From 5ed471a80a5a88b26db31adf7bc673b5026cc907 Mon Sep 17 00:00:00 2001
From: Ulf Hermann <ulf.hermann@qt.io>
Date: Mon, 5 Nov 2018 15:13:22 +0100
Subject: [PATCH] qmake: Escape '=' in dependency paths for unix make

'=' cannot be handled in the same manner as other "critical" characters
as no amount of backslashes will escape it. Use a variable instead.

The documentation for nmake suggests that '=' in file names is not among
the "Special Characters in a Makefile". Therefore, we assume nmake can
handle it and don't escape it.

Fixes: QTBUG-67262
Change-Id: Ib60f808d7d4e981c98f7d8bf2075d55b2b7f3b7d
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Michael Brasser <michael.brasser@live.com>
---
 qmake/generators/makefile.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qmake/generators/makefile.cpp b/qmake/generators/makefile.cpp
index b7e591d2ab..7247d1f8df 100644
--- a/qmake/generators/makefile.cpp
+++ b/qmake/generators/makefile.cpp
@@ -2325,6 +2325,7 @@ MakefileGenerator::writeHeader(QTextStream &t)
     if (ofile.lastIndexOf(Option::dir_sep) != -1)
         ofile.remove(0, ofile.lastIndexOf(Option::dir_sep) +1);
     t << "MAKEFILE      = " << escapeFilePath(ofile) << endl << endl;
+    t << "EQ            = =\n\n";
 }
 
 QList<MakefileGenerator::SubTarget*>
@@ -2869,6 +2870,7 @@ MakefileGenerator::escapeDependencyPath(const QString &path) const
         static const QRegExp criticalChars(QStringLiteral("([\t #])"));
 #endif
         ret.replace(criticalChars, QStringLiteral("\\\\1"));
+        ret.replace(QLatin1Char('='), QStringLiteral("$(EQ)"));
         debug_msg(2, "escapeDependencyPath: %s -> %s", path.toLatin1().constData(), ret.toLatin1().constData());
     }
     return ret;