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D.gnu - GDC buildable on solaris?

reply Chris Piker <chris hoopjump.com> writes:
Hi GDC

I'm temporarily working on an old solaris big-endian system, 
which happens to have GCC 4.9.  I think this could be recent 
enough to boot-strap gcc-11.2 (and of course gdc).  But before I 
attempt to build gdc on such an odd beast, does anyone know if 
gdc is big-endian safe?  Would it even be worth the attempt?

Thanks ...and thanks for gdc.
Mar 12 2022
parent reply Iain Buclaw <ibuclaw gdcproject.org> writes:
On Sunday, 13 March 2022 at 06:46:47 UTC, Chris Piker wrote:

 Hi GDC

 I'm temporarily working on an old solaris big-endian system, 
 which happens to have GCC 4.9.  I think this could be recent 
 enough to boot-strap gcc-11.2 (and of course gdc).  But before 
 I attempt to build gdc on such an odd beast, does anyone know 
 if gdc is big-endian safe?  Would it even be worth the attempt?

 Thanks ...and thanks for gdc.


1. Yes, the [minimum 
version](https://gcc.gnu.org/install/prerequisites.html) required 
to bootstrap latest version of gcc is 4.8 (ISO C++11 compiler).

2. Current mainline gdc requires a D compiler, so the minimum 
version to bootstrap is 9.1 - though preferably you should have 
at least 9.4 or 10.1 because of [belated 
bugs](https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104749) that 
were discovered too late on some platforms when verifying their 
ability to bootstrap themselves.

3. gdc (and the dmd front-end) is big-endian and strict-alignment 
safe, sometimes upstream wobbles a bit an introduces regressions 
- there have been a few since 2.076..2.099 - but those have 
caught early enough in development that they are no longer a 
problem.

To highlight a couple examples in both the compiler and D runtime 
library.
https://github.com/dlang/dmd/pull/13324
https://github.com/dlang/dmd/pull/13703
https://github.com/dlang/druntime/pull/3774
https://github.com/dlang/druntime/pull/3775

4. gdc is routinely compiled and tested on Solaris 
[i386](https://gcc.gnu.org/pipermail/gcc-testresults/2022-March/756623.html)
and [sparc](https://gcc.gnu.org/pipermail/gcc-testresults/2022
March/756625.html). An incoming merge is about to land that should reduce the
number of fails tests in the dmd testsuite on sparc. (See the linked druntime
patches ;-)
Mar 13 2022
parent kdevel <kdevel vogtner.de> writes:
On Sunday, 13 March 2022 at 11:09:56 UTC, Iain Buclaw wrote:

 [...]
 2. Current mainline gdc requires a D compiler, so the minimum 
 version to bootstrap is 9.1 - though preferably you should have 
 at least 9.4 or 10.1 because of [belated 
 bugs](https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104749) that 
 were discovered too late on some platforms when verifying their 
 ability to bootstrap themselves.
 [...]


Is it correct that "current mainline" implies GCC-12? Few days 
ago I bootstrapped GCC/GDC 11.2 without having a gdc installed. 
configure of GCC 12 now says:

     configure: error: GDC is required to build d
Apr 17 2022