Re: Fun with auto generated dependencies & clean...

[Greg Chicares]

On 2007-04-19 22:46Z, Rick Flower wrote:
> 
> I'm using some pretty old compilers (gcc-2.95.3 for ppc and gcc-2.9 for
> pentium) and both seem to handle -MMD properly and generate the
> requisite .d files, but neither version knows anything about -MF or -MT
> so I guess I'll have to do without..

Here are some notes I wrote when switching from '-MD' to '-MMD':

# Subsequent change: now '-MMD' is used. It was measured to improve
# build speed by five or ten percent over '-MD'. It would be dangerous
# to use with any preprocessor older than gcc-3.x's: the documentation
# for gcc-2.95's preprocessor says it treats
#   #include <my_own_header_included_with_angle_brackets.hpp>
# as a system file, which would be most undesirable [...]
[because some third-party code uses angle brackets internally]