scripts: check minimum required Windows version is set

We use linker flags (-Wl,--major/minor-subsystem-version) to set the
minimum required version of Windows needed to run our binaries. This
adds a sanity check that the version is being set as expected.

Author: fanquake

contrib/devtools/symbol-check.py

@@ -227,6 +227,14 @@ def check_PE_libraries(filename) -> bool:
             ok = False
     return ok
 
+def check_PE_subsystem_version(filename) -> bool:
+    binary = lief.parse(filename)
+    major: int = binary.optional_header.major_subsystem_version
+    minor: int = binary.optional_header.minor_subsystem_version
+    if major == 6 and minor == 1:
+        return True
+    return False
+
 CHECKS = {
 'ELF': [
     ('IMPORTED_SYMBOLS', check_imported_symbols),
@@ -238,7 +246,8 @@ def check_PE_libraries(filename) -> bool:
     ('MIN_OS', check_MACHO_min_os),
 ],
 'PE' : [
-    ('DYNAMIC_LIBRARIES', check_PE_libraries)
+    ('DYNAMIC_LIBRARIES', check_PE_libraries),
+    ('SUBSYSTEM_VERSION', check_PE_subsystem_version),
 ]
 }
 

contrib/devtools/test-symbol-check.py

@@ -145,12 +145,26 @@ def test_PE(self):
                 }
         ''')
 
-        self.assertEqual(call_symbol_check(cc, source, executable, ['-lpdh']),
+        self.assertEqual(call_symbol_check(cc, source, executable, ['-lpdh', '-Wl,--major-subsystem-version', '-Wl,6', '-Wl,--minor-subsystem-version', '-Wl,1']),
             (1, 'pdh.dll is not in ALLOWED_LIBRARIES!\n' +
                  executable + ': failed DYNAMIC_LIBRARIES'))
 
         source = 'test2.c'
         executable = 'test2.exe'
+
+        with open(source, 'w', encoding="utf8") as f:
+            f.write('''
+                int main()
+                {
+                    return 0;
+                }
+        ''')
+
+        self.assertEqual(call_symbol_check(cc, source, executable, ['-Wl,--major-subsystem-version', '-Wl,9', '-Wl,--minor-subsystem-version', '-Wl,9']),
+            (1, executable + ': failed SUBSYSTEM_VERSION'))
+
+        source = 'test3.c'
+        executable = 'test3.exe'
         with open(source, 'w', encoding="utf8") as f:
             f.write('''
                 #include <windows.h>
@@ -162,7 +176,7 @@ def test_PE(self):
                 }
         ''')
 
-        self.assertEqual(call_symbol_check(cc, source, executable, ['-lole32']),
+        self.assertEqual(call_symbol_check(cc, source, executable, ['-lole32', '-Wl,--major-subsystem-version', '-Wl,6', '-Wl,--minor-subsystem-version', '-Wl,1']),
                 (0, ''))