diff --git a/next/CMakeLists.txt b/next/CMakeLists.txt
index 5ba734f48..c9d07fd5f 100644
--- a/next/CMakeLists.txt
+++ b/next/CMakeLists.txt
@@ -28,21 +28,24 @@ option(MBGL_WITH_QT "Build Mapbox GL Qt bindings" OFF)
 option(MBGL_WITH_SANITIZER "Use [address|thread|memory|undefined] here" OFF)
 
 set(CMAKE_CXX_FLAGS_DEBUGCOVERAGE "${CMAKE_CXX_FLAGS_DEBUG} --coverage")
-set(CMAKE_C_FLAGS_DEBUGCOVERAGE "${CMAKE_CXX_FLAGS_DEBUG} --coverage")
+set(CMAKE_C_FLAGS_DEBUGCOVERAGE "${CMAKE_C_FLAGS_DEBUG} --coverage")
 
 set(CMAKE_CXX_FLAGS_SANITIZE "-DSANITIZE -g -O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls -fsanitize=${MBGL_WITH_SANITIZER}")
 set(CMAKE_C_FLAGS_SANITIZE "-DSANITIZE -g -O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls -fsanitize=${MBGL_WITH_SANITIZER}")
 
-if(MBGL_WITH_QT)
-    find_package(Qt5Core REQUIRED)
-    set(CMAKE_AUTOMOC ON)
-    set(CMAKE_AUTORCC ON)
-endif()
+add_compile_options(
+    $<$<COMPILE_LANGUAGE:CXX>:-fno-rtti>
+    $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<NOT:$<PLATFORM_ID:Windows>>>:-Wall>
+    $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<NOT:$<PLATFORM_ID:Windows>>>:-Wextra>
+    $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<NOT:$<PLATFORM_ID:Windows>>>:-Werror>
+    $<$<CXX_COMPILER_ID:GNU>:-Wno-error=maybe-uninitialized>
+    $<$<CXX_COMPILER_ID:GNU>:-Wno-error=unknown-pragmas>
+    $<$<CXX_COMPILER_ID:AppleClang>:-Wno-error=deprecated-declarations>
+    $<$<CXX_COMPILER_ID:AppleClang>:-Wno-error=unused-parameter>
+    $<$<CXX_COMPILER_ID:AppleClang>:-Wno-error=unused-property-ivar>
+)
 
-# Avoid warnings when setting visibility
 cmake_policy(SET CMP0063 NEW)
-
-# Compiler/linker configuration
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
@@ -56,6 +59,12 @@ set(CMAKE_INTERPROCEDURAL_OPTIMIZATION_MINSIZEREL ON)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
 
+if(MBGL_WITH_QT)
+    find_package(Qt5Core REQUIRED)
+    set(CMAKE_AUTOMOC ON)
+    set(CMAKE_AUTORCC ON)
+endif()
+
 add_library(
     mbgl-core STATIC
     ${MBGL_ROOT}/include/mbgl/actor/actor.hpp
diff --git a/platform/android/src/test/render_test_collator.cpp b/platform/android/src/test/render_test_collator.cpp
index e6e3b27b4..7c8331897 100644
--- a/platform/android/src/test/render_test_collator.cpp
+++ b/platform/android/src/test/render_test_collator.cpp
@@ -7,22 +7,16 @@ namespace platform {
 
 class Collator::Impl {
 public:
-    Impl(bool caseSensitive_, bool diacriticSensitive_, optional<std::string>)
-        : caseSensitive(caseSensitive_), diacriticSensitive(diacriticSensitive_) {}
+    Impl(optional<std::string>) {}
 
-    bool operator==(const Impl& other) const { return true; }
+    bool operator==(const Impl&) const { return true; }
 
