On Thu, Jan 22, 2004 at 09:43:31PM +1100, Ken Foskey wrote:
>
> I have grabbed an ini file parser from the net and the Makefile creates
> libiniparser.a and I can compile and run the test program that compiles
> and links with gcc. I have modified the headed to include extern "C" {
> to the header file. When I link using the individual .o files it links
> fine, but...
>
> g++ -c -g -Wall -I../include -I../iniparser/src afp2text.cpp
>
> g++ -c -g -Wall -I../include -I../iniparser/src codeconvert.cpp
>
> g++ -g -L../iniparser -liniparser afp2text.o codeconvert.o \
> -o afp2text
> afp2text.o(.text+0x2c6): In function `main':
> /data/program/afp2text/afp2text.cpp:151: undefined reference to
> `iniparser_load'
> collect2: ld returned 1 exit status
> make: *** [afp2text] Error 1
>
> Any suggestions...
The (GNU) linker usually only links in object files from libraries if
the object file provides some symbols which it has seen before.
As a general rule, always list libraries as last options on the
command line, in the order by which they depend on each other:
g++ -g -L../iniparser afp2text.o codeconvert.o -liniparser
> Problem # 2
>
> (gdb) run
> Starting program: /data/program/afp2text/afp2text
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x08048bbb in main (argc=1, argv=0xbffffbe4) at afp2text.cpp:99
> 99 char parm_filename[ 255 ] = "/apps/parms/afp/definition";
> (gdb)
>
> This is the very first line of the program. I even convert back to C
> code, same result. Any suggestions on what to try would be appreciated.
I suppose a simple hello world C++ program runs fine? Is this also
related to the iniparser library? Can you supply a simple, runnable
example which exhibits the error? Besides, I'd say without seeing any
real code and a bit more information (command line arguments, GCC
version, system information) it's quite hard to give advice here.
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