Output:

= METHOD 1: =
- depends
- SUBDIRS in necessary build order listed (which should not be needed, but see Method 2)
- build_pass active
- qmake 5.4.1:

== Summary: ==
qmake -tp vc -r (MSVS2010) does detect dependencies.
qmake -r (QtCreator) does detect dependency.

Both build correctly!
If some project are independent (e.g. lib and lib2) they are build in parallel.
If both are finished, app is build.

So:  DO USE THIS method.
Drawback 1:
However you have to keep the listing in build order. This should not be needed as we have the
dependencies set by hand already and all necessary info is given by this. But due to a bug 
described in Method 2 you will have to, if you want to use msbuild and nmake.

Drawback 2:
For MSVS2010 this is only supported under newer qmake (Qt 5.x). 
qmake -tp vc -r of older Qt (4.8) fails on this.
However if you use qmake -r, nmake (QtCreator): the qmake of 4.8.6 does handle it!



== nmake ==

=== Makefile ===
sub-src-lib: FORCE
...
sub-src-lib2: FORCE
...
sub-src-app: sub-src-lib \
		sub-src-lib2 FORCE
...

Comment: app depends on lib and lib2. Ok!

=== nmake / jom===
jom /D

*01.01.1601 01:00:00 FORCE
*18.04.2015 14:47:19 sub-src-lib-make_first
*18.04.2015 14:47:19 sub-src-lib2-make_first
	cd src\lib\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\lib\lib.pro -spec win32-msvc2010 -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
 18.04.2015 14:43:24 release\lib.obj
 18.04.2015 14:43:24 release\lib.dll
*18.04.2015 14:43:24 all
*18.04.2015 14:43:24 first
*18.04.2015 14:43:24 first
	cd src\lib2\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\lib2.pro -spec win32-msvc2010 -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
 18.04.2015 14:43:24 release\lib2.obj
 18.04.2015 14:43:24 release\lib2.dll
*18.04.2015 14:43:24 all
*18.04.2015 14:43:24 first
*18.04.2015 14:43:24 first
*18.04.2015 14:47:19 sub-src-app-make_first
	cd src\app\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\app\app.pro -spec win32-msvc2010 -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
 18.04.2015 14:43:25 release\main.obj
 18.04.2015 14:43:25 release\app.exe
*18.04.2015 14:43:25 all
*18.04.2015 14:43:25 first
*18.04.2015 14:43:25 first
*18.04.2015 14:47:19 make_first
*18.04.2015 14:47:19 first

Comment: Parallel lib and lib2, then building app

== vs2010 ==

=== vs2010 sln ===
Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib\lib.vcxproj", "{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib2", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib2\lib2.vcxproj", "{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app", "C:/Users/Michael/QtProgramme/subdirs_test/src/app\app.vcxproj", "{124A643E-E033-36E6-AA41-AD3E268A86DE}"
	ProjectSection(ProjectDependencies) = postProject
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205} = {BBD7705B-EE58-39F5-9DA4-17D53DE9F205}
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6} = {E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}
	EndProjectSection
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Win32 = Debug|Win32
		Release|Win32 = Release|Win32
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.ActiveCfg = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.Build.0 = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.ActiveCfg = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.Build.0 = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.ActiveCfg = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.Build.0 = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.ActiveCfg = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.Build.0 = Release|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.ActiveCfg = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.Build.0 = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.ActiveCfg = Release|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.Build.0 = Release|Win32
	EndGlobalSection
	GlobalSection(ExtensibilityGlobals) = postSolution
	EndGlobalSection
	GlobalSection(ExtensibilityAddIns) = postSolution
	EndGlobalSection
EndGlobal

Comment: Dependencies are nicely set.

=== Build log: ===

Rebuild:

1>------ Build started: Project: lib2, Configuration: Debug Win32 ------
2>------ Build started: Project: lib, Configuration: Debug Win32 ------
1>  lib2.cpp
2>  lib.cpp
1>     Creating library debug\\lib2d.lib and object debug\\lib2d.exp
2>     Creating library debug\\libd.lib and object debug\\libd.exp
1>  lib2.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\debug\lib2d.dll
2>  lib.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib\debug\libd.dll
3>------ Build started: Project: app, Configuration: Debug Win32 ------
3>  main.cpp
3>  app.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\app\debug\app.exe

Comment:
lib2 and lib are build in parallel. app is started when lib1 and lib2 was completed.














