Hello,
I'm trying to use ctypes on windows. When I'm trying
#use"ctypes.foreign"
I'm getting a DLL error (see at the end of this message).
My ocaml is x86_64-w64-mingw version.
I did install libffi this way :
tar xaf libffi-3.2.1.tar.gz
cd libffi-3.2.1
./autogen.sh
./configure --host=x86_64-w64-mingw32 --prefix
/usr/x86_64-w64-mingw32/sys-root/mingw
make
make install
It worked!
$ x86_64-w64-mingw32-pkg-config.exe --list-all
libffi libffi - Library supporting Foreign Function
Interfaces
gsettings-desktop-schemas gsettings-desktop-schemas - Shared GSettings
schemas for the desktop, including helper headers
autoopts AutoOpts - A semi-automated generated/library
option parser
shared-mime-info shared-mime-info - Freedesktop common MIME
database
$ x86_64-w64-mingw32-pkg-config.exe libffi --libs
-L/usr/x86_64-w64-mingw32/sys-root/mingw/lib/../lib -lffi
$ x86_64-w64-mingw32-pkg-config.exe libffi --cflags
-I/usr/x86_64-w64-mingw32/sys-root/mingw/lib/libffi-3.2.1/include
I compiled ctypes :
7z x ocaml-ctypes-0.4.1.zip
cd ocaml-ctypes-0.4.1
export LIBFFI_LIBS=$(x86_64-w64-mingw32-pkg-config.exe libffi --libs)
export LIBFFI_CFLAGS=$(x86_64-w64-mingw32-pkg-config.exe libffi --cflags)
make
make install
$ ocaml
OCaml version 4.02.1
# #use"topfind";;
- : unit = ()
Findlib has been successfully loaded. Additional directives:
#require "package";; to load a package
#list;; to list the available packages
#camlp4o;; to load camlp4 (standard syntax)
#camlp4r;; to load camlp4 (revised syntax)
#predicates "p,q,...";; to set these predicates
Topfind.reset();; to force that packages will be reloaded
#thread;; to enable threads
- : unit = ()
# #require"ctypes.foreign";;
C:\OCaml\lib\unix.cma: loaded
C:\OCaml\lib\bigarray.cma: loaded
C:\OCaml\lib\str.cma: loaded
C:\OCaml\lib\site-lib\bytes: added to search path
C:\OCaml\lib\site-lib\ctypes: added to search path
C:\OCaml\lib\site-lib\ctypes\ctypes.cma: loaded
C:\OCaml\lib\site-lib\ctypes\ctypes-foreign-base.cma: loaded
Cannot load required shared library dllctypes-foreign-base_stubs.
Reason: C:\OCaml\lib\site-lib\ctypes\dllctypes-foreign-base_stubs.dll:
Cannot resolve ffi_type_pointer.
C:\OCaml\lib\site-lib\ctypes\ctypes-foreign-unthreaded.cma: loaded
Characters -1--1:
#require"ctypes.foreign";;
Error: Reference to undefined global `Ctypes_closure_properties'
I'm not sure if it can help to understand what the problem is?
$ ldd /cygdrive/c/OCaml/lib/site-lib/ctypes/dllctypes-foreign-base_stubs.dll
Cannot find FLEXDLL_RELOCATE
ntdll.dll => /cygdrive/c/Windows/SYSTEM32/ntdll.dll (0x76e40000)
kernel32.dll => /cygdrive/c/Windows/system32/kernel32.dll
(0x76c20000)
KERNELBASE.dll => /cygdrive/c/Windows/system32/KERNELBASE.dll
(0x7fefcc60000)
??? => ??? (0x6e3c0000)
msvcrt.dll => /cygdrive/c/Windows/system32/msvcrt.dll
(0x7feff0b0000)
USER32.dll => /cygdrive/c/Windows/system32/USER32.dll (0x76d40000)
GDI32.dll => /cygdrive/c/Windows/system32/GDI32.dll (0x7fefed00000)
LPK.dll => /cygdrive/c/Windows/system32/LPK.dll (0x7fefd740000)
USP10.dll => /cygdrive/c/Windows/system32/USP10.dll (0x7fefd750000)
??? => ??? (0x6b740000)
??? => ??? (0x77000000)
IMM32.DLL => /cygdrive/c/Windows/system32/IMM32.DLL (0x7fefd710000)
MSCTF.dll => /cygdrive/c/Windows/system32/MSCTF.dll (0x7fefed70000)
nvinitx.dll => /cygdrive/c/Windows/system32/nvinitx.dll
(0x7fefcb30000)
VERSION.dll => /cygdrive/c/Windows/system32/VERSION.dll
(0x7fefcb20000)
ADVAPI32.dll => /cygdrive/c/Windows/system32/ADVAPI32.dll
(0x7fefd280000)
sechost.dll => /cygdrive/c/Windows/SYSTEM32/sechost.dll
(0x7feff090000)
RPCRT4.dll => /cygdrive/c/Windows/system32/RPCRT4.dll
(0x7fefd040000)
igdumd64.dll => /cygdrive/c/Windows/system32/NV/igdumd64.dll
(0x7feed120000)
SETUPAPI.dll => /cygdrive/c/Windows/system32/SETUPAPI.dll
(0x7fefd360000)
CFGMGR32.dll => /cygdrive/c/Windows/system32/CFGMGR32.dll
(0x7fefcc20000)
OLEAUT32.dll => /cygdrive/c/Windows/system32/OLEAUT32.dll
(0x7fefd630000)
ole32.dll => /cygdrive/c/Windows/system32/ole32.dll (0x7fefee80000)
DEVOBJ.dll => /cygdrive/c/Windows/system32/DEVOBJ.dll
(0x7fefcf20000)
igd10umd64.dll =>
/cygdrive/c/Windows/system32/NV/igd10umd64.dll (0x7feec200000)
Thanks for any help!
--
Matthieu Dubuget
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