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Question:

Chilkat VC++ libs compiled/linked on QT 5.4.1 on Windows

Mar 19 '15 at 13:00

I get these link errors: 

Os Windows 8.1 64 bit
Qt 5.4.1 MSVC 2013 OpenGL 32 bit
chilkat 9.5.0-x86-vc12


---.pro
INCLUDEPATH += C:/chilkat/include
DEPENDPATH += C:/chilkat/include
LIBS += -Lc:/chilkat/libs -lChilkatDbg


Code: #include <ckzip.h>
         CkZip zip


Error
ChilkatDbgDll.lib(Psdk.obj):-1: error: LNK2019: unresolved external symbol 
impGetUserNameA@8 referenced in function "public: static void cdecl Psdk::
getUsername(class chilkat::StringBuffer &)" (?
getUsername@Psdk@@SAXAAVStringBuffer@chilkat@@@Z)
ChilkatDbgDll.lib(Psdk.obj):-1: error: LNK2019: unresolved external symbol 
impRegCreateKeyExA@36 referenced in function "public: static long cdecl 
PsdkWin32::regCreateKeyEx(struct HKEY ,char const ,unsigned int,char const 
,unsigned int,unsigned long,struct _SECURITY_ATTRIBUTES ,struct HKEY * ,
unsigned long )" (?
regCreateKeyEx@PsdkWin32@@SAJPAUHKEY@@PBDI1IKPAU_SECURITY_ATTRIBUTES@@PAPAU2@PAK@Z)
ChilkatDbgDll.lib(Psdk.obj):-1: error: LNK2019: unresolved external symbol 
impRegOpenKeyExA@20 referenced in function "public: static long cdecl 
PsdkWin32::regOpenKeyEx(struct HKEY ,char const ,unsigned int,unsigned long,
struct HKEY * )" (?regOpenKeyEx@PsdkWin32@@SAJPAUHKEY@@PBDIKPAPAU2@@Z)
ChilkatDbgDll.lib(Psdk.obj):-1: error: LNK2019: unresolved external symbol 
impCryptAcquireContextA@20 referenced in function "public: static int 
cdecl PsdkWin32::cryptAcquireContext(unsigned long ,char const ,char const 
,unsigned int,unsigned int)" (?cryptAcquireContext@PsdkWin32@@SAHPAKPBD1II@Z)
ChilkatDbgDll.lib(Entropy.obj):-1: error: LNK2019: unresolved external symbol 
impCryptReleaseContext@8 referenced in function "public: static bool 
cdecl Entropy::getRandomBytes2(int,unsigned char *)" (?
getRandomBytes2@Entropy@@SA_NHPAE@Z)
ChilkatDbgDll.lib(Entropy.obj):-1: error: LNK2019: unresolved external symbol 
impCryptGenRandom@12 referenced in function "public: static bool cdecl 
Entropy::getRandomBytes2(int,unsigned char *)" (?
getRandomBytes2@Entropy@@SA_NHPAE@Z)
debugChilkatTest.exe:-1: error: LNK1120: 6 unresolved externals

Answer

The unresolved externals are VC++ runtime library functions. They require additional Microsoft VC++ libs to be linked. You can find out which MSVC library contains the given Platform SDK function by doing this:

  1. Google the function name to find the MSVC reference doc for the function. For example, Google "RegCreateKeyEx" or "CryptGenRandom".
  2. Find the "Requirements" section near the bottom of the documentation web page. For example, for RegCreateKeyEx, the library is Advapi32.lib
  3. To save you time, the other libraries will likely be: crypt32.lib, ws2_32.lib, and dnsapi.lib

Add these libs to be linked with your QT app...