= METHOD 2: =
- depends
- SUBDIRS *not* in demanded build order listed
- build_pass active
- qmake 5.4.1:


== Summary: ==
QtCreator: qmake -r does detect any dependency.
So it builds correctly!

qmake -tp vc -r (MSVS2010) does *not* detect any dependency. Even though they are given by hand!!!
This is a bug (as of 18-Apr-2015) and should be fixed. It should enough to set the dependencies
to be in the same league that the qmake -r (QtCreator) is.

So building should fail due to race conditions.
The MSVS2010 "Project Dependencies" panel does not show any dependencies, as expected.

However in the MSVS2010 case the build works! Somehow the IDE checks about the dependencies internally.
Later build seem to wait for building of the libs, too... Wow MS!
But msbuild fails!!! So think CI .....

So: DO NOT USE THIS until it is fixed. Keep an close eye on the order of the subdir entries. (Method 1)
But: This should be fixed!

== nmake ==

=== Makefile ===
...
sub-src-app: sub-src-lib \
		sub-src-lib2 FORCE
...
sub-src-lib: FORCE
...
sub-src-lib2: FORCE
...

Comment: app depends on lib and lib2. Ok!

=== nmake / jom===
jom /D

*01.01.1601 01:00:00 FORCE
*18.04.2015 16:18:26 sub-src-lib-make_first
*18.04.2015 16:18:26 sub-src-lib2-make_first
	cd src\lib2\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\lib2.pro -spec win32-msvc2010 -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
*01.01.1601 01:00:00 release\lib2.obj
	cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DLIB2_LIBRARY -DQT_NO_DEBUG -DQT_CORE_LIB -DNDEBUG -I"." -I"C:\Qt_online\5.4\msvc2010_opengl\include" -I"C:\Qt_online\5.4\msvc2010_opengl\include\QtCore" -I"release" -I"C:\Qt_online\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Forelease\ @C:\Users\Michael\AppData\Local\Temp\lib2.obj.10728.0.jom
lib2.cpp
*01.01.1601 01:00:00 release\lib2.dll
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /DLL /SUBSYSTEM:WINDOWS /MANIFEST /MANIFESTFILE:release\lib2.dll.embed.manifest /OUT:release\lib2.dll @C:\Users\Michael\AppData\Local\Temp\lib2.dll.10728.546.jom
   Creating library release\lib2.lib and object release\lib2.exp
	mt.exe /nologo /manifest release\lib2.dll.embed.manifest /outputresource:release\lib2.dll;2
*18.04.2015 16:18:29 all
*18.04.2015 16:18:29 first
*18.04.2015 16:18:29 first
	cd src\lib\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\lib\lib.pro -spec win32-msvc2010 -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
 18.04.2015 14:43:24 release\lib.obj
 18.04.2015 14:43:24 release\lib.dll
*18.04.2015 16:18:13 all
*18.04.2015 16:18:13 first
*18.04.2015 14:43:24 first
*18.04.2015 16:18:30 sub-src-app-make_first
	cd src\app\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\app\app.pro -spec win32-msvc2010 -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
 18.04.2015 14:43:25 release\main.obj
 18.04.2015 14:43:25 release\app.exe
*18.04.2015 16:18:13 all
*18.04.2015 16:18:13 first
*18.04.2015 14:43:25 first
*18.04.2015 16:18:30 make_first
*18.04.2015 16:18:30 first

Comment: Parallel lib and lib2, then building app

== vs2010 ==

=== vs2010 sln ===
Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app", "C:/Users/Michael/QtProgramme/subdirs_test/src/app\app.vcxproj", "{124A643E-E033-36E6-AA41-AD3E268A86DE}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib\lib.vcxproj", "{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib2", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib2\lib2.vcxproj", "{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}"
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Win32 = Debug|Win32
		Release|Win32 = Release|Win32
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.ActiveCfg = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.Build.0 = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.ActiveCfg = Release|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.Build.0 = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.ActiveCfg = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.Build.0 = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.ActiveCfg = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.Build.0 = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.ActiveCfg = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.Build.0 = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.ActiveCfg = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.Build.0 = Release|Win32
	EndGlobalSection
	GlobalSection(ExtensibilityGlobals) = postSolution
	EndGlobalSection
	GlobalSection(ExtensibilityAddIns) = postSolution
	EndGlobalSection
EndGlobal

