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From: Christian Rudiger <christianruediger AT gmx DOT net>
Subject: Re: g++ libcygwin.a has an undefined reference
Date: Tue, 18 May 2004 11:23:15 +0100
Lines: 155
Message-ID: <c8cnvd$4bp$1@sea.gmane.org>
References: <c8cn3t$21u$1 AT sea DOT gmane DOT org> <00ae01c43cbf$d7d88d50$350aa8c0 AT pavilion>
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In-Reply-To: <00ae01c43cbf$d7d88d50$350aa8c0@pavilion>
Hello Al,
thank you, it worked.
i putted one at the end of the program just writing :
}; // end of class
int main(){}
why does that work? I think thats strange.
Regards Christian Rudiger
Al Slater wrote:
> Try putting a main function in the program!
>
> Regards
>
> Al
>
>
>>-----Original Message-----
>>From: cygwin-owner AT cygwin DOT com
>>[mailto:cygwin-owner AT cygwin DOT com] On Behalf Of Christian Rudiger
>>Sent: 18 May 2004 11:09
>>To: cygwin AT cygwin DOT com
>>Subject: g++ libcygwin.a has an undefined reference
>>
>>
>>Hello there,
>>
>>i think the following problem has to do with cygwin, cause
>>libcygwin.a
>>has an undefined reference.
>>I get the error message when compiling my little testprogram.
>>The Programm and complete compiler messages follow:
>>
>>*************************************************************
>>
>>// reading a text file
>>#include <iostream.h>
>>#include <fstream.h>
>>#include <stdlib.h>
>>#include <string.h>
>>
>>using namespace std;
>>
>>class tryit {
>>
>> char *FILE_POSTFIX;// = new "myfile.txt"; <- ausserhalb
>>nicht m�glich
>> string posti;
>>public:
>> int main (int argc, char** argv) {
>>
>> FILE_POSTFIX = new char[10]; //"Nodes.txt"; <- erst
>>allocieren dann
>>zuweisen !
>> FILE_POSTFIX = "NODES.txt";
>> char *filename = FILE_POSTFIX;
>> char *output;
>> ifstream in (filename) ;
>> while (in){
>> in >> output ;
>> cout << output << endl;
>> return 0;
>> }
>> }
>>};
>>
>>*************************************************************
>>
>>g++ -v -Wall -Wno-deprecated tryme.cpp -o testthings.exe
>>Reading specs from /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/specs
>>Configured with: /GCC/gcc-3.3.1-3/configure --with-gcc --with-gnu-ld
>>--with-gnu-as --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc
>>--libdir=/usr/lib --libexecdir=/usr/sbin --mandir=/usr/share/man
>>--infodir=/usr/share/info
>>--enable-languages=c,ada,c++,f77,pascal,java,objc --enable-libgcj
>>--enable-threads=posix --with-system-zlib --enable-nls
>>--without-included-gettext --enable-interpreter
>>--enable-sjlj-exceptions
>>--disable-version-specific-runtime-libs --enable-shared
>>--disable-win32-registry --enable-java-gc=boehm
>>--disable-hash-synchronization --verbose --target=i686-pc-cygwin
>>--host=i686-pc-cygwin --build=i686-pc-cygwin
>>Thread model: posix
>>gcc version 3.3.1 (cygming special)
>> /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/cc1plus.exe -quiet -v
>>-D__GNUC__=3 -D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=1
>>-D__CYGWIN32__
>>-D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter
>>/usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../../../include/w32api
>>-idirafter
>>/usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../../../i686-pc-cygw
>
> in/lib/../../include/w32api
>
>>tryme.cpp -D__GNUG__=3 -quiet -dumpbase tryme.cpp -auxbase
>>tryme -Wall
>>-Wno-deprecated -version -o /cygdrive/d/TMP/cc55YaOO.s
>>GNU C++ version 3.3.1 (cygming special) (i686-pc-cygwin)
>> compiled by GNU C version 3.3.1 (cygming special).
>>GGC heuristics: --param ggc-min-expand=47 --param
>>ggc-min-heapsize=32700 ignoring nonexistent directory
>>"/usr/local/include" ignoring nonexistent directory
>>"/usr/i686-pc-cygwin/include" ignoring duplicate directory
>>"/usr/i686-pc-cygwin/lib/../../include/w32api"
>>#include "..." search starts here:
>>#include <...> search starts here:
>> /usr/include/c++/3.3.1
>> /usr/include/c++/3.3.1/i686-pc-cygwin
>> /usr/include/c++/3.3.1/backward
>> /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/include
>> /usr/include
>> /usr/include/w32api
>>End of search list.
>>
>>/usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../../../i686-pc-cygw
>
> in/bin/as.exe
>
>>--traditional-format -o /cygdrive/d/TMP/ccbPwKZW.o
>>/cygdrive/d/TMP/cc55YaOO.s
>> /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/collect2.exe -Bdynamic
>>--dll-search-prefix=cyg -o testthings.exe
>>/usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../../crt0.o
>>/usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/crtbegin.o
>>-L/usr/lib/gcc-lib/i686-pc-cygwin/3.3.1
>>-L/usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../..
>>/cygdrive/d/TMP/ccbPwKZW.o -lstdc++ -lgcc -lcygwin -luser32
>>-lkernel32
>>-ladvapi32 -lshell32 -lgcc
>>/usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/crtend.o
>>/usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../../libcygwin.a(lib
>>cmain.o)(.text+0x7c):
>>undefined reference to `_WinMain AT 16'
>>collect2: ld returned 1 exit status
>>make: *** [testthings.exe] Error 1
>>
>>Compilation exited abnormally with code 2 at Tue May 18 11:05:17
>>
>>
>>Regards Christian Rudiger
>>
>>
>>--
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>
>
>
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