This refactors the CMake build files to no longer manually call
the CMake functions for generating and linking the dicionairies.
One reason is to reduce boilerplate, the other is that it is now
no longer possible to have naming mismatches between the dictionary
generation arguments and linking function arguments which was causing
the race conditions we had in our build system.

This also now follows more strictly the separation between dependencies
like Math, Tree and Core and pure linking flags to external libraries.

The naming of the library in the two function calls ROOT_GENERATE_DICTIONARY
and ROOT_LINKER_LIBRARY was often not matching. This causes that
ROOT_LINKER_LIBRARY couldn't correctly set its dependencies to the output
file of ROOT_GENERATE_DICTIONARY and therefore causes race conditions in
the build system.

Note: We're attached all dependencies to a custom target, and
NOT to the output files generated by rootcling. This should mitigate
the race conditions we experience when multiple targets in different
Make jobs request the same output file as a dependency and then
suffer from this Make problem that is described here:
https://cmake.org/Bug/view.php?id=10082

This patch also adds a (commented out) piece of code that can print
warnings if we don't have a fitting G__*.cxx file for a
ROOT_LINKER_LIBRARY call. This is sometimes intended, so I didn't
enable this warning by default. We should enable this code
by default in the future once we have a way to express if we
intentionally don't provide the G__*.cxx file when calling
ROOT_LINKER_LIBRARY.

ROOT_GENERATE_DICTIONARY allows to specify dependencies, but we currently
don't actually specify those. As we need this for getting the module
dependencies right (as we can't build missing modules on demand), we should
add those dependencies here. Then those dependencies propagate to the
rootcling invocation which will in the future also generate the C++ module
for the selected dictionary.

ClassImp is a macro defined in Rtypes.h. It can be written without trailing
semicolon. However, clang-format is based on lexing and it doesn't know at
all about preprocessors and how to expand macros. When visiting ClassImp(X)
it thinks this is not a completed entity (as it doesn't expand macros) and
considers the next line as continuation of the previous.

Inserting a semicolon fixes the issue and makes formatting with clang-format
in the ROOT codebase less tricky.

Many headers contains redundant header guards around #include directives:

    #ifndef ROOT_TTree
    #include "TTree.h"
    #endif

This patch removes the #ifndef's around these includes as they
don't serve any pratical purpose anymore and are no longer part
of the current ROOT coding convention.

This patch also fixes the 153 typos that are contained in the
symbols of the #ifndef directives.

Signed-off-by: Vassil Vassilev <vvasilev@cern.ch>

Make cannot deal with 'export *', they have to be escaped and fixed later on.

This is the recommended way of using the modules feature and should pave our way
of enabling -fmodules-local-submodules-visibility mode.

Our two build systems can generate almost entirely a modulemap file laying out
one module per library. Due to some non-modular implementation in ROOT's core we
still need to treat some header files specially.

This patch appends modular header files to the modulemap while skipping the
predefined ones. Configure-make relates all headers that are installed in
$ROOTSYS/include to their library whereas relates only headers which are part of
library's dictionary.

Conflicts:
	bindings/pyroot/src/MethodProxy.cxx
	cmake/modules/RootConfiguration.cmake
	etc/http/files/main.htm
	etc/http/files/single.htm
	geom/geompainter/src/TGeoChecker.cxx
	graf2d/mathtext/inc/mathtext.h
	graf2d/mathtext/src/fontembed.cxx
	graf2d/mathtext/src/fontembedps.cxx
	graf2d/qt/inc/TQtCanvasPainter.h
	gui/qtgsi/src/TQRootCanvas.cxx
	hist/hist/src/TBackCompFitter.cxx
	hist/hist/src/TEfficiency.cxx
	hist/hist/src/TFractionFitter.cxx
	hist/hist/src/TGraphAsymmErrors.cxx
	hist/hist/src/TH2.cxx
	hist/hist/src/TH3.cxx
	hist/hist/src/TMultiDimFit.cxx
	hist/hist/src/TProfile.cxx
	hist/hist/src/TProfile2D.cxx
	hist/hist/src/TUnfoldBinning.cxx
	html/src/TDocParser.cxx
	math/foam/src/TFoam.cxx
	math/genvector/inc/Math/VectorUtil_Cint.h
	math/minuit2/inc/Minuit2/FumiliMaximumLikelihoodFCN.h
	math/minuit2/inc/Minuit2/FumiliStandardChi2FCN.h
	math/minuit2/inc/Minuit2/FumiliStandardMaximumLikelihoodFCN.h
	math/minuit2/inc/Minuit2/StackAllocator.h
	math/minuit2/src/TChi2ExtendedFCN.cxx
	math/minuit2/src/TChi2FCN.cxx
	math/minuit2/src/TFitterMinuit.cxx
	math/minuit2/src/TFumiliFCN.cxx
	misc/table/src/TTableDescriptor.cxx
	net/auth/src/rsaaux.cxx
	test/QpRandomDriver.cxx
	test/ios/RootBrowser/Src/Browser/Controllers/FileCollectionViewController.mm
	test/ios/RootBrowser/Src/Browser/Controllers/FileContentViewController.mm
	test/ios/RootBrowser/Src/Browser/Controllers/ObjectViewController.mm
	test/ios/RootBrowser/Src/Browser/Views/PadView.mm
	test/ios/RootBrowser/Src/CustomUI/RangeSlider.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisFontInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisLabelsInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisTitleInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/FilledAreaInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/H1BinsInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/H1ErrorsInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/H1Inspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/InspectorWithNavigation.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/LineInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/MarkerInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/ObjectInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/PadInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/PadTicksGridInspector.mm
	test/ios/Tutorials/PadOptionsController.mm
	test/ios/Tutorials/PadView.mm
	test/periodic/NdbMF.cxx
	test/periodic/NdbMTReacDesc.cxx
	test/periodic/NdbMTReactionXS.cxx
	test/periodic/NdbParticleList.cxx
	test/periodic/XSGui.h
	test/stressLinear.cxx
	test/stressRooFit_tests.cxx
	test/tcollbm.cxx
	test/vmatrix.cxx
	tutorials/eve/boxset.C
	tutorials/geom/geodemo.C
	tutorials/graphs/splines.C
	tutorials/hist/th2polyEurope.C
	tutorials/mc/CompareMasses.C
	tutorials/memstat/memstat.C

rootcling will write out ROOT files; that does not work for libCore and RIO
which instead use rootcling_tmp.
All other libraries use rootcling -rootbuild.
Rename ROOTCLINGTMP to ROOTCLINGSTAGE1; rootcling -rootbuild is ROOTCLINGSTAGE2.

now the library names in the rootmaps are sane.
In addition, the creation of the tmva and genvector dicts was
simplified.

mechanism which does not involve rlibmap anymore but
rootcling instead.
Basically all the calls to the macro calling rlibmap have been
removed.

Signed-off-by: Danilo Piparo <danilo.piparo@cern.ch>
Signed-off-by: Fons Rademakers <Fons.Rademakers@cern.ch>

which happens through rootcling and not anymore through rlibmap.

Signed-off-by: Danilo Piparo <danilo.piparo@cern.ch>
Signed-off-by: Fons Rademakers <Fons.Rademakers@cern.ch>

git-svn-id: http://root.cern.ch/svn/root/trunk@49226 27541ba8-7e3a-0410-8455-c3a389f83636

small changes to the CMake files to run the tests from the build directory.


git-svn-id: http://root.cern.ch/svn/root/trunk@48885 27541ba8-7e3a-0410-8455-c3a389f83636

In file included from input_line_1411:1:
/local2/pcanal/cint_working/rootcling/root.untouched/include/Math/Derivator.h:224:8: error: cannot combine with previous 'int' declaration specifier
   int Status() const; 
       ^
/usr/include/X11/Xlib.h:90:16: note: expanded from macro 'Status'
#define Status int
               ^


git-svn-id: http://root.cern.ch/svn/root/trunk@48802 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@43083 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@42643 27541ba8-7e3a-0410-8455-c3a389f83636

These are the changes needed to support explicitlink option for Linux and Mac.


git-svn-id: http://root.cern.ch/svn/root/trunk@41479 27541ba8-7e3a-0410-8455-c3a389f83636

Introduce alternative cmake based build system. Cmake is especially convenient
for building on Windows, as it can produce VC projects or nmake files and 
does not require cygwin to be installed. In addition on OSX Xcode projects
can be generated.


git-svn-id: http://root.cern.ch/svn/root/trunk@39463 27541ba8-7e3a-0410-8455-c3a389f83636

To make an out of source build do, assuming the source is in ~/root:
   mkdir ~/root-x8664
   cd ~/root-x8664
   ~/root/configure
   make
This is convenient to build e.g. 32 and 64-bit version from one source, but
also needed for cross-compilation, where it is now possible to build in
a special directory only the compile time tools, like rootcint for the
host architecture while the binary is build for the remote architecture
(like iOS).


git-svn-id: http://root.cern.ch/svn/root/trunk@36659 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@35964 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@35950 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@35365 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@32310 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@30774 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@23483 27541ba8-7e3a-0410-8455-c3a389f83636

asimage, freetype, gpad, graf, postscript, qt, win32gdk, x11, x11ttf

move the following directories to "graf3d":

eve, ftgl, g3d, gl, x3d


git-svn-id: http://root.cern.ch/svn/root/trunk@23140 27541ba8-7e3a-0410-8455-c3a389f83636