add indirect input/output specification capability to QMAKE_SUBSTITUTES

like in SUBDIRS, the specified strings can now be basenames of
"structures" which specify the actual input and output files:

QMAKE_SUBSTITUTES += test
test.input = infile.txt.in
test.output = foobar.out

Reviewed-by: joerg

1 files changed, 30 insertions, 7 deletions

diff --git a/qmake/generators/makefile.cpp b/qmake/generators/makefile.cpp
index 852471d..03732ba 100644
--- a/qmake/generators/makefile.cpp
+++ b/qmake/generators/makefile.cpp
@@ -466,14 +466,37 @@ MakefileGenerator::init()
     if(!project->isEmpty("QMAKE_SUBSTITUTES")) {
         const QStringList &subs = v["QMAKE_SUBSTITUTES"];
         for(int i = 0; i < subs.size(); ++i) {
-            if(!subs.at(i).endsWith(".in")) {
-                warn_msg(WarnLogic, "Substitute '%s' does not end with '.in'",
-                         subs.at(i).toLatin1().constData());
-                continue;
+            QString inn = subs.at(i) + ".input", outn = subs.at(i) + ".output";
+            if (v.contains(inn) || v.contains(outn)) {
+                if (!v.contains(inn) || !v.contains(outn)) {
+                    warn_msg(WarnLogic, "Substitute '%s' has only one of .input and .output",
+                             subs.at(i).toLatin1().constData());
+                    continue;
+                }
+                const QStringList &tinn = v[inn], &toutn = v[outn];
+                if (tinn.length() != 1) {
+                    warn_msg(WarnLogic, "Substitute '%s.input' does not have exactly one value",
+                             subs.at(i).toLatin1().constData());
+                    continue;
+                }
+                if (toutn.length() != 1) {
+                    warn_msg(WarnLogic, "Substitute '%s.output' does not have exactly one value",
+                             subs.at(i).toLatin1().constData());
+                    continue;
+                }
+                inn = tinn.first();
+                outn = toutn.first();
+            } else {
+                inn = subs.at(i);
+                if(!inn.endsWith(".in")) {
+                    warn_msg(WarnLogic, "Substitute '%s' does not end with '.in'",
+                             inn.toLatin1().constData());
+                    continue;
+                }
+                outn = inn.left(inn.length()-3);
             }
-            QFile in(fileFixify(subs.at(i)));
-            QFile out(fileFixify(subs.at(i).left(subs.at(i).length()-3),
-                                 qmake_getpwd(), Option::output_dir));
+            QFile in(fileFixify(inn));
+            QFile out(fileFixify(outn, qmake_getpwd(), Option::output_dir));
             if(in.open(QFile::ReadOnly)) {
                 QString contents;
                 QStack<int> state;