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;
Awesome. Now we need to check how libippi had exported its
symbols. :-) For example, to check the symbols from the libfoo.a
sent in my previous message:
$ objdump -t libfoo.a
In archive libfoo.a:
libfoo.o: file format pe-i386
SYMBOL TABLE:
[ 0](sec -2)(fl 0x00)(ty 0)(scl 103) (nx 1) 0x00000000 foo.c
File
*[ 2](sec 1)(fl 0x00)(ty 20)(scl 2) (nx 1) 0x00000000 _bar*
AUX tagndx 0 ttlsiz 0x0 lnnos 0 next 0
[ 4](sec 1)(fl 0x00)(ty 0)(scl 3) (nx 1) 0x00000000 .text
AUX scnlen 0xa nreloc 1 nlnno 0
[ 6](sec 2)(fl 0x00)(ty 0)(scl 3) (nx 1) 0x00000000 .data
AUX scnlen 0x0 nreloc 0 nlnno 0
[ 8](sec 3)(fl 0x00)(ty 0)(scl 3) (nx 1) 0x00000000 .bss
AUX scnlen 0x0 nreloc 0 nlnno 0
[ 10](sec 4)(fl 0x00)(ty 0)(scl 3) (nx 1) 0x00000000 .rdata
AUX scnlen 0x4 nreloc 0 nlnno 0
[ 12](sec 5)(fl 0x00)(ty 0)(scl 3) (nx 1) 0x00000000 .rdata$zzz
AUX scnlen 0x2a nreloc 0 nlnno 0
[ 14](sec 6)(fl 0x00)(ty 0)(scl 3) (nx 1) 0x00000000 .eh_frame
AUX scnlen 0x38 nreloc 1 nlnno 0
Notice the _bar, now you need to check if libippi exported it as
ippithreshold_ltvalgtval_8u_c1ir, _ippithreshold_ltvalgtval_8u_c1ir or
ipp__ippithreshold_ltval_8u_c1ir. :-)
I forgot a question, could you send your ippi .a files for us? If so,
I can try a test here. :-)
Yes of course: I have uploaded them here
http://uschovna.zoznam.sk/download?code=1342688547227-EZyyeVzToDVVkkbJNCbN
But be aware of that I am on Windows, not Linux (Despite this I have
added to ZIP also .a files as they are installed by Intel into direcotry
"Linux". In direcory "Windows" are installed only .lib files).
If I can repeat my question: Can I use ".a" libraries also on Windows ?
If not can I use ".lib" created by C/C++ (I do not know how they are build)
Thank you
-Laco.
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