[oe] sane-toolchain-glibc.inc and old g++ versions

[Holger Schurig]

On Monday 30 March 2009 16:27:37 Martin Dietze wrote:
> | CXXFLAGS += "-fvisibility-inlines-hidden"

c) enhance bitbake so that you can do

include sane-toolchain-glibc.inc
# My old compiler doesn't like this:
CXXFLAGS -= "-fvisibility-inlines-hidden"




You'd do this in lib/bb/parse/parse_py/ConfHandler.py, and need 
to start with __config_regexp__. Then search for "prepend" in 
the source. Near this place you'll need to add your new "remove" 
handling.



qmake from Qt 3.x and 4.x for example has this feature. It also 
has the cool feature of

XXX *= blah
XXX *= muh
XXX *= blah

... and afterwards, "blah" is only once in ${XXX}.