On May 9, 2006, at 1:11 PM, Kasper Daniel Hansen wrote:
> It is indeed the case that after updating to GCC 4 the package
> gets broken using -O2. I agree this needs to be fixed, but the error
> [...]
> unfortunately), but reading your comment about CPPFLAGS and
> CXXFLAGS makes me think I can indeed override it using the package
> Makevars file. The flags I was passing to the compiler were library
> locations anyway which was for the preprocessor.
>
AFAIR you cannot override CPPFLAGS/CXXFLAGS in Makevars, because it
gets included first. You can, however, use something like this:
all: $(SHLIB)
MYCFLAGS=-O0
%.o: %.c
$(CC) $(ALL_CPPFLAGS) $(ALL_CFLAGS) $(MYCFLAGS) -c $< -o $@
for C, or for C++ accordingly:
%.o: %.cc
$(CXX) $(ALL_CPPFLAGS) $(ALL_CXXFLAGS) $(MYCXXFLAGS) -c $< -
o $@
However, don't ask me how portable this is ;). It exploits the fact
that old-style rules .c.o used by Makeconf are overridden by the new-
style rules regardless of their position. Nevertheless, you could
still use specific rules if desired without a full-blown Makefile. (I
always recommend the use of Makevars as far as possible, because most
writers of Makefiles get the shlib compilation wrong).
Cheers,
Simon
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