.lib mystery and headache [modified]

JackPuppy

the command line of linker in project-property contains:kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib however it doesn't contain "boost_regex-vc80-mt-1_37.lib" which I used to use boost_regex-vc80-mt-1_37.dll and the latter one contains regex_search() function and so on. And I find I can use regex_search,smatch in My Application soomthly. All I do in my source code is including Two head files. I am wondering how does the complier locate "boost_regex-vc80-mt-1_37.lib"? I know there is only symbols(variable names,function names, etc)in .lib, even the complier gain the .lib, how the linker gain the corespondent .dll's name. Can somebody tell me? Thanks a lot.

modified on Friday, March 6, 2009 3:08 PM

led mike · modified on Friday, March 6, 2009 3:08 PM

JackPuppy wrote:

smatch in My Application soomthly

I have no idea what that means

JackPuppy wrote:

how the linker gain the corespondent .dll's name.

Perhaps they used this[^]?

Eytukan · modified on Friday, March 6, 2009 3:08 PM

In the linker option, you need to give the path of your boost lib. Open your project properties dialog,

Config&properties->Linker->General Options->AddtitionalLibrarayDirectories[//Give the path of your libs here]

Then in Input option,

Likner->Input->AdditionalDependencies[// Here specify your boos lib] //Also you can give absolute paths here.

Alternatively, In your code you can use

#pragma comment(lib,"Absolute_path_to_your_lib")

JackPuppy wrote:

I know there is only symbols(variable names,function names, etc)in .lib, even the complier gain the .lib, how the linker gain the corespondent .dll's name.

Good question, but unfortunately the lib doesn't tell you about location details of your DLL. The lib just contains the exported symbols of the dll. It just talks about it. So when compiling you don't need the dll. Just a lib reference is enough. But at run time, you need to keep your dll along with your .exe or in system folders.

He never answers anyone who replies to him. I've taken to calling him a retard, which is not fair to retards everywhere.-Christian Graus

JackPuppy

thanks pal! however I didn't "Likner->Input->AdditionalDependencies[// Here specify your boos lib] //Also you can give absolute paths here", neither "#pragma comment(lib,"Absolute_path_to_your_lib". But I can use regex_search(), and why? it's confusing?(I did include the lib's directory in project property dialog). Further the lib seems to contain at least the name of the dll, however see this lib codes I have dumpbin from a lib:

Dump of file E:Visual Studio 2005\Projects\DLLexperiment\debug\dllshiyan.lib

File Type: LIBRARY

Archive member name at 8: /
49B21595 time/date Sat Mar 07 14:35:01 2009
uid
gid
0 mode
7A size
correct header end

5 public symbols

  17E \_\_IMPORT\_DESCRIPTOR\_dllshiyan
  3B0 \_\_NULL\_IMPORT\_DESCRIPTOR
  4EA dllshiyan\_NULL\_THUNK\_DATA
  642 \_\_imp\_\_add
  642 \_add

Archive member name at BE: /
49B21595 time/date Sat Mar 07 14:35:01 2009
uid
gid
0 mode
84 size
correct header end

4 offsets

    1      17E
    2      3B0
    3      4EA
    4      642

5 public symbols

    1 \_\_IMPORT\_DESCRIPTOR\_dllshiyan
    2 \_\_NULL\_IMPORT\_DESCRIPTOR
    4 \_\_imp\_\_add
    4 \_add
    3 dllshiyan\_NULL\_THUNK\_DATA

Archive member name at 17E: dllshiyan.dll/
49B21595 time/date Sat Mar 07 14:35:01 2009
uid
gid
0 mode
1F6 size
correct header end

FILE HEADER VALUES
14C machine (x86)
3 number of sections
49B21595 time date stamp Sat Mar 07 14:35:01 2009
110 file pointer to symbol table
8 number of symbols
0 size of optional header
100 characteristics
32 bit word machine

SECTION HEADER #1
.debug$S name
0 physical address
0 virtual address
44 size of raw data
8C file pointer to raw data (0000008C to 000000CF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
42100040 flags
Initialized Data
Discardable
1 byte align
Read Only

SECTION HEADER #2
.idata$2 name
0 physical address
0 virtual address
14 size of raw data
D0 file pointer to raw

JackPuppy

there isn't(or I couldn't find it out)plus,this is really very confused reading, can you give me some acrtiles on what each sentence in this lib mean? thanks!

Eytukan

This[^] may help you. But I don't understand, why do you need to check them. You may want to DUMPBIN the contents of the DLL rather?

He never answers anyone who replies to him. I've taken to calling him a retard, which is not fair to retards everywhere.-Christian Graus