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digitalmars.D - Link errors when compiling shared lib on windows

reply Daniel Fitzpatrick <doubleagent03 gmail.com> writes:
I am following this short tutorial on compiling a shared lib:

https://wiki.dlang.org/Call_D_from_Ruby_using_FFI

Because it's on Windows I am using these compiler options:

-shared -m64 -defaultlib=libphobos2.so i.d


However, I am receiving rather a lot of linker errors.  Not sure 
what else to provide the compiler.

i.obj : error LNK2019: unresolved external symbol 
_D3std5stdio4File17LockingTextWriter6__dtorMFNeZv referenced in 
function _D3std5stdio16__T7writelnTAyaZ7writelnFNfAyaZv
i.obj : error LNK2019: unresolved external symbol 
_D3std9exception14ErrnoException6__ctorMFNeAyaAyamZC3std9excep
ion14ErrnoException referenced in function
_D3std9exception135__T12errnoEnforceTiVAyaa50_633a5c445c646d64325c77696e646f77735c62696e5c2e2e5c2e2e5c7372635c70686f626f735c7374645c737464696f2e64Vmi2776Z12errnoEnforceFNfiLAyaZi
i.obj : error LNK2019: unresolved external symbol 
_D3std3utf12UTFException7__ClassZ referenced in function 
_D3std3utf98__T13_utfExceptionVE3std8typecons55__T4FlagVAyaa19_7573655265706c6163656d656e744463686172Z4Flagi0Z13_utfExceptionFNaNfAyawZw
i.obj : error LNK2019: unresolved external symbol _d_assert_msg 
referenced in function 
_D3std5stdio4File17LockingTextWriter12__T3putTAyaZ3putMFNfAyaZv
i.obj : error LNK2019: unresolved external symbol 
_D3std9exception14ErrnoException7__ClassZ referenced in function 
_D3std9exception135__T12errnoEnforceTiVAyaa50_633a5c445c646d64325c77696e646f77735c62696e5c2e2e5c2e2e5c7372635c70686f626f735c7374645c737464696f2e64Vmi2776Z12errnoEnforceFNfiLAyaZi
i.obj : error LNK2019: unresolved external symbol _fputc_nolock 
referenced in function 
_D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZ12trustedFPUTCFNbNiNeiPS4core4stdc5stdio6_iobufZi
i.obj : error LNK2019: unresolved external symbol fwrite 
referenced in function 
_D3std5stdio21__T13trustedFwriteTaZ13trustedFwriteFNbNiNePOS4core4stdc5stdio6_iobufxAaZm
i.obj : error LNK2019: unresolved external symbol 
_D3std5stdio4File6__dtorMFNfZv referenced in function 
_D3std5stdio16__T7writelnTAyaZ7writelnFNfAyaZv
i.obj : error LNK2019: unresolved external symbol _d_throwc 
referenced in function 
_D3std9exception135__T12errnoEnforceTiVAyaa50_633a5c445c646d64325c77696e646f77735c62696e5c2e2e5c2e2e5c7372635c70686f626f735c7374645c737464696f2e64Vmi2776Z12errnoEnforceFNfiLAyaZi
i.obj : error LNK2019: unresolved external symbol 
_D3std5stdio4File17LockingTextWriter7handle_MFNdNeZPS4core4stdc5stdio6_iobuf
referenced in function
_D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZv
i.obj : error LNK2019: unresolved external symbol _d_newclass 
referenced in function 
_D3std9exception135__T12errnoEnforceTiVAyaa50_633a5c445c646d64325c77696e646f77735c62696e5c2e2e5c2e2e5c7372635c70686f626f735c7374645c737464696f2e64Vmi2776Z12errnoEnforceFNfiLAyaZi
i.obj : error LNK2019: unresolved external symbol _d_assertp 
referenced in function 
_D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZv
i.obj : error LNK2019: unresolved external symbol _d_arrayboundsp 
referenced in function 
_D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZv
i.obj : error LNK2019: unresolved external symbol 
_D3std5stdio13trustedStdoutFNdNeZS3std5stdio4File referenced in 
function _D3std5stdio16__T7writelnTAyaZ7writelnFNfAyaZv
i.obj : error LNK2019: unresolved external symbol 
_D3std5stdio4File17lockingTextWriterMFNfZS3std5stdio4File17LockingTextWriter
referenced in function _D3std5stdio16__T7writelnTAyaZ7writelnFNfAyaZv
i.obj : error LNK2019: unresolved external symbol 
_D3std3utf12isValidDcharFNaNbNiNfwZb referenced in function 
_D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZv
i.obj : error LNK2019: unresolved external symbol _aApplycd1 
referenced in function 
_D3std5stdio4File17LockingTextWriter12__T3putTAyaZ3putMFNfAyaZv
i.obj : error LNK2019: unresolved external symbol 
_D3std3utf12UTFException6__ctorMFNaNbNiNfAyaAyamC6object9ThrowableZC3s
d3utf12UTFException referenced in function
_D3std3utf98__T13_utfExceptionVE3std8typecons55__T4FlagVAyaa19_7573655265706c6163656d656e744463686172Z4Flagi0Z13_utfExceptionFNaNfAyawZw
i.obj : error LNK2019: unresolved external symbol _fputwc_nolock 
referenced in function 
_D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZ13trustedFPUTWCFNbNiNeiPS4core4stdc5stdio6_iobufZi
LINK : error LNK2001: unresolved external symbol 
_DllMainCRTStartup
i.dll : fatal error LNK1120: 20 unresolved externals
Error: linker exited with status 1120
Nov 01
parent reply kinke <noone nowhere.com> writes:
On Wednesday, 1 November 2017 at 15:15:27 UTC, Daniel Fitzpatrick 
wrote:
 I am following this short tutorial on compiling a shared lib:

