Preserve last modification timestamps of installed directories

Similar to the two parent commits, this patchs preserves the time stamps
of files we install as a result of recursive directory copying.

Change-Id: Id5931a467196d5cd67acfa0deffc2488af8a3669
Task-number: QTBUG-59004
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>

6 files changed, 103 insertions, 28 deletions

diff --git a/qmake/generators/makefile.cpp b/qmake/generators/makefile.cpp
index 9f0655a2b9..c76708285a 100644
--- a/qmake/generators/makefile.cpp
+++ b/qmake/generators/makefile.cpp
@@ -1283,14 +1283,12 @@ MakefileGenerator::writeInstalls(QTextStream &t, bool noBuild)
                 if(is_target || exists(wild)) { //real file or target
                     QFileInfo fi(fileInfo(wild));
                     QString dst_file = filePrefixRoot(root, dst_dir);
-                    if (!fi.isDir() || project->isActiveConfig("copy_dir_files")) {
-                        if(!dst_file.endsWith(Option::dir_sep))
-                            dst_file += Option::dir_sep;
-                        dst_file += fi.fileName();
-                    }
+                    if (!dst_file.endsWith(Option::dir_sep))
+                        dst_file += Option::dir_sep;
+                    dst_file += fi.fileName();
                     QString cmd;
                     if (fi.isDir())
-                       cmd = "-$(INSTALL_DIR)";
+                       cmd = "-$(QINSTALL_DIR)";
                     else if (is_target || fi.isExecutable())
                        cmd = "-$(QINSTALL_PROGRAM)";
                     else
@@ -1310,22 +1308,15 @@ MakefileGenerator::writeInstalls(QTextStream &t, bool noBuild)
                 if (installConfigValues.contains("no_check_exist") && files.isEmpty()) {
                     QString dst_file = filePrefixRoot(root, dst_dir);
                     QString cmd;
+                    if (!dst_file.endsWith(Option::dir_sep))
+                        dst_file += Option::dir_sep;
+                    dst_file += filestr;
                     if (installConfigValues.contains("directory")) {
-                        cmd = QLatin1String("-$(INSTALL_DIR)");
-                        if (project->isActiveConfig("copy_dir_files")) {
-                            if (!dst_file.endsWith(Option::dir_sep))
-                                dst_file += Option::dir_sep;
-                            dst_file += filestr;
-                        }
+                        cmd = QLatin1String("-$(QINSTALL_DIR)");
+                    } else if (installConfigValues.contains("executable")) {
+                        cmd = QLatin1String("-$(QINSTALL_PROGRAM)");
                     } else {
-                        if (installConfigValues.contains("executable")) {
-                            cmd = QLatin1String("-$(QINSTALL_PROGRAM)");
-                        } else {
-                            cmd = QLatin1String("-$(QINSTALL_FILE)");
-                        }
-                        if (!dst_file.endsWith(Option::dir_sep))
-                            dst_file += Option::dir_sep;
-                        dst_file += filestr;
+                        cmd = QLatin1String("-$(QINSTALL_FILE)");
                     }
                     cmd += " " + escapeFilePath(wild) + " " + escapeFilePath(dst_file);
                     inst << cmd;
@@ -1336,12 +1327,10 @@ MakefileGenerator::writeInstalls(QTextStream &t, bool noBuild)
                     uninst.append(rm_dir_contents + " " + escapeFilePath(filePrefixRoot(root, fileFixify(dst_dir + file, FileFixifyAbsolute, false))));
                     QFileInfo fi(fileInfo(dirstr + file));
                     QString dst_file = filePrefixRoot(root, fileFixify(dst_dir, FileFixifyAbsolute, false));
-                    if (!fi.isDir() || project->isActiveConfig("copy_dir_files")) {
-                        if(!dst_file.endsWith(Option::dir_sep))
-                            dst_file += Option::dir_sep;
-                        dst_file += fi.fileName();
-                    }
-                    QString cmd = QString(fi.isDir() ? "-$(INSTALL_DIR)" : "-$(QINSTALL_FILE)") + " " +
+                    if (!dst_file.endsWith(Option::dir_sep))
+                        dst_file += Option::dir_sep;
+                    dst_file += fi.fileName();
+                    QString cmd = QString(fi.isDir() ? "-$(QINSTALL_DIR)" : "-$(QINSTALL_FILE)") + " " +
                                   escapeFilePath(dirstr + file) + " " + escapeFilePath(dst_file);
                     inst << cmd;
                     if (!project->isActiveConfig("debug_info") && !project->isActiveConfig("nostrip") &&
@@ -2255,6 +2244,7 @@ MakefileGenerator::writeDefaultVariables(QTextStream &t)
     t << "INSTALL_DIR   = " << var("QMAKE_INSTALL_DIR") << endl;
     t << "QINSTALL_FILE = " << var("QMAKE_QMAKE") << " -install qinstall file" << endl;
     t << "QINSTALL_PROGRAM = " << var("QMAKE_QMAKE") << " -install qinstall program" << endl;
+    t << "QINSTALL_DIR  = " << var("QMAKE_QMAKE") << " -install qinstall directory" << endl;
     t << "DEL_FILE      = " << var("QMAKE_DEL_FILE") << endl;
     t << "SYMLINK       = " << var("QMAKE_SYMBOLIC_LINK") << endl;
     t << "DEL_DIR       = " << var("QMAKE_DEL_DIR") << endl;
diff --git a/qmake/generators/unix/unixmake.cpp b/qmake/generators/unix/unixmake.cpp
index 1073386a82..20318f120c 100644
--- a/qmake/generators/unix/unixmake.cpp
+++ b/qmake/generators/unix/unixmake.cpp
@@ -636,7 +636,7 @@ UnixMakefileGenerator::defaultInstall(const QString &t)
 
