Command line linking for FMOD on windows, 'undefined reference' [duplicate] - c++

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C++:Undefined reference to 'FMOD:: X'
(3 answers)
Closed 5 years ago.
I know this will probably a rather dumb question, but after two days of trying, i thought i would ask anyway. I’m quite new to C++, so I think there will be a very simple solution to this.
When I try to compile the examples in the low level examples section of the FMOD API on the command line I get always ‘undefined reference’ errors for the FMOD stuff. I know there must be a problem with the libraries, but as you can see in the makefile, I tried to include everything:
In the lib folder of the FMOD API are:
fmod_vc.lib , fmodL_vc.lib, fmod64_vc.lib, fmodL64_vc.lib, libfmod.a, libfmodL.a
I use the latest version of the FMOD API on Windows 8.1 64 bit. The problem is independent of the compiler. I tried GCC/Cygwin and CLANG. The error output is produced by MinGW. I think I searched pretty everywhere on the net. The anwsers to: C++:Undefined reference to 'FMOD:: X' are not working for me. As far as I can see, there is no more fmodex_vc.lib/fmodex64_vc.lib in the API.
Here is my makefile:
CFLAGS = -m64 -c -Wall -g --std=c++11
LFLAGS = -m64 -g -Wl,-rpath=../lib
INCLUDE_PATH = -I../inc
LIBRARY_PATH = -L../lib
LIBS = -lfmod64 -lfmodL64 -lfmod64_vc -lfmodL64_vc
all: generate_tone.o common.o common_platform.o
g++ $(LFLAGS) $(LIBRARY_PATH) generate_tone.o common.o common_platform.o -o generate.exe ../lib/libfmod.a ../lib/libfmodL.a $(LIBS)
common.o: common.cpp common.h
g++ $(CFLAGS) $(INCLUDE_PATH) common.cpp -o common.o
common_platform.o: common_platform.cpp common_platform.h
g++ $(CFLAGS) $(INCLUDE_PATH) common_platform.cpp -o common_platform.o
generate_tone.o: generate_tone.cpp
g++ $(CFLAGS) $(INCLUDE_PATH) generate_tone.cpp -o generate_tone.o
And here are the error messages:
generate_tone.o: In function `FMOD_Main()':
c:\cSandBox\fmod\examples/generate_tone.cpp:28: undefined reference to `FMOD::System::getVersion(unsigned int*)'
c:\cSandBox\fmod\examples/generate_tone.cpp:36: undefined reference to `FMOD::System::init(int, unsigned int, void*)'
c:\cSandBox\fmod\examples/generate_tone.cpp:42: undefined reference to `FMOD::System::createDSPByType(FMOD_DSP_TYPE, FMOD::DSP**)'
c:\cSandBox\fmod\examples/generate_tone.cpp:44: undefined reference to `FMOD::DSP::setParameterFloat(int, float)'
c:\cSandBox\fmod\examples/generate_tone.cpp:58: undefined reference to `FMOD::ChannelControl::stop()'
c:\cSandBox\fmod\examples/generate_tone.cpp:62: undefined reference to `FMOD::System::playDSP(FMOD::DSP*, FMOD::ChannelGroup*, bool, FMOD::Channel**)'
c:\cSandBox\fmod\examples/generate_tone.cpp:64: undefined reference to `FMOD::ChannelControl::setVolume(float)'
c:\cSandBox\fmod\examples/generate_tone.cpp:66: undefined reference to `FMOD::DSP::setParameterInt(int, int)'
c:\cSandBox\fmod\examples/generate_tone.cpp:68: undefined reference to `FMOD::ChannelControl::setPaused(bool)'
c:\cSandBox\fmod\examples/generate_tone.cpp:76: undefined reference to `FMOD::ChannelControl::stop()'
c:\cSandBox\fmod\examples/generate_tone.cpp:80: undefined reference to `FMOD::System::playDSP(FMOD::DSP*, FMOD::ChannelGroup*, bool, FMOD::Channel**)'
c:\cSandBox\fmod\examples/generate_tone.cpp:82: undefined reference to `FMOD::ChannelControl::setVolume(float)'
c:\cSandBox\fmod\examples/generate_tone.cpp:84: undefined reference to `FMOD::DSP::setParameterInt(int, int)'
c:\cSandBox\fmod\examples/generate_tone.cpp:86: undefined reference to `FMOD::ChannelControl::setPaused(bool)'
c:\cSandBox\fmod\examples/generate_tone.cpp:94: undefined reference to `FMOD::ChannelControl::stop()'
