• Thomas Mader (25/25) May 04 2018 The dmd package on NixOS doesn't work anymore in their master
• Johannes Loher (53/54) May 04 2018 Here is a demangled version of what you posted:
• Thomas Mader (148/151) May 05 2018 Here comes the entire demangled output of the Hello World build.
• Thomas Mader (4/6) May 08 2018 Has anyone tried to compile with glibc 2.27?
• Seb (5/11) May 08 2018 Yep, using 2.27-3 on ArchLinux here and everything builds fine.
• Thomas Mader (25/27) May 09 2018 Since dmd still works correctly on the stable branch I tried to
• Thomas Mader (5/6) May 10 2018 My suspicion about the switch to glibc 2.27 being the problem was
• Thomas Mader (5/9) May 18 2018 Can somebody help me to answer the question from
• Mike Franklin (8/17) May 18 2018 I'm not sure I understand. Does binutils need to be used to
• Johannes Pfau (7/22) May 18 2018 As far as I know, that's correct. GCC-based compilers emit ASM
• Thomas Mader (7/12) May 18 2018 That would be my understanding as well.
• Thomas Mader (6/10) May 19 2018 I found the problem.

Thomas Mader <thomas.mader gmail.com> writes:

The dmd package on NixOS doesn't work anymore in their master 
branch.
They must have changed something in the C environment or 
something and I don't have a clue what's going on.
Building the package succeeds but when I try to build with the 
newly build binary I get all sorts of linker errors.
Maybe someone can give me some hints?
Here you see a small piece of the output if I try to build a 
simple hello world with it.

dmd hello.d
hello.o: In function `_D3std5stdio__T7writelnTAyaZQnFNfQjZv':
hello.d:(.text._D3std5stdio__T7writelnTAyaZQnFNfQjZv[_D3std5stdio__T7writelnTA
aZQnFNfQjZv]+0x46): undefined reference to
`_D3std5stdio4File17lockingTextWriterMFNfZSQBoQBnQBk17LockingTextWriter'
hello.d:(.text._D3std5stdio__T7writelnTAyaZQnFNfQjZv[_D3std5stdio__T7writelnTA
aZQnFNfQjZv]+0x57): undefined reference to `_D3std5stdio4File6__dtorMFNfZv'
hello.d:(.text._D3std5stdio__T7writelnTAyaZQnFNfQjZv[_D3std5stdio__T7writelnTA
aZQnFNfQjZv]+0xa4): undefined reference to
`_D3std5stdio4File17LockingTextWriter10__aggrDtorMFNeZv'
hello.o:(.data.DW.ref.__dmd_personality_v0+0x0): undefined 
reference to `__dmd_personality_v0'
hello.o: In function 
`_D3std9exception__T12errnoEnforceTiVAyaa83_2f6e69782f73746f72652f783977667070677a30377a676b733979666e37633936393635776d726c3078642d646d644275696c642d322e3037392e312f696e636c7564652f64322f7374642f737464696f2e64Vmi2877ZQHqFNfiLQHhZi':
hello.d:(.text._D3std9exception__T12errnoEnforceTiVAyaa83_2f6e69782f73746f72652f783977667070677a30377a676b733979666e37633936393635776d726c3078642d646d644275696c642d322e3037392e312f696e636c7564652f64322f7374642f737464696f2e64Vmi2877ZQHqFNfiLQHhZi[_D3std9exception__T12errnoEnforceTiVAyaa83_2f6e69782f73746f72652f783977667070677a30377a676b733979666e37633936393635776d726c3078642d646d644275696c642d322e3037392e312f696e636c7564652f64322f7374642f737464696f2e64Vmi2877ZQ
qFNfiLQHhZi]+0x20): undefined reference to
`_D3std9exception14ErrnoException7__ClassZ'
hello.d:(.text._D3std9exception__T12errnoEnforceTiVAyaa83_2f6e69782f73746f72652f783977667070677a30377a676b733979666e37633936393635776d726c3078642d646d644275696c642d322e3037392e312f696e636c7564652f64322f7374642f737464696f2e64Vmi2877ZQHqFNfiLQHhZi[_D3std9exception__T12errnoEnforceTiVAyaa83_2f6e69782f73746f72652f783977667070677a30377a676b733979666e37633936393635776d726c3078642d646d644275696c642d322e3037392e312f696e636c7564652f64322f7374642f737464696f2e64Vmi2877ZQ
qFNfiLQHhZi]+0x5b): undefined reference to
`_D3std9exception14ErrnoException6__ctorMFNeAyaQdmZCQBxQBwQBp'
hello.d:(.text._D3std9exception__T12errnoEnforceTiVAyaa83_2f6e69782f73746f72652f783977667070677a30377a676b733979666e37633936393635776d726c3078642d646d644275696c642d322e3037392e312f696e636c7564652f64322f7374642f737464696f2e64Vmi2877ZQHqFNfiLQHhZi[_D3std9exception__T12errnoEnforceTiVAyaa83_2f6e69782f73746f72652f783977667070677a30377a676b733979666e37633936393635776d726c3078642d646d644275696c642d322e3037392e312f696e636c7564652f64322f7374642f737464696f2e64Vmi2877ZQ
qFNfiLQHhZi]+0x63): undefined reference to `_d_throwdwarf'
hello.o: In function 
`_D3std5stdio4File17LockingTextWriter__T3putTyaZQiMFNfyaZv':

