def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def have_compiler():
    """ Return True if there appears to be an executable compiler
    """
    compiler = customized_ccompiler()
    try:
        cmd = compiler.compiler  # Unix compilers
    except AttributeError:
        try:
            if not compiler.initialized:
                compiler.initialize()  # MSVC is different
        except (DistutilsError, ValueError):
            return False
        cmd = [compiler.cc]
    try:
        p = Popen(cmd, stdout=PIPE, stderr=PIPE)
        p.stdout.close()
        p.stderr.close()
        p.wait()
    except OSError:
        return False
    return True 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def have_compiler():
    """ Return True if there appears to be an executable compiler
    """
    compiler = customized_ccompiler()
    try:
        cmd = compiler.compiler  # Unix compilers
    except AttributeError:
        try:
            if not compiler.initialized:
                compiler.initialize()  # MSVC is different
        except (DistutilsError, ValueError):
            return False
        cmd = [compiler.cc]
    try:
        p = Popen(cmd, stdout=PIPE, stderr=PIPE)
        p.stdout.close()
        p.stderr.close()
        p.wait()
    except OSError:
        return False
    return True 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def have_compiler():
    """ Return True if there appears to be an executable compiler
    """
    compiler = customized_ccompiler()
    try:
        cmd = compiler.compiler  # Unix compilers
    except AttributeError:
        try:
            if not compiler.initialized:
                compiler.initialize()  # MSVC is different
        except (DistutilsError, ValueError):
            return False
        cmd = [compiler.cc]
    try:
        p = Popen(cmd, stdout=PIPE, stderr=PIPE)
        p.stdout.close()
        p.stderr.close()
        p.wait()
    except OSError:
        return False
    return True 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def have_compiler():
    """ Return True if there appears to be an executable compiler
    """
    compiler = customized_ccompiler()
    try:
        cmd = compiler.compiler  # Unix compilers
    except AttributeError:
        try:
            if not compiler.initialized:
                compiler.initialize()  # MSVC is different
        except (DistutilsError, ValueError):
            return False
        cmd = [compiler.cc]
    try:
        p = Popen(cmd, stdout=PIPE, stderr=PIPE)
        p.stdout.close()
        p.stderr.close()
        p.wait()
    except OSError:
        return False
    return True 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def have_compiler():
    """ Return True if there appears to be an executable compiler
    """
    compiler = customized_ccompiler()
    try:
        cmd = compiler.compiler  # Unix compilers
    except AttributeError:
        try:
            if not compiler.initialized:
                compiler.initialize()  # MSVC is different
        except (DistutilsError, ValueError):
            return False
        cmd = [compiler.cc]
    try:
        p = Popen(cmd, stdout=PIPE, stderr=PIPE)
        p.stdout.close()
        p.stderr.close()
        p.wait()
    except OSError:
        return False
    return True 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def have_compiler():
    """ Return True if there appears to be an executable compiler
    """
    compiler = customized_ccompiler()
    try:
        cmd = compiler.compiler  # Unix compilers
    except AttributeError:
        try:
            if not compiler.initialized:
                compiler.initialize()  # MSVC is different
        except (DistutilsError, ValueError):
            return False
        cmd = [compiler.cc]
    try:
        p = Popen(cmd, stdout=PIPE, stderr=PIPE)
        p.stdout.close()
        p.stderr.close()
        p.wait()
    except OSError:
        return False
    return True 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def have_compiler():
    """ Return True if there appears to be an executable compiler
    """
    compiler = customized_ccompiler()
    try:
        cmd = compiler.compiler  # Unix compilers
    except AttributeError:
        try:
            if not compiler.initialized:
                compiler.initialize()  # MSVC is different
        except (DistutilsError, ValueError):
            return False
        cmd = [compiler.cc]
    try:
        p = Popen(cmd, stdout=PIPE, stderr=PIPE)
        p.stdout.close()
        p.stderr.close()
        p.wait()
    except OSError:
        return False
    return True 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def have_compiler():
    """ Return True if there appears to be an executable compiler
    """
    compiler = customized_ccompiler()
    try:
        cmd = compiler.compiler  # Unix compilers
    except AttributeError:
        try:
            if not compiler.initialized:
                compiler.initialize()  # MSVC is different
        except (DistutilsError, ValueError):
            return False
        cmd = [compiler.cc]
    try:
        p = Popen(cmd, stdout=PIPE, stderr=PIPE)
        p.stdout.close()
        p.stderr.close()
        p.wait()
    except OSError:
        return False
    return True 

