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digitalmars.D.internals - Cannot build dmd from git going from v2.78.3

reply Patrick Schluter <Patrick.Schluter bbox.fr> writes:
Hi,

I have a problem with the dmd git repository. I cannot compile de 
compiler for versions newer than v2.78.2.
I can build every version up until v2.78.2. When I try to build 
v2.78.3 I get following error message:

CC="c++" dmd -lib -of../generated/linux/release/64/lexer.a -m64 
-J../generated/linux/release/64 -L-lstdc++ -version=MARS -fPIC -w 
-de dmd/console.d dmd/entity.d dmd/errors.d dmd/globals.d 
dmd/id.d dmd/identifier.d dmd/lexer.d dmd/tokens.d dmd/utf.d 
dmd/root/array.d dmd/root/ctfloat.d dmd/root/file.d 
dmd/root/filename.d dmd/root/outbuffer.d dmd/root/port.d 
dmd/root/rmem.d dmd/root/rootobject.d dmd/root/stringtable.d 
dmd/root/hash.d
dmd/entity.d(2387): Error: undefined identifier __equals in 
module object
make[1]: *** [../generated/linux/release/64/lexer.a] Error 1
rm optabgen.out
make[1]: Leaving directory 
`/ec/dev/server/euramis/u000/schlupa/D/dmd/src'
make: *** [all] Error 2
error: make failed

Does anyone have an idea what can be wrong? Is something missing 
somewhere?


PS: the machine this is built on is an old Linux RHEL 5 which 
config is stuck to what it was when it initially came out. I 
don't have sudo or root access on it and all tools and programs I 
need have to be built from source, either from packets or git 
repos. Installing ready made binaries does not work in general.
I know, it sucks but I cannot change the policies of our IT 
environment.
May 15 2019
next sibling parent reply Sebastian Wilzbach <seb wilzba.ch> writes:
Well, what you need to do is bootstrapping as DMD is now written fully in D.

tl;dr: you need to set HOST_DMD after you build 2.078 for all future 
builds. However, as this is a very old release, chances that things don't 
work are pretty high.

You could also give the dmd-cxx branch a go. IIRC it doesn't pass the full 
DMD testsuite, but it might just be enough to build a newer DMD compiler.

Also, LDC and GDC have a better maintained C++ branch (LTS for LDC and e.g. 
official GCC 9.1 for GDC) which very likely might work better for you.

To build current DMD master you will need a dmd compiler with a frontend of 
2.076 or higher (>= GDC 8), so it might require multiple hops to build the 
latest, greatest DMD from scratch.

On 15 May 2019 09:50:42 Patrick Schluter via Dlang-internal 
<dlang-internal puremagic.com> wrote:


 Hi,

 I have a problem with the dmd git repository. I cannot compile de
 compiler for versions newer than v2.78.2.
 I can build every version up until v2.78.2. When I try to build
 v2.78.3 I get following error message:

 CC="c++" dmd -lib -of../generated/linux/release/64/lexer.a -m64
 -J../generated/linux/release/64 -L-lstdc++ -version=MARS -fPIC -w
 -de dmd/console.d dmd/entity.d dmd/errors.d dmd/globals.d
 dmd/id.d dmd/identifier.d dmd/lexer.d dmd/tokens.d dmd/utf.d
 dmd/root/array.d dmd/root/ctfloat.d dmd/root/file.d
 dmd/root/filename.d dmd/root/outbuffer.d dmd/root/port.d
 dmd/root/rmem.d dmd/root/rootobject.d dmd/root/stringtable.d
 dmd/root/hash.d
 dmd/entity.d(2387): Error: undefined identifier __equals in
 module object
 make[1]: *** [../generated/linux/release/64/lexer.a] Error 1
 rm optabgen.out
 make[1]: Leaving directory
 `/ec/dev/server/euramis/u000/schlupa/D/dmd/src'
 make: *** [all] Error 2
 error: make failed

 Does anyone have an idea what can be wrong? Is something missing
 somewhere?


 PS: the machine this is built on is an old Linux RHEL 5 which
 config is stuck to what it was when it initially came out. I
 don't have sudo or root access on it and all tools and programs I
 need have to be built from source, either from packets or git
 repos. Installing ready made binaries does not work in general.
 I know, it sucks but I cannot change the policies of our IT
 environment.
May 15 2019
parent Patrick Schluter <Patrick.Schluter bbox.fr> writes:
On Wednesday, 15 May 2019 at 08:08:21 UTC, Sebastian Wilzbach 
wrote:

 Well, what you need to do is bootstrapping as DMD is now 
 written fully in D.

 tl;dr: you need to set HOST_DMD after you build 2.078 for all 
 future builds. However, as this is a very old release, chances 
 that things don't work are pretty high.

 You could also give the dmd-cxx branch a go. IIRC it doesn't 
 pass the full DMD testsuite, but it might just be enough to 
 build a newer DMD compiler.