Thanks in advance
Thomas

Johannes Loher <johannes.loher fg4f.de> writes:

Am 04.05.2018 um 22:27 schrieb Thomas Mader:
 [...]

Here is a demangled version of what you posted:

dmd hello.d
hello.o: In function ` safe void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])':
hello.d:(.text. safe void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])[ safe
void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])]+0x46):
undefined reference to ` safe std.stdio.File.LockingTextWriter
std.stdio.File.lockingTextWriter()'
hello.d:(.text. safe void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])[ safe
void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])]+0x57):
undefined reference to ` safe void std.stdio.File.__dtor()'
hello.d:(.text. safe void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])[ safe
void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])]+0xa4):
undefined reference to ` trusted void
std.stdio.File.LockingTextWriter.__aggrDtor()'
hello.o:(.data.DW.ref.__dmd_personality_v0+0x0): undefined reference to
`__dmd_personality_v0'
hello.o: In function ` safe int std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/include/d2/std/stdio.d",
2877uL).errnoEnforce(int, lazy immutable(char)[])':
hello.d:(.text. safe int std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/include/d2/std/stdio.d",
2877uL).errnoEnforce(int, lazy immutable(char)[])[ safe int
std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/include/d2/std/stdio.d",
2877uL).errnoEnforce(int, lazy immutable(char)[])]+0x20): undefined
reference to `std.exception.ErrnoException.__Class'
hello.d:(.text. safe int std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/include/d2/std/stdio.d",
2877uL).errnoEnforce(int, lazy immutable(char)[])[ safe int
std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/include/d2/std/stdio.d",
2877uL).errnoEnforce(int, lazy immutable(char)[])]+0x5b): undefined
reference to ` trusted std.exception.ErrnoException
std.exception.ErrnoException.__ctor(immutable(char)[],
immutable(char)[], ulong)'
hello.d:(.text. safe int std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/include/d2/std/stdio.d",
2877uL).errnoEnforce(int, lazy immutable(char)[])[ safe int
std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/include/d2/std/stdio.d",
2877uL).errnoEnforce(int, lazy immutable(char)[])]+0x63): undefined
reference to `_d_throwdwarf'
hello.o: In function ` safe void
std.stdio.File.LockingTextWriter.put!(immutable(char)).put(immutable(char))':

Unfortunately, I don't have any clue what might be going on...

Thomas Mader <thomas.mader gmail.com> writes:

On Saturday, 5 May 2018 at 00:07:01 UTC, Johannes Loher wrote:
 Am 04.05.2018 um 22:27 schrieb Thomas Mader:
 [...]

 Here is a demangled version of what you posted:

Here comes the entire demangled output of the Hello World build.
Maybe it has something to do with ModuleInfo?
I also need to skip through changes which might have introduced 
this problem.