def library_extensions(self):
        c = customized_ccompiler()
        static_exts = []
        if c.compiler_type != 'msvc':
            # MSVC doesn't understand binutils
            static_exts.append('.a')
        if sys.platform == 'win32':
            static_exts.append('.lib')  # .lib is used by MSVC and others
        if self.search_static_first:
            exts = static_exts + [so_ext]
        else:
            exts = [so_ext] + static_exts
        if sys.platform == 'cygwin':
            exts.append('.dll.a')
        if sys.platform == 'darwin':
            exts.append('.dylib')
        return exts 

def have_compiler():
    """ Return True if there appears to be an executable compiler
    """
    compiler = customized_ccompiler()
    try:
        cmd = compiler.compiler  # Unix compilers
    except AttributeError:
        try:
            if not compiler.initialized:
                compiler.initialize()  # MSVC is different
        except (DistutilsError, ValueError):
            return False
        cmd = [compiler.cc]
    try:
        p = Popen(cmd, stdout=PIPE, stderr=PIPE)
        p.stdout.close()
        p.stderr.close()
        p.wait()
    except OSError:
        return False
    return True 

def calc_info(self):
        c = customized_ccompiler()

        lib_dirs = self.get_lib_dirs()

        openblas_libs = self.get_libs('libraries', self._lib_names)
        if openblas_libs == self._lib_names: # backward compat with 1.8.0
            openblas_libs = self.get_libs('openblas_libs', self._lib_names)

        info = self.check_libs(lib_dirs, openblas_libs, [])

        if c.compiler_type == "msvc" and info is None:
            from numpy.distutils.fcompiler import new_fcompiler
            f = new_fcompiler(c_compiler=c)
            if f and f.compiler_type == 'gnu95':
                # Try gfortran-compatible library files
                info = self.check_msvc_gfortran_libs(lib_dirs, openblas_libs)
                # Skip lapack check, we'd need build_ext to do it
                assume_lapack = True
        elif info:
            assume_lapack = False
            info['language'] = 'c'

        if info is None:
            return

        # Add extra info for OpenBLAS
        extra_info = self.calc_extra_info()
        dict_append(info, **extra_info)

        if not (assume_lapack or self.check_embedded_lapack(info)):
            return

        info['define_macros'] = [('HAVE_CBLAS', None)]
        self.set_info(**info) 

def check_embedded_lapack(self, info):
        res = False
        c = customized_ccompiler()

        tmpdir = tempfile.mkdtemp()
        s = """void zungqr_();
        int main(int argc, const char *argv[])
        {
            zungqr_();
            return 0;
        }"""
        src = os.path.join(tmpdir, 'source.c')
        out = os.path.join(tmpdir, 'a.out')
        # Add the additional "extra" arguments
        try:
            extra_args = info['extra_link_args']
        except Exception:
            extra_args = []
        if sys.version_info < (3, 5) and sys.version_info > (3, 0) and c.compiler_type == "msvc":
            extra_args.append("/MANIFEST")
        try:
            with open(src, 'wt') as f:
                f.write(s)
            obj = c.compile([src], output_dir=tmpdir)
            try:
                c.link_executable(obj, out, libraries=info['libraries'],
                                  library_dirs=info['library_dirs'],
                                  extra_postargs=extra_args)
                res = True
            except distutils.ccompiler.LinkError:
                res = False
        finally:
            shutil.rmtree(tmpdir)
        return res 

