diff --git a/configure.ac b/configure.ac
index 20f97754..90f3a453 100644
--- a/configure.ac
+++ b/configure.ac
@@ -19,6 +19,7 @@ MUSR_LIBRARY_NAME=PMusr
 LEM_LIBRARY_NAME=TLemRunHeader
 PSIBIN_LIBRARY_NAME=Class_MuSR_PSI
 MUD_LIBRARY_NAME=mud
+CUBA_LIBRARY_NAME=cuba
 
 dnl -----------------------------------------------
 dnl Optional plug-ins
@@ -105,6 +106,7 @@ AC_SUBST(MUSR_LIBRARY_NAME)
 AC_SUBST(LEM_LIBRARY_NAME)
 AC_SUBST(PSIBIN_LIBRARY_NAME)
 AC_SUBST(MUD_LIBRARY_NAME)
+AC_SUBST(CUBA_LIBRARY_NAME)
 
 PSIBIN_VERSION=$PSIBIN_MAJOR_VERSION.$PSIBIN_MINOR_VERSION.$PSIBIN_MICRO_VERSION
 PSIBIN_RELEASE=$PSIBIN_MAJOR_VERSION.$PSIBIN_MINOR_VERSION
@@ -499,6 +501,7 @@ LOCAL_LIB_LDFLAGS=
 
 case "$host" in
   *-*-cygwin)
+    ARCH=CYGWIN
     LOCAL_BIN_CXXFLAGS="${LOCAL_BIN_CXXFLAGS}"
     LOCAL_LIB_CXXFLAGS="${LOCAL_BIN_CXXFLAGS} -D_DLL"
     LOCAL_PSIBIN_LIB_CXXFLAGS="${LOCAL_LIB_CXXFLAGS} -D_WIN32GCC"
@@ -507,8 +510,11 @@ case "$host" in
     LOCAL_BIN_LDFLAGS="${LOCAL_BIN_LDFLAGS} -Wl,--enable-auto-import -Wl,--enable-runtime-pseudo-reloc"
     LOCAL_LIB_LDFLAGS="-no-undefined ${LOCAL_BIN_LDFLAGS} -Wl,--export-all-symbols"
     ;;
+  *-*-darwin*)
+    ARCH=DARWIN
+    ;;
   *)
-    LOCAL_PSIBIN_LIB_CXXFLAGS="${LOCAL_LIB_CXXFLAGS} -D__linux__"
+    ARCH=OTHERUNIX
     ;;
 esac
 
@@ -547,6 +553,9 @@ dnl -----------------------------------------------
 dnl Specify the files that are going to be created by configure
 dnl -----------------------------------------------
 
+AM_CONDITIONAL([IS_DARWIN], [test "${ARCH}" = "DARWIN"])
+AM_CONDITIONAL([IS_CYGWIN], [test "${ARCH}" = "CYGWIN"])
+
 AM_CONDITIONAL([BUILD_CUBALIB], [test "${BUILD_CUBA}" = "1"])
 AM_CONDITIONAL([BUILD_BMWLIBS], [test "${BUILD_BMW_LIBS}" = "1"])
 AM_CONDITIONAL([BUILD_ASLIBS], [test "${BUILD_AS_LIBS}" = "1"])
diff --git a/src/external/BMWIntegrator/BMWIntegrator.h b/src/external/BMWIntegrator/BMWIntegrator.h
index 3fec935e..804fcd2f 100644
--- a/src/external/BMWIntegrator/BMWIntegrator.h
+++ b/src/external/BMWIntegrator/BMWIntegrator.h
@@ -92,15 +92,15 @@ class TMCIntegrator {
     virtual ~TMCIntegrator();
     void SetParameters(const std::vector<double> &par) const { fPar=par; }
     virtual double FuncAtX(double *) const = 0;
-    double IntegrateFunc(unsigned int, double *, double *);
+    double IntegrateFunc(size_t, double *, double *);
 
   protected:
     mutable vector<double> fPar;
 
   private:
-    static double FuncAtXgsl(double *, unsigned int, void *);
+    static double FuncAtXgsl(double *, size_t, void *);
     ROOT::Math::GSLMCIntegrator *fMCIntegrator;
-    mutable double (*fFunc)(double *, unsigned int, void *);
+    mutable double (*fFunc)(double *, size_t, void *);
 };
 
 inline TMCIntegrator::TMCIntegrator() : fFunc(0) {
@@ -116,12 +116,12 @@ inline TMCIntegrator::~TMCIntegrator(){
   fFunc=0;
 }
 
-inline double TMCIntegrator::FuncAtXgsl(double *x, unsigned int dim, void *obj)
+inline double TMCIntegrator::FuncAtXgsl(double *x, size_t dim, void *obj)
 {
   return ((TMCIntegrator*)obj)->FuncAtX(x);
 }
 
