Xapian devel - Feb 2014 - 回复： 回复： A beginnerin "Posting list encoding improvements"

In the past hours, I set up a Debian in VBox, and do the same things as I did in
Ubuntu, but finally I succeed,


hurricanetong at debian:~/WorkSpace$ ls -l database
??? 16
-rw-r--r-- 1 hurricanetong hurricanetong  0  2? 13 13:41 flintlock
-rw-r--r-- 1 hurricanetong hurricanetong 28  2? 13 13:41 iamchert
-rw-r--r-- 1 hurricanetong hurricanetong 13  2? 13 13:41 postlist.baseA
-rw-r--r-- 1 hurricanetong hurricanetong  0  2? 13 13:41 postlist.DB
-rw-r--r-- 1 hurricanetong hurricanetong 13  2? 13 13:41 record.baseA
-rw-r--r-- 1 hurricanetong hurricanetong  0  2? 13 13:41 record.DB
-rw-r--r-- 1 hurricanetong hurricanetong 13  2? 13 13:41 termlist.baseA
-rw-r--r-- 1 hurricanetong hurricanetong  0  2? 13 13:41 termlist.DB



My Ubuntu is 12.04, 32bit. Maybe I did something wrong to it.


And, pay my sincere thanks to all of you, thanks for your patient guide.
------------------
HurricaneTong,Second Year Undergraduate,
School of Computer Science,
Fudan University, China.


 




------------------ ???? ------------------
???: "Olly Betts";<olly at survex.com>;
????: 2014?2?13?(???) ??1:32
???: "Hurricane Tong"<zhangshangtong.cpp at qq.com>; 
??: "Xapian Development"<xapian-devel at lists.xapian.org>; 
??: Re: [Xapian-devel]  ???  A beginnerin "Posting list encoding
improvements"



On Thu, Feb 13, 2014 at 10:34:00AM +0800, Hurricane Tong
wrote:
> I think what i did is the same with you except i use make rather than
> make -sj8, and I did as root.
It's better to create yourself a user for development work and do as
little as possible as root.  The root user has the rights to do almost
anything, so you can accidentally do a lot of damage (e.g.  "rm *" in
the wrong directory) and a malicious program can do a lot more damage
too.

But compiling as root shouldn't make a difference here.
> root at hurricanetong-VirtualBox:/home/hurricanetong/workspace# g++
`xapian-config --cxxflags --libs` demo2.cpp
> /tmp/ccRXtBxB.o: In function `main':
> demo2.cpp:(.text+0x4a): undefined reference to
`Xapian::WritableDatabase::WritableDatabase(std::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&,
int)'
> demo2.cpp:(.text+0x73): undefined reference to
`Xapian::WritableDatabase::~WritableDatabase()'
> demo2.cpp:(.text+0x98): undefined reference to
`Xapian::WritableDatabase::~WritableDatabase()'
> collect2: ld ?? 1
I don't know why this isn't working, as it does for me and others.

Passing the libs last might be worth trying:

g++ `xapian-config --cxxflags` demo2.cpp `xapian-config --libs`

You can also compile with -v to see more details of the process:

g++ -v `xapian-config --cxxflags --libs` demo2.cpp

What version of Ubuntu have you installed?

Cheers,
    Olly
.
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