On 12/11/2015 08:14 PM, Daniel Kahn Gillmor wrote:
I think you mean so that we would just ignore -fdebug-prefix-map
entirely when writing DW_AT_producer, so that you could build
reproducibly with (for example):
gcc -fdebug-prefix-map=$(pwd)=/usr/src
We'd considered and discarded this approach in the past out of concern
for possible build systems that can easily vary the environment, but
work with a static list of CFLAGS to pass to the compiler. On further
inspection, it's not clear that anyone has a concrete example of a build
system with this constraint.
Here's a one-liner patch for this approach (also at
https://gcc.gnu.org/bugzilla/attachment.cgi?id=37007):
I think that one-liner is fine, even for now.
Bernd
