in reply to Inline CPP

Were there any other errors during the build ?

It's important that you also: 
use Inline CPP => Config =>
     BUILD_NOISY => 1;

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Then check the entire output of the build for a message something like (if not exactly): 
Note (probably harmless): No library found for -lmain

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There are 2 possibilities:
1)If that message is present, then no attempt was made to link to libmain.so.
2)If the message is absent, then libmain.so was found and linked to.

If it's a case of 1), then we need to work out why it was not locatable.

If it's a case of 2), then we need to work out why libmain.so does not resolve that symbol.

Which is it ?

Update: If you decide to add the BUILD_NOISY => 1 config option and re-run the build process again, you'll probably find that it will just use the existing binaries and not compile again - which would be a pointless exercise. So, before rebuilding, remove the existing _Inline/build files for that particular module. (Or add some whitespace to the CPP code ... as long as you do something to make it recompile the CPP code.)

Cheers,
Rob

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Re^2: Inline CPP
by nirf1 (Novice) on May 21, 2008 at 09:52 UTC
    Hi Rob, You are most helpfull and I really appreciate your help. I did as you said : 1. I "make clean" to erase all the compiled objects. 2. I added your BUILD_NOISY flag. 3. I addid a -L directive to the loaction of that lib in a different style (all the directive together seems to work better than separately - I don't know why): 
    use Inline (CPP => 'DATA',
                LIBS => '-L/users/nirf/perlTrials/cNewModule/lib -lmai
+n -L/usr/lib -lstdc++',
                INC => '-I/users/nirf/perlTrials/inlineExample',
                WARNINGS => 0,
                NAME => 'PM_wed',
                VERSION => '0.01',
                BUILD_NOISY => 1,
               );

    [download]
    4.I tried to remove the warnings regarding iostream.h by adding to the parameters the line " ENABLE => STD_IOSTREAM," : 
    use Inline (CPP => 'DATA',
                LIBS => '-L/users/nirf/perlTrials/cNewModule/lib -lmai
+n -L/usr/lib -lstdc++',
                INC => '-I/users/nirf/perlTrials/inlineExample',
                WARNINGS => 0,
                NAME => 'PM_wed',
                VERSION => '0.01',
                BUILD_NOISY => 1,
                ENABLE => STD_IOSTREAM,
               );

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    but it didn't work. do you know why? 5.The new error I get now is as follows. It doesn't find that library (although it says so only in the test phase): 
    
PERL_DL_NONLAZY=1 /usr/bin/perl "-MExtUtils::Command::MM" "-e" "test_h
+arness(0, 'blib/lib', 'blib/arch')" t/*.t
t/1....ok 1/1Had problems bootstrapping Inline module 'PM_wed'
 
Can't load '/users/nirf/perlTrials/PM_wed/blib/arch/auto/PM_wed/PM_wed
+.so' for module PM_wed: libmain.so: cannot open shared object file: N
+o such file or directory at /usr/lib/perl5/5.8.5/i386-linux-thread-mu
+lti/DynaLoader.pm line 230, <DATA> line 1.
 at /usr/lib/perl5/vendor_perl/5.8.5/Inline.pm line 500
 
 
 at t/1.t line 0
INIT failed--call queue aborted, <DATA> line 1.
# Looks like your test died just after 1.
t/1....dubious
        Test returned status 255 (wstat 65280, 0xff00)
        after all the subtests completed successfully
Failed Test Stat Wstat Total Fail  Failed  List of Failed
----------------------------------------------------------------------
+---------
t/1.t        255 65280     1    0   0.00%  ??
Failed 1/1 test scripts, 0.00% okay. 0/1 subtests failed, 100.00% okay
+.
make: *** [test_dynamic] Error 2

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    By the way,the messages I get in the "make" phase seems ok (there is no indication to the error that follows at the next "test" phase) : 
    cp PM_wed.pm blib/lib/PM_wed.pm
/usr/bin/perl -Mblib -MInline=NOISY,_INSTALL_ -MPM_wed -e1 0.01 blib/a
+rch
Starting Build Prepocess Stage
Finished Build Prepocess Stage
 
Starting Build Parse Stage
Finished Build Parse Stage
 
Starting Build Glue 1 Stage
Finished Build Glue 1 Stage
 
Starting Build Glue 2 Stage
Finished Build Glue 2 Stage
 
Starting Build Glue 3 Stage
Finished Build Glue 3 Stage
 
Starting Build Compile Stage
  Starting "perl Makefile.PL" Stage
WARNING: CC is not a known parameter.
Writing Makefile for PM_wed
  Finished "perl Makefile.PL" Stage
 