 https://wiki.dlang.org/Call_D_from_Ruby_using_FFI

 Because it's on Windows I am using these compiler options:

 -shared -m64 -defaultlib=libphobos2.so i.d


 However, I am receiving rather a lot of linker errors.  Not 
 sure what else to provide the compiler.
Try less, especially no `-defaultlib` overridden with a Linux shared-object. You'll have to edit the hardcoded `./i.so` in the example as well obviously.
Nov 01
parent reply Daniel Fitzpatrick <doubleagent03 gmail.com> writes:
On Wednesday, 1 November 2017 at 15:52:17 UTC, kinke wrote:
 On Wednesday, 1 November 2017 at 15:15:27 UTC, Daniel 
 Fitzpatrick wrote:
 I am following this short tutorial on compiling a shared lib:

 https://wiki.dlang.org/Call_D_from_Ruby_using_FFI

 Because it's on Windows I am using these compiler options:

 -shared -m64 -defaultlib=libphobos2.so i.d


 However, I am receiving rather a lot of linker errors.  Not 
 sure what else to provide the compiler.
Try less, especially no `-defaultlib` overridden with a Linux shared-object. You'll have to edit the hardcoded `./i.so` in the example as well obviously.
Oops, missed that! What i've tried is -shared -m64 i.d -shared -m64 -defaultlib=libphobos2.dll i.d Still seeing a lot of linker errors. Errors for the former: i.obj : error LNK2019: unresolved external symbol _D3std5stdio13trustedStdoutFNdNeZS3std5stdio4File referenced in function _D3std5stdio16__T7writelnTAyaZ7writelnFNfAyaZv i.obj : error LNK2019: unresolved external symbol _D3std5stdio4File17lockingTextWriterMFNfZS3std5stdio4File17LockingTextWriter referenced in function _D3std5stdio16__T7writelnTAyaZ7writelnFNfAyaZv i.obj : error LNK2019: unresolved external symbol _D3std3utf12isValidDcharFNaNbNiNfwZb referenced in function _D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZv i.obj : error LNK2019: unresolved external symbol _d_assert_msg referenced in function _D3std5stdio4File17LockingTextWriter12__T3putTAyaZ3putMFNfAyaZv i.obj : error LNK2019: unresolved external symbol _aApplycd1 referenced in function _D3std5stdio4File17LockingTextWriter12__T3putTAyaZ3putMFNfAyaZv i.obj : error LNK2019: unresolved external symbol _D3std3utf12UTFException6__ctorMFNaNbNiNfAyaAyamC6object9ThrowableZC3s d3utf12UTFException referenced in function _D3std3utf98__T13_utfExceptionVE3std8typecons55__T4FlagVAyaa19_7573655265706c6163656d656e744463686172Z4Flagi0Z13_utfExceptionFNaNfAyawZw i.obj : error LNK2019: unresolved external symbol _fputwc_nolock referenced in function _D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZ13trustedFPUTWCFNbNiNeiPS4core4stdc5stdio6_iobufZi i.obj : error LNK2019: unresolved external symbol _d_throwc referenced in function _D3std9exception135__T12errnoEnforceTiVAyaa50_633a5c445c646d64325c77696e646f77735c62696e5c2e2e5c2e2e5c7372635c70686f626f735c7374645c737464696f2e64Vmi2776Z12errnoEnforceFNfiLAyaZi i.obj : error LNK2019: unresolved external symbol _D3std5stdio4File17LockingTextWriter6__dtorMFNeZv referenced in function _D3std5stdio16__T7writelnTAyaZ7writelnFNfAyaZv i.obj : error LNK2019: unresolved external symbol _D3std9exception14ErrnoException6__ctorMFNeAyaAyamZC3std9excep ion14ErrnoException referenced in function _D3std9exception135__T12errnoEnforceTiVAyaa50_633a5c445c646d64325c77696e646f77735c62696e5c2e2e5c2e2e5c7372635c70686f626f735c7374645c737464696f2e64Vmi2776Z12errnoEnforceFNfiLAyaZi i.obj : error LNK2019: unresolved external symbol _D3std3utf12UTFException7__ClassZ referenced in function _D3std3utf98__T13_utfExceptionVE3std8typecons55__T4FlagVAyaa19_7573655265706c6163656d656e744463686172Z4Flagi0Z13_utfExceptionFNaNfAyawZw i.obj : error LNK2019: unresolved external symbol _d_newclass referenced in function _D3std9exception135__T12errnoEnforceTiVAyaa50_633a5c445c646d64325c77696e646f77735c62696e5c2e2e5c2e2e5c7372635c70686f626f735c7374645c737464696f2e64Vmi2776Z12errnoEnforceFNfiLAyaZi i.obj : error LNK2019: unresolved external symbol _D3std9exception14ErrnoException7__ClassZ referenced in function _D3std9exception135__T12errnoEnforceTiVAyaa50_633a5c445c646d64325c77696e646f77735c62696e5c2e2e5c2e2e5c7372635c70686f626f735c7374645c737464696f2e64Vmi2776Z12errnoEnforceFNfiLAyaZi i.obj : error LNK2019: unresolved external symbol _fputc_nolock referenced in function _D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZ12trustedFPUTCFNbNiNeiPS4core4stdc5stdio6_iobufZi i.obj : error LNK2019: unresolved external symbol fwrite referenced in function _D3std5stdio21__T13trustedFwriteTaZ13trustedFwriteFNbNiNePOS4core4stdc5stdio6_iobufxAaZm i.obj : error LNK2019: unresolved external symbol _D3std5stdio4File6__dtorMFNfZv referenced in function _D3std5stdio16__T7writelnTAyaZ7writelnFNfAyaZv i.obj : error LNK2019: unresolved external symbol _d_assertp referenced in function _D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZv i.obj : error LNK2019: unresolved external symbol _D3std5stdio4File17LockingTextWriter7handle_MFNdNeZPS4core4stdc5stdio6_iobuf referenced in function _D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZv i.obj : error LNK2019: unresolved external symbol _d_arrayboundsp referenced in function _D3std5stdio4File17LockingTextWriter10__T3putTwZ3putMFNfwZv LINK : error LNK2001: unresolved external symbol _DllMainCRTStartup i.dll : fatal error LNK1120: 20 unresolved externals Error: linker exited with status 1120
Nov 01
next sibling parent bachmeier <no spam.net> writes:
On Wednesday, 1 November 2017 at 16:02:37 UTC, Daniel Fitzpatrick 
wrote:

 Oops, missed that!  What i've tried is

 -shared -m64 i.d
 -shared -m64 -defaultlib=libphobos2.dll i.d

 Still seeing a lot of linker errors.  Errors for the former:
Are you using LDC? That's the only way I've been able to create a working DLL. I've never had to add the -defaultlib option with LDC on Windows. Here's a post describing all the steps I took to make a DLL that can be called from R: https://lancebachmeier.com/computing/d-from-r-windows.html The references to R are not important. Should be straightforward to adopt for your use case.
Nov 01
prev sibling parent Jerry <hurricane hereiam.com> writes:
On Wednesday, 1 November 2017 at 16:02:37 UTC, Daniel Fitzpatrick 
wrote:
 On Wednesday, 1 November 2017 at 15:52:17 UTC, kinke wrote:
 On Wednesday, 1 November 2017 at 15:15:27 UTC, Daniel 
 Fitzpatrick wrote:
 I am following this short tutorial on compiling a shared lib:

 https://wiki.dlang.org/Call_D_from_Ruby_using_FFI

 Because it's on Windows I am using these compiler options:

 -shared -m64 -defaultlib=libphobos2.so i.d


 However, I am receiving rather a lot of linker errors.  Not 
 sure what else to provide the compiler.
Try less, especially no `-defaultlib` overridden with a Linux shared-object. You'll have to edit the hardcoded `./i.so` in the example as well obviously.
Oops, missed that! What i've tried is -shared -m64 i.d -shared -m64 -defaultlib=libphobos2.dll i.d Still seeing a lot of linker errors. Errors for the former:
There's no shared library of Phobos for Windows with either DMD or LDC. You have to statically link to it.
Nov 01