error LNK 2001 in visual C++ 6.0

sindhumahe

hi, i have a .mak file while has four depencies(libraries- libgroupsock.lib, libusageenvironment.lib,libbasicusageenv.lib and liblivemedia.lib) but on building the .mak file , i am facing the following problem. how to resolve this error. if the libraries are to be added , how and where to add them..? kindly help me. libgroupsock.lib(Groupsock.obj) : error LNK2001: unresolved external symbol _security_cookie

Eugen Podsypalnikov

Probably you will must determinate what library does provide the function(?) security_cookie and then include its usage... :)

virtual void BeHappy() = 0;

sindhumahe

by "include in usage" waht do u mean ? just add the path in the include files?

sindhumahe

kindly help me. i am doing a project regarding rtsp client and i am a new bie to VC 6.0

Eugen Podsypalnikov

No, include the lib of the unresolved symbol to the linking process. It could be perform in a .cpp file as following too :) : #pragma comment(lib, "NameOfLibOfUnresolvedSymbol.lib")

virtual void BeHappy() = 0;

sindhumahe

oh thanks a lot. but mine is a .mak file . while building it i am facing such errors. how to link the libraries to the .mak file? any commands available?

Eugen Podsypalnikov

Probably you could extend your line by the needed lib :) : libraries- libgroupsock.lib, libusageenvironment.lib,libbasicusageenv.lib and liblivemedia.lib, NEEDED.lib

virtual void BeHappy() = 0;

Eugen Podsypalnikov

Please observe how to include some libraries to the link process :) :

CC= cl
#DEFS= -nologo -DSTRICT -G3 -Ow -W3 -Zp -Tp
DEFS= -nologo -G3
PROGNAME= foo.exe
LINKER=link -nologo

INCLUDES= -I.

don't define -DSYS_WIN32.. win2k complains

DEFINES= $(INCLUDES) $(DEFS) -DWINNT=1

CFLAGS= $(DEFINES)
GUIFLAGS=user32.lib gdi32.lib winmm.lib comdlg32.lib comctl32.lib
WINSOCK_LIB=wsock32.lib
LIBS=$(WINSOCK_LIB) $(GUIFLAGS)
RC=rc
RCVARS=-r -DWIN32

SRCS = foo.c main.c

OBJS = foo.obj main.obj

.c.obj:
$(CC) $(CFLAGS) -c $< -Fo$@

all: $(PROGNAME)

$(PROGNAME) : $(OBJS)
$(LINKER) $(OBJS) /OUT:$(PROGNAME) $(LIBS)

clean:
del $(OBJS) $(PROGNAME) core

virtual void BeHappy() = 0;

sindhumahe

ya got it. but in my make file there is not option for including the libraries. well i paste my makefile here.it is still giving the same errors "libgroupsock.lib(Groupsock.obj) : error LNK2001: unresolved external symbol ___security_cookie" INCLUDES = -I../UsageEnvironment/include -I../groupsock/include -I../liveMedia/include -I../BasicUsageEnvironment/include ##### Change the following for your environment: # Comment out the following line to produce Makefiles that generate debuggable code: # NODEBUG=1# The following definition ensures that we are properly matching # the WinSock2 library file with the correct header files. # (will link with "ws2_32.lib" and include "winsock2.h" & "Ws2tcpip.h") TARGETOS = WINNT # If for some reason you wish to use WinSock1 instead, uncomment the # following two definitions. # (will link with "wsock32.lib" and include "winsock.h")#TARGETOS = WIN95 #APPVER = 4.0!include <ntwin32.mak> UI_OPTS = $(guilflags) $(guilibsdll) # Use the following to get a console (e.g., for debugging): CONSOLE_UI_OPTS = $(conlflags) $(conlibsdll)CPU=i386 TOOLS32 = C:\Program Files\Microsoft Visual Studio 8\VC COMPILE_OPTS = $(INCLUDES) $(cdebug) $(cflags) $(cvarsdll) -I. -I"$(TOOLS32)\include" C = cC_COMPILER = "$(TOOLS32)\bin\cl"C_FLAGS = $(COMPILE_OPTS)CPP = cpp CPLUSPLUS_COMPILER = $(C_COMPILER)CPLUSPLUS_FLAGS = $(COMPILE_OPTS)OBJ = obj LINK = $(link) -out: LIBRARY_LINK = lib -out: LINK_OPTS_0 = $(linkdebug) msvcrt.libLIBRARY_LINK_OPTS = LINK_OPTS = $(LINK_OPTS_0) $(UI_OPTS) CONSOLE_LINK_OPTS = $(LINK_OPTS_0) $(CONSOLE_UI_OPTS) SERVICE_LINK_OPTS = kernel32.lib advapi32.lib shell32.lib -subsystem:console,$(APPVER) LIB_SUFFIX = libLIBS_FOR_CONSOLE_APPLICATION =LIBS_FOR_GUI_APPLICATION = MULTIMEDIA_LIBS = winmm.libEXE = .exePLATFORM = Windows rc32 = "$(TOOLS32)\bin\rc".rc.res: $(rc32) $<##### End of variables to change MULTICAST_STREAMER_APPS = testMP3Streamer$(EXE) testMPEG1or2VideoStreamer$(EXE) testMPEG1or2AudioVideoStreamer$(EXE) testMPEG2TransportStreamer$(EXE) testMPEG4VideoStreamer$(EXE) testDVVideoStreamer$(EXE) testWAVAudioStreamer$(EXE) testAMRAudioStreamer$(EXE) vobStreamer$(EXE) MULTICAST_RECEIVER_APPS = testMP3Receiver$(EXE) testMPEG1or2VideoReceiver$(EXE) sapWatch$(EXE) MULTICAST_MISC_APPS = testRelay$(EXE) MULTICAST_APPS = $(MULTICAST_STREAMER_APPS) $(MULTICAST_RECEIVER_APPS) $(MULTICAST_MISC_APPS) UNICAST_STREAMER_APPS = testOnDemandRTSPServer$(EXE) testMPEG1or2AudioVideoToDarwin$(EXE) testMPEG4VideoToDarwin$(EX

