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Postings from March 2003
Hi,
XS currently supports C++ but the generated files are named with the
termination ".c" and so they are compiled by the C compiler instead of
by the C++ one. Too work around this, CC has to be defined in the
Makefile.PL script pointing to the C++ compiler. This is ugly and rather
unportable.
Looking at MakeMaker sources and p5p archives it seems that at some
point rules to compile ".xs" to ".cpp" were added but that they were
removed later because they caused a diamond relation that could break
the make process:
file.xs --> file.c --> file.o
file.xs --> file.cpp --> file.o
there are two paths to go from .xs to .o and make doesn't know which one
to take.
There is an obvious solution to this problem: to use a different
termination for XS files containing C++ code, say .xss so
file.xs --> file.c --> file.o
file.xss --> file.cpp --> file.o
That's what the included MakeMaker patch does. Specifically, it ...
- defines new xss_cpp and xss_o subs to create Makefile rules ".xss.cpp"
and ".xss.o"
- adds --xss option to h2xs to use that extension
- adds some docs to perlxs.pod
- tests for the new feature
I have only changed MM_Unix and MM_Win32/95, and only tested under
linux, other architectures will also require changes, but I lack access
to them (and the knowledge also) to do it.
Bye,
- salva
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