configure: Allow libraries to be defined with exact filename

INTEGRITY compiler searches for exact filename if the -l argument already
contains .a suffix. GNU linker uses exact filename if -l argument begins
with a colon.

Change-Id: I62be8f1e6b9c7dc7eaa5ab3d4bfc55460d729737
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>

mkspecs/features/qt_configure.prf

@@ -540,7 +540,15 @@ defineTest(qtConfResolveLibs) {
         } else: contains(l, "^-l.*") {
             lib = $$replace(l, "^-l", )
             lcan =
-            unix {
+            integrity:contains(lib, "^.*\\.a") {
+                # INTEGRITY compiler searches for exact filename
+                # if -l argument has .a suffix
+                lcan += $${lib}
+            } else: contains(lib, "^:.*") {
+                # Use exact filename when -l:filename syntax is used.
+                lib ~= s/^://
+                lcan += $${lib}
+            } else: unix {
                 # Under UNIX, we look for actual shared libraries, in addition
                 # to static ones.
                 shexts = $$QMAKE_EXTENSION_SHLIB $$QMAKE_EXTENSIONS_AUX_SHLIB