 Also, LDC and GDC have a better maintained C++ branch (LTS for 
 LDC and e.g. official GCC 9.1 for GDC) which very likely might 
 work better for you.

 To build current DMD master you will need a dmd compiler with a 
 frontend of 2.076 or higher (>= GDC 8), so it might require 
 multiple hops to build the latest, greatest DMD from scratch.

 On 15 May 2019 09:50:42 Patrick Schluter via Dlang-internal 
 <dlang-internal puremagic.com> wrote:


 Hi,

 I have a problem with the dmd git repository. I cannot compile 
 de
 compiler for versions newer than v2.78.2.
 I can build every version up until v2.78.2. When I try to build
 v2.78.3 I get following error message:

 CC="c++" dmd -lib -of../generated/linux/release/64/lexer.a -m64
 -J../generated/linux/release/64 -L-lstdc++ -version=MARS -fPIC 
 -w
 -de dmd/console.d dmd/entity.d dmd/errors.d dmd/globals.d
 dmd/id.d dmd/identifier.d dmd/lexer.d dmd/tokens.d dmd/utf.d
 dmd/root/array.d dmd/root/ctfloat.d dmd/root/file.d
 dmd/root/filename.d dmd/root/outbuffer.d dmd/root/port.d
 dmd/root/rmem.d dmd/root/rootobject.d dmd/root/stringtable.d
 dmd/root/hash.d
 dmd/entity.d(2387): Error: undefined identifier __equals in
 module object
 make[1]: *** [../generated/linux/release/64/lexer.a] Error 1
 rm optabgen.out
 make[1]: Leaving directory
 `/ec/dev/server/euramis/u000/schlupa/D/dmd/src'
 make: *** [all] Error 2
 error: make failed

 Does anyone have an idea what can be wrong? Is something 
 missing
 somewhere?


 PS: the machine this is built on is an old Linux RHEL 5 which
 config is stuck to what it was when it initially came out. I
 don't have sudo or root access on it and all tools and 
 programs I
 need have to be built from source, either from packets or git
 repos. Installing ready made binaries does not work in general.
 I know, it sucks but I cannot change the policies of our IT
 environment.




Thank you.
I managed to get it to compile by starting from 0. I 
re-downloaded everything in a new directory and used the 
BOOTSTRAP=1 option and it managed to work. Apprently my proxy 
setting is ok now as that didn't work last time I had tried 
several months ago. So the binary dmd downloaded managed to 
compile everything as it should and all worked well now.
What I will test in anycase when I have time, is if I can 
reproduce my issue because I think it is somehow interesting.
You see, the downloaded dmd when bootstrapping is 2.79.1 which is 
a version ulterior to the one I was not able to build. What I 
think is that you can build dmd with its predecessor up until 
version 2.78.2.
Any version after that, even 2.78.3, fails to be built with an 
older version, and as Carl said below, it is probably not a dmd 
issue but a druntime problem.

In practice, I don't think it is problematic per se, as in most 
cases binary distributions and the BOOTSTRAPPING works as 
intended, but it is a little issue that can be annoying in cases 
of extreme no binary download policies like we have in our IT 
infrastructure.

As said, I will check that later.
May 15 2019
prev sibling parent Jacob Carlborg <doob me.com> writes:
On 2019-05-15 09:46, Patrick Schluter wrote:

 Hi,
 
 I have a problem with the dmd git repository. I cannot compile de 
 compiler for versions newer than v2.78.2.
 I can build every version up until v2.78.2. When I try to build v2.78.3 
 I get following error message:
 
 CC="c++" dmd -lib -of../generated/linux/release/64/lexer.a -m64 
 -J../generated/linux/release/64 -L-lstdc++ -version=MARS -fPIC -w -de 
 dmd/console.d dmd/entity.d dmd/errors.d dmd/globals.d dmd/id.d 
 dmd/identifier.d dmd/lexer.d dmd/tokens.d dmd/utf.d dmd/root/array.d 
 dmd/root/ctfloat.d dmd/root/file.d dmd/root/filename.d 
 dmd/root/outbuffer.d dmd/root/port.d dmd/root/rmem.d 
 dmd/root/rootobject.d dmd/root/stringtable.d dmd/root/hash.d
 dmd/entity.d(2387): Error: undefined identifier __equals in module object
 make[1]: *** [../generated/linux/release/64/lexer.a] Error 1
 rm optabgen.out
 make[1]: Leaving directory `/ec/dev/server/euramis/u000/schlupa/D/dmd/src'
 make: *** [all] Error 2
 error: make failed
 
 Does anyone have an idea what can be wrong? Is something missing somewhere?


As far as I know `__equals` is a function that the compiler lowers 
comparisons to. If I would guess I would say that your host compiler and 
its druntime doesn't match.

-- 
/Jacob Carlborg
May 15 2019