I am trying to build a project with GDC. It successfully compiles with dmd and ldmd2. When I use gdc in one go the binary is successfully build:

$ gdc -o ppinsta esah.d evaluate.d jsr.d jsw.d parser.d ppinsta.d ptvr.d stack.d testdatagenerator.d

Though after compiling separately the linking fails:

$ make -f Makefile.gdc -j3
gdc -o ppinsta.o -c ppinsta.d
gdc -o esah.o -c esah.d
gdc -o evaluate.o -c evaluate.d
gdc -o jsr.o -c jsr.d
gdc -o jsw.o -c jsw.d
gdc -o parser.o -c parser.d
gdc -o ptvr.o -c ptvr.d
gdc -o stack.o -c stack.d
gdc -o testdatagenerator.o -c testdatagenerator.d
gdc -o ppinsta ppinsta.o esah.o evaluate.o jsr.o jsw.o parser.o ptvr.o stack.o testdatagenerator.o
ppinsta.o: In function `_D3std6format8internal5write__T8getWidthTAyaZQoFNaNfQlZl':
ppinsta.d:(.text+0x1c5a): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAyaZQoFQhZ9__lambda2Z__TQCpTQBcZQCxMFNaNfQBpZb'
ppinsta.o: In function `_D3std6format8internal5write__T20formatValueImplUlongTSQCb5array__T8AppenderTAyaZQoTaZQCdFNaNfKQBpmIbMKxSQDzQDy4spec__T10FormatSpecTaZQpZv':
ppinsta.d:(.text+0x2bcc): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T20formatValueImplUlongTSQDg5array__T8AppenderTAyaZQoTaZQCdFKQBlmIbMKxSQFaQDu4spec__T10FormatSpecTaZQpZ10__lambda16Z__TQFvTAaZQGcMFNaNfQmZb'
ppinsta.d:(.text+0x2c5b): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T20formatValueImplUlongTSQDg5array__T8AppenderTAyaZQoTaZQCdFKQBlmIbMKxSQFaQDu4spec__T10FormatSpecTaZQpZ10__lambda17Z__TQFvTAaZQGcMFNaNfQmZb'
collect2: error: ld returned 1 exit status
make: *** [ppinsta] Error 1

Any ideas?

On Saturday, 28 May 2022 at 13:12:46 UTC, kdevel wrote:

Is seperate compilation working successfully for dmd and ldc?

The only bug I know of regarding seperate compilation is https://issues.dlang.org/show_bug.cgi?id=20641

On Saturday, 28 May 2022 at 13:12:46 UTC, kdevel wrote:

ppinsta.d

import std.stdio : write, writeln;
import parser; // <- comment this out and gdc links

void main ()
{
   string [string] h;
   writeln (h);
}

parser.d

module parser;
import std.regex : regex;

private immutable auto VariableName = regex("^[a-zA-Z]*$");

Compile in one go:

$ gdc -o ppinsta ppinsta.d parser.d
$ ./ppinsta
[]

Compiled separately:

$ gdc -c ppinsta.d
$ gdc -c parser.d
$ gdc -o ppinsta ppinsta.o parser.o
ppinsta.o: In function `_D3std6format8internal5write__T8getWidthTAyaZQoFNaNfQlZl':
ppinsta.d:(.text+0x11ea): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAyaZQoFQhZ9__lambda2Z__TQCpTQBcZQCxMFNaNfQBpZb'
ppinsta.o: In function `_D3std6format8internal5write__T8getWidthTAaZQnFNaNfQkZl':
ppinsta.d:(.text+0x16ba): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAaZQnFQgZ9__lambda2Z__TQCoTQBbZQCwMFNaNfQBoZb'
ppinsta.o: In function `_D3std6format8internal5write__T20formatValueImplUlongTSQCb5array__T8AppenderTAyaZQoTaZQCdFNaNfKQBpmIbMKxSQDzQDy4spec__T10FormatSpecTaZQpZv':
ppinsta.d:(.text+0x21d9): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T20formatValueImplUlongTSQDg5array__T8AppenderTAyaZQoTaZQCdFKQBlmIbMKxSQFaQDu4spec__T10FormatSpecTaZQpZ10__lambda16Z__TQFvTAaZQGcMFNaNfQmZb'
ppinsta.d:(.text+0x2268): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T20formatValueImplUlongTSQDg5array__T8AppenderTAyaZQoTaZQCdFKQBlmIbMKxSQFaQDu4spec__T10FormatSpecTaZQpZ10__lambda17Z__TQFvTAaZQGcMFNaNfQmZb'
ppinsta.o: In function `_D3std6format8internal5write__T8getWidthTAwZQnFNaNbNiNfQoZl':
ppinsta.d:(.text+0x2996): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAwZQnFQgZ9__lambda2Z__TQCoTQBbZQCwMFNaNbNiNfQBsZb'
collect2: error: ld returned 1 exit status

On Saturday, 28 May 2022 at 13:55:09 UTC, Tejas wrote:

dmd:

$ dmd -c ppinsta.d
$ dmd -c parser.d
$ dmd -of=ppinsta ppinsta.o parser.o
$ ./ppinsta
[]

(checking ldc/ldmd2 later)

On 5/28/22 10:44 AM, Adam D Ruppe wrote:

It should only think that if it sees it instantiated.

If it's instatiated in std, it should be included in the built phobos library. If it's not instantiated in std, then the compiler should be putting it inside the object file.

Is this specific to gdc, or does it happen for other compilers as well?

-Steve

On Saturday, 28 May 2022 at 14:37:07 UTC, kdevel wrote:

$ dmd -c ppinsta.d
$ dmd -c parser.d
$ dmd -of=ppinsta ppinsta.o parser.o
$ ./ppinsta
[]

$ ldc2 -c ppinsta.d && ldc2 -c parser.d && ldc2 -of=ppinsta ppinsta.o parser.o && ./ppinsta
[]

$ ldmd2 -c ppinsta.d && ldmd2 -c parser.d && ldmd2 -of=ppinsta ppinsta.o parser.o && ./ppinsta
[]

Both okay.