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From 4a4df0190ad24c0a3636994c2c23cb6c22e04589 Mon Sep 17 00:00:00 2001
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From: Mattias Ellert <mattias.ellert@physics.uu.se>
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Date: Thu, 24 Mar 2022 15:41:33 +0100
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Subject: [PATCH 2/3] Remove namespace RooFit from libRooFitCore's LinkDef
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The namespace is listed in the LinkDef's for both libRooFit and libRooFitCore.
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ROOT only autoloads one of the libraries, for some reason usually
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libRooFitCore. After this only symbols in the namespace from that
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library are present. By removing the namespace from liRooFitCore's
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LinkDef, only libRooFit can be chosen when autoloading. Since
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libRooFit depends on libRooFitCore, both libraries are loaded, and the
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symbols from the namespace in both libraries are available.
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Fixes error:
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IncrementalExecutor::executeFunction: symbol '_ZN6RooFit12bindFunctionEPKcPFddER10RooAbsReal' unresolved while linking function '_GLOBAL__sub_I_cling_module_217'!
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You are probably missing the definition of RooFit::bindFunction(char const*, double (*)(double), RooAbsReal&)
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Maybe you need to load the corresponding shared library?
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Symbol found in '/builddir/build/BUILD/root-6.26.00/redhat-linux-build/lib/libRooFit.so.6.26.00'; did you mean to load it with '.L /builddir/build/BUILD/root-6.26.00/redhat-linux-build/lib/libRooFit.so.6.26.00'?
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---
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roofit/roofitcore/inc/LinkDef.h | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/roofit/roofitcore/inc/LinkDef.h b/roofit/roofitcore/inc/LinkDef.h
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index d421fd95cd..72c66db33b 100644
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--- a/roofit/roofitcore/inc/LinkDef.h
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+++ b/roofit/roofitcore/inc/LinkDef.h
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@@ -105,7 +105,10 @@
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// Old LinkDef2.h
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-#pragma link C++ namespace RooFit ;
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+
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+// "namespace RooFit" is in roofit/roofit/inc/Linkdef1.h
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+// should not be in the dictionary for two different libraries
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+// #pragma link C++ namespace RooFit ;
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#pragma link C++ namespace RooFitShortHand ;
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#pragma link C++ class RooDouble+ ;
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#pragma link C++ class RooEffGenContext+ ;
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--
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2.35.1
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