make QMakeMetaInfo a little less inefficient with libtool .la files

don't read the spec from scratch for every library just to get
QMAKE_LFLAGS_RPATH. we can perfectly use our current project for that
purpose.

Change-Id: I4e408b3fd5de81652181df032aa53cd8f2f8f806
Reviewed-by: Joerg Bornemann <joerg.bornemann@nokia.com>

6 files changed, 10 insertions, 13 deletions

diff --git a/qmake/generators/mac/pbuilder_pbx.cpp b/qmake/generators/mac/pbuilder_pbx.cpp
index 27bc1e48fb..07224d8c43 100644
--- a/qmake/generators/mac/pbuilder_pbx.cpp
+++ b/qmake/generators/mac/pbuilder_pbx.cpp
@@ -815,7 +815,7 @@ ProjectBuilderMakefileGenerator::writeMakeParts(QTextStream &t)
                             */
                             QString lib_file = (*lit) + Option::dir_sep + lib;
                             if(QMakeMetaInfo::libExists(lib_file)) {
-                                QMakeMetaInfo libinfo;
+                                QMakeMetaInfo libinfo(project);
                                 if(libinfo.readLib(lib_file)) {
                                     if(!libinfo.isEmpty("QMAKE_PRL_TARGET")) {
                                         library = (*lit) + Option::dir_sep + libinfo.first("QMAKE_PRL_TARGET");
diff --git a/qmake/generators/makefile.cpp b/qmake/generators/makefile.cpp
index 8d0c78a861..79f9659536 100644
--- a/qmake/generators/makefile.cpp
+++ b/qmake/generators/makefile.cpp
@@ -888,7 +888,7 @@ MakefileGenerator::processPrlFile(QString &file)
     if(!meta_file.isEmpty()) {
         QString f = fileFixify(real_meta_file, qmake_getpwd(), Option::output_dir);
         if(QMakeMetaInfo::libExists(f)) {
-            QMakeMetaInfo libinfo;
+            QMakeMetaInfo libinfo(project);
             debug_msg(1, "Processing PRL file: %s", real_meta_file.toLatin1().constData());
             if(!libinfo.readLib(f)) {
                 fprintf(stderr, "Error processing meta file: %s\n", real_meta_file.toLatin1().constData());
diff --git a/qmake/generators/unix/unixmake2.cpp b/qmake/generators/unix/unixmake2.cpp
index 6e01da5baf..45ed14917f 100644
--- a/qmake/generators/unix/unixmake2.cpp
+++ b/qmake/generators/unix/unixmake2.cpp
@@ -353,7 +353,7 @@ UnixMakefileGenerator::writeMakeParts(QTextStream &t)
         const QStringList &l = project->values("QMAKE_PRL_INTERNAL_FILES");
         QStringList::ConstIterator it;
         for(it = l.begin(); it != l.end(); ++it) {
-            QMakeMetaInfo libinfo;
+            QMakeMetaInfo libinfo(project);
             if(libinfo.readLib((*it)) && !libinfo.isEmpty("QMAKE_PRL_BUILD_DIR")) {
                 QString dir;
                 int slsh = (*it).lastIndexOf(Option::dir_sep);
diff --git a/qmake/generators/win32/winmakefile.cpp b/qmake/generators/win32/winmakefile.cpp
index b49ce82a92..b3c998bb53 100644
--- a/qmake/generators/win32/winmakefile.cpp
+++ b/qmake/generators/win32/winmakefile.cpp
@@ -64,7 +64,7 @@ Win32MakefileGenerator::findHighestVersion(const QString &d, const QString &stem
     if(!exists(bd))
         return -1;
 
-    QMakeMetaInfo libinfo;
+    QMakeMetaInfo libinfo(project);
     bool libInfoRead = libinfo.readLib(bd + Option::dir_sep + stem);
 
     // If the library, for which we're trying to find the highest version
diff --git a/qmake/meta.cpp b/qmake/meta.cpp
index 3ec3f8357b..717da74704 100644
--- a/qmake/meta.cpp
+++ b/qmake/meta.cpp
@@ -48,7 +48,8 @@ QT_BEGIN_NAMESPACE
 
 QHash<QString, QHash<QString, QStringList> > QMakeMetaInfo::cache_vars;
 
-QMakeMetaInfo::QMakeMetaInfo()
+QMakeMetaInfo::QMakeMetaInfo(QMakeProject *_conf)
+    : conf(_conf)
 {
 
 }
@@ -180,19 +181,12 @@ QMakeMetaInfo::readLibtoolFile(const QString &f)
                     dep = dep.mid(1, dep.length() - 2);
                 lst = dep.trimmed().split(" ");
             }
-            QMakeProject *conf = NULL;
             for(QStringList::Iterator lit = lst.begin(); lit != lst.end(); ++lit) {
                 if((*lit).startsWith("-R")) {
-                    if(!conf) {
-                        conf = new QMakeProject;
-                        conf->read(QMakeProject::ReadAll ^ QMakeProject::ReadProFile);
-                    }
                     if(!conf->isEmpty("QMAKE_LFLAGS_RPATH"))
                         (*lit) = conf->first("QMAKE_LFLAGS_RPATH") + (*lit).mid(2);
                 }
             }
-            if(conf)
-                delete conf;
             vars["QMAKE_PRL_LIBS"] += lst;
         }
     }
diff --git a/qmake/meta.h b/qmake/meta.h
index 71d7f5f2de..bfdb1088dc 100644
--- a/qmake/meta.h
+++ b/qmake/meta.h
@@ -48,16 +48,19 @@
 
 QT_BEGIN_NAMESPACE
 
+class QMakeProject;
+
 class QMakeMetaInfo
 {
     bool readLibtoolFile(const QString &f);
     bool readPkgCfgFile(const QString &f);
+    QMakeProject *conf;
     QHash<QString, QStringList> vars;
     QString meta_type;
     static QHash<QString, QHash<QString, QStringList> > cache_vars;
     void clear();
 public:
-    QMakeMetaInfo();
+    QMakeMetaInfo(QMakeProject *_conf);
 
     bool readLib(QString lib);
     static QString findLib(QString lib);