gcc undefined reference to

Question

I'm running..

gcc -c -I/usr/vt/sample ttssample.c
gcc -L. -lttsapi ttssample.o -o ttsample

and I'm getting the following error...

ttssample.o: In function `_TTSFile':
ttssample.c:(.text+0x352): undefined reference to `TTSRequestFile'
ttssample.o: In function `_TTSFileEx':
ttssample.c:(.text+0x5e0): undefined reference to `TTSRequestFileEx'
ttssample.o: In function `_TTSBuffer':
ttssample.c:(.text+0x833): undefined reference to `_TTSRequestBuffer'
ttssample.o: In function `_TTSBufferEx':
ttssample.c:(.text+0xabd): undefined reference to `_TTSRequestBufferEx'
ttssample.o: In function `_TTSBuffering_cont':
ttssample.c:(.text+0xcbf): undefined reference to `_TTSRequestBuffer'
ttssample.o: In function `_TTSBuffering_stop':
ttssample.c:(.text+0xf2d): undefined reference to `_TTSRequestBuffer'
ttssample.o: In function `_TTSBuffering_SSML':
ttssample.c:(.text+0x122b): undefined reference to `_TTSRequestBufferSSMLEx'   
ttssample.o: In function `_TTSStatus':
ttssample.c:(.text+0x157b): undefined reference to `TTSRequestStatus'
collect2: ld returned 1 exit status

and TTSRequestFile is in the lib header but it has DllExport on the front of it which I'm wondering is the cause of my error? Any help much appreciated.

DllExport int TTSRequestFile(char *szServer, int nPort, char *pText, int nTextLen, char *szSaveDir, char *szSaveFile, int nSpeakerID, int nVoiceFormat);

Answer 1

Your link command is wrong. Libraries should be specified at the end of the command:

gcc ttssample.o -o ttsample -L. -lttsapi