hello.o: In function ` safe void 
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])':
hello.d:(.text. safe void 
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])[ safe void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])]+0x46):
undefined reference to ` safe std.stdio.File.LockingTextWriter
std.stdio.File.lockingTextWriter()'
hello.d:(.text. safe void 
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])[ safe void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])]+0x57):
undefined reference to ` safe void std.stdio.File.__dtor()'
hello.d:(.text. safe void 
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])[ safe void
std.stdio.writeln!(immutable(char)[]).writeln(immutable(char)[])]+0xa4):
undefined reference to ` trusted void
std.stdio.File.LockingTextWriter.__aggrDtor()'
hello.o:(.data.DW.ref.__dmd_personality_v0+0x0): undefined 
reference to `__dmd_personality_v0'
hello.o: In function ` safe int std.exception.errnoEnforce!(int, 
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/incl
de/d2/std/stdio.d", 2877uL).errnoEnforce(int, lazy immutable(char)[])':
hello.d:(.text. safe int std.exception.errnoEnforce!(int, 
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/incl
de/d2/std/stdio.d", 2877uL).errnoEnforce(int, lazy immutable(char)[])[ safe int
std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/incl
de/d2/std/stdio.d", 2877uL).errnoEnforce(int, lazy immutable(char)[])]+0x20):
undefined reference to `std.exception.ErrnoException.__Class'
hello.d:(.text. safe int std.exception.errnoEnforce!(int, 
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/incl
de/d2/std/stdio.d", 2877uL).errnoEnforce(int, lazy immutable(char)[])[ safe int
std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/incl
de/d2/std/stdio.d", 2877uL).errnoEnforce(int, lazy immutable(char)[])]+0x5b):
undefined reference to ` trusted std.exception.ErrnoException
std.exception.ErrnoException.__ctor(immutable(char)[], immutable(char)[],
ulong)'
hello.d:(.text. safe int std.exception.errnoEnforce!(int, 
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/incl
de/d2/std/stdio.d", 2877uL).errnoEnforce(int, lazy immutable(char)[])[ safe int
std.exception.errnoEnforce!(int,
"/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/incl
de/d2/std/stdio.d", 2877uL).errnoEnforce(int, lazy immutable(char)[])]+0x63):
undefined reference to `_d_throwdwarf'
hello.o: In function ` safe void 
std.stdio.File.LockingTextWriter.put!(immutable(char)).put(immutable(char))':
hello.d:(.text. safe void 
std.stdio.File.LockingTextWriter.put!(immutable(char)).put(im
utable(char))[ safe void
std.stdio.File.LockingTextWriter.put!(immutable(char)).put(immu
able(char))]+0x1b): undefined reference to ` property  trusted
core.stdc.stdio._IO_FILE* std.stdio.File.LockingTextWriter.handle_()'
hello.d:(.text. safe void 
std.stdio.File.LockingTextWriter.put!(immutable(char)).put(im
utable(char))[ safe void
std.stdio.File.LockingTextWriter.put!(immutable(char)).put(immu
able(char))]+0x37): undefined reference to ` property  trusted
core.stdc.stdio._IO_FILE* std.stdio.File.LockingTextWriter.handle_()'
hello.o: In function ` safe void 
std.stdio.File.LockingTextWriter.put!(char).put(char)':
hello.d:(.text. safe void 
std.stdio.File.LockingTextWriter.put!(char).put(char)[ safe void 
std.stdio.File.LockingTextWriter.put!(char).put(char)]+0x1b): 
undefined reference to ` property  trusted 
core.stdc.stdio._IO_FILE* 
std.stdio.File.LockingTextWriter.handle_()'
hello.d:(.text. safe void 
std.stdio.File.LockingTextWriter.put!(char).put(char)[ safe void 
std.stdio.File.LockingTextWriter.put!(char).put(char)]+0x37): 
undefined reference to ` property  trusted 
core.stdc.stdio._IO_FILE* 
std.stdio.File.LockingTextWriter.handle_()'
hello.o: In function `main':
hello.d:(.text.main[main]+0xc): undefined reference to 
`_d_run_main'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(lifetime_68e
482.o):(.data+0x0): undefined reference to `rt.lifetime.__ModuleInfo'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(
ifetime_68e_482.o): In function `_d_newclass':
(.text._d_newclass[_d_newclass]+0x35): undefined reference to 
`pure nothrow  nogc core.exception.OutOfMemoryError 
core.exception.staticError!(core.exception.OutOfMemoryError).staticError()'
(.text._d_newclass[_d_newclass]+0x3d): undefined reference to 
`_d_throwdwarf'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(sections_el
_shared_729_640.o): In function `_d_dso_registry':
(.text._d_dso_registry[_d_dso_registry]+0xd1): undefined 
reference to `nothrow  nogc bool 
rt.sections_elf_shared.findDSOInfoForAddr(const(void*), 
core.sys.linux.link.dl_phdr_info*)'
(.text._d_dso_registry[_d_dso_registry]+0x404): undefined 
reference to `void 
rt.minfo.ModuleGroup.sortCtors(immutable(char)[])'
(.text._d_dso_registry[_d_dso_registry]+0x40c): undefined 
reference to `void rt.minfo.ModuleGroup.runCtors()'
(.text._d_dso_registry[_d_dso_registry]+0x414): undefined 
reference to `void rt.minfo.ModuleGroup.runTlsCtors()'
(.text._d_dso_registry[_d_dso_registry]+0x43b): undefined 
reference to `void rt.minfo.ModuleGroup.runTlsDtors()'
(.text._d_dso_registry[_d_dso_registry]+0x443): undefined 
reference to `void rt.minfo.ModuleGroup.runDtors()'
(.text._d_dso_registry[_d_dso_registry]+0x590): undefined 
