问题描述
我构建了一个fortran dll，现在尝试在fortran主程序中使用它.问题是我无法将主程序正确链接到dll.
I built a fortran dll and I try now to use it in a fortran main. The problem is I cannot link correctly the main to the dll.
我在WIndows10上，我使用cygwin的gfortran(cygwin的32位版本，gfortran来自套件i686-w64-mingw32).
I am on WIndows10 and I use gfortran from cygwin (the 32 bit version of cygwin, gfortran comes from the suite i686-w64-mingw32).
这是dll:$更多helloworld.f90
Here is the dll:$ more helloworld.f90
function hello()
integer hello
hello=1
return
end
我这样编译并生成dll:
I complile and generate the dll like this:
gfortran -fno-underscoring -c helloworld.f90
gfortran -shared -o helloworld.dll helloworld.o
这是主要的$ $ usehello.f90
Here is the main$ more usehello.f90
program usehello
integer, external :: hello
integer :: i
i=1
write(*,*) hello(i)
stop
end
编译正常:
i686-w64-mingw32-gfortran.exe -c -fno-underscoring usehello.f90
链接失败:
i686-w64-mingw32-gfortran.exe usehello.o helloworld.dll -o usehello
error while loading shared libraries: libgfortran-5.dll: cannot open shared object file: No such file or directory
但是，我有这个文件:
$ ls -l /usr/i686-w64-mingw32/sys-root/mingw/bin/libgfortran-5.dll
-rwxr-xr-x 1 UT013536+l-pg164999 UT013536+Aucun 2460672 4 mars 04:46 /usr/i686-w64-mingw32/sys-root/mingw/bin/libgfortran-5.dll
我试图添加--static-libgfortran(我不确信不为dll使用某些静态"东西，但是...):显然链接正确，但是可执行文件失败:
I have tried to add --static-libgfortran (I wasn't not convinced of using something 'static' for a dll but so...):It links apparently correctly but the executable fails:
$ i686-w64-mingw32-gfortran.exe usehello.o helloworld.dll -static-libgfortran -o usehello
$ ./usehello
usehello.exe: error while loading shared libraries: libquadmath-0.dll: cannot open shared object file: No such file or directory
听起来好像缺少环境变量，但是我找不到关于这种失败的任何报告.谢谢，以防有人可以帮忙...
Sounds like if an environnement variable was missing but I cannot find any post reporting on this kind of fail. Thanks in case some one can help...
推荐答案
实际上，使用命令i686-w64-mingw32-gfortran.exe的想法不好.
Actually, the idea to use the command i686-w64-mingw32-gfortran.exe is not good...if we simply use gfortran it works fine...
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