c:\cSandBox\fmod\examples/generate_tone.cpp:98: undefined reference to `FMOD::System::playDSP(FMOD::DSP*, FMOD::ChannelGroup*, bool, FMOD::Channel**)'
c:\cSandBox\fmod\examples/generate_tone.cpp:100: undefined reference to `FMOD::ChannelControl::setVolume(float)'
c:\cSandBox\fmod\examples/generate_tone.cpp:102: undefined reference to `FMOD::DSP::setParameterInt(int, int)'
c:\cSandBox\fmod\examples/generate_tone.cpp:104: undefined reference to `FMOD::ChannelControl::setPaused(bool)'
c:\cSandBox\fmod\examples/generate_tone.cpp:112: undefined reference to `FMOD::ChannelControl::stop()'
c:\cSandBox\fmod\examples/generate_tone.cpp:116: undefined reference to `FMOD::System::playDSP(FMOD::DSP*, FMOD::ChannelGroup*, bool, FMOD::Channel**)'
c:\cSandBox\fmod\examples/generate_tone.cpp:118: undefined reference to `FMOD::ChannelControl::setVolume(float)'
c:\cSandBox\fmod\examples/generate_tone.cpp:120: undefined reference to `FMOD::DSP::setParameterInt(int, int)'
c:\cSandBox\fmod\examples/generate_tone.cpp:122: undefined reference to `FMOD::ChannelControl::setPaused(bool)'
c:\cSandBox\fmod\examples/generate_tone.cpp:130: undefined reference to `FMOD::ChannelControl::stop()'
c:\cSandBox\fmod\examples/generate_tone.cpp:142: undefined reference to `FMOD::ChannelControl::getVolume(float*)'
c:\cSandBox\fmod\examples/generate_tone.cpp:149: undefined reference to `FMOD::ChannelControl::setVolume(float)'
c:\cSandBox\fmod\examples/generate_tone.cpp:157: undefined reference to `FMOD::Channel::getFrequency(float*)'
c:\cSandBox\fmod\examples/generate_tone.cpp:162: undefined reference to `FMOD::Channel::setFrequency(float)'
c:\cSandBox\fmod\examples/generate_tone.cpp:167: undefined reference to `FMOD::System::update()'
c:\cSandBox\fmod\examples/generate_tone.cpp:176: undefined reference to `FMOD::Channel::getFrequency(float*)'
c:\cSandBox\fmod\examples/generate_tone.cpp:178: undefined reference to `FMOD::ChannelControl::getVolume(float*)'
c:\cSandBox\fmod\examples/generate_tone.cpp:180: undefined reference to `FMOD::ChannelControl::isPlaying(bool*)'
c:\cSandBox\fmod\examples/generate_tone.cpp:209: undefined reference to `FMOD::DSP::release()'
c:\cSandBox\fmod\examples/generate_tone.cpp:211: undefined reference to `FMOD::System::close()'
c:\cSandBox\fmod\examples/generate_tone.cpp:213: undefined reference to `FMOD::System::release()'
common_platform.o: In function `Common_Init(void**)':
c:\cSandBox\fmod\examples/common_platform.cpp:78: undefined reference to `__imp_CoInitializeEx'
common_platform.o: In function `Common_Close()':
c:\cSandBox\fmod\examples/common_platform.cpp:83: undefined reference to `__imp_CoUninitialize'
collect2.exe: error: ld returned 1 exit status
And here is the source file:
/*==============================================================================
Generate Tone Example
Copyright (c), Firelight Technologies Pty, Ltd 2004-2017.
This example shows how to play generated tones using System::playDSP
instead of manually connecting and disconnecting DSP units.
==============================================================================*/
#include "fmod.hpp"
#include "common.h"
int FMOD_Main()
{
FMOD::System *system;
FMOD::Channel *channel = 0;
FMOD::DSP *dsp;
FMOD_RESULT result;
unsigned int version;
void *extradriverdata = 0;
Common_Init(&extradriverdata);
/*
Create a System object and initialize.
*/
result = FMOD::System_Create(&system);
ERRCHECK(result);
result = system->getVersion(&version);
ERRCHECK(result);
if (version < FMOD_VERSION)
{
Common_Fatal("FMOD lib version %08x doesn't match header version %08x", version, FMOD_VERSION);
}
result = system->init(32, FMOD_INIT_NORMAL, extradriverdata);
ERRCHECK(result);
/*
Create an oscillator DSP units for the tone.
