qdoc: Accept include paths without -I

This update lets qdoc accept include paths with or without the -I
and with or without a space between the -I and the path. Without
the space is preferred.

Task-number: QTBUG-74675
Change-Id: I4a1dcc04a3c9a6586e24b50bccf0f1f37d02ed4c
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
 
(cherry picked from commit e33ac6f1b1ebb882684f24f7d026267584d9393a)
 

1 files changed, 13 insertions, 2 deletions

diff --git a/src/qdoc/clangcodeparser.cpp b/src/qdoc/clangcodeparser.cpp
index 87c9282ce..407f67604 100644
--- a/src/qdoc/clangcodeparser.cpp
+++ b/src/qdoc/clangcodeparser.cpp
@@ -1021,8 +1021,19 @@ void ClangCodeParser::initializeParser(const Config &config)
     printParsingErrors_ = 1;
     version_ = config.getString(CONFIG_VERSION);
     const auto args = config.getStringList(CONFIG_INCLUDEPATHS);
-    includePaths_.resize(args.size());
-    std::transform(args.begin(), args.end(), includePaths_.begin(),
+    QStringList squeezedArgs;
+    int i = 0;
+    while (i < args.size()) {
+        if (args.at(i) != QLatin1String("-I")) {
+            if (args.at(i).startsWith(QLatin1String("-I")))
+                squeezedArgs << args.at(i);
+            else
+                squeezedArgs << QLatin1String("-I") + args.at(i);
+        }
+        i++;
+    }
+    includePaths_.resize(squeezedArgs.size());
+    std::transform(squeezedArgs.begin(), squeezedArgs.end(), includePaths_.begin(),
                    [](const QString &s) { return s.toUtf8(); });
     CppCodeParser::initializeParser(config);
     pchFileDir_.reset(nullptr);