reference to `pure nothrow  nogc core.exception.OutOfMemoryError 
core.exception.staticError!(core.exception.OutOfMemoryError, 
bool).staticError(bool)'
(.text._d_dso_registry[_d_dso_registry]+0x598): undefined 
reference to `_d_throwdwarf'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(sections_el
_shared_731_4eb.o): In function `nothrow  nogc void
rt.sections_elf_shared.scanSegments(ref
const(core.sys.linux.link.dl_phdr_info), rt.sections_elf_shared.DSO*)':
(.text.nothrow  nogc void rt.sections_elf_shared.scanSegments(ref 
const(core.sys.linux.link.dl_phdr_info), 
rt.sections_elf_shared.DSO*)[nothrow  nogc void 
rt.sections_elf_shared.scanSegments(ref 
const(core.sys.linux.link.dl_phdr_info), 
rt.sections_elf_shared.DSO*)]+0x1a8): undefined reference to 
`pure nothrow  nogc core.exception.OutOfMemoryError 
core.exception.staticError!(core.exception.OutOfMemoryError, 
bool).staticError(bool)'
(.text.nothrow  nogc void rt.sections_elf_shared.scanSegments(ref 
const(core.sys.linux.link.dl_phdr_info), 
rt.sections_elf_shared.DSO*)[nothrow  nogc void 
rt.sections_elf_shared.scanSegments(ref 
const(core.sys.linux.link.dl_phdr_info), 
rt.sections_elf_shared.DSO*)]+0x1b0): undefined reference to 
`_d_throwdwarf'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.
(common_7ee_35a.o): In function `nothrow  nogc void*
rt.util.container.common.xrealloc(void*, ulong)':
(.text.nothrow  nogc void* 
rt.util.container.common.xrealloc(void*, ulong)[nothrow  nogc 
void* rt.util.container.common.xrealloc(void*, ulong)]+0x51): 
undefined reference to `pure nothrow  nogc 
core.exception.OutOfMemoryError 
core.exception.staticError!(core.exception.OutOfMemoryError, 
bool).staticError(bool)'
(.text.nothrow  nogc void* 
rt.util.container.common.xrealloc(void*, ulong)[nothrow  nogc 
void* rt.util.container.common.xrealloc(void*, ulong)]+0x59): 
undefined reference to `_d_throwdwarf'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.
(stdio_19cc_58e.o): In function ` property  trusted std.stdio.File
std.stdio.trustedStdout()':
(.text. property  trusted std.stdio.File 
std.stdio.trustedStdout()[ property  trusted std.stdio.File 
std.stdio.trustedStdout()]+0x23): undefined reference to `nothrow 
 safe void std.stdio.File.__postblit()'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.
(config_61a_69a.o): In function `nothrow  nogc immutable(char)[]
rt.config.rt_cmdlineOption(immutable(char)[], scope immutable(char)[]
delegate(immutable(char)[]) nothrow  nogc)':
(.text.nothrow  nogc immutable(char)[] 
rt.config.rt_cmdlineOption(immutable(char)[], scope 
immutable(char)[] delegate(immutable(char)[]) nothrow 
 nogc)[nothrow  nogc immutable(char)[] 
rt.config.rt_cmdlineOption(immutable(char)[], scope 
immutable(char)[] delegate(immutable(char)[]) nothrow 
 nogc)]+0x9b): undefined reference to `pure nothrow  nogc  safe 
bool object.__equals!(immutable(char), 
immutable(char)).__equals(immutable(char)[], immutable(char)[])'
(.text.nothrow  nogc immutable(char)[] 
rt.config.rt_cmdlineOption(immutable(char)[], scope 
immutable(char)[] delegate(immutable(char)[]) nothrow 
 nogc)[nothrow  nogc immutable(char)[] 
rt.config.rt_cmdlineOption(immutable(char)[], scope 
immutable(char)[] delegate(immutable(char)[]) nothrow 
 nogc)]+0xc3): undefined reference to `pure nothrow  nogc  safe 
bool object.__equals!(immutable(char), 
immutable(char)).__equals(immutable(char)[], immutable(char)[])'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.
(config_61c_56c.o): In function `nothrow  nogc immutable(char)[]
rt.config.rt_linkOption(immutable(char)[], scope immutable(char)[]
delegate(immutable(char)[]) nothrow  nogc)':
(.text.nothrow  nogc immutable(char)[] 
rt.config.rt_linkOption(immutable(char)[], scope 
immutable(char)[] delegate(immutable(char)[]) nothrow 
 nogc)[nothrow  nogc immutable(char)[] 
rt.config.rt_linkOption(immutable(char)[], scope 
immutable(char)[] delegate(immutable(char)[]) nothrow 
 nogc)]+0x80): undefined reference to `pure nothrow  nogc  safe 
bool object.__equals!(immutable(char), 
immutable(char)).__equals(immutable(char)[], immutable(char)[])'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(p
oxy.o):(.data+0x0): undefined reference to `gc.impl.proto.gc.ProtoGC.__vtbl'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(pr
xy.o):(.data+0x10): undefined reference to `gc.impl.proto.gc.ProtoGC.__Class'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(gc.o):
.data.rel.ro+0x18): undefined reference to `core.thread.__ModuleInfo'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(gc.o):
.data.rel.ro+0x20): undefined reference to `core.time.__ModuleInfo'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(gc.o):
.data.rel.ro+0x40): undefined reference to
`gc.impl.conservative.gc.ConservativeGC.__Class'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(bitop.o):
.data.rel.ro+0x10): undefined reference to `core.cpuid.__ModuleInfo'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(bitop.o):
.data.rel.ro+0x18): undefined reference to `core.cpuid.__ModuleInfo'
/nix/store/x9wfppgz07zgks9yfn7c96965wmrl0xd-dmdBuild-2.079.1/lib/libphobos2.a(spinlock.o):
.data.rel.ro+0x10): undefined reference to `core.thread.__ModuleInfo'
collect2: error: ld returned 1 exit status
Error: linker exited with status 1

