diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5d3ee38..06b831d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,7 +26,7 @@ set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR
     "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
-    set(warnings "-Wall -Wextra -Werror")
+    set(CMAKE_CXX_FLAGS "-Wall -Wextra -Werror -Wno-sign-compare -Wno-unused-parameter")
 endif()
 
 if(APPLE)
diff --git a/bin/catima_calculator.cpp b/bin/catima_calculator.cpp
index 18f098c..ec27df6 100644
--- a/bin/catima_calculator.cpp
+++ b/bin/catima_calculator.cpp
@@ -67,14 +67,15 @@ int main( int argc, char * argv[] )
                     if(e.count("min")>0 && e.count("max")>0 && (e.count("num")>0 || e.count("step")>0)){
                         double emin = e["min"].get<double>();
                         double emax = e["max"].get<double>();
-                        int num;
+                        int num=0;
                         if(e.count("step")){
                             num = 1+(emax-emin)/e["step"].get<int>();
                         }
                         if(e.count("num")){
                             num = e["num"].get<int>();
                         }
-                        energies  =  linspace_vector(emin,emax,num);
+                        if(num>2)
+                            energies  =  linspace_vector(emin,emax,num);
                     }
                 }
                 }
diff --git a/calculations.cpp b/calculations.cpp
index 52869c5..8092072 100644
--- a/calculations.cpp
+++ b/calculations.cpp
@@ -456,7 +456,7 @@ double sezi_dedx_e(const Projectile &p, const Target &t){
         return se;
     }
     else{ // heavy ion
-        double h1,h2,h3,h4;
+        double h1,h4;
         double a,q,b;
         double l1,l0,l;
         double YRmin = 0.130; //  YRmin = VR / ZP**0.67 <= 0.13 OR VR <= 1.0
@@ -817,8 +817,10 @@ double z_eff_Schiwietz(double pz, double beta, double tz){
 }
 
 double z_eff_atima14(double pz, double T, double tz){
+    double qmean = 0.0;
+    #ifdef GLOBAL
     double qpb;
-    double qhigh,qwinger,qglobal,qmean=0;
+    double qhigh,qwinger,qglobal;
     double c1 = 1.4;
     double c2 = 0.28;
     double c3 = 0.04;
@@ -826,7 +828,6 @@ double z_eff_atima14(double pz, double T, double tz){
     double gamma = gamma_from_T(T);
     double emax, emin;
     qpb = z_eff_Pierce_Blann(pz,beta);
-    #ifdef GLOBAL
 
     if(T>30.0 && T<1500.0 && pz>28){
         qglobal = z_eff_global(pz,T,tz);
diff --git a/catima.cpp b/catima.cpp
index 73b08a8..987f7d5 100644
--- a/catima.cpp
+++ b/catima.cpp
@@ -29,7 +29,6 @@ bool operator==(const Config &a, const Config&b){
 
 double dedx(Projectile &p, double T, const Material &mat, const  Config &c){
     double sum = 0;
-    double w=0;
     if(T<=0)return 0.0;
 
     sum += dedx_n(p,mat);
@@ -108,7 +107,6 @@ std::vector<double> dedx_from_range(Projectile &p, const std::vector<double> &T,
 }
 
 double range_straggling(Projectile &p, double T, const Material &t, const Config &c){
-    double r=0;
     auto data = _storage.Get(p,t,c);
     Interpolator range_straggling_spline(energy_table.values,data.range_straggling.data(),energy_table.num);
     return sqrt(range_straggling_spline(T));
@@ -133,7 +131,6 @@ double da2de(Projectile &p, double T, const Material &t, const Config &c){
 }
 
 double angular_straggling_from_E(Projectile &p, double T, double Tout, const Material &t, const Config &c){
-    double r=0;
     auto data = _storage.Get(p,t,c);
     Interpolator angular_straggling_spline(energy_table.values,data.angular_variance.data(),energy_table.num);
     return sqrt(angular_straggling_spline(T) - angular_straggling_spline(Tout));
@@ -151,7 +148,6 @@ double energy_straggling_from_E(Projectile &p, double T, double Tout,const Mater
 double energy_out(double T, double thickness, Interpolator &range_spline){
     constexpr double epsilon = 1E-5;
     int counter = 0;
-    double lo=0,hi=T;
     double range;
     double dedx;
     double e,r;
@@ -381,7 +377,6 @@ DataPoint calculate_DataPoint(Projectile p, const Material &t, const Config &c){
     dp.range.resize(max_datapoints);
     dp.range_straggling.resize(max_datapoints);
     dp.angular_variance.resize(max_datapoints);
-    double dedxval;
     auto fdedx = [&](double x)->double{
             return 1.0/dedx(p,x,t,c);    
             };
diff --git a/spline.cpp b/spline.cpp
index 5e3330b..9ec79ba 100644
--- a/spline.cpp
+++ b/spline.cpp
@@ -54,8 +54,6 @@ std::vector<double> band_matrix::trig_solve(const std::vector<double>& b) const
     assert( this->dim()==(int)b.size() );
     std::vector<double> x(this->dim());
     std::vector<double> g(this->dim());
-    int j_stop;
-    double sum;
     
     assert(d[0]!=0.0);
     x[0] = b[0]/d[0];