Comment: Dependencies are missing completely

output of qmake with debugflag: DEBUG_SOLUTION_GEN
Project MESSAGE: Method 2 --- usign the .depends with wrong SUBDIRS order
Reading C:/Users/Michael/QtProgramme/subdirs_test/src/app/app.pro
Reading C:/Users/Michael/QtProgramme/subdirs_test/src/lib/lib.pro
Project MESSAGE: lib - no build pass
Project MESSAGE: libd debug
Project MESSAGE: lib release
Reading C:/Users/Michael/QtProgramme/subdirs_test/src/lib2/lib2.pro
Project MESSAGE: lib2 - no build pass
Project MESSAGE: lib2d debug
Project MESSAGE: lib2 release
Deps for              app.exe: [Qt5Core.lib]
Project MESSAGE: lib - no build pass
Deps for              lib.lib: [Qt5Core.lib]
Project MESSAGE: lib2 - no build pass
Deps for             lib2.lib: [Qt5Core.lib]

Comment: So, app, because it comes first, does not know anything about the libs ....
         But what happened to the depends. Shouldn't this be enough?
		 
=== Build log: ===
Rebuild:

1>------ Rebuild All started: Project: lib, Configuration: Debug Win32 ------
2>------ Rebuild All started: Project: app, Configuration: Debug Win32 ------
3>------ Rebuild All started: Project: lib2, Configuration: Debug Win32 ------
1>  lib.cpp
2>  main.cpp
3>  lib2.cpp
1>     Creating library debug\\libd.lib and object debug\\libd.exp
3>     Creating library debug\\lib2d.lib and object debug\\lib2d.exp
3>  lib2.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\debug\lib2d.dll
1>  lib.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib\debug\libd.dll
2>LINK : fatal error LNK1104: cannot open file 'libd2.lib'


Comment:
Now lib, app, and lib2 are build in parallel.
Race condition: libd2.lib is not build when app wants to link.












= METHOD 3: =
- *no* depends
- SUBDIRS not in build order
- build_pass active
- qmake 5.4.1:

== Summary: ==
qmake -tp vc -r (MSVS2010) and also qmake -r (QtCreator) do *not* detect any dependency.
So building should fail due to race conditions.

And this happens in the QtCreator case, as expected.
Even worse later build will link non up-to-date libraries !!!

The MSVS2010 "Project Dependencies" panel does not show any dependencies, as expected.
However in the MSVS2010 case the build works! Somehow the IDE checks about the dependencies internally.
Later build seem to wait for building of the libs, too... Wow MS!

But anyhow: DO NOT USE THIS !!!
(Or you must stay on the MSVS2010 track and will miss QtCreator)
(Or you you will not be able to use msbuild: it fails, too ... goodbye CI)

== nmake ==

=== Makefile ===
...
sub-src-app: FORCE
...
sub-src-lib: FORCE
...
sub-src-lib2: FORCE
...

Comment: app depends *NOT* on lib and lib2. Not nice ....

=== nmake / jom===
jom /D

*01.01.1601 01:00:00 FORCE
*18.04.2015 16:51:47 sub-src-app-make_first
*18.04.2015 16:51:47 sub-src-lib-make_first
*18.04.2015 16:51:47 sub-src-lib2-make_first
	cd src\app\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\app\app.pro -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
*17.04.2015 21:13:30 release\main.obj
	cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DQT_NO_DEBUG -DQT_CORE_LIB -DNDEBUG -I"." -I"..\lib" -I"C:\Qt_online\5.4\msvc2010_opengl\include" -I"C:\Qt_online\5.4\msvc2010_opengl\include\QtCore" -I"release" -I"C:\Qt_online\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Forelease\ @C:\Users\Michael\AppData\Local\Temp\main.obj.8368.0.jom
main.cpp
*18.04.2015 16:51:47 release\app.exe
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /SUBSYSTEM:CONSOLE "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='*' processorArchitecture='*'" /MANIFEST /MANIFESTFILE:release\app.exe.embed.manifest /OUT:release\app.exe @C:\Users\Michael\AppData\Local\Temp\app.exe.8368.483.jom
LINK : fatal error LNK1181: cannot open input file 'lib.lib'

Comment: all in parallel. Race condition ending up in building app.exe before lib.lib is build!!! 

