Fix dependency_libs entry of .la files

Libtool cannot cope with absolute paths in the dependency_libs entry.
We split absolute paths into -L and -l here.

Change-Id: I30bf11e490d1993d2a4d88c114e07bbae12def6d
Fixes: QTBUG-76625
Reviewed-by: Kai Koehne <kai.koehne@qt.io>

1 files changed, 33 insertions, 5 deletions

diff --git a/qmake/generators/unix/unixmake2.cpp b/qmake/generators/unix/unixmake2.cpp
index d9bcccf2e2..abc37149a9 100644
--- a/qmake/generators/unix/unixmake2.cpp
+++ b/qmake/generators/unix/unixmake2.cpp
@@ -1450,7 +1450,36 @@ UnixMakefileGenerator::libtoolFileName(bool fixify)
 void
 UnixMakefileGenerator::writeLibtoolFile()
 {
+    auto fixDependencyLibs
+            = [this](const ProStringList &libs)
+              {
+                  ProStringList result;
+                  for (auto lib : libs) {
+                      auto fi = fileInfo(lib.toQString());
+                      if (fi.isAbsolute()) {
+                          const QString libDirArg = "-L" + fi.path();
+                          if (!result.contains(libDirArg))
+                              result += libDirArg;
+                          QString namespec = fi.fileName();
+                          int dotPos = namespec.lastIndexOf('.');
+                          if (dotPos != -1 && namespec.startsWith("lib")) {
+                              namespec.truncate(dotPos);
+                              namespec.remove(0, 3);
+                          } else {
+                              debug_msg(1, "Ignoring dependency library %s",
+                                        lib.toLatin1().constData());
+                              continue;
+                          }
+                          result += "-l" + namespec;
+                      } else {
+                          result += lib;
+                      }
+                  }
+                  return result;
+              };
+
     QString fname = libtoolFileName(), lname = fname;
+    debug_msg(1, "Writing libtool file %s", fname.toLatin1().constData());
     mkdir(fileInfo(fname).path());
     int slsh = lname.lastIndexOf(Option::dir_sep);
     if(slsh != -1)
@@ -1488,12 +1517,11 @@ UnixMakefileGenerator::writeLibtoolFile()
                          << ".a'\n\n";
 
     t << "# Libraries that this one depends upon.\n";
+    static const ProKey libVars[] = { "LIBS", "QMAKE_LIBS" };
     ProStringList libs;
-    libs << "LIBS" << "QMAKE_LIBS";
-    t << "dependency_libs='";
-    for (ProStringList::ConstIterator it = libs.begin(); it != libs.end(); ++it)
-        t << fixLibFlags((*it).toKey()).join(' ') << ' ';
-    t << "'\n\n";
+    for (auto var : libVars)
+        libs += fixLibFlags(var);
+    t << "dependency_libs='" << fixDependencyLibs(libs).join(' ') << "'\n\n";
 
     t << "# Version information for " << lname << "\n";
     int maj = project->first("VER_MAJ").toInt();