doc: Added note about qmake not building to two targets simultaneously

Task-number: 256486

1 files changed, 23 insertions, 0 deletions

diff --git a/doc/src/qmake-manual.qdoc b/doc/src/qmake-manual.qdoc
index 5b261ab..049f30c 100644
--- a/doc/src/qmake-manual.qdoc
+++ b/doc/src/qmake-manual.qdoc
@@ -829,6 +829,29 @@
     Note that, if a project is later moved on the disk, \c qmake must be run
     again to process the project file and create a new Xcode project file.
 
+    \section2 On supporting two build targets simultaneously
+
+    Implementing this is currently not feasible, because the XCode
+    concept of Active Build Configurations is conceptually different
+    from the qmake idea of build targets.
+
+    The XCode Active Build Configurations settings are for modifying
+    xcode configurations, compiler flags and similar build
+    options. Unlike Visual Studio, XCode does not allow for the
+    selection of specific library files based on whether debug or
+    release build configurations are selected. The qmake debug and
+    release settings control which library files are linked to the
+    executable.
+
+    It is currently not possible to set files in XCode configuration
+    settings from the qmake generated xcode project file. The way the
+    libraries are linked in the "Frameworks & Libraries" phase in the
+    XCode build system.
+
+    Furthermore, The selected "Active Build Configuration" is stored
+    in a .pbxuser file, which is generated by xcode on first load, not
+    created by qmake.
+
     \section1 Windows
 
     Features specific to this platform include support for creating Visual