diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 698cc357b..000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-language: cpp
-dist: xenial
-addons:
-  apt:
-    packages:
-      - gcc-multilib
-      - g++-multilib
-      - libstdc++6
-      - lib32stdc++6
-      - libc6-dev
-      - libc6-dev-i386
-      - linux-libc-dev
-      - linux-libc-dev:i386
-env:
-  matrix:
-    - AM_CC=clang AM_CXX=clang++ AM_ARCH=x86,x64 AM_TYPE=optimize
-#   - AM_CC=emcc AM_CXX=em++ AM_ARCH=x86 AM_TYPE=optimize
-#   - AM_CC=emcc AM_CXX=em++ AM_ARCH=x86 AM_TYPE=debug
-    - AM_CC=clang AM_CXX=clang++ AM_ARCH=x86,x64 AM_TYPE=debug
-install:
-  - source ./tools/travis-download-compiler.sh
-  - CHECKOUT_DIR=$PWD && cd .. && $CHECKOUT_DIR/tools/checkout-deps.sh && cd $CHECKOUT_DIR
-  - export PATH="~/.local/bin:$PATH"
-  - $AM_CXX --version
-script:
-  - mkdir objdir
-  - cd objdir
-  - CC=$AM_CC CXX=$AM_CXX python ../configure.py --enable-$AM_TYPE --targets=$AM_ARCH
-  - ambuild
-  - python $CHECKOUT_DIR/tests/runtests.py .
diff --git a/AMBuildScript b/AMBuildScript
index a2d4f20ce..b79987f86 100644
--- a/AMBuildScript
+++ b/AMBuildScript
@@ -107,10 +107,7 @@ class Config(object):
             if cxx.target.platform == 'linux':
                 cxx.postlink += ['-lpthread', '-lrt']
             elif cxx.target.platform == 'mac':
-                cxx.linkflags.remove('-lstdc++')
                 cxx.cflags += ['-mmacosx-version-min=10.15']
-                cxx.cflags += ['-stdlib=libc++']
-                cxx.linkflags += ['-stdlib=libc++']
                 cxx.linkflags += ['-mmacosx-version-min=10.15']
             elif cxx.target.platform == 'windows':
                 cxx.defines += ['WIN32', '_WINDOWS']
@@ -144,7 +141,6 @@ class Config(object):
             '-Wno-switch',
         ]
         cxx.cxxflags += ['-std=c++17']
-        cxx.linkflags += ['-lstdc++']
 
         if builder.options.debug == '1':
             cxx.cflags += ['-g3']
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index 8809de002..000000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-version: 1.0.{build}
-clone_folder: c:\projects\sourcepawn
-install:
-- cmd: .appveyor\setup_environment.bat
-build_script:
-- cmd: .appveyor\build.bat
\ No newline at end of file
diff --git a/compiler/sci18n.cpp b/compiler/sci18n.cpp
index 3f1138d94..3328ca224 100644
--- a/compiler/sci18n.cpp
+++ b/compiler/sci18n.cpp
@@ -48,6 +48,13 @@
 #include "errors.h"
 #include "sc.h"
 
+#define _SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING
+
+#if defined(__clang__)
+# pragma clang diagnostic push
+# pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#endif
+
 void UnicodeCodepointToUtf8(ucell codepoint, std::string* out) {
 #if defined(_MSC_VER) && _MSC_VER >= 1900 && _MSC_VER < 2000
     std::wstring_convert<std::codecvt_utf8<__int32>, __int32> convert;
@@ -59,3 +66,7 @@ void UnicodeCodepointToUtf8(ucell codepoint, std::string* out) {
 
     *out += convert.to_bytes(&cp, &cp + 1);
 }
+
+#if defined(__clang__)
+# pragma clang diagnostic pop
+#endif