-inline double TMCIntegrator::IntegrateFunc(unsigned int dim, double *x1, double *x2)
+inline double TMCIntegrator::IntegrateFunc(size_t dim, double *x1, double *x2)
 {
   fFunc = &TMCIntegrator::FuncAtXgsl;
   return fMCIntegrator->Integral(fFunc, dim, x1, x2, (this));
diff --git a/src/external/Nonlocal/Makefile.am b/src/external/Nonlocal/Makefile.am
index f9dc8690..7f1fd10e 100644
--- a/src/external/Nonlocal/Makefile.am
+++ b/src/external/Nonlocal/Makefile.am
@@ -46,3 +46,19 @@ libPNL_PippardFitter_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -relea
 ## pkgconfigdir = $(libdir)/pkgconfig
 ## pkgconfig_DATA = PNL_PippardFitter.pc
 
+## However, create some symbolic links to the shared library
+## in order to unify the function call on different operating systems
+
+if IS_DARWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libPNL_PippardFitter.dylib $(libdir)/libPNL_PippardFitter.so
+uninstall-hook:
+	rm -f $(libdir)/libPNL_PippardFitter.so
+endif
+
+if IS_CYGWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libPNL_PippardFitter.dll.a $(libdir)/libPNL_PippardFitter.so
+uninstall-hook:
+	rm -f $(libdir)/libPNL_PippardFitter.so
+endif
diff --git a/src/external/TFitPofB-lib/classes/Makefile.am b/src/external/TFitPofB-lib/classes/Makefile.am
index 66d902bb..18395848 100644
--- a/src/external/TFitPofB-lib/classes/Makefile.am
+++ b/src/external/TFitPofB-lib/classes/Makefile.am
@@ -63,3 +63,19 @@ libTFitPofB_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -release $(PLUG
 ## pkgconfigdir = $(libdir)/pkgconfig
 ## pkgconfig_DATA = PTFitPofB.pc
 
+## However, create some symbolic links to the shared library
+## in order to unify the function call on different operating systems
+
+if IS_DARWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libTFitPofB.dylib $(libdir)/libTFitPofB.so
+uninstall-hook:
+	rm -f $(libdir)/libTFitPofB.so
+endif
+
+if IS_CYGWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libTFitPofB.dll.a $(libdir)/libTFitPofB.so
+uninstall-hook:
+	rm -f $(libdir)/libTFitPofB.so
+endif
diff --git a/src/external/TFitPofB-lib/include/TBulkTriVortexFieldCalc.h b/src/external/TFitPofB-lib/include/TBulkTriVortexFieldCalc.h
index 3ff8db96..0d5b1d51 100644
--- a/src/external/TFitPofB-lib/include/TBulkTriVortexFieldCalc.h
+++ b/src/external/TFitPofB-lib/include/TBulkTriVortexFieldCalc.h
@@ -36,7 +36,7 @@
 #include <string>
 using namespace std;
 
-#include <fftw3.h>
+#include "fftw3.h"
 
 //--------------------
 // Base class for any kind of vortex symmetry
diff --git a/src/external/TFitPofB-lib/include/TPofTCalc.h b/src/external/TFitPofB-lib/include/TPofTCalc.h
index 4b40beff..43d11f14 100644
--- a/src/external/TFitPofB-lib/include/TPofTCalc.h
+++ b/src/external/TFitPofB-lib/include/TPofTCalc.h
@@ -33,7 +33,7 @@
 #define _TPofTCalc_H_
 
 #include "TPofBCalc.h"
-#include <fftw3.h>
+#include "fftw3.h"
 #include <string>
 
 #define PI 3.14159265358979323846
diff --git a/src/external/libCalcMeanFieldsLEM/Makefile.am b/src/external/libCalcMeanFieldsLEM/Makefile.am
index d30ab6f1..31abb7b3 100644
--- a/src/external/libCalcMeanFieldsLEM/Makefile.am
+++ b/src/external/libCalcMeanFieldsLEM/Makefile.am
@@ -18,7 +18,7 @@ dict_cpp_sources = \
 include_HEADERS = $(h_sources)
 noinst_HEADERS = $(h_linkdef) $(dict_h_sources)
 
-INCLUDES = -I$(top_srcdir)/src/include $(TFITPOFB_CFLAGS) $(PMUSR_CFLAGS) $(ROOT_CFLAGS)
+INCLUDES = -I$(top_srcdir)/src/include $(TFITPOFB_CFLAGS) $(PMUSR_CFLAGS) $(ROOT_CFLAGS) $(FFTW3_CFLAGS)
 AM_CXXFLAGS = $(LOCAL_LIB_CXXFLAGS)
 