== vs2010 ==

=== vs2010 sln ===
Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app", "C:/Users/Michael/QtProgramme/subdirs_test/src/app\app.vcxproj", "{124A643E-E033-36E6-AA41-AD3E268A86DE}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib\lib.vcxproj", "{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib2", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib2\lib2.vcxproj", "{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}"
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Win32 = Debug|Win32
		Release|Win32 = Release|Win32
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.ActiveCfg = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.Build.0 = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.ActiveCfg = Release|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.Build.0 = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.ActiveCfg = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.Build.0 = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.ActiveCfg = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.Build.0 = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.ActiveCfg = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.Build.0 = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.ActiveCfg = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.Build.0 = Release|Win32
	EndGlobalSection
	GlobalSection(ExtensibilityGlobals) = postSolution
	EndGlobalSection
	GlobalSection(ExtensibilityAddIns) = postSolution
	EndGlobalSection
EndGlobal

Comment: Dependencies are missing completely
		 
=== Build log: ===
Rebuild:

1>------ Build started: Project: lib, Configuration: Debug Win32 ------
2>------ Build started: Project: app, Configuration: Debug Win32 ------
3>------ Build started: Project: lib2, Configuration: Debug Win32 ------
1>  lib.cpp
2>  main.cpp
3>  lib2.cpp
1>     Creating library debug\\libd.lib and object debug\\libd.exp
3>     Creating library debug\\lib2d.lib and object debug\\lib2d.exp
3>  lib2.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\debug\lib2d.dll
1>  lib.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib\debug\libd.dll
2>  app.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\app\debug\app.exe

Comment:
Now lib, app, and lib2 are build in parallel. But somehow MSVS2010 waits for the app to link ....
wow!

So what your msbuild (Sorry for the German):
Fehler beim Buildvorgang. (translates to: Error during building)

"c:\Users\Michael\QtProgramme\subdirs_test\subdirs_test.sln" (Standardziel) (1) ->
"C:\Users\Michael\QtProgramme\subdirs_test\src\app\app.vcxproj" (Standardziel) (2) ->
(Link Ziel) ->
  LINK : fatal error LNK1104: cannot open file 'libd.lib' [C:\Users\Michael\QtProgramme\subdirs_test\src\app\app.vcxproj]

    0 Warnung(en)		(Warning(s))
    1 Fehler   			(Error(s))






= METHOD 4: =
- *no* depends
- SUBDIRS not in build order
- build_pass *inactive*
- CONFIG += ordered *inactive*
- qmake 5.4.1:

== Summary: ==
qmake -tp vc -r (VS2010) *does* find the dependencies. Even though the order in the SUBDIRS
is "wrong": app is before lib and lib2 ....
BUT:
This only works if build_pass marshalling is
not active in the subdir .pro files:
# no build_pass marshalling
CONFIG(debug,   release|debug): TARGET=libd
CONFIG(release, release|debug): TARGET=lib
# instead of# e.g.
# build_pass:CONFIG(debug,   release|debug): TARGET=libd
# build_pass:CONFIG(release, release|debug): TARGET=lib
#
In consequence the msbuild and MSVS2010 build ok.

The qmake -r (QtCreator) does *not* generate any dependencies with the faulty consequences.
Race conditions when building.

So: DO NOT USE THIS !!! 
(Only use it if you will forever stay on the VS2010 IDE and msbuild, but you will miss QtCreator)

== nmake ==

=== Makefile ===
...
sub-src-app: FORCE
...
sub-src-lib: FORCE
...
sub-src-lib2: FORCE
...

Comment: app depends *NOT* on lib and lib2. Not nice ....

=== nmake / jom===
jom /D

*01.01.1601 01:00:00 FORCE
*18.04.2015 16:51:47 sub-src-app-make_first
*18.04.2015 16:51:47 sub-src-lib-make_first
*18.04.2015 16:51:47 sub-src-lib2-make_first
	cd src\app\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\app\app.pro -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
*17.04.2015 21:13:30 release\main.obj
	cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DQT_NO_DEBUG -DQT_CORE_LIB -DNDEBUG -I"." -I"..\lib" -I"C:\Qt_online\5.4\msvc2010_opengl\include" -I"C:\Qt_online\5.4\msvc2010_opengl\include\QtCore" -I"release" -I"C:\Qt_online\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Forelease\ @C:\Users\Michael\AppData\Local\Temp\main.obj.8368.0.jom
main.cpp
*18.04.2015 16:51:47 release\app.exe
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /SUBSYSTEM:CONSOLE "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='*' processorArchitecture='*'" /MANIFEST /MANIFESTFILE:release\app.exe.embed.manifest /OUT:release\app.exe @C:\Users\Michael\AppData\Local\Temp\app.exe.8368.483.jom
LINK : fatal error LNK1181: cannot open input file 'lib.lib'

Comment: all in parallel. Race condition ending up in building app.exe before lib.lib is build!!! 