Eugen Podsypalnikov

Please try to extent this line : LINK_OPTS_0 = $(linkdebug) msvcrt.lib to :) : LINK_OPTS_0 = $(linkdebug) msvcrt.lib bufferoverflowU.lib

virtual void BeHappy() = 0;

sindhumahe

hi , thanks for ur patient replies LINK_OPTS_0 = $(linkdebug) msvcrt.lib libBasicUsageEnvironment.lib libgroupsock.lib libliveMedia.lib libUsageEnvironment.lib i have added the libraries like this. now after i compiled , good news is erros got reduced. but new ones have popped in. "LINK : fatal error LNK1181: cannot open input file "libBasicUsageEnvironment.lib"" how to fix this one? can u plz help me ?

Eugen Podsypalnikov

Please try this suggestion firstly :) : LINK_OPTS_0 = $(linkdebug) msvcrt.lib bufferoverflowU.lib

virtual void BeHappy() = 0;

sindhumahe

oops sorry buddy. i added the bufferoverflowU.lib and have got the following error. LINK : fatal error LNK1181: cannot open input file "bufferoverflowU.lib"

Eugen Podsypalnikov

OK :) Please try to find the bufferoverflowU.lib file on your (probably C:\ ) harddisk and set it with its full path, please, for a test only. Thanks :)

virtual void BeHappy() = 0;

sindhumahe

hi, found the "buffeoverflowU.lib" in c:\ added the path in the library files as well as include files. but now facing new errors( 15 in number :( ) should i add anyother library?kindly help error of type 1: libBasicUsageEnvironment.lib(BasicUsageEnvironment0.obj) : error LNK2001: unresolved external symbol __imp____iob_func error of type 2:libliveMedia.lib(RTCP.obj) : error LNK2001: unresolved external symbol __ftol2_sse error of type 3:libliveMedia.lib(InputFile.obj) : error LNK2001: unresolved external symbol __imp___stat64i32 error of type 4 :libgroupsock.lib(GroupsockHelper.obj) : error LNK2001: unresolved external symbol __imp___ctime64

Eugen Podsypalnikov

Please try to find and set the libcntpr.lib with its full path too :)

virtual void BeHappy() = 0;

sindhumahe

hey i am not able to find that library.. :(

David Crow

sindhumahe wrote:

libgroupsock.lib(Groupsock.obj) : error LNK2001: unresolved external symbol _security_cookie

See here, especially the Compiling and Linking Problems section.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

David Crow

sindhumahe wrote:

found the "buffeoverflowU.lib" in c:\

Why are there .lib files in the root folder of the C: drive? :wtf:

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

sindhumahe

hi , i am not able to find the .lib file which u mentioned. any idea to resolve my problem ? pplz help.:confused: