diff --git a/mesonbuild/compilers.py b/mesonbuild/compilers.py
index 4bb0d83c9..2c35c67a8 100644
--- a/mesonbuild/compilers.py
+++ b/mesonbuild/compilers.py
@@ -1348,6 +1348,11 @@ GCC_STANDARD = 0
 GCC_OSX = 1
 GCC_MINGW = 2
 
+CLANG_STANDARD = 0
+CLANG_OSX = 1
+CLANG_WIN = 2
+# Possibly clang-cl?
+
 def get_gcc_soname_args(gcc_type, shlib_name, path, soversion):
     if soversion is None:
         sostr = ''
@@ -1480,22 +1485,34 @@ class GnuObjCPPCompiler(ObjCPPCompiler):
         return get_gcc_soname_args(self.gcc_type, shlib_name, path, soversion)
 
 class ClangObjCCompiler(GnuObjCCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
         super().__init__(exelist, version, is_cross, exe_wrapper)
         self.id = 'clang'
+        self.base_options = ['b_lto', 'b_pgo', 'b_sanitize']
+        self.clang_type = cltype
+        if self.clang_type != CLANG_OSX:
+            self.base_options.append('b_lundef')
 
 class ClangObjCPPCompiler(GnuObjCPPCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
         super().__init__(exelist, version, is_cross, exe_wrapper)
         self.id = 'clang'
+        self.clang_type = cltype
+        self.base_options = ['b_lto', 'b_pgo', 'b_sanitize']
+        if self.clang_type != CLANG_OSX:
+            self.base_options.append('b_lundef')
 
 class ClangCCompiler(CCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+    def __init__(self, exelist, version, clang_type, is_cross, exe_wrapper=None):
         CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
         self.id = 'clang'
+        self.clang_type = clang_type
         self.warn_args = {'1': ['-Wall', '-Winvalid-pch'],
                           '2': ['-Wall', '-Wextra', '-Winvalid-pch'],
                           '3' : ['-Wall', '-Wpedantic', '-Wextra', '-Winvalid-pch']}
+        self.base_options = ['b_lto', 'b_pgo', 'b_sanitize']
+        if self.clang_type != CLANG_OSX:
+            self.base_options.append('b_lundef')
 
     def get_buildtype_args(self, buildtype):
         return gnulike_buildtype_args[buildtype]
@@ -1584,12 +1601,16 @@ class GnuCPPCompiler(CPPCompiler):
         return []
 
 class ClangCPPCompiler(CPPCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
         CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
         self.id = 'clang'
         self.warn_args = {'1': ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor'],
                           '2': ['-Wall', '-Wextra', '-Winvalid-pch', '-Wnon-virtual-dtor'],
                           '3': ['-Wall', '-Wpedantic', '-Wextra', '-Winvalid-pch', '-Wnon-virtual-dtor']}
+        self.clang_type = cltype
+        self.base_options = ['b_lto', 'b_pgo', 'b_sanitize']
+        if self.clang_type != CLANG_OSX:
+            self.base_options.append('b_lundef')
 
     def get_buildtype_args(self, buildtype):
         return gnulike_buildtype_args[buildtype]
diff --git a/mesonbuild/environment.py b/mesonbuild/environment.py
index 1586248e5..3893e60aa 100644
--- a/mesonbuild/environment.py
+++ b/mesonbuild/environment.py
@@ -222,7 +222,11 @@ class Environment():
                     gtype = GCC_STANDARD
                 return GnuCCompiler(ccache + [compiler], version, gtype, is_cross, exe_wrap)
             if 'clang' in out:
-                return ClangCCompiler(ccache + [compiler], version, is_cross, exe_wrap)
+                if 'Apple' in out:
+                    cltype = CLANG_OSX
+                else:
+                    cltype = CLANG_STANDARD
+                return ClangCCompiler(ccache + [compiler], version, cltype, is_cross, exe_wrap)
             if 'Microsoft' in out or 'Microsoft' in err:
                 # Visual Studio prints version number to stderr but
                 # everything else to stdout. Why? Lord only knows.
@@ -346,7 +350,11 @@ class Environment():
                     gtype = GCC_STANDARD
                 return GnuCPPCompiler(ccache + [compiler], version, gtype, is_cross, exe_wrap)
             if 'clang' in out:
-                return ClangCPPCompiler(ccache + [compiler], version, is_cross, exe_wrap)
+                if 'Apple' in out:
+                    cltype = CLANG_OSX
+                else:
+                    cltype = CLANG_STANDARD
+                return ClangCPPCompiler(ccache + [compiler], version, cltype, is_cross, exe_wrap)
             if 'Microsoft' in out or 'Microsoft' in err:
                 version = re.search(Environment.version_regex, err).group()
                 return VisualStudioCPPCompiler([compiler], version, is_cross, exe_wrap)
@@ -377,7 +385,7 @@ class Environment():
             'Free Software Foundation' in out:
             return GnuObjCCompiler(exelist, version, is_cross, exe_wrap)
         if out.startswith('Apple LLVM'):
-            return ClangObjCCompiler(exelist, version, is_cross, exe_wrap)
+            return ClangObjCCompiler(exelist, version, CLANG_OSX, is_cross, exe_wrap)
         if 'apple' in out and 'Free Software Foundation' in out:
             return GnuObjCCompiler(exelist, version, is_cross, exe_wrap)
         raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
@@ -407,7 +415,7 @@ class Environment():
             'Free Software Foundation' in out:
             return GnuObjCPPCompiler(exelist, version, is_cross, exe_wrap)
         if out.startswith('Apple LLVM'):
-            return ClangObjCPPCompiler(exelist, version, is_cross, exe_wrap)
+            return ClangObjCPPCompiler(exelist, version, CLANG_OSX, is_cross, exe_wrap)
         if 'apple' in out and 'Free Software Foundation' in out:
             return GnuObjCPPCompiler(exelist, version, is_cross, exe_wrap)
         raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')