Re: [Discuss-gnuradio] Compile Error Under Cygwin: Undefined Symbol"INFINITY"

[Don Ward]

----- Original Message ----- 
From: "Reid N Kleckner" <address@hidden>
To: <address@hidden>
Sent: Wednesday, August 08, 2007 2:17 PM
Subject: [Discuss-gnuradio] Compile Error Under Cygwin: Undefined 
Symbol"INFINITY"


> Is anyone familiar with the following error?  I don't see it already on 
> the
> list.
>
> g++ -DHAVE_CONFIG_H -I. -I../../../.. -DOMNITHREAD_POSIX=1 -I../../../../omnith
> read -I../../../../gnuradio-core/src/lib/runtime -I../../../../gnuradio-core/src
> /lib/general -I../../../../gnuradio-core/src/lib/general -I../../../../gnuradio-
> core/src/lib/gengen -I../../../../gnuradio-core/src/lib/gengen -I../../../../gnu
> radio-core/src/lib/filter -I../../../../gnuradio-core/src/lib/filter -I../../../
> ../gnuradio-core/src/lib/reed-solomon -I../../../../gnuradio-core/src/lib/io 
>  -I.
> ./../../../gnuradio-core/src/lib/g72x -I../../../../gnuradio-core/src/lib/swig 
>  -
> I../../../../gnuradio-core/src/lib/swig -I/usr/local/include -I/usr/include/boos
> t-1_33_1/ -I/usr/local/include -g -O2 -Wall -Woverloaded-virtual -MT 
> gr_peak_det
> ector_fb.lo -MD -MP -MF .deps/gr_peak_detector_fb.Tpo -c 
> gr_peak_detector_fb.cc
> -DDLL_EXPORT -DPIC -o .libs/gr_peak_detector_fb.o
> gr_peak_detector_fb.cc: In member function `virtual int 
> gr_peak_detector_fb::wor
> k(int, gr_vector_const_void_star&, gr_vector_void_star&)':
> gr_peak_detector_fb.cc:64: error: `INFINITY' undeclared (first use this 
> function
> )
> gr_peak_detector_fb.cc:64: error: (Each undeclared identifier is reported 
> only o
> nce for each function it appears in.)
> make[6]: *** [gr_peak_detector_fb.lo] Error 1
>
> I'm using current svn under Cygwin with GCC 3.4.4-3.  Obviously this is a
> constant that somehow got undefined.  If I were to go in and give it a 
> quick
> fix via #define INFINITY (something), what would I use?

When building from the svn repository on Cygwin, I use the following:

CPPFLAGS="-DNOMINMAX -DINFINITY=HUGE_VAL" 
./configure --with-boost-include-dir=/usr/include/boost-1_33_1

INFINITY appears to be (inadvertently?) omitted from the Cygwin include 
files.  NOMINMAX works around a Microsoft incompatibility with ANSI C++ 
(required when using libusb 0.1.12; see 
http://www.gnuradio.org/trac/ticket/145).

-- Don W.