Fix compiler warnings across the tree. Adds --enable-warnings-as-errors configure option. Currently compiles with no warnings with GCC 4.2.3 on Ubuntu 8.04.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@9396 221aa14e-8319-0410-a670-987f0aec2ac5

5 files changed, 10 insertions, 5 deletions

diff --git a/gnuradio-core/src/lib/general/gr_iqcomp_cc.cc b/gnuradio-core/src/lib/general/gr_iqcomp_cc.cc
index 19b81392e..e0a2c08ae 100644
--- a/gnuradio-core/src/lib/general/gr_iqcomp_cc.cc
+++ b/gnuradio-core/src/lib/general/gr_iqcomp_cc.cc
@@ -40,7 +40,8 @@ gr_iqcomp_cc::gr_iqcomp_cc (float mu)
 		   gr_make_io_signature (1, 1, sizeof (gr_complex))),
     d_mu (mu)
 {
-  float d_wi=0.0, d_wq=0.0;
+  d_wi=0.0;
+  d_wq=0.0;
 }
 
 int
@@ -49,7 +50,7 @@ gr_iqcomp_cc::work (int noutput_items,
 		   gr_vector_void_star &output_items)
 {
   const gr_complex *iptr = (gr_complex *) input_items[0];
-  gr_complex *optr = (gr_complex *) output_items[0];
+  // gr_complex *optr = (gr_complex *) output_items[0];
 
   for(int i = 0 ; i < noutput_items ; i++) {
     float i_out = iptr[i].real() - iptr[i].imag() * d_wq;
diff --git a/gnuradio-core/src/lib/general/gr_ofdm_qam_mapper.cc b/gnuradio-core/src/lib/general/gr_ofdm_qam_mapper.cc
index 433b3bc31..0f974069e 100644
--- a/gnuradio-core/src/lib/general/gr_ofdm_qam_mapper.cc
+++ b/gnuradio-core/src/lib/general/gr_ofdm_qam_mapper.cc
@@ -151,18 +151,20 @@ void gr_ofdm_qam_mapper::make_constellation()
   d_constellation_map[15] = gr_complex(3, 3);
 
   coeff = sqrt(31.0)/2.0;
-  for(i = 0; i < d_constellation_map.size(); i++) {
+  for(i = 0; i < static_cast<int>(d_constellation_map.size()); i++) {
     d_constellation_map[i] /= coeff;
     printf("const[%d]: %f + j%f\n", i, d_constellation_map[i].real(), d_constellation_map[i].imag());
   }
 }
 
+#if 0
 static float
 randombit()
 {
   int r = rand()&1;
   return (float)(-1 + 2*r);
 }
+#endif
 
 int
 gr_ofdm_qam_mapper::work(int noutput_items,
diff --git a/gnuradio-core/src/lib/general/gr_stream_mux.cc b/gnuradio-core/src/lib/general/gr_stream_mux.cc
index 8ba138471..e56974c50 100644
--- a/gnuradio-core/src/lib/general/gr_stream_mux.cc
+++ b/gnuradio-core/src/lib/general/gr_stream_mux.cc
@@ -86,7 +86,7 @@ gr_stream_mux::general_work(int noutput_items,
     if(VERBOSE) {
       printf("mux: nouput_items: %d   d_stream: %d\n", noutput_items, d_stream);
       for(size_t i = 0; i < d_lengths.size(); i++)
-	printf("\tninput_items[%d]: %d\n", i, ninput_items[i]);
+	printf("\tninput_items[%zu]: %d\n", i, ninput_items[i]);
     }
 
     while (1) {
diff --git a/gnuradio-core/src/lib/general/gri_fft.cc b/gnuradio-core/src/lib/general/gri_fft.cc
index f6e28e1d1..509420d8a 100644
--- a/gnuradio-core/src/lib/general/gri_fft.cc
+++ b/gnuradio-core/src/lib/general/gri_fft.cc
@@ -37,7 +37,7 @@ static boost::mutex  s_planning_mutex;
 static char *
 wisdom_filename ()
 {
-  static char *filename = ".gr_fftw_wisdom";
+  static const char *filename = ".gr_fftw_wisdom";
 
   char	*home = getenv ("HOME");
   if (home){
diff --git a/gnuradio-core/src/lib/general/qa_gr_firdes.cc b/gnuradio-core/src/lib/general/qa_gr_firdes.cc
index 5a41f118a..771249b2c 100644
--- a/gnuradio-core/src/lib/general/qa_gr_firdes.cc
+++ b/gnuradio-core/src/lib/general/qa_gr_firdes.cc
@@ -33,6 +33,7 @@
 
 using std::vector;
 
+#if 0
 static void
 print_taps (std::ostream &s, vector<float> &v)
 {
@@ -41,6 +42,7 @@ print_taps (std::ostream &s, vector<float> &v)
     printf ("tap[%2d] = %16.7e\n", i, v[i]);
   }
 }
+#endif
 
 static void
 check_symmetry (vector<float> &v)