support include paths for the Windows resource compiler

In RC_INCLUDEPATH one can add include paths for the Windows resource
compiler.

Task-number: QTBUG-13776

Change-Id: If1d9ed44097adb7789df03e4ccd4e3b7df9e8d08
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/qmake/generators/win32/winmakefile.cpp b/qmake/generators/win32/winmakefile.cpp
index fcc9ceb5aa..fc98c3ddd1 100644
--- a/qmake/generators/win32/winmakefile.cpp
+++ b/qmake/generators/win32/winmakefile.cpp
@@ -783,8 +783,20 @@ void Win32MakefileGenerator::writeRcFilePart(QTextStream &t)
         // use these defines in the .rc file itself. Also, we need to add the _DEBUG define manually
         // since the compiler defines this symbol by itself, and we use it in the automatically
         // created rc file when VERSION is define the .pro file.
+
+        const ProStringList rcIncPaths = project->values("RC_INCLUDEPATH");
+        QString incPathStr;
+        for (int i = 0; i < rcIncPaths.count(); ++i) {
+            const ProString &path = rcIncPaths.at(i);
+            if (path.isEmpty())
+                continue;
+            incPathStr += QStringLiteral(" /i ");
+            incPathStr += escapeFilePath(path);
+        }
+
         t << res_file << ": " << rc_file << "\n\t"
-          << var("QMAKE_RC") << (project->isActiveConfig("debug") ? " -D_DEBUG" : "") << " $(DEFINES) -fo " << res_file << " " << rc_file;
+          << var("QMAKE_RC") << (project->isActiveConfig("debug") ? " -D_DEBUG" : "")
+          << " $(DEFINES)" << incPathStr << " -fo " << res_file << " " << rc_file;
         t << endl << endl;
     }
 }