Error building gerbil

[jeback1]

Fresh install of gambit (v4.8.9); all 14 checks completed successfully.
When building gerbil on Fedora Linux 27:
... compile debug/heap
In file included from heap__0.c:352:0:
heap__0.c: In function ‘___H_heap____0’:
heap__0.c:11295:54: error: ‘___BODY_OFS’ undeclared (first use in this function); did you mean ‘___BODY_AS’?
___SCMOBJ next = ___TAG((base + ___STILL_HAND_OFS - ___BODY_OFS),
^
/usr/local/Gambit/include/gambit.h:1683:34: note: in definition of macro ‘___CAST’
#define ___CAST(type,val)((type)(val))
^~~
heap__0.c:11295:19: note: in expansion of macro ‘___TAG’
___SCMOBJ next = ___TAG((base + ___STILL_HAND_OFS - ___BODY_OFS),
^~~~~~
heap__0.c:11295:54: note: each undeclared identifier is reported only once for each function it appears in
___SCMOBJ next = ___TAG((base + ___STILL_HAND_OFS - ___BODY_OFS),
^
/usr/local/Gambit/include/gambit.h:1683:34: note: in definition of macro ‘___CAST’
#define ___CAST(type,val)((type)(val))
^~~
heap__0.c:11295:19: note: in expansion of macro ‘___TAG’
___SCMOBJ next = ___TAG((base + ___STILL_HAND_OFS - _BODY_OFS),
^~~~~~
*** ERROR IN ##main -- target compilation or link failed while compiling "/home/k/src/gerbil/lib/std/debug/heap__0.scm"
*** ERROR IN gxc#compile-scm-file% -- Syntax Error
*** ERROR IN ?
--- Syntax Error at compile: Compilation error; gsc exit with nonzero status
... form: "/home/k/src/gerbil/lib/std/debug/heap__0.scm"
... detail: 17920
*** ERROR; build failed
[k@grisea src]$ ls

[vyzo]

hrm, interesting. how is your gambit configured?

[jeback1]

The only flag was --enable-single-host. I ran configure as: ./configure --enable-single-host
Would the --enable-debug flag be relevant here?

[vyzo]

I can't reproduce it locally, you might want to just comment out debug/heap from std/build.ss for now.

[Negdayen]

Receiving this same error.

$ uname -a
Linux xubuntu 4.10.0-28-generic #32~16.04.2-Ubuntu SMP Thu Jul 20 10:19:48 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Configured Gambit 4.8.9 (commit edac3c75f0d93f4f56a39c2b90621511f096dd72) with:
./configure --enable-shared --enable-multiple-versions --enable-absolute-shared-libs --enable-sharp-dot

[vyzo]

interesting, not sure what's up.

@fare care to take a look and try to reproduce on nixOS?

[vyzo]

Also, can you try with Gambit from master?

[fare]

Yes, I can reproduce on NixOS, after updating gambit to 4.8.9-41-gedac3c75, gerbil to 0.13-DEV-431-gd28ecaf3:

... compile debug/heap
In file included from heap__0.c:352:0:
heap__0.c: In function '___H_heap____0':
heap__0.c:11295:54: error: '___BODY_OFS' undeclared (first use in this function); did you mean '___BODY_AS'? 
  ___SCMOBJ next = ___TAG((base + ___STILL_HAND_OFS - ___BODY_OFS),
                                                      ^
heap__0.c:11295:54: note: each undeclared identifier is reported only once for each function it appears in
*** ERROR; build failed
builder for ‘/nix/store/xafjknf4cil2i60f2lndgv68cc86qmk7-gerbil-unstable-2018-05-01.drv’ failed with exit code 1
error: build of ‘/nix/store/xafjknf4cil2i60f2lndgv68cc86qmk7-gerbil-unstable-2018-05-01.drv’ failed

[vyzo]

ok, something broke. Anyone mind #ifndef/define ____BODY_OFS?

[fare]

Looks like ___BODY_OFS disappeared in this recent Gambit commit:
gambit/gambit@4c4addd

[vyzo]

hrm, this affects more places in the ffi -- ___HEADER seems to have been replaced by ___SUBTYPED_HEADER.

[vyzo]

Seems like it's simply a matter of defining ___BODY_OFS as needed for now; see #79.