 BUILT_SOURCES = $(dict_cpp_sources) $(dict_h_sources)
@@ -38,3 +38,19 @@ libCalcMeanFieldsLEM_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -relea
 ## pkgconfigdir = $(libdir)/pkgconfig
 ## pkgconfig_DATA = CalcMeanFieldsLEM.pc
 
+## However, create some symbolic links to the shared library
+## in order to unify the function call on different operating systems
+
+if IS_DARWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libCalcMeanFieldsLEM.dylib $(libdir)/libCalcMeanFieldsLEM.so
+uninstall-hook:
+	rm -f $(libdir)/libCalcMeanFieldsLEM.so
+endif
+
+if IS_CYGWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libCalcMeanFieldsLEM.dll.a $(libdir)/libCalcMeanFieldsLEM.so
+uninstall-hook:
+	rm -f $(libdir)/libCalcMeanFieldsLEM.so
+endif
diff --git a/src/external/libGapIntegrals/Makefile.am b/src/external/libGapIntegrals/Makefile.am
index a22b0ccc..f1753324 100644
--- a/src/external/libGapIntegrals/Makefile.am
+++ b/src/external/libGapIntegrals/Makefile.am
@@ -40,3 +40,19 @@ libGapIntegrals_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -release $(
 ## pkgconfigdir = $(libdir)/pkgconfig
 ## pkgconfig_DATA = GapIntegrals.pc
 
+## However, create some symbolic links to the shared library
+## in order to unify the function call on different operating systems
+
+if IS_DARWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libGapIntegrals.dylib $(libdir)/libGapIntegrals.so
+uninstall-hook:
+	rm -f $(libdir)/libGapIntegrals.so
+endif
+
+if IS_CYGWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libGapIntegrals.dll.a $(libdir)/libGapIntegrals.so
+uninstall-hook:
+	rm -f $(libdir)/libGapIntegrals.so
+endif
diff --git a/src/external/libLFRelaxation/Makefile.am b/src/external/libLFRelaxation/Makefile.am
index 4c199220..5fe462a2 100644
--- a/src/external/libLFRelaxation/Makefile.am
+++ b/src/external/libLFRelaxation/Makefile.am
@@ -40,3 +40,19 @@ libLFRelaxation_la_LDFLAGS = -version-info $(PLUGIN_LIBRARY_VERSION) -release $(
 ## pkgconfigdir = $(libdir)/pkgconfig
 ## pkgconfig_DATA = LFRelaxation.pc
 
+## However, create some symbolic links to the shared library
+## in order to unify the function call on different operating systems
+
+if IS_DARWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libLFRelaxation.dylib $(libdir)/libLFRelaxation.so
+uninstall-hook:
+	rm -f $(libdir)/libLFRelaxation.so
+endif
+
+if IS_CYGWIN
+install-exec-hook:
+	$(LN_S) $(libdir)/libLFRelaxation.dll.a $(libdir)/libLFRelaxation.so
+uninstall-hook:
+	rm -f $(libdir)/libLFRelaxation.so
+endif
\ No newline at end of file
diff --git a/src/external/libLFRelaxation/TLFRelaxation.cpp b/src/external/libLFRelaxation/TLFRelaxation.cpp
index abd1a3f4..ae24398c 100644
--- a/src/external/libLFRelaxation/TLFRelaxation.cpp
+++ b/src/external/libLFRelaxation/TLFRelaxation.cpp
@@ -132,7 +132,7 @@ double TLFStatLorKT::operator()(double t, const vector<double> &par) const {
 
 // LF Dynamic Gaussian KT
 
-TLFDynGssKT::TLFDynGssKT() : fCalcNeeded(true), fFirstCall(true), fWisdom("/home/l_wojek/analysis/WordsOfWisdom.dat"), fNSteps(524288), fDt(0.00004), fCounter(0) {
+TLFDynGssKT::TLFDynGssKT() : fCalcNeeded(true), fFirstCall(true), fWisdom("WordsOfWisdom.dat"), fNSteps(524288), fDt(0.00004), fCounter(0) {
   // Calculate d_omega and C for given NFFT and dt
   fDw = PI/fNSteps/fDt;
   fC = 2.0*gsl_sf_log(double(fNSteps))/(double(fNSteps-1)*fDt);
@@ -228,11 +228,11 @@ double TLFDynGssKT::operator()(double t, const vector<double> &par) const {
 
   if(fCalcNeeded) {
 
-    double t1,t2;
+/*    double t1,t2;
     // get start time
     struct timeval tv_start, tv_stop;
     gettimeofday(&tv_start, 0);
-
+*/
     double tt(0.),sigsqtsq(0.);
 
