Hi, All,
I have come across a problem building a DLL from .f90 source (R 2.3.1,
Windows XP). When using the R CMD SHLIB procedure, the DLL itself was
being built, but its export table was empty.
Among the output from R CMD SHLIB the following message appeared:
c:\mingw\bin\nm.exe: 'a.out': No such file
The reason is the empty list of dependencies in the pattern rule for
DLLs contained in the file MkRules:
%.dll:
@$(ECHO) EXPORTS > $*.def
@$(NM) $^ | $(SED) -n 's/^........ [BCDRT] _/ /p' >> $*.def
The dependencies list is constructed in the MakeDll file that contains
the following:
CFSOURCES=$(wildcard -f *.c *.f *.f90 *.f95)
CSOURCES=$(wildcard -f *.c)
CXXSOURCES=$(wildcard -f *.cc *.cpp *.C)
FSOURCES=$(wildcard -f *.f)
FCSOURCES=$(wildcard -f *.f90 *.f95)
OBJSA=$(foreach i,$(CSOURCES) $(FSOURCES) $(CXXSOURCES),$(basename $i).o)
Observe that the neither CFSOURCES nor FCSOURCES in included in OBJSA,
i.e. an object file made from a f90 source never becomes part of
dependencies. If I add $(FCSOURCES) to OBJSA, the DLL gets built
correctly.
I wonder whether there is a reason for not including .f90 (and .f95)
sources in the list of dependencies or this can be considered a bug in
R.
WBR
--
Mstislav Elagin
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