== vs2010 ==

=== vs2010 sln ===
Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app", "C:/Users/Michael/QtProgramme/subdirs_test/src/app\app.vcxproj", "{124A643E-E033-36E6-AA41-AD3E268A86DE}"
	ProjectSection(ProjectDependencies) = postProject
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205} = {BBD7705B-EE58-39F5-9DA4-17D53DE9F205}
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6} = {E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}
	EndProjectSection
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib\lib.vcxproj", "{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib2", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib2\lib2.vcxproj", "{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}"
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Win32 = Debug|Win32
		Release|Win32 = Release|Win32
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.ActiveCfg = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.Build.0 = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.ActiveCfg = Release|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.Build.0 = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.ActiveCfg = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.Build.0 = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.ActiveCfg = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.Build.0 = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.ActiveCfg = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.Build.0 = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.ActiveCfg = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.Build.0 = Release|Win32
	EndGlobalSection
	GlobalSection(ExtensibilityGlobals) = postSolution
	EndGlobalSection
	GlobalSection(ExtensibilityAddIns) = postSolution
	EndGlobalSection
EndGlobal

Comment: Dependencies are there.
		 
=== Build log: ===
Rebuild:
1>------ Build started: Project: lib, Configuration: Debug Win32 ------
2>------ Build started: Project: lib2, Configuration: Debug Win32 ------
1>  lib.cpp
2>  lib2.cpp
1>     Creating library debug\\libd.lib and object debug\\libd.exp
2>     Creating library debug\\lib2d.lib and object debug\\lib2d.exp
2>  lib2.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\debug\lib2d.dll
1>  lib.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib\debug\libd.dll
3>------ Build started: Project: app, Configuration: Debug Win32 ------
3>  main.cpp
3>  app.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\app\debug\app.exe


Comment:
Now lib, lib2 are build in parallel. App after lib and lib2 is there.



= METHOD 5: =
- *no* depends
- SUBDIRS in build order
- build_pass *active*
- CONFIG += ordered *active*
- qmake 5.4.1:

== Summary: ==
qmake -tp vc -r (VS2010) *does not* find the dependencies. This is due to active build_pass marshalling.
# no build_pass marshalling
build_pass:CONFIG(debug,   release|debug): TARGET=libd
build_pass:CONFIG(release, release|debug): TARGET=lib
#
In consequence the msbuild and MSVS2010 build are in parallel. Which is not what we wanted with
option "ordered"!

The qmake -r (QtCreator) does *not* generate any clever dependencies.
However the build order is given by hand.
The building is one after each other for nmake and even for jom.

So: Inconsistent behaviour. Do not use it.

== nmake ==

=== Makefile ===
...
sub-src-lib-make_first-ordered: FORCE
...
sub-src-lib2-make_first-ordered: sub-src-lib-make_first-ordered  FORCE
...
sub-src-app-make_first-ordered: sub-src-lib2-make_first-ordered  FORCE
...

Comment: so ordered builds up a dependency between lib2 and lib that is actually not there:
first built lib and lib2 and finally app. So there can be no parallel building of projects here.

