Add headerpad linker argument on OSX.

mesonbuild/compilers/c.py

@@ -18,6 +18,7 @@ from .. import mlog
 from .. import coredata
 from ..mesonlib import EnvironmentException, version_compare, Popen_safe, listify
 from ..mesonlib import for_windows, for_darwin, for_cygwin
+from . import compilers
 
 from .compilers import (
     GCC_MINGW,
@@ -811,6 +812,12 @@ class ClangCCompiler(ClangCompiler, CCompiler):
     def get_option_link_args(self, options):
         return []
 
+    def get_linker_always_args(self):
+        basic = super().get_linker_always_args()
+        if self.clang_type == compilers.CLANG_OSX:
+            return basic + ['-Wl,-headerpad_max_install_names']
+        return basic
+
 
 class GnuCCompiler(GnuCompiler, CCompiler):
     def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None, defines=None):