diff --git a/.appveyor.yml b/.appveyor.yml
index fe8e8e5..d8558dd 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -10,7 +10,6 @@ platform:
 
 install:
   - cinst wget
-  - cinst meson
   - cinst libsndfile
 
 build_script:
diff --git a/meson.build b/meson.build
index 953a9f3..673cf6b 100644
--- a/meson.build
+++ b/meson.build
@@ -101,6 +101,9 @@ sndfile_dep = dependency('sndfile', version: '>= 1.0.16', required: false)
 vamp_dep = dependency('vamp-sdk', version: '>= 2.9', required: false)
 thread_dep = dependency('threads')
 have_ladspa = cpp.has_header('ladspa.h', args: extra_include_args)
+have_sincos = cpp.has_function('sincos',
+                               prefix: '#define _GNU_SOURCE\n#include <math.h>',
+                               args: '-lm')
 have_jni = cpp.has_header('jni.h', args: extra_include_args)
 
 javac = find_program('javac', required: false)
@@ -232,6 +235,10 @@ else
 
 endif # resampler
 
+if not have_sincos
+  feature_defines += [ '-DLACK_SINCOS' ]
+endif
+
 if ipp_needed
   feature_defines += [
     '-DHAVE_IPP',
diff --git a/src/RubberBandStretcher.cpp b/src/RubberBandStretcher.cpp
index 19d6ea1..e9851a7 100644
--- a/src/RubberBandStretcher.cpp
+++ b/src/RubberBandStretcher.cpp
@@ -23,7 +23,6 @@
 
 #include "StretcherImpl.h"
 
-using namespace std;
 
 namespace RubberBand {
 
@@ -122,7 +121,7 @@ RubberBandStretcher::setMaxProcessSize(size_t samples)
 }
 
 void
-RubberBandStretcher::setKeyFrameMap(const map<size_t, size_t> &mapping)
+RubberBandStretcher::setKeyFrameMap(const std::map<size_t, size_t> &mapping)
 {
     m_d->setKeyFrameMap(mapping);
 }
@@ -177,19 +176,19 @@ RubberBandStretcher::getInputIncrement() const
     return m_d->getInputIncrement();
 }
 
-vector<int>
+std::vector<int>
 RubberBandStretcher::getOutputIncrements() const
 {
     return m_d->getOutputIncrements();
 }
 
-vector<float>
+std::vector<float>
 RubberBandStretcher::getPhaseResetCurve() const
 {
     return m_d->getPhaseResetCurve();
 }
 
-vector<int>
+std::vector<int>
 RubberBandStretcher::getExactTimePoints() const
 {
     return m_d->getExactTimePoints();