=== nmake / jom===
jom /D

*01.01.1601 01:00:00 FORCE
*20.04.2015 20:11:37 sub-src-lib2-make_first-ordered
	cd src\lib2\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\lib2.pro M=5 -o Makefile ) && c:\Qt\qtcreator-3.4.0_20150418\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt\qtcreator-3.4.0_20150418\bin\jom.exe -f Makefile.Release
*18.04.2015 19:09:25 release\lib2.obj
	cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DLIB2_LIBRARY -DQT_NO_DEBUG -DQT_CORE_LIB -DNDEBUG -I"." -I"C:\Qt_online\5.4\msvc2010_opengl\include" -I"C:\Qt_online\5.4\msvc2010_opengl\include\QtCore" -I"release" -I"C:\Qt_online\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Forelease\ @C:\Users\Michael\AppData\Local\Temp\lib2.obj.4764.0.jom
lib2.cpp
*01.01.1601 01:00:00 release\lib2.dll
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /DLL /SUBSYSTEM:WINDOWS /MANIFEST /MANIFESTFILE:release\lib2.dll.embed.manifest /OUT:release\lib2.dll @C:\Users\Michael\AppData\Local\Temp\lib2.dll.4764.218.jom
   Creating library release\lib2.lib and object release\lib2.exp
	mt.exe /nologo /manifest release\lib2.dll.embed.manifest /outputresource:release\lib2.dll;2
*20.04.2015 20:11:37 all
*20.04.2015 20:11:37 first
*20.04.2015 20:11:37 first
*20.04.2015 20:11:37 sub-src-lib-make_first-ordered
	cd src\lib\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\lib\lib.pro M=5 -o Makefile ) && c:\Qt\qtcreator-3.4.0_20150418\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt\qtcreator-3.4.0_20150418\bin\jom.exe -f Makefile.Release
*17.04.2015 23:27:06 release\lib.obj
	cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DLIB_LIBRARY -DQT_NO_DEBUG -DQT_CORE_LIB -DNDEBUG -I"." -I"C:\Qt_online\5.4\msvc2010_opengl\include" -I"C:\Qt_online\5.4\msvc2010_opengl\include\QtCore" -I"release" -I"C:\Qt_online\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Forelease\ @C:\Users\Michael\AppData\Local\Temp\lib.obj.9960.15.jom
lib.cpp
*01.01.1601 01:00:00 release\lib.dll
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /DLL /SUBSYSTEM:WINDOWS /MANIFEST /MANIFESTFILE:release\lib.dll.embed.manifest /OUT:release\lib.dll @C:\Users\Michael\AppData\Local\Temp\lib.dll.9960.234.jom
   Creating library release\lib.lib and object release\lib.exp
	mt.exe /nologo /manifest release\lib.dll.embed.manifest /outputresource:release\lib.dll;2
*20.04.2015 20:11:38 all
*20.04.2015 20:11:38 first
*20.04.2015 20:11:38 first
*20.04.2015 20:11:38 sub-src-app-make_first-ordered
	cd src\app\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\app\app.pro M=5 -o Makefile ) && c:\Qt\qtcreator-3.4.0_20150418\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt\qtcreator-3.4.0_20150418\bin\jom.exe -f Makefile.Release
*18.04.2015 19:09:30 release\main.obj
	cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DQT_NO_DEBUG -DQT_CORE_LIB -DNDEBUG -I"." -I"..\lib" -I"C:\Qt_online\5.4\msvc2010_opengl\include" -I"C:\Qt_online\5.4\msvc2010_opengl\include\QtCore" -I"release" -I"C:\Qt_online\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Forelease\ @C:\Users\Michael\AppData\Local\Temp\main.obj.5448.16.jom
main.cpp
*01.01.1601 01:00:00 release\app.exe
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /SUBSYSTEM:CONSOLE "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='*' processorArchitecture='*'" /MANIFEST /MANIFESTFILE:release\app.exe.embed.manifest /OUT:release\app.exe @C:\Users\Michael\AppData\Local\Temp\app.exe.5448.484.jom
	mt.exe /nologo /manifest release\app.exe.embed.manifest /outputresource:release\app.exe;1
*20.04.2015 20:11:38 all
*20.04.2015 20:11:38 first
*20.04.2015 20:11:38 first
*20.04.2015 20:11:38 make_first
*20.04.2015 20:11:38 first

Comment: all are in sequence, no projects in parallel.

== vs2010 ==

=== vs2010 sln ===
Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib2", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib2\lib2.vcxproj", "{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib\lib.vcxproj", "{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app", "C:/Users/Michael/QtProgramme/subdirs_test/src/app\app.vcxproj", "{124A643E-E033-36E6-AA41-AD3E268A86DE}"
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Win32 = Debug|Win32
		Release|Win32 = Release|Win32
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.ActiveCfg = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.Build.0 = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.ActiveCfg = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.Build.0 = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.ActiveCfg = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.Build.0 = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.ActiveCfg = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.Build.0 = Release|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.ActiveCfg = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.Build.0 = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.ActiveCfg = Release|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.Build.0 = Release|Win32
	EndGlobalSection
	GlobalSection(ExtensibilityGlobals) = postSolution
	EndGlobalSection
	GlobalSection(ExtensibilityAddIns) = postSolution
	EndGlobalSection
EndGlobal

Comment: No dependencies are there. All is build in parallel !!! Not ordered.
		 
