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1.1
date	2026.06.09.12.32.34;	author mef;	state Exp;
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1.1
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@(math/R-RcppEigen) Fix build against R-4.6.0
@
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@$NetBSD$

- The Problem is:
  RcppEigen.so: Undefined PLT symbol "backtrace_symbols" (symnum = 108)

- The symbol "backtrace_symbols" is defined in /usr/lib/libexecinfo
  at *BSD OS

- R package does not honor LIBS+= parameter, due to real build is done
  at (pkgsrc) install stage

- Neither bmake (.if eq ... .endif) nor gmake ( ifneq .. endif) does work
  in src/Makevars

- So the condition branch will be done at SUBST mechanism

--- src/Makevars.orig	2023-07-21 06:30:13.000000000 +0900
+++ src/Makevars	2026-06-09 21:06:42.551092341 +0900
@@@@ -5,6 +5,7 @@@@ PKG_CXXFLAGS = -I../inst/include
 
 ## One could add '-fopenmp' here (and above) for multithreaded operations
 PKG_LIBS = $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS)
+@@@@PKG_LIBS@@@@
 
 ## We are not enabling multithreaded operations by default because this would be
 ## a change in behaviour that would like create trouble for packages using RcppEigen
@