*/
result = system->createDSPByType(FMOD_DSP_TYPE_OSCILLATOR, &dsp);
ERRCHECK(result);
result = dsp->setParameterFloat(FMOD_DSP_OSCILLATOR_RATE, 440.0f); /* Musical note 'A' */
ERRCHECK(result);
/*
Main loop
*/
do
{
Common_Update();
if (Common_BtnPress(BTN_ACTION1))
{
if (channel)
{
result = channel->stop();
ERRCHECK(result);
}
result = system->playDSP(dsp, 0, true, &channel);
ERRCHECK(result);
result = channel->setVolume(0.5f);
ERRCHECK(result);
result = dsp->setParameterInt(FMOD_DSP_OSCILLATOR_TYPE, 0);
ERRCHECK(result);
result = channel->setPaused(false);
ERRCHECK(result);
}
if (Common_BtnPress(BTN_ACTION2))
{
if (channel)
{
result = channel->stop();
ERRCHECK(result);
}
result = system->playDSP(dsp, 0, true, &channel);
ERRCHECK(result);
result = channel->setVolume(0.125f);
ERRCHECK(result);
result = dsp->setParameterInt(FMOD_DSP_OSCILLATOR_TYPE, 1);
ERRCHECK(result);
result = channel->setPaused(false);
ERRCHECK(result);
}
if (Common_BtnPress(BTN_ACTION3))
{
if (channel)
{
result = channel->stop();
ERRCHECK(result);
}
result = system->playDSP(dsp, 0, true, &channel);
ERRCHECK(result);
result = channel->setVolume(0.125f);
ERRCHECK(result);
result = dsp->setParameterInt(FMOD_DSP_OSCILLATOR_TYPE, 2);
ERRCHECK(result);
result = channel->setPaused(false);
ERRCHECK(result);
}
if (Common_BtnPress(BTN_ACTION4))
{
if (channel)
{
result = channel->stop();
ERRCHECK(result);
}
result = system->playDSP(dsp, 0, true, &channel);
ERRCHECK(result);
result = channel->setVolume(0.5f);
ERRCHECK(result);
result = dsp->setParameterInt(FMOD_DSP_OSCILLATOR_TYPE, 4);
ERRCHECK(result);
result = channel->setPaused(false);
ERRCHECK(result);
}
if (Common_BtnPress(BTN_MORE))
{
if (channel)
{
result = channel->stop();
ERRCHECK(result);
channel = 0;
}
}
if (channel)
{
if (Common_BtnDown(BTN_UP) || Common_BtnDown(BTN_DOWN))
{
float volume;
result = channel->getVolume(&volume);
ERRCHECK(result);
volume += (Common_BtnDown(BTN_UP) ? +0.1f : -0.1f);
volume = (volume > 1.0f) ? 1.0f : volume;
volume = (volume < 0.0f) ? 0.0f : volume;
result = channel->setVolume(volume);
ERRCHECK(result);
}
if (Common_BtnDown(BTN_LEFT) || Common_BtnDown(BTN_RIGHT))
{
float frequency;
result = channel->getFrequency(&frequency);
ERRCHECK(result);
frequency += (Common_BtnDown(BTN_RIGHT) ? +500.0f : -500.0f);
result = channel->setFrequency(frequency);
ERRCHECK(result);
}
}
result = system->update();
ERRCHECK(result);
{
float frequency = 0.0f, volume = 0.0f;
bool playing = false;
if (channel)
{
result = channel->getFrequency(&frequency);
ERRCHECK(result);
result = channel->getVolume(&volume);
ERRCHECK(result);
result = channel->isPlaying(&playing);
ERRCHECK(result);
}
Common_Draw("==================================================");
Common_Draw("Generate Tone Example.");
Common_Draw("Copyright (c) Firelight Technologies 2004-2017.");
Common_Draw("==================================================");
Common_Draw("");
Common_Draw("Press %s to play a sine wave", Common_BtnStr(BTN_ACTION1));
Common_Draw("Press %s to play a square wave", Common_BtnStr(BTN_ACTION2));
Common_Draw("Press %s to play a saw wave", Common_BtnStr(BTN_ACTION3));
Common_Draw("Press %s to play a triangle wave", Common_BtnStr(BTN_ACTION4));
Common_Draw("Press %s to stop the channel", Common_BtnStr(BTN_MORE));
Common_Draw("Press %s and %s to change volume", Common_BtnStr(BTN_UP), Common_BtnStr(BTN_DOWN));
Common_Draw("Press %s and %s to change frequency", Common_BtnStr(BTN_LEFT), Common_BtnStr(BTN_RIGHT));
Common_Draw("Press %s to quit", Common_BtnStr(BTN_QUIT));
Common_Draw("");
Common_Draw("Channel is %s", playing ? "playing" : "stopped");
Common_Draw("Volume %0.2f", volume);
Common_Draw("Frequency %0.2f", frequency);
}
Common_Sleep(50);
} while (!Common_BtnPress(BTN_QUIT));
/*
Shut down
*/
result = dsp->release();
ERRCHECK(result);
result = system->close();
ERRCHECK(result);
result = system->release();
ERRCHECK(result);
Common_Close();
return 0;
}
The compiling works great, did I miss a library?

Answer 1

In fact the solution was on C++:Undefined reference to 'FMOD:: X' but I didn't see it. I try to make it clear here for anybody, who stumbles on the same problem.
"Because the name-mangling systems for such features are not standardized across compilers, few linkers can link object code that was produced by different compilers."
https://en.wikipedia.org/wiki/Name_mangling#How_different_compilers_mangle_the_same_functions
So none of the compilers I used could cope with the Visual Studio compiled libraries.