using libcurl in QT with Mingw in Windows

[georgep]

Heh, i wished I have seen your reply earlyer (-lcurldll)
If linking -lcurl i will now get a LOT of errors about unknown symbols that appear related to ssl
how do I link with openssl ?

ps: how could I say print the contents of a curl reply (a page) in a QLabel (or something like that, any idea?)

[tpf80]

You might want to take a look at http://curl.haxx.se/docs/libs.html to see what dependencies cURL has.

In order to use output from curl to something useful such as a QString:

QString stuffFromcURL;
 
struct MemoryStruct chunk;
chunk.memory=NULL; 
chunk.size = 0;
//.... setting options and other stuff
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
//.... setting more optons
//exec curl
curl_easy_perform(curl_handle);
stuffFromcURL = QString::fromUtf8 (chunk.memory);

QString stuffFromcURL;

struct MemoryStruct chunk;
chunk.memory=NULL; 
chunk.size = 0;
//.... setting options and other stuff
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
//.... setting more optons
//exec curl
curl_easy_perform(curl_handle);
stuffFromcURL = QString::fromUtf8 (chunk.memory);

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[jacek]

how do I link with openssl ?

The same way as you link with curl (-lssl), but you need to get OpenSSL libraries first.

[patrik08]

on pro file ....

win32 {
HEADERS +=  oswin32.h
LIBS += C:/msys/1.0/bin/lib/libz.a
LIBS += C:/msys/1.0/bin/lib/libcurl.dll.a
LIBS += C:/msys/1.0/bin/lib/libcurl.a
LIBS += ../all_os_lib/libexslt.a
LIBS += ../all_os_lib/libxml2.a
LIBS += ../all_os_lib/libxslt.a
 
RC_FILE = win.rc
INCLUDEPATH += C:\MinGW\include  C:\msys\1.0\include C:\msys\1.0\home\xml\include
DEPENDPATH += include
DESTDIR	= ../installer
}

win32 {
HEADERS +=  oswin32.h
LIBS += C:/msys/1.0/bin/lib/libz.a
LIBS += C:/msys/1.0/bin/lib/libcurl.dll.a
LIBS += C:/msys/1.0/bin/lib/libcurl.a
LIBS += ../all_os_lib/libexslt.a
LIBS += ../all_os_lib/libxml2.a
LIBS += ../all_os_lib/libxslt.a

RC_FILE = win.rc
INCLUDEPATH += C:\MinGW\include  C:\msys\1.0\include C:\msys\1.0\home\xml\include
DEPENDPATH += include
DESTDIR	= ../installer
}

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i build curl on msys from mingw
From my first qt project 2 Year a go
http://sourceforge.net/project/scree...roup_id=167757
https://qtexcel-xslt.svn.sourceforge...l-xslt/qexcel/

Get remote file by curl i easy to write , whitout signal or other ..

search on code:
https://qtexcel-xslt.svn.sourceforge...rc/_config.cpp
/* Warning get local file contents or remote file contents by curl */
QString Config::file_get_contents(QString fullFileName)

[georgep]

in my .pro file i have

LIBS += -L"C:\Documents and Settings\Administrator\Desktop\bob\lib" -lcurl -lssl

and when i make i get thousands of errors like:

C:\Documents and Settings\Administrator.BOB\Desktop\bob\lib/libssl.a(t1_enc.o):t1_enc.c.text+0x1181): undefined reference to `HMAC_CTX_cleanup'

I am guessing that it needs hmac.h (and all the other headers from the openssl directory).
How do I #include ALL those ?

Thank you very much for your replyes!

[Spider_xp]

in my .pro file i just used

LIBS += -llibcurl

LIBS += -llibcurl

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rather than

LIBS += -lcurl

LIBS += -lcurl

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and BINGO! all compiles and works without errors

[ChrisW67]

Congratulations. Please do not reawaken 6 year old threads after 3 years of dormancy to add nothing of value.