This is the mail archive of the cygwin mailing list for the Cygwin project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

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 möglich
  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-cygwin/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-cygwin/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(libcmain.o)(.text+0x7c): undefined reference to `_WinMain@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



-- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]