libgcc11 @11.3.0: build fails on 10.6.8 due to many bootstrap comparison failures

[kencu (Ken)]

​https://build.macports.org/builders/ports-10.6_x86_64-builder/builds/101791/steps/install-port/logs/stdio

[kencu (Ken)]

Comparing stages 2 and 3
warning: gcc/cc1objplus-checksum.o differs
Bootstrap comparison failure!
gcc/alias.o differs
gcc/analyzer/analyzer-logging.o differs
gcc/analyzer/analyzer.o differs
gcc/analyzer/bar-chart.o differs
gcc/analyzer/call-string.o differs
gcc/analyzer/checker-path.o differs
gcc/analyzer/constraint-manager.o differs
gcc/analyzer/diagnostic-manager.o differs
gcc/analyzer/engine.o differs
gcc/analyzer/feasible-graph.o differs
gcc/analyzer/program-point.o differs

== many more deleted ==

[mascguy (Christopher Nielsen)]

This is blocking builds of gcc11 on 10.6, in turn causing a cascading set of downstream build failures.

[mascguy (Christopher Nielsen)]

Also see potentially-related discussion here:

​https://github.com/macports/macports-ports/commit/5e3956a24566eb894055b5d019e92f132b7434cb#commitcomment-72092861

[kencu (Ken)]

probably just do something like this and be done with bootstrap comparison, at least on 10.6

​https://github.com/macports/macports-ports/commit/8ec8efb9c864fcacb7cffcad324bdec24c966991

[mascguy (Christopher Nielsen)]

PR created:

​15008 - gcc11/libgcc11: skip bootstrap comparison for 10.6 and earlier

Feedback appreciated!

[Christopher Nielsen <mascguy@…>]

In 7dc5446d14b9a72321a554ded8f903baea65f848/macports-ports (master):

gcc11/libgcc11: skip bootstrap comparison for 10.6 and earlier
Fixes: #65149

[jmroot (Joshua Root)]

Still broken on i386, BTW: #65054