Kasper Daniel Hansen <[EMAIL PROTECTED]> writes:
> Hi
>
> We are currently embedding a rather large C++ library in R (BioC),
> and we want some comments on the portability of how we have approach
> this.
>
> First of, we are not really able to do much about the portability of
> the basic library, which of course is the main question :) We have an
> approach which seems to work, I just want a bit of feedback on it....
>
> The way we integrate it into R is simply by having a subdirectory /
> src/sdk together with a Makevars file. This file basically looks like
>
> PKG_CPPFLAGS+=\
> -imacros R_affx_constants.h\
> -Isdk/files\
> (... + a lot of other -I statements telling CPP to include
> subdirectories of src/sdk)
>
> Then we have a
>
> SOURCES.SDK = \
> sdk/files/FileIO.cpp \
> (... + a lot of other .cpp files)
> SOURCES.OURS = \
> R_affx_cdf.cpp
>
> and then finally a
>
> OBJS=$(SOURCES.SDK:.cpp=.o) $(SOURCES.OURS:cpp:.o)
>
> We seem to need the last statement since it seems that .cpp is not
> automatically a C++ suffix (but is it done the "right" way for
> portability?).
Er, I don't think it has to do with .cpp being a known suffix or not.
If it wasn't, you would use SUFFIXES and a .cpp.o rule. The last line
comes from specifying sources, rather than objects.
Traditional make style would be
OBJS.SDK = \
sdk/files/FileIO.o \
(... + a lot of other .cpp files)
OBJS.OURS = \
R_affx_cdf.o
OBJS = $(OBJS.SDK) $(OBJS.OURS)
from which the suffix rules would deduce the source files.
> We need the -imacro statement in order to include some
> macros from Rconfig.h (big endian checks) which are then translated
> from the WORDS_BIGENDIAN used in R to the IS_BIG_ENDIAN used in the
> library.
>
> Comments on the portability?
>
> Kasper
>
> ______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-devel
>
--
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
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