-    int compare(const std::string& lhs, const std::string& rhs) const { return 0; }
+    int compare(const std::string&, const std::string&) const { return 0; }
 
     std::string resolvedLocale() const { return ""; }
-
-private:
-    bool caseSensitive;
-    bool diacriticSensitive;
 };
 
-Collator::Collator(bool caseSensitive, bool diacriticSensitive, optional<std::string> locale_)
-    : impl(std::make_shared<Impl>(caseSensitive, diacriticSensitive, std::move(locale_))) {}
+Collator::Collator(bool, bool, optional<std::string> locale_) : impl(std::make_shared<Impl>(std::move(locale_))) {}
 
 int Collator::compare(const std::string& lhs, const std::string& rhs) const {
     return impl->compare(lhs, rhs);
diff --git a/platform/darwin/src/MGLAccountManager.h b/platform/darwin/src/MGLAccountManager.h
index 0d833a7ba..d1983a4dd 100644
--- a/platform/darwin/src/MGLAccountManager.h
+++ b/platform/darwin/src/MGLAccountManager.h
@@ -34,7 +34,7 @@ MGL_EXPORT
     and the type `String`. Alternatively, you may call this method from your
     application delegate’s `-applicationDidFinishLaunching:` method.
  */
-@property (class, nullable) NSString *accessToken;
+@property (class, assign, nullable) NSString *accessToken;
 
 @end
 
diff --git a/platform/darwin/src/MGLConversion.h b/platform/darwin/src/MGLConversion.h
index d6de4151b..3f7ffdd0c 100644
--- a/platform/darwin/src/MGLConversion.h
+++ b/platform/darwin/src/MGLConversion.h
@@ -124,7 +124,7 @@ public:
         }
     }
 
-    static optional<GeoJSON> toGeoJSON(const Holder& holder, Error& error) {
+    static optional<GeoJSON> toGeoJSON(const Holder&, Error& error) {
         error = { "toGeoJSON not implemented" };
         return {};
     }
diff --git a/platform/darwin/src/MGLStyleValue_Private.h b/platform/darwin/src/MGLStyleValue_Private.h
index 07dbd3123..43f0b9d28 100644
--- a/platform/darwin/src/MGLStyleValue_Private.h
+++ b/platform/darwin/src/MGLStyleValue_Private.h
@@ -140,7 +140,7 @@ private: // Private utilities for converting from mgl to mbgl values
     class = typename std::enable_if<!std::is_enum<MBGLEnum>::value>::type,
     typename MGLEnum = ObjCEnum,
     class = typename std::enable_if<!std::is_enum<MGLEnum>::value>::type>
-    NSObject* toRawStyleSpecValue(NSObject *rawMGLValue, MBGLEnum &mbglValue) {
+    NSObject* toRawStyleSpecValue(NSObject *rawMGLValue, MBGLEnum &) {
         if ([rawMGLValue isKindOfClass:[NSValue class]]) {
             const auto rawNSValue = (NSValue *)rawMGLValue;
             if (strcmp([rawNSValue objCType], @encode(CGVector)) == 0) {
@@ -157,13 +157,13 @@ private: // Private utilities for converting from mgl to mbgl values
     class = typename std::enable_if<std::is_enum<MBGLEnum>::value>::type,
     typename MGLEnum = ObjCEnum,
     class = typename std::enable_if<std::is_enum<MGLEnum>::value>::type>
-    NSString* toRawStyleSpecValue(ObjCType rawValue, MBGLEnum &mbglValue) {
+    NSString* toRawStyleSpecValue(ObjCType rawValue, MBGLEnum &) {
         MGLEnum mglEnum;
         [rawValue getValue:&mglEnum];
         return @(mbgl::Enum<MGLEnum>::toString(mglEnum));
     }
 
-    NSObject* toRawStyleSpecValue(MGLColor *color, MBGLType &mbglValue) {
+    NSObject* toRawStyleSpecValue(MGLColor *color, MBGLType &) {
         return @(color.mgl_color.stringify().c_str());
     }