         QString copy_cmd;
         if (bundle == SolidBundle) {
-            copy_cmd += "-$(INSTALL_DIR) " + src_targ + ' ' + plain_targ;
+            copy_cmd += "-$(QINSTALL_DIR) " + src_targ + ' ' + plain_targ;
         } else if (project->first("TEMPLATE") == "lib" && project->isActiveConfig("staticlib")) {
             copy_cmd += "-$(QINSTALL_FILE) " + src_targ + ' ' + dst_targ;
         } else if (!isAux) {
@@ -698,7 +698,7 @@ UnixMakefileGenerator::defaultInstall(const QString &t)
                     ret += "\n\t";
                 ret += mkdir_p_asstring("\"`dirname " + dst + "`\"", false) + "\n\t";
                 ret += "-$(DEL_FILE) " + dst + "\n\t"; // Can't overwrite symlinks to directories
-                ret += "-$(INSTALL_DIR) " + escapeFilePath(src) + " " + dst; // Use cp -R to copy symlinks
+                ret += "-$(QINSTALL_DIR) " + escapeFilePath(src) + " " + dst;
                 if (!uninst.isEmpty())
                     uninst.append("\n\t");
                 uninst.append("-$(DEL_FILE) " + dst);
diff --git a/qmake/generators/win32/winmakefile.cpp b/qmake/generators/win32/winmakefile.cpp
index 86d388354a..2013698c99 100644
--- a/qmake/generators/win32/winmakefile.cpp
+++ b/qmake/generators/win32/winmakefile.cpp
@@ -532,6 +532,7 @@ void Win32MakefileGenerator::writeStandardParts(QTextStream &t)
     t << "INSTALL_DIR     = " << var("QMAKE_INSTALL_DIR") << endl;
     t << "QINSTALL_FILE   = " << var("QMAKE_QMAKE") << " -install qinstall file" << endl;
     t << "QINSTALL_PROGRAM = " << var("QMAKE_QMAKE") << " -install qinstall program" << endl;
+    t << "QINSTALL_DIR     = " << var("QMAKE_QMAKE") << " -install qinstall directory" << endl;
     t << endl;
 
     t << "####### Output directory\n\n";
diff --git a/qmake/library/ioutils.cpp b/qmake/library/ioutils.cpp
index 39264952c6..684bcb9a37 100644
--- a/qmake/library/ioutils.cpp
+++ b/qmake/library/ioutils.cpp
@@ -253,4 +253,39 @@ bool IoUtils::touchFile(const QString &targetFileName, const QString &referenceF
 }
 #endif
 