def test_compile2(self):
        # Compile source and link the second source
        tsi = self.c_temp2
        c = customized_ccompiler()
        extra_link_args = tsi.calc_extra_info()['extra_link_args']
        previousDir = os.getcwd()
        try:
            # Change directory to not screw up directories
            os.chdir(self._dir2)
            c.compile([os.path.basename(self._src2)], output_dir=self._dir2,
                      extra_postargs=extra_link_args)
            # Ensure that the object exists
            assert_(os.path.isfile(self._src2.replace('.c', '.o')))
        finally:
            os.chdir(previousDir) 

def calc_info(self):
        c = customized_ccompiler()

        lib_dirs = self.get_lib_dirs()

        openblas_libs = self.get_libs('libraries', self._lib_names)
        if openblas_libs == self._lib_names: # backward compat with 1.8.0
            openblas_libs = self.get_libs('openblas_libs', self._lib_names)

        info = self.check_libs(lib_dirs, openblas_libs, [])

        if c.compiler_type == "msvc" and info is None:
            from numpy.distutils.fcompiler import new_fcompiler
            f = new_fcompiler(c_compiler=c)
            if f and f.compiler_type == 'gnu95':
                # Try gfortran-compatible library files
                info = self.check_msvc_gfortran_libs(lib_dirs, openblas_libs)
                # Skip lapack check, we'd need build_ext to do it
                assume_lapack = True
        elif info:
            assume_lapack = False
            info['language'] = 'c'

        if info is None:
            return

        # Add extra info for OpenBLAS
        extra_info = self.calc_extra_info()
        dict_append(info, **extra_info)

        if not (assume_lapack or self.check_embedded_lapack(info)):
            return

        info['define_macros'] = [('HAVE_CBLAS', None)]
        self.set_info(**info) 

def check_embedded_lapack(self, info):
        res = False
        c = customized_ccompiler()

        tmpdir = tempfile.mkdtemp()
        s = """void zungqr_();
        int main(int argc, const char *argv[])
        {
            zungqr_();
            return 0;
        }"""
        src = os.path.join(tmpdir, 'source.c')
        out = os.path.join(tmpdir, 'a.out')
        # Add the additional "extra" arguments
        try:
            extra_args = info['extra_link_args']
        except Exception:
            extra_args = []
        if sys.version_info < (3, 5) and sys.version_info > (3, 0) and c.compiler_type == "msvc":
            extra_args.append("/MANIFEST")
        try:
            with open(src, 'wt') as f:
                f.write(s)
            obj = c.compile([src], output_dir=tmpdir)
            try:
                c.link_executable(obj, out, libraries=info['libraries'],
                                  library_dirs=info['library_dirs'],
                                  extra_postargs=extra_args)
                res = True
            except distutils.ccompiler.LinkError:
                res = False
        finally:
            shutil.rmtree(tmpdir)
        return res 

def calc_info(self):
        c = customized_ccompiler()

        lib_dirs = self.get_lib_dirs()

        openblas_libs = self.get_libs('libraries', self._lib_names)
        if openblas_libs == self._lib_names: # backward compat with 1.8.0
            openblas_libs = self.get_libs('openblas_libs', self._lib_names)

        info = self.check_libs(lib_dirs, openblas_libs, [])

        if c.compiler_type == "msvc" and info is None:
            from numpy.distutils.fcompiler import new_fcompiler
            f = new_fcompiler(c_compiler=c)
            if f and f.compiler_type == 'gnu95':
                # Try gfortran-compatible library files
                info = self.check_msvc_gfortran_libs(lib_dirs, openblas_libs)
                # Skip lapack check, we'd need build_ext to do it
                assume_lapack = True
        elif info:
            assume_lapack = False
            info['language'] = 'c'

        if info is None:
            return

        # Add extra info for OpenBLAS
        extra_info = self.calc_extra_info()
        dict_append(info, **extra_info)

        if not (assume_lapack or self.check_embedded_lapack(info)):
            return

        info['define_macros'] = [('HAVE_CBLAS', None)]
        self.set_info(**info) 

