Hi,
Similar questions have come up before on the list and elsewhere but I
haven't found a solution yet.
winbuilder's install.out shows data.table's .c files compiled with -O3
on Win32 but -O2 on Win64. The same happens on R-Forge. I gather that
some packages don't work with -O3 so the default is -O2.
I've tried this in data.table's Makevars (entire contents) :
====
MAKEFLAGS="CFLAGS=-O3" # added
CFLAGS=-O3 # added
PKG_CFLAGS=-O3 # added
all: $(SHLIB) # no change
mv $(SHLIB) datatable$(SHLIB_EXT) # no change
====
but -O2 still appears in winbuilder's install.out (after -O3, and I
believe the last -O is the one that counts) :
gcc -m64 -I"D:/RCompile/recent/R-2.15.2/include" -DNDEBUG
-I"d:/Rcompile/CRANpkg/extralibs215/local215/include" -O3 -O2 -Wall
-std=gnu99 -mtune=core2 -c dogroups.c -o dogroups.o
How can I ensure that data.table is compiled with -O3 on Win64?
Thanks, Matthew
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