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Message-ID: <009701c124f8$09890ab0$2fdd18ac@amr.corp.intel.com>
From: "Tim Prince" <tprince AT computer DOT org>
To: "Astrid Burghard" <Astrid DOT Burghard AT t-online DOT de>, <cygwin AT cygwin DOT com>
References: <15WhV9-0UCd3gC AT fwd03 DOT sul DOT t-online DOT com>
Subject: Re: gcc linking problem - badly installed?
Date: Tue, 14 Aug 2001 12:23:37 -0700
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----- Original Message -----
From: "Astrid Burghard" <Astrid DOT Burghard AT t-online DOT de>
To: <cygwin AT cygwin DOT com>
Sent: Tuesday, August 14, 2001 9:57 AM
Subject: gcc linking problem - badly installed?


> Hi,
>
> I am new to this list, so please excuse me and
> give me a hint if this topic was treated here
> before.
>
> I tried some simple C and F77 "hello world"
> programmes to get compiled and linked by "gcc"
> and "gcc -c" + "ld".  The .o was created by
> "gcc -c" without error message, but both direct
> executable creation with "gcc" and linking the
> .o by "ld" failed, giving different error
> messages.  The .log I appenden at the bottom of
> the email.  Does anyone have an idea what is
> going wrong?
>
> Thanks in advance
>
> Enno.
>
> ------------------ start of
log ----------------------------------------
> + cat test_c.c
> /*---------------- test_c.c ----------
start -------------------------*/
> #include <stdio.h>
> main()
>   {
> printf( "%s\n", "Hello world!" );
>   }
> /*---------------- test_c.c ----------
end ---------------------------*/
> + gcc test_c.o
> /PROGS/CYGWIN/USR/BIN/ld: cannot open crt0.o: No such file or
directory
> collect2: ld returned 1 exit status
> + gcc -c test_c.c
> + ld test_c.o
> ld: warning: cannot find entry symbol _mainCRTStartup;
defaulting to 00401000
> test_c.o(.text+0x1b):test_c.c: undefined reference to `__main'
> test_c.o(.text+0x2d):test_c.c: undefined reference to `printf'
> + cat test_f.f
> *----------------- test_f.f ----------
start ---------------------------
>       program testf
>   print*, 'Hello world!'
>   end
> *----------------- test_f.f ----------
end -----------------------------
> + gcc test_f.o
> /PROGS/CYGWIN/USR/BIN/ld: cannot open crt0.o: No such file or
directory
> collect2: ld returned 1 exit status
> + gcc -c test_f.f
> + ld test_f.o
> ld: warning: cannot find entry symbol _mainCRTStartup;
defaulting to 00401000
> test_f.o(.text+0x23):test_f.f: undefined reference to `s_wsle'
> test_f.o(.text+0x3c):test_f.f: undefined reference to `do_lio'
> test_f.o(.text+0x44):test_f.f: undefined reference to `e_wsle'
> test_f.o(.text+0x53):test_f.f: undefined reference to `s_stop'
>
The gcc and g77 commands invoke the correct link and library
specifications, if properly installed.  There is no way that the
ld command by itself will know what to do. crt0.o appears in /lib
in my installation.


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