1 files changed, 87 insertions, 0 deletions
diff --git a/util/build_scripts/check-dllexport-usage.py b/util/build_scripts/check-dllexport-usage.py
new file mode 100644
index 0000000..09875ad
--- /dev/null
+++ b/util/build_scripts/check-dllexport-usage.py
@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+#
+# Check for the first line in a file generated with gmmproc,
+# to see which gmmproc version was used, to see whether
+# to enable __declspec(dllexport to export symbols).  This
+# is *not* intended for source files that are not generated
+# with gmmproc.
+#
+# Author: Chun-wei Fan April 2, 2020
+
+import argparse
+import os
+import sys
+
+min_required_gmmproc_ver = '2.64.3'
+
+parser = argparse.ArgumentParser(description='Check gmmproc version used.')
+parser.add_argument('--file',
+                    dest='file',
+                    help='Generated .cc/.h file to check gmmproc version')
+parser.add_argument('--gmmprocdir',
+                    dest='gmmprocdir',
+                    help='Directory where gmmproc is located')
+args = parser.parse_args()
+
+if args.file is None and args.gmmprocdir is None:
+    raise ValueError('Either --file or --gmmprocdir must be specified')
+
+if args.gmmprocdir is not None:
+    # gmmprocdir is specified: Check version string in gmmproc
+    gmmproc_path = os.path.join(args.gmmprocdir, 'gmmproc')
+    if not os.path.exists(gmmproc_path):
+        raise ValueError('A valid directory to locate gmmproc must be ' \
+                         'specified with --gmmprocdir=<directory>')
+
+    gmmproc_ver_str = None
+    with open(gmmproc_path, 'r') as f:
+        for line in f:
+            if line.startswith('  $main::glibmm_version = '):
+                gmmproc_ver_str = line[line.find('\"') + 1:line.rfind('\"')]
+
+    if gmmproc_ver_str is None:
+        raise ValueError('The gmmproc at %s is invalid' % gmmproc_path)
+
+    gmmproc_ver = gmmproc_ver_str.split('.')
+else:
+    # A pre-generated file is specified via --file
+    if not os.path.exists(args.file):
+        raise FileNotFoundError('File specified with --file does not exist')
+
+    # We only allow .h/.cc files to run this check
+    if not args.file.endswith('.cc') and \
+       not args.file.endswith('.h'):
+        raise ValueError('Only .cc/.h files are accepted here')
+
+    # Now grab the first line of the file we are checking for
+    f = open(args.file)
+    firstline = f.readline()
+    f.close()
+
+    # Check for gmmproc signature...
+    if not firstline.startswith('// Generated by gmmproc '):
+       raise ValueError('Specified file is not generated by gmmproc')
+
+    tokens = firstline.split()
+    gmmproc_ver = tokens[tokens.index('gmmproc') + 1].split('.')
+
+# Now compare the gmmproc version against the one we want
+# (2.64.3 or later)
+gmmproc_major = int(gmmproc_ver[0])
+gmmproc_minor = int(gmmproc_ver[1])
+gmmproc_micro = int(gmmproc_ver[2])
+
+min_required_ver = min_required_gmmproc_ver.split('.')
+min_major_ver = int(min_required_ver[0])
+min_minor_ver = int(min_required_ver[1])
+min_micro_ver = int(min_required_ver[2])
+
+if gmmproc_major > min_major_ver or \
+   (gmmproc_major == min_major_ver and \
+    gmmproc_minor > min_minor_ver) or \
+   (gmmproc_major == min_major_ver and \
+    gmmproc_minor == min_minor_ver and \
+    gmmproc_micro >= min_micro_ver):
+    sys.exit(0)
+else:
+    sys.exit(1)