  Starting "make" Stage
make[1]: Entering directory `/users/nirf/perlTrials/PM_wed/_Inline/bui
+ld/PM_wed'
/usr/bin/perl /usr/lib/perl5/5.8.0/ExtUtils/xsubpp  -typemap /usr/lib/
+perl5/5.8.0/ExtUtils/typemap   PM_wed.xs > PM_wed.xsc && mv PM_wed.xs
+c PM_wed.c
g++ -c  -I/users/nirf/perlTrials/PM_wed -I/users/nirf/perlTrials/inlin
+eExample -D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBUGGING -
+fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_
+OFFSET_BITS=64 -I/usr/include/gdbm -O2 -march=i386 -mcpu=i686 -g   -D
+VERSION=\"0.01\" -DXS_VERSION=\"0.01\" -fPIC "-I/usr/lib/perl5/5.8.0/
+i386-linux-thread-multi/CORE"   PM_wed.c
In file included from /usr/include/c++/3.2.2/backward/iostream.h:31,
                 from PM_wed.xs:2:
/usr/include/c++/3.2.2/backward/backward_warning.h:32:2: warning: #war
+ning This file includes at least one deprecated or antiquated header.
+ Please consider using one of the 32 headers found in section 17.4.1.
+2 of the C++ standard. Examples include substituting the <X> header f
+or the <X.h> header for C++ includes, or <sstream> instead of the dep
+recated header <strstream.h>. To disable this warning use -Wno-deprec
+ated.
Running Mkbootstrap for PM_wed ()
chmod 644 PM_wed.bs
rm -f blib/arch/auto/PM_wed/PM_wed.so
LD_RUN_PATH="/usr/lib:/users/nirf/perlTrials/cNewModule/lib" gcc  -sha
+red -L/usr/local/lib PM_wed.o  -o blib/arch/auto/PM_wed/PM_wed.so   -
+lstdc++ -L/users/nirf/perlTrials/cNewModule/lib -lmain -L/usr/lib -ls
+tdc++
chmod 755 blib/arch/auto/PM_wed/PM_wed.so
cp PM_wed.bs blib/arch/auto/PM_wed/PM_wed.bs
chmod 644 blib/arch/auto/PM_wed/PM_wed.bs
make[1]: Leaving directory `/users/nirf/perlTrials/PM_wed/_Inline/buil
+d/PM_wed'
  Finished "make" Stage
 
  Starting "make install" Stage
make[1]: Entering directory `/users/nirf/perlTrials/PM_wed/_Inline/bui
+ld/PM_wed'
Installing /users/nirf/perlTrials/PM_wed/blib/arch/auto/PM_wed/PM_wed.
+so
Installing /users/nirf/perlTrials/PM_wed/blib/arch/auto/PM_wed/PM_wed.
+bs
Files found in blib/arch: installing files in blib/lib into architectu
+re dependent library tree
Writing /users/nirf/perlTrials/PM_wed/blib/arch/auto/PM_wed/.packlist
make[1]: Leaving directory `/users/nirf/perlTrials/PM_wed/_Inline/buil
+d/PM_wed'
  Finished "make install" Stage
 
  Starting Cleaning Up Stage
  Finished Cleaning Up Stage
 
Finished Build Compile Stage

    [download]
    Thanks, Nir
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      Hi Rob, I managed to solve the linkage problem. I still have the problem with ENABLE => STD_IOSTREAM - I still need help in that aspect). Apparently in the test phase The LD_LIBRARY_PATH should have the path to the libmain.so (my external libraries). and it is not sufficient to have that path in the pm file (in the LIBS -L option in 
      use Inline (CPP => 'DATA',
                LIBS => '-L/users/nirf/perlTrials/cNewModule/lib -lmai
+n -L/usr/lib -lstdc++',
                INC => '-I/users/nirf/perlTrials/inlineExample',
                WARNINGS => 0,
                NAME => 'PM_wed',
                VERSION => '0.01',
                BUILD_NOISY => 1,
               );

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      ) Thanks, Nir
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[d/l]
        Hi All, I am trying to call from perl script to a function that is defined inside another perl module. That module is an Inline::CPP, and the function I call to is a cpp function. The function gets a pointer to an int and needs to fill it: 
         int add_nir(int x, int y, int* ref_int )

        [download]
        I am trying to call that function with : 
         my $test;
  add_nir(1,4,\$test);

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        but I get the following error : 
        Can't locate auto/PM_wed/add_nir.al in @INC (@INC contains: ...

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        any other fuction (that doesn't receives a pointer) in the cpp part that is called from the perl script is propogated and executed correctly. Can someone please tell me what I did wrong? Thanks, Nir
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