+#ifdef Q_OS_UNIX
+bool IoUtils::readLinkTarget(const QString &symlinkPath, QString *target)
+{
+    const QByteArray localSymlinkPath = QFile::encodeName(symlinkPath);
+#  if defined(__GLIBC__) && !defined(PATH_MAX)
+#    define PATH_CHUNK_SIZE 256
+    char *s = 0;
+    int len = -1;
+    int size = PATH_CHUNK_SIZE;
+
+    forever {
+        s = (char *)::realloc(s, size);
+        len = ::readlink(localSymlinkPath.constData(), s, size);
+        if (len < 0) {
+            ::free(s);
+            break;
+        }
+        if (len < size)
+            break;
+        size *= 2;
+    }
+#  else
+    char s[PATH_MAX+1];
+    int len = readlink(localSymlinkPath.constData(), s, PATH_MAX);
+#  endif
+    if (len <= 0)
+        return false;
+    *target = QFile::decodeName(QByteArray(s, len));
+#  if defined(__GLIBC__) && !defined(PATH_MAX)
+    ::free(s);
+#  endif
+    return true;
+}
+#endif
+
 QT_END_NAMESPACE
diff --git a/qmake/library/ioutils.h b/qmake/library/ioutils.h
index 905974b7cb..ad379404f3 100644
--- a/qmake/library/ioutils.h
+++ b/qmake/library/ioutils.h
@@ -65,6 +65,9 @@ public:
 #if defined(PROEVALUATOR_FULL)
     static bool touchFile(const QString &targetFileName, const QString &referenceFileName, QString *errorString);
 #endif
+#ifdef Q_OS_UNIX
+    static bool readLinkTarget(const QString &symlinkPath, QString *target);
+#endif
 };
 
 } // namespace ProFileEvaluatorInternal
diff --git a/qmake/main.cpp b/qmake/main.cpp
index cc72645b59..f25b128d03 100644
--- a/qmake/main.cpp
+++ b/qmake/main.cpp
@@ -36,6 +36,7 @@
 #include <qdebug.h>
 #include <qregexp.h>
 #include <qdir.h>
+#include <qdiriterator.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -43,6 +44,11 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#if defined(Q_OS_UNIX)
+#include <errno.h>
+#include <unistd.h>
+#endif
+
 #ifdef Q_OS_WIN
 #  include <qt_windows.h>
 #endif
@@ -267,6 +273,44 @@ static int installFile(const QString &source, const QString &target, bool exe =
     return 0;
 }
 
+static int installDirectory(const QString &source, const QString &target)
+{
+    QFileInfo fi(source);
+    if (false) {
+#if defined(Q_OS_UNIX)
+    } else if (fi.isSymLink()) {
+        QString linkTarget;
+        if (!IoUtils::readLinkTarget(fi.absoluteFilePath(), &linkTarget)) {
+            fprintf(stderr, "Could not read link %s: %s\n", qPrintable(fi.absoluteFilePath()), strerror(errno));
+            return 3;
+        }
+        QFile::remove(target);
+        if (::symlink(linkTarget.toLocal8Bit().constData(), target.toLocal8Bit().constData()) < 0) {
+            fprintf(stderr, "Could not create link: %s\n", strerror(errno));
+            return 3;
+        }
+#endif
+    } else if (fi.isDir()) {
+        QDir::current().mkpath(target);
+
+        QDirIterator it(source, QDir::AllEntries | QDir::NoDotAndDotDot);
+        while (it.hasNext()) {
+            it.next();
+            const QFileInfo &entry = it.fileInfo();
+            const QString &entryTarget = target + QDir::separator() + entry.fileName();
+
+            const int recursionResult = installDirectory(entry.filePath(), entryTarget);
+            if (recursionResult != 0)
+                return recursionResult;
+        }
+    } else {
+        const int fileCopyResult = installFile(source, target);
+        if (fileCopyResult != 0)
+            return fileCopyResult;
+    }
+    return 0;
+}
+
 static int doQInstall(int argc, char **argv)
 {
     if (argc != 3) {
@@ -281,6 +325,8 @@ static int doQInstall(int argc, char **argv)
         return installFile(source, target);
     if (!strcmp(argv[0], "program"))
         return installFile(source, target, /*exe=*/true);
+    if (!strcmp(argv[0], "directory"))
+        return installDirectory(source, target);
 
     fprintf(stderr, "Error: Unsupported qinstall command type %s\n", argv[0]);
     return 3;