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Re: [Question #234832]: compilation error

 

Question #234832 on rohc changed:
https://answers.launchpad.net/rohc/+question/234832

    Status: Needs information => Open

manish shivare gave more information on the question:
pardon me for my silly mistake. this is the log after running 2nd Version.
manish@manish-HP-630-Notebook-PC:~$ cat test_pcap.c
#include <pcap/pcap.h>
int main(int argc, char *argv[])
{
pcap_t *handle;
handle = pcap_open_dead(DLT_LINUX_SLL, 5);
pcap_close(handle);
return 0;
}
manish@manish-HP-630-Notebook-PC:~$ gcc -Wl,--verbose -o test_pcap -lpcap
test_pcap.c
GNU ld (GNU Binutils for Ubuntu) 2.22.90.20120924
  Supported emulations:
   elf_i386
   i386linux
   elf32_x86_64
   elf_x86_64
   elf_l1om
   elf_k1om
using internal linker script:
==================================================
/* Script for -z combreloc: combine and sort reloc sections */
OUTPUT_FORMAT("elf32-i386", "elf32-i386",
          "elf32-i386")
OUTPUT_ARCH(i386)
ENTRY(_start)
SEARCH_DIR("/usr/i686-linux-gnu/lib32"); SEARCH_DIR("=/usr/local/lib32");
SEARCH_DIR("=/lib32"); SEARCH_DIR("=/usr/lib32");
SEARCH_DIR("=/usr/local/lib/i386-linux-gnu");
SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR("=/lib/i386-linux-gnu");
SEARCH_DIR("=/lib"); SEARCH_DIR("=/usr/lib/i386-linux-gnu");
SEARCH_DIR("=/usr/lib");
SECTIONS
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       actually link against crtbegin.o; the
       linker won't look for a file to match a
       wildcard.  The wildcard also means that it
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    KEEP (*crtbegin.o(.ctors))
    KEEP (*crtbegin?.o(.ctors))
    /* We don't want to include the .ctor section from
       the crtend.o file until after the sorted ctors.
       The .ctor section from the crtend file contains the
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}


==================================================
attempt to open
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/crt1.o succeeded
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/crt1.o
attempt to open
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/crti.o succeeded
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/crti.o
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/crtbegin.o succeeded
/usr/lib/gcc/i686-linux-gnu/4.8/crtbegin.o
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libpcap.so failed
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libpcap.a failed
attempt to open
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libpcap.so succeeded
-lpcap (/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libpcap.so)
attempt to open /tmp/cc0MERjt.o succeeded
/tmp/cc0MERjt.o
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libgcc.so failed
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libgcc.a succeeded
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libgcc_s.so succeeded
-lgcc_s (/usr/lib/gcc/i686-linux-gnu/4.8/libgcc_s.so)
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libc.so failed
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libc.a failed
attempt to open
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libc.so succeeded
opened script file
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libc.so
opened script file
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libc.so
attempt to open /lib/i386-linux-gnu/libc.so.6 succeeded
/lib/i386-linux-gnu/libc.so.6
attempt to open /usr/lib/i386-linux-gnu/libc_nonshared.a succeeded
(/usr/lib/i386-linux-gnu/libc_nonshared.a)elf-init.oS
attempt to open /lib/i386-linux-gnu/ld-linux.so.2 succeeded
/lib/i386-linux-gnu/ld-linux.so.2
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libgcc.so failed
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libgcc.a succeeded
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/libgcc_s.so succeeded
-lgcc_s (/usr/lib/gcc/i686-linux-gnu/4.8/libgcc_s.so)
attempt to open /usr/lib/gcc/i686-linux-gnu/4.8/crtend.o succeeded
/usr/lib/gcc/i686-linux-gnu/4.8/crtend.o
attempt to open
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/crtn.o succeeded
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/crtn.o
ld-linux.so.2 needed by /lib/i386-linux-gnu/libc.so.6
found ld-linux.so.2 at /lib/i386-linux-gnu/ld-linux.so.2
/tmp/cc0MERjt.o: In function `main':
test_pcap.c:(.text+0x19): undefined reference to `pcap_open_dead'
test_pcap.c:(.text+0x29): undefined reference to `pcap_close'
collect2: error: ld returned 1 exit status

sorry for giving trouble to you. but this rohc library is require for my
project.
thank you


On Mon, Sep 9, 2013 at 12:51 PM, Didier Barvaux <
question234832@xxxxxxxxxxxxxxxxxxxxx> wrote:

> Question #234832 on rohc changed:
> https://answers.launchpad.net/rohc/+question/234832
>
>     Status: Open => Needs information
>
> Didier Barvaux requested more information:
> Hello,
>
> Thanks for the output. You seem however to have mistyped the command:
>
> Wrong: gcc -Wl,--verbose -o test_pca-lpcap test_pcap.c
> Right:   gcc -Wl,--verbose -o test_pcap -lpcap test_pcap.c
>
> The first version makes the -lpcap option part of the binary name. It
> could explain the error you encounter.
> Please try again with the 2nd version.
>
> Regards,
> Didier
>
> --
> You received this question notification because you are a member of ROHC
> Team, which is an answer contact for rohc.
>
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