===> Building for gr-osmosdr-0.1.4nb20140917
Scanning dependencies of target gnuradio-osmosdr
[  3%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/source_impl.cc.o
In file included from 
   /export/WRKOBJDIR/wip/gr-osmosdr-git/work/.buildlink/include/gnuradio/math.h:30:0,
                 from /usr/include/g++/cmath:46,
                 from /usr/include/g++/complex:46,
                 from 
     /export/WRKOBJDIR/wip/gr-osmosdr-git/work/.buildlink/include/gnuradio/gr_complex.h:26,
                 from 
     /export/WRKOBJDIR/wip/gr-osmosdr-git/work/.buildlink/include/gnuradio/types.h:31,
                 from 
     /export/WRKOBJDIR/wip/gr-osmosdr-git/work/.buildlink/include/gnuradio/runtime_types.h:27,
                 from 
     /export/WRKOBJDIR/wip/gr-osmosdr-git/work/.buildlink/include/gnuradio/io_signature.h:27,
                 from 
     /export/WRKOBJDIR/wip/gr-osmosdr-git/work/gr-osmosdr/lib/source_impl.cc:30:
/usr/include/g++/cmath:111:11: error: '::acos' has not been declared

gr-osmosdr/lib/source_impl.cc

     26 #ifdef HAVE_CONFIG_H
     27 #include "config.h"
     28 #endif
     29
     30 #include <gnuradio/io_signature.h>
     31 #include <gnuradio/blocks/null_source.h>
     32 #include <gnuradio/blocks/throttle.h>
     33 #include <gnuradio/constants.h>
     34

.buildlink/include/gnuradio/io_signature.h

     23 #ifndef INCLUDED_IO_SIGNATURE_H
     24 #define INCLUDED_IO_SIGNATURE_H
     25
     26 #include <gnuradio/api.h>
     27 #include <gnuradio/runtime_types.h>
     28
     29 namespace gr {

.buildlink/include/gnuradio/runtime_types.h

     23 #ifndef INCLUDED_GR_RUNTIME_TYPES_H
     24 #define INCLUDED_GR_RUNTIME_TYPES_H
     25
     26 #include <gnuradio/api.h>
     27 #include <gnuradio/types.h>
     28
     29 namespace gr {

.buildlink/include/gnuradio/types.h

     23 #ifndef INCLUDED_GR_TYPES_H
     24 #define INCLUDED_GR_TYPES_H
     25
     26 #include <gnuradio/api.h>
     27 #include <boost/shared_ptr.hpp>
     28 #include <vector>
     29 #include <stddef.h>                             // size_t
     30
     31 #include <gnuradio/gr_complex.h>

.buildlink/include/gnuradio/gr_complex.h

     23 #ifndef INCLUDED_GR_COMPLEX_H
     24 #define INCLUDED_GR_COMPLEX_H
     25
     26 #include <complex>
     27 typedef std::complex<float>                     gr_complex;
     28 typedef std::complex<double>                    gr_complexd;
     29

/usr/include/g++/complex

     38 #ifndef _GLIBCXX_COMPLEX
     39 #define _GLIBCXX_COMPLEX 1
     40
     41 #pragma GCC system_header
     42
     43 #include <bits/c++config.h>
     44 #include <bits/cpp_type_traits.h>
     45 #include <ext/type_traits.h>
     46 #include <cmath>
     47 #include <sstream>
     48
     49 _GLIBCXX_BEGIN_NAMESPACE(std)

/usr/include/g++/cmath

     37 //
     38 // ISO C++ 14882: 26.5  C library
     39 //
     40
     41 #pragma GCC system_header
     42
     43 #include <bits/c++config.h>
     44 #include <bits/cpp_type_traits.h>
     45 #include <ext/type_traits.h>
     46 #include <math.h>
     47

.buildlink/include/gnuradio/math.h

     23 /*
     24  * mathematical odds and ends.
     25  */
     26
     27 #ifndef _GR_MATH_H_
     28 #define _GR_MATH_H_
     29
     30 #include <cmath>
     31 #include <gnuradio/api.h>
     32 #include <gnuradio/gr_complex.h>
     33
     34 namespace gr {
     35

(looping, circular dependency ?)
To avoid looping, to go cmath: say

/usr/include/g++/cmath -> .buildlink/include/gnuradio/math.h -> cmath

Apply following change:

--- /usr/include/g++/cmath.orig 2014-08-09 01:58:29.000000000 +0900
+++ /usr/include/g++/cmath      2014-09-18 11:32:44.000000000 +0900
@@ -43,7 +43,7 @@
 #include <bits/c++config.h>
 #include <bits/cpp_type_traits.h>
 #include <ext/type_traits.h>
-#include <math.h>
+#include "/usr/include/math.h"
 
 #ifndef _GLIBCXX_CMATH
 #define _GLIBCXX_CMATH 1

Now gr-osmosdr-git is packaged fine.