only build the nis module when the headers are found #7589

Misc/NEWS

@@ -83,6 +83,9 @@ C-API
 Build
 -----
 
+- Issue #7589: Only build the nis module when the correct header files are
+  found.
+
 - Switch to OpenSSL 0.9.8l on Windows.
 
 - Issue #7541: when using ``python-config`` with a framework install the compiler might

setup.py

@@ -1088,7 +1088,7 @@ class PyBuildExt(build_ext):
                 missing.append('resource')
 
             # Sun yellow pages. Some systems have the functions in libc.
-            if platform not in ['cygwin', 'atheos', 'qnx6']:
+            if platform not in ['cygwin', 'atheos', 'qnx6'] and find_file('rpcsvc/yp_prot.h', inc_dirs, []) is not None:
                 if (self.compiler_obj.find_library_file(lib_dirs, 'nsl')):
                     libs = ['nsl']
                 else: