Add Rint as a dependency of rootcling

[pcanal]

TCling.cxx’s RegisterCxxModules loads explicitly several modules including Core, Rint and RIO.

When executing rootcling (for example for G__Net.cxx) before G__Rint.cxx was created and thus before lib/Rint.pcm was properly created, a default lib/Rint.pcm is auto-generated and registered as one of the dependencies. Later the real lib/Rint.pcm is created is creation date is later than other pcm than depends-on/uses it’s creation time. For example:

$ ls -lart lib/Net.pcm lib/MultiProc.pcm  lib/Imt.pcm lib/MathCore.pcm lib/Rint.pcm
-rw-r--r-- 1 pcanal pcanal  1158548 Nov 10 20:26 lib/Net.pcm
-rw-r--r-- 1 pcanal pcanal  1278392 Nov 10 20:27 lib/MultiProc.pcm
-rw-r--r-- 1 pcanal pcanal  2032752 Nov 10 20:27 lib/Imt.pcm
-rw-r--r-- 1 pcanal pcanal 12911448 Nov 10 20:27 lib/MathCore.pcm
-rw-r--r-- 1 pcanal pcanal   444724 Nov 10 20:35 lib/Rint.pcm

then later uses of those pcm leads to the (mis-worded) error message:

<<< cling interactive line includer >>>: fatal error: module file '/home/neel/Desktop/Root/build/lib/Rint.pcm' is out of date and needs to be rebuilt: could not read module signature
<<< cling interactive line includer >>>: note: imported by module 'MathCore' in '/home/neel/Desktop/Root/build/lib/MathCore.pcm'
Error: Module 'MathCore.pcm' failed to load.
Error: Error loading the default rootcling header files.
make[2]: *** [math/mathmore/CMakeFiles/G__MathMore.dir/build.make:130: math/mathmore/G__MathMore.cxx] Error 1

See the related circumstances in https://root-forum.cern.ch/t/wsl-build-from-source-error-rint-pcm-is-out-of-date-cannot-read-module-signature/47564/39

The stack trace that was triggers the auto-generation of Rint.pcm

at /home/pcanal/root_working/code/master/interpreter/llvm/src/tools/clang/lib/Sema/SemaModule.cpp:325
at /home/pcanal/root_working/code/master/interpreter/cling/lib/Interpreter/Interpreter.cpp:908
at /home/pcanal/root_working/code/master/interpreter/cling/lib/Interpreter/Interpreter.cpp:872
at /home/pcanal/root_working/code/master/core/metacling/src/TCling.cxx:1590

This PR fixes #11686

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14
How to customize builds

[phsft-bot]

Build failed on windows10/cxx14.
Running on null:C:\build\workspace\root-pullrequests-build
See console output.

Errors:

• [2022-11-11T05:15:18.912Z] ghprbPullLongDescription=TCling.cxx's RegisterCxxModules loads explicitly several modules including Core, Rint and RIO.\r\n\r\nWhen executing rootcling (for example for G__Net.cxx) before G__Rint.cxx was created and thus before lib/Rint.pcm was properly created, a default lib/Rint.pcm is auto-generated and registered as one of the dependencies. Later the real lib/Rint.pcm is created is creation date is later than other pcm than depends-on/uses it's creation time. For example:\r\n\r\n\r\n$ ls -lart lib/Net.pcm lib/MultiProc.pcm lib/Imt.pcm lib/MathCore.pcm lib/Rint.pcm\r\n-rw-r--r-- 1 pcanal pcanal 1158548 Nov 10 20:26 lib/Net.pcm\r\n-rw-r--r-- 1 pcanal pcanal 1278392 Nov 10 20:27 lib/MultiProc.pcm\r\n-rw-r--r-- 1 pcanal pcanal 2032752 Nov 10 20:27 lib/Imt.pcm\r\n-rw-r--r-- 1 pcanal pcanal 12911448 Nov 10 20:27 lib/MathCore.pcm\r\n-rw-r--r-- 1 pcanal pcanal 444724 Nov 10 20:35 lib/Rint.pcm\r\n\r\n\r\nthen later uses of those pcm leads to the (mis-worded) error message:\r\n\r\n\r\n<<< cling interactive line includer >>>: fatal error: module file '/home/neel/Desktop/Root/build/lib/Rint.pcm' is out of date and needs to be rebuilt: could not read module signature\r\n<<< cling interactive line includer >>>: note: imported by module 'MathCore' in '/home/neel/Desktop/Root/build/lib/MathCore.pcm'\r\nError: Module 'MathCore.pcm' failed to load.\r\nError: Error loading the default rootcling header files.\r\nmake[2]: *** [math/mathmore/CMakeFiles/G__MathMore.dir/build.make:130: math/mathmore/G__MathMore.cxx] Error 1\r\n\r\n\r\nSee the related circumstances in https://root-forum.cern.ch/t/wsl-build-from-source-error-rint-pcm-is-out-of-date-cannot-read-module-signature/47564/39\r\n\r\nThe stack trace that was triggers the auto-generation of Rint.pcm\r\n\r\n at /home/pcanal/root_working/code/master/interpreter/llvm/src/tools/clang/lib/Sema/SemaModule.cpp:325\r\n at /home/pcanal/root_working/code/master/interpreter/cling/lib/Interpreter/Interpreter.cpp:908\r\n at /home/pcanal/root_working/code/master/interpreter/cling/lib/Interpreter/Interpreter.cpp:872\r\n at /home/pcanal/root_working/code/master/core/metacling/src/TCling.cxx:1590\r\n\r\nThis PR fixes Missing Rint dependency for rootcling  #11686\r\n\r\n

[Axel-Naumann]

Just out of curiosity: did you consider the alternative of not loading Rint.pcm, at least not for rootcling?

[phsft-bot]

Build failed on mac1015/cxx17.
Running on macitois21.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build
See console output.

Failing tests:

• projectroot.gui.webdisplay.test.test_webgui_ping

[pcanal]

Just out of curiosity: did you consider the alternative of not loading Rint.pcm, at least not for rootcling?

I did not .. but I suspect there would be a risk that its content may then inadvertently be included in another pcm, isn't ?

[pcanal]

The test_webgui_ping failure is unrelated.