Pkgbuild::compile_dll() on previously working rstantools-based package fails with "file too big" error

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For future reference as well, this can also be resolved by adding:

PKG_CXXFLAGS += -Wa,-mbig-obj

To the package’s Makevars file. For packages using rstantools-based installation, this can be implemented by adding the following to the bottom of the package’s configure and configure.win scripts:

configure:

# Add configuration needed for big object files
echo "PKG_CXXFLAGS += -Wa,-mbig-obj" >> ./src/Makevars

configure.win:

# Add configuration needed for big object files
echo "PKG_CXXFLAGS += -Wa,-mbig-obj" >> ./src/Makevars.win
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