how to build sndpeek from sndtools

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When trying to compile sndpeek and likely other binaries from sndtools ( for Ubuntu you may get the following build and link errors. This build process was for the ALSA build target. This note will show how to fix the problems.

Build error:

../marsyas/LPC.cpp: In member function 'virtual void LPC::process(fvec&, fvec&)':
../marsyas/LPC.cpp:120:40: error: 'abs' was not declared in this scope
   rmat_(i-1,j-1) = corr_(abs((int)(i-j)));

Link error:

g++ -o sndpeek chuck_fft.o RtAudio.o Thread.o sndpeek.o Stk.o Centroid.o DownSampler.o Flux.o LPC.o MFCC.o RMS.o Rolloff.o System.o fvec.o AutoCorrelation.o Communicator.o Hamming.o MagFFT.o NormRMS.o MarSignal.o fmatrix.o -L/usr/X11R6/lib -lglut -lGL -lGLU -lasound -lXmu -lX11 -lXext -lXi -lm -lsndfile
/usr/bin/ld: Thread.o: undefined reference to symbol 'pthread_cancel@@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/ error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[1]: *** [sndpeek] Error 1

My build environment

$ uname -a
Linux noah-ubuntu 3.19.0-43-generic #49~14.04.1-Ubuntu SMP Thu Dec 31 15:44:49 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
$ cat /etc/ 
Ubuntu 14.04.3 LTS

Ubuntu Packages required for building and running

Install the following Ubuntu packages:

aptitude install libxi-dev libxmu-headers libalsaplayer0 freeglut3-dev libxt-dev libsm-dev libice-dev libsndfile1-dev

I did not start from a stock Ubuntu installation. Others repeating these instructions may need to install additional packages (build-essential, at the very least).

Source patches required to build

Patch the makefile.alsa source file under src/sndpeek. This adds the -Wl option telling gcc to pass an option directly to the linker. This is used to pass the --start-group and --end-group options to the GNU linker, which tell it to try to resolve circular references by trying every possible link order until it finds one with no undefined references. This can be slow in general, but causes no significant delay here.

# diff -u makefile.alsa ../../../sndpeek-1.4.backup/src/sndpeek/makefile.alsa 
--- makefile.alsa	2015-03-01 14:31:15.000000000 -0800
+++ ../../../sndpeek-1.4.backup/src/sndpeek/makefile.alsa	2016-01-18 14:19:59.271647943 -0800
@@ -4,7 +4,7 @@
-LIBS=-L/usr/X11R6/lib -lglut -lGL -lGLU -lasound -lXmu -lX11 -lXext -lXi -lm -lsndfile
+LIBS=-Wl,--start-group -L/usr/X11R6/lib -lglut -lGL -lGLU -lasound -lXmu -lX11 -lXext -lXi -lm -lsndfile -pthread -Wl,--end-group 
 OBJS=chuck_fft.o RtAudio.o Thread.o sndpeek.o Stk.o \
 	Centroid.o DownSampler.o Flux.o LPC.o MFCC.o RMS.o Rolloff.o \

Patch the LPC.cpp source file under src/marsyas:

diff -u LPC.cpp ../../../sndpeek-1.4.backup/src/marsyas/LPC.cpp 
--- LPC.cpp	2015-03-01 14:31:15.000000000 -0800
+++ ../../../sndpeek-1.4.backup/src/marsyas/LPC.cpp	2016-01-18 13:48:37.115597483 -0800
@@ -27,6 +27,7 @@
 #include "LPC.h"
+#include <cstdlib>
 LPC::LPC( unsigned int inSize )

Now running make linux-alsa should work.