Fork#41049: A C++ program compiled with MinGW64 can't load libwinpthread-1.dll unless it is
in the path, which it is when I built it but isn't when customers run it.
Open Date: 2020-12-13 23:46
Last Update: 2020-12-14 10:08
URL for this Ticket:
https://osdn.net//projects/mingw/ticket/41049
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Last Changes/Comment on this Ticket:
2020-12-14 10:08 Updated by: keith
* Status Update from Open to Closed
* Resolution Update from None to Invalid
Comment:
MinGW64? Seriously? A product from a rogue project, which illegally infringes
our trademark? Not supported here!
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Ticket Status:
Reporter: wba2
Owner: (None)
Type: Issues
Status: Closed
Priority: 5 - Medium
MileStone: (None)
Component: (None)
Severity: 5 - Medium
Resolution: Invalid
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Ticket details:
The program below was cut way down from a much larger program that uses virtual
classes to use multiple user interface subsystems. My attempts to make it
statically bind libwinpthread-1.dll into the executable were unsuccessful. I
knew what the "-Wl,--out-implib,libsdlib.a" stuff was about at the time, and it
seemed to be the right thing. It has worked with MinGW 32 for years.
System is Windows XP Service Pack 3, on Compaq Presario V3000.
MinGW64 was downloaded and installed on Nov 29, 2020. It's pedigree seems to be
Version 8.1.0 Architecture i686 Threads posix Exception dwarf Build revision 0
Original destination folder mingw-w64\i686-8.1.0-posix-dwarf-rt_v6-rev0
Tools pedigrees are: C:\wba\sd>gcc --version gcc (i686-posix-dwarf-rev0, Built
by MinGW-W64 project) 8.1.0
C:\wba\sd>ld --version GNU ld (GNU Binutils) 2.30
Program is
#include <stdio.h>
class iobase {
virtual void create_menu() = 0;
};
class iofull : public iobase {
void create_menu();
};
int main(int argc, char *argv[]) { printf("Hello, World!\n"); }
static char *call_menu_prompts;
void iofull::create_menu() { call_menu_prompts = new char50; }
Compile with
g++ -static-libgcc -static-libstdc++ -shared -o sdlib.dll
-Wl,--out-implib,libsdlib.a
g++ -static-libgcc -static-libstdc++ -O4 -c sdui-tty.cpp
g++ -static-libgcc -static-libstdc++ -mconsole -o sdtty.exe sdui-tty.o -L. -LC:
\MinGW64\mingw32 -lsdlib
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