def check_embedded_lapack(self, info):
        res = False
        c = customized_ccompiler()

        tmpdir = tempfile.mkdtemp()
        s = """void zungqr_();
        int main(int argc, const char *argv[])
        {
            zungqr_();
            return 0;
        }"""
        src = os.path.join(tmpdir, 'source.c')
        out = os.path.join(tmpdir, 'a.out')
        # Add the additional "extra" arguments
        try:
            extra_args = info['extra_link_args']
        except Exception:
            extra_args = []
        if sys.version_info < (3, 5) and sys.version_info > (3, 0) and c.compiler_type == "msvc":
            extra_args.append("/MANIFEST")
        try:
            with open(src, 'wt') as f:
                f.write(s)
            obj = c.compile([src], output_dir=tmpdir)
            try:
                c.link_executable(obj, out, libraries=info['libraries'],
                                  library_dirs=info['library_dirs'],
                                  extra_postargs=extra_args)
                res = True
            except distutils.ccompiler.LinkError:
                res = False
        finally:
            shutil.rmtree(tmpdir)
        return res 

def test_compile2(self):
        # Compile source and link the second source
        tsi = self.c_temp2
        c = customized_ccompiler()
        extra_link_args = tsi.calc_extra_info()['extra_link_args']
        previousDir = os.getcwd()
        try:
            # Change directory to not screw up directories
            os.chdir(self._dir2)
            c.compile([os.path.basename(self._src2)], output_dir=self._dir2,
                      extra_postargs=extra_link_args)
            # Ensure that the object exists
            assert_(os.path.isfile(self._src2.replace('.c', '.o')))
        finally:
            os.chdir(previousDir) 

def calc_info(self):
        c = customized_ccompiler()

        lib_dirs = self.get_lib_dirs()

        openblas_libs = self.get_libs('libraries', self._lib_names)
        if openblas_libs == self._lib_names: # backward compat with 1.8.0
            openblas_libs = self.get_libs('openblas_libs', self._lib_names)

        info = self.check_libs(lib_dirs, openblas_libs, [])

        if c.compiler_type == "msvc" and info is None:
            from numpy.distutils.fcompiler import new_fcompiler
            f = new_fcompiler(c_compiler=c)
            if f and f.compiler_type == 'gnu95':
                # Try gfortran-compatible library files
                info = self.check_msvc_gfortran_libs(lib_dirs, openblas_libs)
                # Skip lapack check, we'd need build_ext to do it
                assume_lapack = True
        elif info:
            assume_lapack = False
            info['language'] = 'c'

        if info is None:
            return

        # Add extra info for OpenBLAS
        extra_info = self.calc_extra_info()
        dict_append(info, **extra_info)

        if not (assume_lapack or self.check_embedded_lapack(info)):
            return

        info['define_macros'] = [('HAVE_CBLAS', None)]
        self.set_info(**info) 

def check_embedded_lapack(self, info):
        res = False
        c = customized_ccompiler()

        tmpdir = tempfile.mkdtemp()
        s = """void zungqr_();
        int main(int argc, const char *argv[])
        {
            zungqr_();
            return 0;
        }"""
        src = os.path.join(tmpdir, 'source.c')
        out = os.path.join(tmpdir, 'a.out')
        # Add the additional "extra" arguments
        try:
            extra_args = info['extra_link_args']
        except Exception:
            extra_args = []
        if sys.version_info < (3, 5) and sys.version_info > (3, 0) and c.compiler_type == "msvc":
            extra_args.append("/MANIFEST")
        try:
            with open(src, 'wt') as f:
                f.write(s)
            obj = c.compile([src], output_dir=tmpdir)
            try:
                c.link_executable(obj, out, libraries=info['libraries'],
                                  library_dirs=info['library_dirs'],
                                  extra_postargs=extra_args)
                res = True
            except distutils.ccompiler.LinkError:
                res = False
        finally:
            shutil.rmtree(tmpdir)
        return res