Thomas Mader <thomas.mader gmail.com> writes:

On Saturday, 5 May 2018 at 11:22:06 UTC, Thomas Mader wrote:
 I also need to skip through changes which might have introduced 
 this problem.

Has anyone tried to compile with glibc 2.27?
They switched to 2.27 on Master branch and I suspect that the 
error has to do with that.

Seb <seb wilzba.ch> writes:

On Tuesday, 8 May 2018 at 14:45:53 UTC, Thomas Mader wrote:
 On Saturday, 5 May 2018 at 11:22:06 UTC, Thomas Mader wrote:
 I also need to skip through changes which might have 
 introduced this problem.

 Has anyone tried to compile with glibc 2.27?
 They switched to 2.27 on Master branch and I suspect that the 
 error has to do with that.

Yep, using 2.27-3 on ArchLinux here and everything builds fine.

- Maybe somewhere there's still an old cache?
- Maybe dmd, druntime or phobos aren't checked out at the same 
version?

Thomas Mader <thomas.mader gmail.com> writes:

On Friday, 4 May 2018 at 20:27:33 UTC, Thomas Mader wrote:
 The dmd package on NixOS doesn't work anymore in their master 
 branch.

Since dmd still works correctly on the stable branch I tried to 
examine the differences of libphobos2.a.
I switched back to version 2.079.0 on master to have the same 
version as on stable.

First I diffed the outputs of 'ar -t libphobos2.a' but there 
weren't any differences.

But executing 'nm libphobos2.a' results in many errors like:

nm: 
/home/thomad/devel/nixpkgs/result/lib/libphobos2.a(object_1_257.o): no group
info for section .text._D6object6Object5opCmpMFCQqZi
nm: 
/home/thomad/devel/nixpkgs/result/lib/libphobos2.a(object_1_257.o): no group
info for section .text._D6object6Object5opCmpMFCQqZi
nm: object_1_257.o: Bad value
nm: 
/home/thomad/devel/nixpkgs/result/lib/libphobos2.a(object_5_391.o): no group
info for section .text._D6object9Interface9__xtoHashFNbNeKxSQBjQBfZm
nm: 
/home/thomad/devel/nixpkgs/result/lib/libphobos2.a(object_5_391.o): no group
info for section .text._D6object9Interface9__xtoHashFNbNeKxSQBjQBfZm
nm: object_5_391.o: Bad value

nm on the static lib of the stable branch has just one error:

nm: threadasm.o: no symbols

Looking into the output of both nm calls shows that a lot of 
sections are missing in the static phobos lib on the master 
branch.
The first being object_1_257.o.