=== Build log: ===
Rebuild:
1>------ Build started: Project: lib, Configuration: Debug Win32 ------
2>------ Build started: Project: lib2, Configuration: Debug Win32 ------
3>------ Build started: Project: app, Configuration: Debug Win32 ------
1>  lib.cpp
2>  lib2.cpp
3>  main.cpp
1>     Creating library debug\\libd.lib and object debug\\libd.exp
2>     Creating library debug\\lib2d.lib and object debug\\lib2d.exp
1>  lib.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib\debug\libd.dll
2>  lib2.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\debug\lib2d.dll
3>  app.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\app\debug\app.exe

Comment:
lib, lib2, and app are build in parallel.
This is not what Qt 5 docs tell us about.
However somehow VS2010 manages to wait for the libs to be finished before linking the app.
Clever ....












= METHOD 6: =
- *no* depends
- SUBDIRS in build order
- build_pass *inactive*
- CONFIG += ordered *active*
- qmake 5.4.1:

== Summary: ==
qmake -tp vc -r (VS2010) *does* find the dependencies. This is due to inactive build_pass marshalling.
# no build_pass marshalling
CONFIG(debug,   release|debug): TARGET=libd
CONFIG(release, release|debug): TARGET=lib
# instead of
# e.g.
# build_pass:CONFIG(debug,   release|debug): TARGET=libd
# build_pass:CONFIG(release, release|debug): TARGET=lib
#
In consequence the msbuild and MSVS2010 build ok.

The qmake -r (QtCreator) does *not* generate any dependencies.
However the build order is given by hand.
The building is one after each other for nmake and even for jom.

So: Inconsistent behaviour. Do not use it.
But: at the moment the only method that works for mixed development with Qt 4.8 and 5.4

== nmake ==

=== Makefile ===
...
sub-src-lib-make_first-ordered: FORCE
...
sub-src-lib2-make_first-ordered: sub-src-lib-make_first-ordered  FORCE
...
sub-src-app-make_first-ordered: sub-src-lib2-make_first-ordered  FORCE
...

Comment: so ordered builds up a dependency between lib2 and lib that is actually not there:
first built lib and lib2 and finally app. So there can be no parallel building of projects here.

=== nmake / jom===
jom /D

*01.01.1601 01:00:00 FORCE
*18.04.2015 19:55:14 sub-src-lib-make_first-ordered
	cd src\lib\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\lib\lib.pro -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
*17.04.2015 23:27:06 release\lib.obj
	cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DLIB_LIBRARY -DQT_NO_DEBUG -DQT_CORE_LIB -DNDEBUG -I"." -I"C:\Qt_online\5.4\msvc2010_opengl\include" -I"C:\Qt_online\5.4\msvc2010_opengl\include\QtCore" -I"release" -I"C:\Qt_online\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Forelease\ @C:\Users\Michael\AppData\Local\Temp\lib.obj.4240.0.jom
lib.cpp
*18.04.2015 19:55:14 release\lib.dll
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /DLL /SUBSYSTEM:WINDOWS /MANIFEST /MANIFESTFILE:release\lib.dll.embed.manifest /OUT:release\lib.dll @C:\Users\Michael\AppData\Local\Temp\lib.dll.4240.234.jom
   Creating library release\lib.lib and object release\lib.exp
	mt.exe /nologo /manifest release\lib.dll.embed.manifest /outputresource:release\lib.dll;2
*18.04.2015 19:55:14 all
*18.04.2015 19:55:14 first
*18.04.2015 19:55:14 first
*18.04.2015 19:55:14 sub-src-lib2-make_first-ordered
	cd src\lib2\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\lib2.pro -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
*18.04.2015 19:09:25 release\lib2.obj
	cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DLIB2_LIBRARY -DQT_NO_DEBUG -DQT_CORE_LIB -DNDEBUG -I"." -I"C:\Qt_online\5.4\msvc2010_opengl\include" -I"C:\Qt_online\5.4\msvc2010_opengl\include\QtCore" -I"release" -I"C:\Qt_online\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Forelease\ @C:\Users\Michael\AppData\Local\Temp\lib2.obj.5820.16.jom
lib2.cpp
*18.04.2015 19:55:15 release\lib2.dll
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /DLL /SUBSYSTEM:WINDOWS /MANIFEST /MANIFESTFILE:release\lib2.dll.embed.manifest /OUT:release\lib2.dll @C:\Users\Michael\AppData\Local\Temp\lib2.dll.5820.234.jom
   Creating library release\lib2.lib and object release\lib2.exp
	mt.exe /nologo /manifest release\lib2.dll.embed.manifest /outputresource:release\lib2.dll;2
*18.04.2015 19:55:15 all
*18.04.2015 19:55:15 first
*18.04.2015 19:55:15 first
*18.04.2015 19:55:15 sub-src-app-make_first-ordered
	cd src\app\ && ( if not exist Makefile C:\Qt_online\5.4\msvc2010_opengl\bin\qmake.exe C:\Users\Michael\QtProgramme\subdirs_test\src\app\app.pro -o Makefile ) && c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile
*01.01.1601 01:00:00 FORCE
*01.01.1601 01:00:00 release
	c:\Qt_online\Tools\QtCreator\bin\jom.exe -f Makefile.Release
*01.01.1601 01:00:00 release\main.obj
	cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DQT_NO_DEBUG -DQT_CORE_LIB -DNDEBUG -I"." -I"..\lib" -I"C:\Qt_online\5.4\msvc2010_opengl\include" -I"C:\Qt_online\5.4\msvc2010_opengl\include\QtCore" -I"release" -I"C:\Qt_online\5.4\msvc2010_opengl\mkspecs\win32-msvc2010" -Forelease\ @C:\Users\Michael\AppData\Local\Temp\main.obj.7716.0.jom
main.cpp
*18.04.2015 19:55:15 release\app.exe
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /SUBSYSTEM:CONSOLE "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='*' processorArchitecture='*'" /MANIFEST /MANIFESTFILE:release\app.exe.embed.manifest /OUT:release\app.exe @C:\Users\Michael\AppData\Local\Temp\app.exe.7716.499.jom
	mt.exe /nologo /manifest release\app.exe.embed.manifest /outputresource:release\app.exe;1
*18.04.2015 19:55:15 all
*18.04.2015 19:55:15 first
*18.04.2015 19:55:15 first
*18.04.2015 19:55:15 make_first
*18.04.2015 19:55:15 first

