On 09/08/2010 03:10 PM, Nikos Chantziaras wrote:
When building GCC, it will scan all headers in /usr/include and apply fixes to
them, and then copy them and use the modified versions. Now a binary distro
(AFAIK) will ship the GCC modified headers, so there's no problem.
Gentoo on the other hand will work as intended by GCC only if the user
re-emerges GCC after every time a package is emerged that installs headers.
Obviously, no user does that.
So the question is simple; does Gentoo deal with this problem in any way?
Maybe I misunderstand your question, but AFAIK the only reason to re-compile any
package is if the libraries it links to have changed, no?
AFAICS gcc links only to libraries installed by glibc. therefore in the case of
recompiling gcc itself, it should need/use only the headers installed by glibc.
(And the only reason to re-compile an existing glibc is if the linux kernel
headers
change. I always re-compile glibc when the linux kernel headers change, but I
never thought about re-compiling gcc as well. Maybe I should.)
Corrections are requested if I'm wrong about all of this.