     if(fabs(par[0])<0.00135538817) {
@@ -262,10 +262,10 @@ double TLFDynGssKT::operator()(double t, const vector<double> &par) const {
         fFFTtime[i]=(1.0-(coeff1*(1.0-exp(-0.5*sigsq*tt*tt)*gsl_sf_cos(omegaL*tt)))+(coeff2*totoIntegrale))*exp(mcplusnu*tt)*fDt;
       }
     }
-
+/*
     gettimeofday(&tv_stop, 0);
     t1 = (tv_stop.tv_sec - tv_start.tv_sec)*1000.0 + (tv_stop.tv_usec - tv_start.tv_usec)/1000.0;
-
+*/
     // Transform to frequency domain
 
     fftw_execute(fFFTplanFORW);
@@ -291,11 +291,11 @@ double TLFDynGssKT::operator()(double t, const vector<double> &par) const {
 //    }
     fCalcNeeded=false;
     fCounter++;
-    
+/*
     gettimeofday(&tv_stop, 0);
     t2 = (tv_stop.tv_sec - tv_start.tv_sec)*1000.0 + (tv_stop.tv_usec - tv_start.tv_usec)/1000.0;
     cout << "# Calculation times: " << t1 << " (ms), " << t2 << " (ms)" << endl;
-    
+*/
   }
 //  return fFFTtime[int(t/fDt)];
   return fDw*exp(fC*t)/PI*fFFTtime[int(t/fDt)];
@@ -303,7 +303,7 @@ double TLFDynGssKT::operator()(double t, const vector<double> &par) const {
 
 // LF Dynamic Lorentz KT
 
-TLFDynLorKT::TLFDynLorKT() : fCalcNeeded(true), fFirstCall(true), fWisdom("/home/l_wojek/analysis/WordsOfWisdom.dat"), fNSteps(524288), fDt(0.000040), fCounter(0), fL1(0.0), fL2(0.0) {
+TLFDynLorKT::TLFDynLorKT() : fCalcNeeded(true), fFirstCall(true), fWisdom("WordsOfWisdom.dat"), fNSteps(524288), fDt(0.000040), fCounter(0), fL1(0.0), fL2(0.0) {
   // Calculate d_omega and C for given NFFT and dt
   fDw = TMath::Pi()/fNSteps/fDt;
   fC = 2.0*TMath::Log(double(fNSteps))/(double(fNSteps-1)*fDt);
@@ -329,8 +329,8 @@ TLFDynLorKT::TLFDynLorKT() : fCalcNeeded(true), fFirstCall(true), fWisdom("/home
 
   fFFTtime = (double *)malloc(sizeof(double) * fNSteps);
   fFFTfreq = (fftw_complex *)fftw_malloc(sizeof(fftw_complex) * (fNSteps/2+1));
-  fFFTplanFORW = fftw_plan_dft_r2c_1d(fNSteps, fFFTtime, fFFTfreq, FFTW_EXHAUSTIVE);
-  fFFTplanBACK = fftw_plan_dft_c2r_1d(fNSteps, fFFTfreq, fFFTtime, FFTW_EXHAUSTIVE);
+  fFFTplanFORW = fftw_plan_dft_r2c_1d(fNSteps, fFFTtime, fFFTfreq, FFTW_ESTIMATE);
+  fFFTplanBACK = fftw_plan_dft_c2r_1d(fNSteps, fFFTfreq, fFFTtime, FFTW_ESTIMATE);
 }
 
 TLFDynLorKT::~TLFDynLorKT() {
diff --git a/src/external/libLFRelaxation/TLFRelaxation.h b/src/external/libLFRelaxation/TLFRelaxation.h
index c5324b74..44a349b0 100644
--- a/src/external/libLFRelaxation/TLFRelaxation.h
+++ b/src/external/libLFRelaxation/TLFRelaxation.h
@@ -38,17 +38,11 @@
 
 using namespace std;
 
-//#include <gsl/gsl_math.h>
-//#include <gsl/gsl_sf_exp.h>
-//#include <gsl/gsl_sf_log.h>
-//#include <gsl/gsl_sf_trig.h>
-//#include <gsl/gsl_sf_bessel.h>
-
-#include "/usr/include/gsl/gsl_math.h"
-#include "/usr/include/gsl/gsl_sf_exp.h"
-#include "/usr/include/gsl/gsl_sf_log.h"
-#include "/usr/include/gsl/gsl_sf_trig.h"
-#include "/usr/include/gsl/gsl_sf_bessel.h"
+#include "gsl/gsl_math.h"
+#include "gsl/gsl_sf_exp.h"
+#include "gsl/gsl_sf_log.h"
+#include "gsl/gsl_sf_trig.h"
+#include "gsl/gsl_sf_bessel.h"
 
 
 //#include "TMath.h"