Comment: all are in sequence, no project in parallel.

== vs2010 ==

=== vs2010 sln ===
Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib\lib.vcxproj", "{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lib2", "C:/Users/Michael/QtProgramme/subdirs_test/src/lib2\lib2.vcxproj", "{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app", "C:/Users/Michael/QtProgramme/subdirs_test/src/app\app.vcxproj", "{124A643E-E033-36E6-AA41-AD3E268A86DE}"
	ProjectSection(ProjectDependencies) = postProject
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205} = {BBD7705B-EE58-39F5-9DA4-17D53DE9F205}
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6} = {E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}
	EndProjectSection
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Win32 = Debug|Win32
		Release|Win32 = Release|Win32
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.ActiveCfg = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Debug|Win32.Build.0 = Debug|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.ActiveCfg = Release|Win32
		{BBD7705B-EE58-39F5-9DA4-17D53DE9F205}.Release|Win32.Build.0 = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.ActiveCfg = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Debug|Win32.Build.0 = Debug|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.ActiveCfg = Release|Win32
		{E2C38A45-30F3-3D3D-9D94-91EB9244EAF6}.Release|Win32.Build.0 = Release|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.ActiveCfg = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Debug|Win32.Build.0 = Debug|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.ActiveCfg = Release|Win32
		{124A643E-E033-36E6-AA41-AD3E268A86DE}.Release|Win32.Build.0 = Release|Win32
	EndGlobalSection
	GlobalSection(ExtensibilityGlobals) = postSolution
	EndGlobalSection
	GlobalSection(ExtensibilityAddIns) = postSolution
	EndGlobalSection
EndGlobal

Comment: Dependencies are there.
		 
=== Build log: ===
Rebuild:
1>------ Rebuild All started: Project: lib2, Configuration: Debug Win32 ------
2>------ Rebuild All started: Project: lib, Configuration: Debug Win32 ------
1>  lib2.cpp
2>  lib.cpp
2>     Creating library debug\\libd.lib and object debug\\libd.exp
1>     Creating library debug\\lib2d.lib and object debug\\lib2d.exp
1>  lib2.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib2\debug\lib2d.dll
2>  lib.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\lib\debug\libd.dll
3>------ Rebuild All started: Project: app, Configuration: Debug Win32 ------
3>  main.cpp
3>  app.vcxproj -> C:\Users\Michael\QtProgramme\subdirs_test\src\app\debug\app.exe


Comment:
Now lib, lib2 are build in parallel. App after lib and lib2 is there.
This is not what Qt 5 docs tell us about.