it tried to also allow those flags by setting the env variablee ldflag allow but it seems to have no effect.
Le lundi 24 juin 2019 21:15:34 UTC+2, nobody nobodye a écrit : > > it seems that flags --no-undefined --enable-runtime-pseudo-reloc are > invalid flags :( > > /* > #cgo LDFLAGS: --no-undefined --enable-runtime-pseudo-reloc > #include <stdlib.h> > #include <stdio.h> > #include <string.h> > */ > import "C" > > > > Le lundi 24 juin 2019 18:58:22 UTC+2, Alexander Kapshuk a écrit : >> >> The part of interest is the functions you want exported from the Go >> program: >> >> 1 0 000813C0 RVExtension >> 2 1 00081360 RVExtensionArgs >> 3 2 00081310 RVExtensionVersion >> >> This article, http://www.mingw.org/wiki/sampledll, in section >> 'Building and using a DLL without the dllexport/dllimport attibutes' >> suggests the following approach: >> If you pass the --no-undefined and --enable-runtime-pseudo-reloc >> options to the linker, you don't have to add dllimport or dllexport >> attributes to the source code that the DLL is made with ; all >> functions are imported/exported automatically by default, just like in >> unices. >> >> Can you please try putting the following cgo directive for the linker >> in your Go file: >> // #cgo LDFLAGS: --no-undefined --enable-runtime-pseudo-reloc >> >> If you then rebuild your dll and see if the definition of your >> exported functions changes to _fn_name@arg_size in the output of >> dumpbin. >> You can use 'findstr' to filter the output of dumpbin based on a >> search pattern like so: >> dumpbin.exe /EXPORTS slib.dll | findstr "RVExtension" >> >> On Mon, Jun 24, 2019 at 7:35 PM nicolas_boiteux via golang-nuts >> <golan...@googlegroups.com> wrote: >> > >> > Hello Alexander >> > >> > you can find the dump at this place: >> > https://pastebin.com/cg33nktu >> > >> > Le lundi 24 juin 2019 13:00:49 UTC+2, Alexander Kapshuk a écrit : >> >> >> >> Or was this it? >> >> >> >> #ifdef __cplusplus >> >> extern "C" { >> >> #endif >> >> extern void _RVExtensionVersion(char* p0, size_t p1); >> >> extern void _RVExtensionArgs(char* p0, size_t p1, char* p2, char** p3, >> int p4); >> >> extern void _RVExtension(char* p0, size_t p1, char* p2); >> >> #ifdef __cplusplus >> >> } >> >> #endif >> >> >> >> The 32-bit exports listed here, >> >> https://community.bistudio.com/wiki/Extensions, are most likely what >> >> is listed in the module-definition file ending in .def. >> >> Can you please try using the following declaration: >> >> //export RVExtension >> >> func RVExtension(output *C.char, outputsize C.size_t, input *C.char) >> {...} >> >> >> >> Compile your dll and post the output of dumpbin.exe /EXPORTS >> >> /path/to/slib.dll showing the listing of your exported symbols? >> >> >> >> On Mon, Jun 24, 2019 at 11:41 AM Alexander Kapshuk >> >> <alexande...@gmail.com> wrote: >> >> > >> >> > If I understand it correctly, cgo should have generated a >> >> > _cgo_export.h header with a declaration for your exported function. >> >> > Can you please post the generated declaration? >> >> > >> >> > On Mon, Jun 24, 2019 at 12:47 AM <ono...@gmail.com> wrote: >> >> > > >> >> > > We are trying to make the x32 version of the extension, as shown >> in the link below. >> >> > > https://community.bistudio.com/wiki/Extensions#C.2FC.2B.2B >> >> > > >> >> > > How we see, for x64 we must use entry points >> >> > > >> >> > > RVExtension >> >> > > RVExtensionArgs >> >> > > RVExtensionVersion >> >> > > >> >> > > >> >> > > but for x32 >> >> > > >> >> > > _RVExtension@12 >> >> > > _RVExtensionArgs@20 >> >> > > _RVExtensionVersion@8 >> >> > > >> >> > > >> >> > > It is very hard for me to explain to you exactly what we need, >> because I am new to this language, and C doesn’t know at all. I really hope >> that you understand what I mean. >> >> > > >> >> > > воскресенье, 23 июня 2019 г., 22:20:53 UTC+3 пользователь Kurtis >> Rader написал: >> >> > >> >> >> > >> On Sun, Jun 23, 2019 at 4:49 AM nicolas_boiteux via golang-nuts < >> golan...@googlegroups.com> wrote: >> >> > >>> >> >> > >>> I need some assistance to export a GO dll function to a C >> program. >> >> > >>> >> >> > >>> The C program (wich i m not the author) required to call a >> function with this name: _RVExtension@12 >> >> > >> >> >> > >> >> >> > >> That is not a valid symbol (i.e., function name) in either C or >> Go. In other words the following C is invalid: >> >> > >> >> >> > >> extern int _RVExtension@12(); >> >> > >> int main() { >> >> > >> _RVExtension@12(); >> >> > >> } >> >> > >> >> >> > >> Your question has nothing to do with Go or C as such. What does >> the "@12" represent? Is it an API version number? In any event your >> question is really about a specific build toolchain on a specific platform. >> And you didn't even bother to tell us what platform you are using. I'm >> guessing MS Windows but we shouldn't have to make such guesses. >> >> > >> >> >> > >> -- >> >> > >> Kurtis Rader >> >> > >> Caretaker of the exceptional canines Junior and Hank >> >> > > >> >> > > -- >> >> > > You received this message because you are subscribed to the Google >> Groups "golang-nuts" group. >> >> > > To unsubscribe from this group and stop receiving emails from it, >> send an email to golan...@googlegroups.com. >> >> > > To view this discussion on the web visit >> https://groups.google.com/d/msgid/golang-nuts/ec18ff38-d70b-41ef-b7b4-fb243f407e1c%40googlegroups.com. >> >> >> >> > > For more options, visit https://groups.google.com/d/optout. >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups "golang-nuts" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> an email to golan...@googlegroups.com. >> > To view this discussion on the web visit >> https://groups.google.com/d/msgid/golang-nuts/0e90774a-3814-4d71-b752-8cd399cb26e3%40googlegroups.com. >> >> >> > For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. 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