Now I wonder how something like that is possible.

Thomas Mader <thomas.mader gmail.com> writes:

On Wednesday, 9 May 2018 at 19:58:48 UTC, Thomas Mader wrote:
 Now I wonder how something like that is possible.

My suspicion about the switch to glibc 2.27 being the problem was 
wrong.
I did a very timeconsuming bisection and found the problem commit 
to be the one which bumped binutils to 2.30.

Thomas Mader <thomas.mader gmail.com> writes:

On Friday, 11 May 2018 at 04:27:20 UTC, Thomas Mader wrote:
 My suspicion about the switch to glibc 2.27 being the problem 
 was wrong.
 I did a very timeconsuming bisection and found the problem 
 commit to be the one which bumped binutils to 2.30.

Can somebody help me to answer the question from 
https://sourceware.org/bugzilla/show_bug.cgi?id=23199#c4 please.
The object is created by the dmd backend but where in the code is 
binutils used?

Mike Franklin <slavo5150 yahoo.com> writes:

On Friday, 18 May 2018 at 10:28:37 UTC, Thomas Mader wrote:
 On Friday, 11 May 2018 at 04:27:20 UTC, Thomas Mader wrote:
 My suspicion about the switch to glibc 2.27 being the problem 
 was wrong.
 I did a very timeconsuming bisection and found the problem 
 commit to be the one which bumped binutils to 2.30.

 Can somebody help me to answer the question from 
 https://sourceware.org/bugzilla/show_bug.cgi?id=23199#c4 please.
 The object is created by the dmd backend but where in the code 
 is binutils used?

I'm not sure I understand.  Does binutils need to be used to 
generated an object file?  My understanding is the DMD creates 
the object file without the help of binutils.  The only time 
binutils is really called is when it calls `gcc` to do  the link 
at 
https://github.com/dlang/dmd/blob/b61d1c8989bed54489c9c7eb5acc2e1f4312b8c6/src/dmd/link.d#L157

Mike

Johannes Pfau <nospam example.com> writes:

On Friday, 18 May 2018 at 11:28:30 UTC, Mike Franklin wrote:
 On Friday, 18 May 2018 at 10:28:37 UTC, Thomas Mader wrote:
 On Friday, 11 May 2018 at 04:27:20 UTC, Thomas Mader wrote:
 My suspicion about the switch to glibc 2.27 being the problem 
 was wrong.
 I did a very timeconsuming bisection and found the problem 
 commit to be the one which bumped binutils to 2.30.

 Can somebody help me to answer the question from 
 https://sourceware.org/bugzilla/show_bug.cgi?id=23199#c4 
 please.
 The object is created by the dmd backend but where in the code 
 is binutils used?

 I'm not sure I understand.  Does binutils need to be used to 
 generated an object file?  My understanding is the DMD creates 
 the object file without the help of binutils.

As far as I know, that's correct. GCC-based compilers emit ASM 
code only and leave assembling of the objects files to the 
'binutils as' assembler. That's probably the reason they assumed 
it's a binutils bug. For DMD, binutils is not involved when 
creating object files. So this is likely a DMD bug.

-- Johannes

Thomas Mader <thomas.mader gmail.com> writes:

On Friday, 18 May 2018 at 13:15:35 UTC, Johannes Pfau wrote:
 As far as I know, that's correct. GCC-based compilers emit ASM 
 code only and leave assembling of the objects files to the 
 'binutils as' assembler. That's probably the reason they 
 assumed it's a binutils bug. For DMD, binutils is not involved 
 when creating object files. So this is likely a DMD bug.

That would be my understanding as well.
Probably the problem exists with binutils 2.30 only because it 
changed the format somehow and the linking of the dmd created 
object files doesn't work anymore because of this. The object 
file format created from dmd is not compatible with binutils 
anymore.

Thomas Mader <thomas.mader gmail.com> writes:

On Friday, 4 May 2018 at 20:27:33 UTC, Thomas Mader wrote:
 The dmd package on NixOS doesn't work anymore in their master 
 branch.
 They must have changed something in the C environment or 
 something and I don't have a clue what's going on.

I found the problem.
strip in binutils 2.30 is broken. Nix is stripping libs and 
binaries on installation.
The problem will be further analyzed in 
https://sourceware.org/bugzilla/show_bug.cgi?id=23199