[Discuss-gnuradio] Include of wrong "math.h"

[Marcus D. Leech]

[  4%] Building CXX object 
lib/CMakeFiles/gnuradio-ra_blocks.dir/slicer_impl.cc.o
In file included from /usr/local/include/gnuradio/math.h:30:0,
                 from /usr/include/c++/4.6/cmath:46,
                 from /usr/include/c++/4.6/complex:46,
                 from /usr/local/include/gnuradio/gr_complex.h:26,
                 from /usr/local/include/gnuradio/gr_types.h:31,
                 from /usr/local/include/gnuradio/gr_runtime_types.h:27,
                 from /usr/local/include/gnuradio/gr_io_signature.h:27,
                 from /home/hugh/gr-ra_blocks/trunk/lib/slicer_impl.cc:25:
/usr/include/c++/4.6/cmath:99:11: error: ‘::acos’ has not been declared
/usr/include/c++/4.6/cmath:115:11: error: ‘::asin’ has not been declared
/usr/include/c++/4.6/cmath:131:11: error: ‘::atan’ has not been declared
/usr/include/c++/4.6/cmath:147:11: error: ‘::atan2’ has not been declared
/usr/include/c++/4.6/cmath:166:11: error: ‘::ceil’ has not been declared
/usr/include/c++/4.6/cmath:182:11: error: ‘::cos’ has not been declared
/usr/include/c++/4.6/cmath:198:11: error: ‘::cosh’ has not been declared
/usr/include/c++/4.6/cmath:214:11: error: ‘::exp’ has not been declared
/usr/include/c++/4.6/cmath:230:11: error: ‘::fabs’ has not been declared
/usr/include/c++/4.6/cmath:246:11: error: ‘::floor’ has not been declared
/usr/include/c++/4.6/cmath:262:11: error: ‘::fmod’ has not been declared
/usr/include/c++/4.6/cmath:272:11: error: ‘::frexp’ has not been declared
/usr/include/c++/4.6/cmath:288:11: error: ‘::ldexp’ has not been declared
/usr/include/c++/4.6/cmath:304:11: error: ‘::log’ has not been declared
/usr/include/c++/4.6/cmath:320:11: error: ‘::log10’ has not been declared
/usr/include/c++/4.6/cmath:336:11: error: ‘::modf’ has not been declared
/usr/include/c++/4.6/cmath:346:11: error: ‘::pow’ has not been declared
/usr/include/c++/4.6/cmath:381:11: error: ‘::sin’ has not been declared
/usr/include/c++/4.6/cmath:397:11: error: ‘::sinh’ has not been declared
/usr/include/c++/4.6/cmath:413:11: error: ‘::sqrt’ has not been declared
/usr/include/c++/4.6/cmath:429:11: error: ‘::tan’ has not been declared
/usr/include/c++/4.6/cmath:445:11: error: ‘::tanh’ has not been declared
/usr/include/c++/4.6/cmath: In function ‘typename 
__gnu_cxx::__enable_if<std::__is_arithmetic<_Tp>::__value, int>::__type 
std::fpclassify(_Tp)’:
/usr/include/c++/4.6/cmath:737:35: error: ‘FP_NAN’ was not declared in this 
scope
/usr/include/c++/4.6/cmath:737:43: error: ‘FP_INFINITE’ was not declared in 
this scope
/usr/include/c++/4.6/cmath:737:56: error: ‘FP_NORMAL’ was not declared in 
this scope
/usr/include/c++/4.6/cmath:738:7: error: ‘FP_SUBNORMAL’ was not declared in 
this scope
/usr/include/c++/4.6/cmath:738:21: error: ‘FP_ZERO’ was not declared in 
this scope
In file included from /usr/include/c++/4.6/cmath:46:0,
                 from /usr/include/c++/4.6/complex:46,
                 from /usr/local/include/gnuradio/gr_complex.h:26,
                 from /usr/local/include/gnuradio/gr_types.h:31,
                 from /usr/local/include/gnuradio/gr_runtime_types.h:27,
                 from /usr/local/include/gnuradio/gr_io_signature.h:27,
                 from /home/hugh/gr-ra_blocks/trunk/lib/slicer_impl.cc:25:
/usr/local/include/gnuradio/math.h: At global scope:
/usr/local/include/gnuradio/math.h:61:15: error: ‘gr::fast_atan2f’ declared 
as an ‘inline’ variable
