qmake: Introduce QT_HOST_LIBEXECS property

This will be used to access host tools that are installed in
${prefix}/libexec instead of ${prefix}/bin.

Change-Id: I36c4b5736330f8229d267a117c65d55cd5e12758
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
(cherry picked from commit edd122548940a0213e35d11649566efbef7f1fea)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

cmake/QtQmakeHelpers.cmake

@@ -56,6 +56,7 @@ function(qt_generate_qconfig_cpp)
     qt_add_string_to_qconfig_cpp("") # config.input.sysroot
     qt_add_string_to_qconfig_cpp("false") # qmake_sysrootify
     qt_add_string_to_qconfig_cpp("${INSTALL_BINDIR}")
+    qt_add_string_to_qconfig_cpp("${INSTALL_LIBEXECDIR}")
     qt_add_string_to_qconfig_cpp("${INSTALL_LIBDIR}")
     qt_add_string_to_qconfig_cpp("${hostdatadir}")
     qt_add_string_to_qconfig_cpp("${QT_QMAKE_TARGET_MKSPEC}")

mkspecs/features/qt_config.prf

@@ -26,6 +26,7 @@ QMAKE_QT_CONFIG = $$[QT_HOST_DATA/get]/mkspecs/qconfig.pri
          QT_MODULE_INCLUDE_BASE = $$[QT_INSTALL_HEADERS]
          QT_MODULE_LIB_BASE = $$[QT_INSTALL_LIBS]
          QT_MODULE_HOST_LIB_BASE = $$[QT_HOST_LIBS]
+         QT_MODULE_HOST_LIBEXEC_BASE = $$[QT_HOST_LIBEXECS]
          QT_MODULE_BIN_BASE = $$[QT_INSTALL_BINS]
          include($$mod)
       }
@@ -35,8 +36,8 @@ QMAKE_QT_CONFIG = $$[QT_HOST_DATA/get]/mkspecs/qconfig.pri
    unset(QT_MODULE_INCLUDE_BASE)
    unset(QT_MODULE_LIB_BASE)
    unset(QT_MODULE_HOST_LIB_BASE)
+   unset(QT_MODULE_HOST_LIBEXEC_BASE)
    unset(QT_MODULE_BIN_BASE)
 }
 
 load(qt_functions)
-

qmake/doc/src/qmake-manual.qdoc

@@ -4312,6 +4312,9 @@
             and stored in the \l{QMAKESPEC} variable during a target build
         \li QT_HOST_BINS - location of host executables
         \li QT_HOST_DATA - location of data for host executables used by qmake
+        \li QT_HOST_LIBS - location of host libraries
+        \li QT_HOST_LIBEXECS - location of executables required by host
+            libraries at runtime
         \li QT_HOST_PREFIX - default prefix for all host paths
         \li QT_INSTALL_ARCHDATA - location of general architecture-dependent Qt
             data

qmake/property.cpp

@@ -63,6 +63,7 @@ static const struct {
     { "QT_HOST_DATA", QLibraryInfo::HostDataPath, true, false },
     { "QT_HOST_BINS", QLibraryInfo::HostBinariesPath, true, false },
     { "QT_HOST_LIBS", QLibraryInfo::HostLibrariesPath, true, false },
+    { "QT_HOST_LIBEXECS", QLibraryInfo::HostLibraryExecutablesPath, true, false },
     { "QMAKE_SPEC", QLibraryInfo::HostSpecPath, true, true },
     { "QMAKE_XSPEC", QLibraryInfo::TargetSpecPath, true, true },
 };

src/corelib/global/qlibraryinfo.cpp

@@ -365,8 +365,14 @@ QVersionNumber QLibraryInfo::version() noexcept
  * - add to qt_config.prf, qt_module.prf, qt_module_fwdpri.prf
  */
 
+#ifdef QT_BUILD_QMAKE
+constexpr size_t qtConfEntriesKeySize = 23;
+#else
+constexpr size_t qtConfEntriesKeySize = 19;
+#endif
+
 static const struct {
-    char key[19], value[13];
+    char key[qtConfEntriesKeySize], value[13];
 } qtConfEntries[] = {
     { "Prefix", "." },
     { "Documentation", "doc" }, // should be ${Data}/doc
@@ -389,6 +395,7 @@ static const struct {
     { "Sysroot", "" },
     { "SysrootifyPrefix", "" },
     { "HostBinaries", "bin" },
+    { "HostLibraryExecutables", "libexec" },
     { "HostLibraries", "lib" },
     { "HostData", "." },
     { "TargetSpec", "" },

src/corelib/global/qlibraryinfo.h

@@ -78,6 +78,7 @@ public:
         SysrootPath,
         SysrootifyPrefixPath,
         HostBinariesPath,
+        HostLibraryExecutablesPath,
         HostLibrariesPath,
         HostDataPath,
         TargetSpecPath,