrote: /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*)' As to whether select() takes a const or non-const timeval* argument: http://msdn.microsoft.com/en-us/library/ms740141%28VS.85%29.aspx msdn says it's const, so that's what include/w32api must do http://www.opengroup.org/onlinepubs/007908799/xsh/select.html posix says it isn't const, so that's what /usr/include must do So you can't combine them. See also: http://cygwin.com/ml/cygwin/2008-08/msg00133.html | You're getting a bunch of errors because incluing winsock2.h causes lots | of namespace clashes. And how could it not? It provides a different | and incompatible set of definitions for the sockets API which is not | compatible with the standard POSIX definitions in the Cygwin headers. | Again: the problem is that you should not attempt to use the Winsock API | from a Cygwin application. ./src/msw/utils.cpp:407: warning: 'int cygwin_conv_to_full_win32_path(const char*, char*)' is deprecated http://www.cygwin.com/ml/cygwin-cvs/2008-q1/msg00111.html | (cygwin_conv_to_win32_path): Just call cygwin_conv_path with size set | to MAX_PATH. | (cygwin_conv_to_full_win32_path): Ditto. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: Build problems using wxWidgets-2.8.10 / gcc-4.3.4 / cygwin-1.7.1 : multiple definitions of function select()
On Jan 14 12:32, Greg Chicares wrote: On 2010-01-14 10:15Z, Schwerzmann Stephan wrote: /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*)' As to whether select() takes a const or non-const timeval* argument: http://msdn.microsoft.com/en-us/library/ms740141%28VS.85%29.aspx msdn says it's const, so that's what include/w32api must do http://www.opengroup.org/onlinepubs/007908799/xsh/select.html posix says it isn't const, so that's what /usr/include must do So you can't combine them. See also: http://cygwin.com/ml/cygwin/2008-08/msg00133.html | You're getting a bunch of errors because incluing winsock2.h causes lots | of namespace clashes. And how could it not? It provides a different | and incompatible set of definitions for the sockets API which is not | compatible with the standard POSIX definitions in the Cygwin headers. | Again: the problem is that you should not attempt to use the Winsock API | from a Cygwin application. Yes. Don't mix winsock and Cygwin sockets unless you know *exactly* what you're doing. On the application level there's usually no reason at all to include winsock headers and to use winsock sockets instead of Cygwin sockets. If wxWidgets is doing that, the developers should be able to tell you why. If it's for instance, IPv6, that's available in Cygwin now as well. ./src/msw/utils.cpp:407: warning: 'int cygwin_conv_to_full_win32_path(const char*, char*)' is deprecated http://www.cygwin.com/ml/cygwin-cvs/2008-q1/msg00111.html | (cygwin_conv_to_win32_path): Just call cygwin_conv_path with size set | to MAX_PATH. | (cygwin_conv_to_full_win32_path): Ditto. And http://cygwin.com/cygwin-api/func-cygwin-conv-path.html Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
