2 files changed, 23 insertions, 8 deletions
diff --git a/qmake/generators/unix/unixmake.cpp b/qmake/generators/unix/unixmake.cpp
index 1d9ebb35e3..57c0a97228 100644
--- a/qmake/generators/unix/unixmake.cpp
+++ b/qmake/generators/unix/unixmake.cpp
@@ -125,10 +125,23 @@ UnixMakefileGenerator::init()
         const ProStringList &rpathdirs = project->values("QMAKE_RPATHDIR");
         for (int i = 0; i < rpathdirs.size(); ++i) {
             QString rpathdir = rpathdirs[i].toQString();
-            if (rpathdir.length() > 1 && rpathdir.at(0) == '$' && rpathdir.at(1) != '(')
+            if (rpathdir.length() > 1 && rpathdir.at(0) == '$' && rpathdir.at(1) != '(') {
                 rpathdir.replace(0, 1, "\\$$");  // Escape from make and the shell
-            else if (!rpathdir.startsWith('@'))
-                rpathdir = QFileInfo(rpathdir).absoluteFilePath();
+            } else if (!rpathdir.startsWith('@') && fileInfo(rpathdir).isRelative()) {
+                QString rpathbase = project->first("QMAKE_REL_RPATH_BASE").toQString();
+                if (rpathbase.isEmpty()) {
+                    fprintf(stderr, "Error: This platform does not support relative paths in QMAKE_RPATHDIR (%s)\n",
+                                    rpathdir.toLatin1().constData());
+                    continue;
+                }
+                if (rpathbase.startsWith('$'))
+                    rpathbase.replace(0, 1, "\\$$");  // Escape from make and the shell
+                if (rpathdir == ".")
+                    rpathdir = rpathbase;
+                else
+                    rpathdir.prepend(rpathbase + '/');
+                project->values("QMAKE_LFLAGS").insertUnique(project->values("QMAKE_LFLAGS_REL_RPATH"));
+            }
             project->values("QMAKE_LFLAGS") += var("QMAKE_LFLAGS_RPATH") + escapeFilePath(rpathdir);
         }
     }
diff --git a/qmake/generators/unix/unixmake2.cpp b/qmake/generators/unix/unixmake2.cpp
index d0cd5d2354..9db64bebee 100644
--- a/qmake/generators/unix/unixmake2.cpp
+++ b/qmake/generators/unix/unixmake2.cpp
@@ -262,11 +262,13 @@ UnixMakefileGenerator::writeMakeParts(QTextStream &t)
     t << "DIST          = " << valList(fileFixify(project->values("DISTFILES").toQStringList())) << " "
                             << fileVarList("HEADERS") << ' ' << fileVarList("SOURCES") << endl;
     t << "QMAKE_TARGET  = " << fileVar("QMAKE_ORIG_TARGET") << endl;
-    // The comment is important for mingw32-make.exe on Windows as otherwise trailing slashes
-    // would be interpreted as line continuation. The lack of spacing between the value and the
-    // comment is also important as otherwise quoted use of "$(DESTDIR)" would include this
-    // spacing.
-    t << "DESTDIR       = " << fileVar("DESTDIR") << "#avoid trailing-slash linebreak\n";
+    QString destd = fileVar("DESTDIR");
+    // When building on non-MSys MinGW, the path ends with a backslash, which
+    // GNU make will interpret that as a line continuation. Doubling the backslash
+    // avoids the problem, at the cost of the variable containing *both* backslashes.
+    if (destd.endsWith('\\'))
+        destd += '\\';
+    t << "DESTDIR       = " << destd << endl;
     t << "TARGET        = " << fileVar("TARGET") << endl; // ### mixed use!
     if(project->isActiveConfig("plugin")) {
         t << "TARGETD       = " << fileVar("TARGET") << endl;