move to C++11

FaissException.h

@@ -27,9 +27,9 @@ class FaissException : public std::exception {
                  int line);
 
   /// from std::exception
-  virtual const char* what() const _GLIBCXX_USE_NOEXCEPT
+  const char* what() const noexcept override
   {  return msg.c_str(); }
-  virtual ~FaissException () _GLIBCXX_USE_NOEXCEPT {}
+  ~FaissException () noexcept override {}
 
   std::string msg;
 };

example_makefiles/makefile.inc.Linux

@@ -11,7 +11,7 @@
 
 CC=g++
 
-CFLAGS=-fPIC -m64 -Wall -g -O3  -msse4 -mpopcnt -fopenmp -Wno-sign-compare -Dnullptr=NULL -Doverride= -fopenmp
+CFLAGS=-fPIC -m64 -Wall -g -O3  -msse4 -mpopcnt -fopenmp -Wno-sign-compare -std=c++11 -fopenmp
 LDFLAGS=-g -fPIC  -fopenmp
 
 # common linux flags
@@ -62,11 +62,11 @@ BLASCFLAGS=-DFINTEGER=int
 # This is for Centos:
 BLASLDFLAGS?=/usr/lib64/libopenblas.so.0
 
-# for Ubuntu 16: 
+# for Ubuntu 16:
 # sudo apt-get install libopenblas-dev python-numpy python-dev
 # BLASLDFLAGS?=/usr/lib/libopenblas.so.0
 
-# for Ubuntu 14: 
+# for Ubuntu 14:
 # sudo apt-get install libopenblas-dev liblapack3 python-numpy python-dev
 # BLASLDFLAGS?=/usr/lib/libopenblas.so.0 /usr/lib/lapack/liblapack.so.3.0
 #
@@ -102,12 +102,12 @@ SWIGEXEC=swig
 #
 # python -c "import distutils.sysconfig; print distutils.sysconfig.get_python_inc()"
 # python -c "import numpy ; print numpy.get_include()"
-# 
-# or, for Python 3, with 
-# 
+#
+# or, for Python 3, with
+#
 # python3 -c "import distutils.sysconfig; print(distutils.sysconfig.get_python_inc())"
 # python3 -c "import numpy ; print(numpy.get_include())"
-# 
+#
 
 PYTHONCFLAGS=-I/usr/include/python2.7/ -I/usr/lib64/python2.7/site-packages/numpy/core/include/
 
@@ -138,7 +138,7 @@ NVCCFLAGS= $(CUDAFLAGS) \
    -ccbin $(CC11) -DFAISS_USE_FLOAT16
 
 # BLAS LD flags for nvcc (used to generate an executable)
-# if BLASLDFLAGS contains several flags, each one may 
+# if BLASLDFLAGS contains several flags, each one may
 # need to be prepended with -Xlinker
 BLASLDFLAGSNVCC=-Xlinker $(BLASLDFLAGS)
 

example_makefiles/makefile.inc.Mac.brew

@@ -4,7 +4,7 @@
 # Tested on macOS Sierra (10.12.2) with llvm installed using Homebrew (https://brew.sh)
 # brew install llvm
 CC=/usr/local/opt/llvm/bin/clang++
-CFLAGS=-fPIC -m64 -Wall -g -O3 -msse4 -mpopcnt -fopenmp -Wno-sign-compare -Dnullptr=NULL -I/usr/local/opt/llvm/include -Doverride=
+CFLAGS=-fPIC -m64 -Wall -g -O3 -msse4 -mpopcnt -fopenmp -Wno-sign-compare -Dnullptr=NULL -I/usr/local/opt/llvm/include -std=c++11
 LDFLAGS=-g -fPIC -fopenmp -L/usr/local/opt/llvm/lib
 
 # common mac flags

example_makefiles/makefile.inc.Mac.port

@@ -9,7 +9,7 @@
 # port install g++-mp-6
 CC=/opt/local/bin/g++-mp-6
 
-CFLAGS=-fPIC -m64 -Wall -g -O3  -msse4 -mpopcnt -fopenmp -Wno-sign-compare -Doverride=
+CFLAGS=-fPIC -m64 -Wall -g -O3  -msse4 -mpopcnt -fopenmp -Wno-sign-compare -std=c++11
 LDFLAGS=-g -fPIC  -fopenmp