error during linking with gcc: multiple definition of `__cygwin_crt0_bp' ...

[kai]

Hello,

I wrote a little c++-program (hallo world) and I wanted to compile and
link this.
my steps:
1. set
GCC_EXEC_PREFIX=J:\Software\WinProgs\cyggnu\h-i386-cygwin32\lib\gcc-lib\
2. gcc test.cpp -o test.o

3. C:\tmp\rs\dev>gcc test.o -o "Project1.exe"
test.o(.data+0x0):fake: multiple definition of `__cygwin_crt0_bp'
J:\Software\WinProgs\cyggnu\h-i386-cygwin32\lib\gcc-lib\i386-cygwin32\2.7-B*19\../../../../i386-cygwin32\lib\crt0.o(.data+0x0):crt0.c:

first defined here
test.o(.text+0x0):fake: multiple definition of `mainCRTStartup'
J:\Software\WinProgs\cyggnu\h-i386-cygwin32\lib\gcc-lib\i386-cygwin32\2.7-B*19\../../../../i386-cygwin32\lib\crt0.o(.text+0x0):crt0.c:

first defined here
I don't get an executable.
What is the reason and how can I resolve this problem?
Thank's for your hints, Kai

[mlimber]

kai wrote:

Hello,

I wrote a little c++-program (hallo world) and I wanted to compile and
link this.
my steps:
1. set
GCC_EXEC_PREFIX=J:\Software\WinProgs\cyggnu\h-i386-cygwin32\lib\gcc-lib\
2. gcc test.cpp -o test.o

3. C:\tmp\rs\dev>gcc test.o -o "Project1.exe"
test.o(.data+0x0):fake: multiple definition of `__cygwin_crt0_bp'
J:\Software\WinProgs\cyggnu\h-i386-cygwin32\lib\gcc-lib\i386-cygwin32\2.7-B*19\../../../../i386-cygwin32\lib\crt0.o(.data+0x0):crt0.c:

first defined here
test.o(.text+0x0):fake: multiple definition of `mainCRTStartup'
J:\Software\WinProgs\cyggnu\h-i386-cygwin32\lib\gcc-lib\i386-cygwin32\2.7-B*19\../../../../i386-cygwin32\lib\crt0.o(.text+0x0):crt0.c:

first defined here
I don't get an executable.
What is the reason and how can I resolve this problem?
Thank's for your hints, Kai

This is a compiler-specific problem that you should take to a g++
forum. See this FAQ for what is on-topic here and for several other
newsgroups that you might try:

http://www.parashift.com/c++-faq-lit...t.html#faq-5.9

Cheers! --M

[Thomas Tutone]

kai wrote:

I wrote a little c++-program (hallo world) and I wanted to compile and
link this.
my steps:
1. set
GCC_EXEC_PREFIX=J:\Software\WinProgs\cyggnu\h-i386-cygwin32\lib\gcc-lib\
2. gcc test.cpp -o test.o

<implementation specific/>

Change the above line to:

gcc -Wall -Wextra -pedantic -c test.cpp -o test.o

</implementation specific>

[snip]

Best regards,

Tom