cellist has asked for the wisdom of the Perl Monks concerning the following question:

I'm playing around with the complier backend, which produces a C program from the perl code. I started out with a very simple "hello world" program, just to see if I could get it to work as a compiled executable C program. When I run the output through the C compiler, I get a bunch of errors like "Linker error undefined reference to `Perl_get_context'". Presumably these are C functions. Any idea where these might be located?

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Re: B::C - Perl compiler's C backend
by jaldhar (Vicar) on Jul 28, 2004 at 02:53 UTC

    They are located in a shared library. You can get the full name of the library like this: 

    perl -MConfig -e 'print $Config{libperl}, "\n"'

    [download]
    Perl will search for the library in $Config{libspath}.

    I don't know which operating system you are using but on Debian GNU/Linux you need to install the libperl-dev package to get the libperl.so symlink needed for the perl C backend to work.

    --
    જલધર

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[d/l]
      This is a follow-on to my previous question about using B::C to turn a perl program into C so it can be compiled. I hope this gets merged into the thread of my previous question and the replies that have been posted. I'm running on Windows/XP. 1. I found a script all cc_harness and ran it. It exec'd the following command: C:\Documents and Settings\myname\Perl>perl cc_harness cl -nologo -Gf -W3 -MD -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -IC:\Perl\lib/CORE -nologo -nodefaultlib -release -libpath:"C:\Perl\lib\CORE" -machine:x86 C:\Perl\lib/CORE/perl58.lib oldnames.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib netapi32.lib uuid.lib wsock32.lib mpr.lib winmm.lib version.lib odbc32.lib odbccp32.lib msvcrt.lib 2. I found a file in perl/lib/auto/b/c called C.DLL, which looks like it has a couple of the referenced functions that the linker was unable to include and it also refers to a perl58.dll. (This file is not readable with a text editor; I'm using a freeware program called filealyzer.) I need to somehow tell the C compiler to pick up these libraries, or deriatives of them, for the link step. Do we have any Windows guys hanging around here?
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Re: B::C - Perl compiler's C backend
by Zaxo (Archbishop) on Jul 28, 2004 at 02:54 UTC

    You need to link to libperl.so or libperl.a, which are in the lib/perl5/$VERSION/CORE directory.

    After Compline,
    Zaxo

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