[darcs-users] Trouble building Darcs in Windows XP

[Will]

"Jackie Tung" <mkjt2 at cam.ac.uk> writes:

> Hello all, I am new to this list, and I am really stuck trying to
> build darcs from the source in winXP.  I took the following steps,
> would anyone be kind enough to point out what I am doing wrong?:
>
> 1) I installed ghc.  Added c:\<ghc dir>\bin to PATH
> 2) I unzipped the darcs sources to c:\darcs
> 3) I installed MingW to c:\mingw\ by runnin MinGW-3.1.0-1.exe.
> 4) I installed the following:     MSys - MSYS-1.0.10.exe (c:\msys)
>                                                MSysDTK -
>                                                msysDTK-1.0.1.exe
>                                                (c:\msys)
>           Then I extracted contents of msys-autoconf-2.59.tar.bz2 and
>           msys-automake-1.8.2.tar.bz2 to c:\msys, overwriting when
>           necessary
> 5) Extracted zlib121-dll.zip to <tmp folder>\.  Copied zlib1.dll to
>    c:\windows\system AND c:\windows\system32 (as instructed in the
>    zlib instructions)
>     Copied zconf.h and zlib.h in <tmp folder>\include to
>     c:\ghc\gcc-lib\include and to c:\mingw\include
>     Copied zdll.exp, zdll.lib and zlib.def in <tmp folder>\lib to
>     c:\ghc\gcc-lib and to c:\mingw\lib

It looks like you got zlib development files for the Microsoft
toolchain.  GHC and mingw use GCC which expects unix-style .a files,
so you will need libz.a or its DLL equivalent.

The libraries I use to build darcs are available at
http://glozer.net/darcs/misc/win32-libs.zip

> 6) Downloaded mingw "dev" version (as the bin version didn't seem to
>    have any headers or libraries in it) of curl
>    (curl-7.12.2-win32-ssl-devel-mingw32.zip)
>     Extracted to c:\curl, then copied c:\curl\libcurl.dll to the same
>     library directories as in 5).  Copied c:\curl\include\*.* to
>     header directories as in 5)
>
> 7) set PATH the include the required directories.
> 8) Used commands:  export GHC=/c/<ghc-dir>/bin/ghc.exe - OK
>                                  autoconf - OK
>                                  ./configure --disable-mmap
>                                  --target=mingw - 
> FAILS
>                                         Final error messages are:
>                                             "checking for gzopen .... No"
>                                             "checking for gzopen in
>                                             -lz ......No"
>                                             "configure: error:  Cannot
>                                             find system's zlib
>                                             library:  Please set the
>                                             LDFLAGS env variable!"
> Any ideas?

Configure is failing since it can't find a valid zlib.

Regards,
Will