/usr/local/include/gnuradio/math.h:61:15: error: ‘float gr::fast_atan2f’ 
redeclared as different kind of symbol
/usr/local/include/gnuradio/math.h:58:24: error: previous declaration of 
‘float gr::fast_atan2f(float, float)’
/usr/local/include/gnuradio/math.h:61:15: error: ‘gr_complex’ was not 
declared in this scope
/usr/local/include/gnuradio/math.h: In function ‘float 
gr::branchless_clip(float, float)’:
/usr/local/include/gnuradio/math.h:70:28: error: ‘fabsf’ was not declared 
in this scope
/usr/local/include/gnuradio/math.h: In function ‘unsigned int 
gr::quad_0deg_slicer(float, float)’:
/usr/local/include/gnuradio/math.h:116:15: error: ‘fabsf’ was not declared 
in this scope
/usr/local/include/gnuradio/math.h: At global scope:
/usr/local/include/gnuradio/math.h:133:21: error: ‘gr::quad_45deg_slicer’ 
declared as an ‘inline’ variable
/usr/local/include/gnuradio/math.h:133:21: error: ‘unsigned int 
gr::quad_45deg_slicer’ redeclared as different kind of symbol
/usr/local/include/gnuradio/math.h:98:3: error: previous declaration of 
‘unsigned int gr::quad_45deg_slicer(float, float)’
/usr/local/include/gnuradio/math.h:133:21: error: ‘gr_complex’ was not 
declared in this scope
/usr/local/include/gnuradio/math.h:139:20: error: ‘gr::quad_0deg_slicer’ 
declared as an ‘inline’ variable
/usr/local/include/gnuradio/math.h:139:20: error: ‘unsigned int 
gr::quad_0deg_slicer’ redeclared as different kind of symbol
/usr/local/include/gnuradio/math.h:113:3: error: previous declaration of 
‘unsigned int gr::quad_0deg_slicer(float, float)’
/usr/local/include/gnuradio/math.h:139:20: error: ‘gr_complex’ was not 
declared in this scope
/usr/local/include/gnuradio/math.h: In function ‘unsigned int 
gr::branchless_quad_0deg_slicer(float, float)’:
/usr/local/include/gnuradio/math.h:155:20: error: ‘fabsf’ was not declared 
in this scope
/usr/local/include/gnuradio/math.h: At global scope:
/usr/local/include/gnuradio/math.h:162:31: error: 
‘gr::branchless_quad_0deg_slicer’ declared as an ‘inline’ variable
/usr/local/include/gnuradio/math.h:162:31: error: ‘unsigned int 
gr::branchless_quad_0deg_slicer’ redeclared as different kind of symbol
/usr/local/include/gnuradio/math.h:152:3: error: previous declaration of 
‘unsigned int gr::branchless_quad_0deg_slicer(float, float)’
/usr/local/include/gnuradio/math.h:162:31: error: ‘gr_complex’ was not 
declared in this scope
/usr/local/include/gnuradio/math.h:176:32: error: 
‘gr::branchless_quad_45deg_slicer’ declared as an ‘inline’ variable
/usr/local/include/gnuradio/math.h:176:32: error: ‘unsigned int 
gr::branchless_quad_45deg_slicer’ redeclared as different kind of symbol
/usr/local/include/gnuradio/math.h:168:3: error: previous declaration of 
‘unsigned int gr::branchless_quad_45deg_slicer(float, float)’
/usr/local/include/gnuradio/math.h:176:32: error: ‘gr_complex’ was not 
declared in this scope
make[2]: *** [lib/CMakeFiles/gnuradio-ra_blocks.dir/slicer_impl.cc.o] Error 1
make[1]: *** [lib/CMakeFiles/gnuradio-ra_blocks.dir/all] Error 2
make: *** [all] Error 2


My buddy just tried to compile a OOT module against the latest "maint" of Gnu 
Radio, and got treated to the above explosion.   It looks like
  the C compiler is confusing the version of math.h in the Gnu Radio codebase 
with the libc version, and then things go all explody.

He's running on an x86_64 Ubuntu 12.04 system.


The OOT module was produced using "gr-modtool" just a couple of weeks ago.



--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org