[cmucl-imp] About the compilation of cmucl with recent versions of GCC.

[Juan Pablo Hierro Álvarez]

Dear sirs,

This is my first mail to this list and do not expect to remain very active.

I was running a Fedora 29 machine and tried to install cmucl 21d.

Binaries worked without trouble. However, I decided to try and bootstrap 
the system, only to head into open issue #68.

https://gitlab.common-lisp.net/cmucl/cmucl/issues/68

I write this message because I think that I have found a work-around:

In file
cmucl/src/lisp/Config.x86_common

I had to exchange the line

CFLAGS += -O2

with

CFLAGS += -O1

That is to say, latest versions of the gcc compiler are only able to 
produce a working cmucl lisp binary
with an optimization level up to -O1.

---

The proposed replacement of gcc by clang *(Commit 82bf2c72) *worked too. 
By the way, clang apparently works fine with optimization -O3.

-----------

Notwithstanding the previous assertions, I run tests and all of them 
worked but for "issue.45".

Failed tests: (ISSUES-TESTS::ISSUE.45)
  | Failed Form: (GET-OUTPUT-STREAM-STRING ISSUES-TESTS::S)
  | Expected "ls-link
" but saw "/usr/bin/env: 'test-tmp/ls-link': No such file or directory
"
  |
  | Failed Form: (PROCESS-EXIT-CODE ISSUES-TESTS::PROCESS)
  | Expected 0 but saw 127
  |
  | Failed Form: (GET-OUTPUT-STREAM-STRING ISSUES-TESTS::S)
  | Expected "ls-link
" but saw "ls: cannot access 'test-tmp/': No such file or directory
"
  |
  | Failed Form: (PROCESS-EXIT-CODE ISSUES-TESTS::PROCESS)
  | Expected 0 but saw 2
  |
  | Failed Form: (GET-OUTPUT-STREAM-STRING ISSUES-TESTS::S)
  | Expected "ls-link
" but saw "/bin/ls: cannot access 'test-tmp/': No such file or directory
"
  |
  | Failed Form: (PROCESS-EXIT-CODE ISSUES-TESTS::PROCESS)
  | Expected 0 but saw 2
  |
ISSUE.45: 0 assertions passed, 6 failed.


Of course, there were no test-tmp directory in my file system. Is this 
an expected behaviour or should the tests have created the needed 
directories and files?


Yours faithfully,

----

Juan Hierro.