Dňa 14.3.2017 o 15:57 silvioprog napísal(a):
On Tue, Mar 14, 2017 at 9:30 AM, LacaK <la...@zoznam.sk
<mailto:la...@zoznam.sk>> wrote:
Hi,
I have C/C++ librarby (".lib" for Windows and ".a" for Linux) from
Intel IPP package (they distribute ".lib" and also ".dll" for
Windows and ".a" for Linux)
Can I link in FPC (on Windows) at compile time to this ".lib"
versions ? Or only possible way is link at runtime using ".dll"
(and distribute DLLs with my EXE)?
(I guess, that FPC can not link to libraries not created in FPC
itself. So format of supplied ".lib" is not compatible with what
FPC expects)
I am trying do something like:
{$linklib libippi}
function ippiThreshold_LTValGTVal_8u_C1IR(pSrcDst: PIpp8u;
srcDstStep: int;
roiSize: IppiSize; thresholdLT: Ipp8u; valueLT: Ipp8u;
thresholdGT: Ipp8u;
valueGT: Ipp8u): IppStatus; external; // 'ippi.dll';
(In Project Options I have path to libippi.a in -Fl)
But I get error: test_IPP.lpr(24,1) Error: Undefined symbol:
IPP_IPPITHRESHOLD_LTVALGTVAL_8U_C1IR$PIPP8U$LONGINT$IPPISIZE$BYTE$BYTE$BYTE$BYTE$$IPPSTATUS
test 1: are you on win32? If so, did you try using prefix "_"? eg:
function _ippiThreshold_LTValGTVal_8u_C1IR(pSrcDst: PIpp8u;
srcDstStep: int;
roiSize: IppiSize; thresholdLT: Ipp8u; valueLT: Ipp8u;
thresholdGT: Ipp8u;
valueGT: Ipp8u): IppStatus; external;
here I get (without {$linklib}):
Error: Undefined symbol:
IPP__IPPITHRESHOLD_LTVAL_8U_C1IR$PIPP8U$LONGINT$IPPISIZE$BYTE$BYTE$$IPPSTATUS
test 2: put the library implementation below function declaration, eg:
function _ippiThreshold_LTValGTVal_8u_C1IR(pSrcDst: PIpp8u;
srcDstStep: int;
roiSize: IppiSize; thresholdLT: Ipp8u; valueLT: Ipp8u;
thresholdGT: Ipp8u;
valueGT: Ipp8u): IppStatus; external;
{$linklib libippi}
here I get:
Error: Undefined symbol:
IPP__IPPITHRESHOLD_LTVAL_8U_C1IR$PIPP8U$LONGINT$IPPISIZE$BYTE$BYTE$$IPPSTATUS
(same error if I add: {$linklib ippi} or {$linklib libippi} ... ippi.lib
and libippi.a are in directory where -Fl points)
fix 1: check which convention your library was compiled,
I think it is stdcall and I have this calling convention there (extdecl
is macro: {$DEFINE extdecl:=stdcall} ):
function _ippiThreshold_LTVal_8u_C1IR(pSrcDst: PIpp8u;srcDstStep:
int; roiSize: IppiSize; threshold: Ipp8u; value: Ipp8u): IppStatus;
extdecl; external;
-Laco.
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