Re: Problem linking DDD under cygwin

[Andrew Gaylard]

Steve Strobel wrote:
> I am also unable to get ddd-3.3.7 to link under Cygwin (details below).  In the 
> meantime, someone kindly sent me a copy of ddd.exe, which works fine.  I would 
> be glad to pass it on if you would like a copy (it is over 5MB zipped, so you 
> will need a big email inbox) - email me directly if you want it.  I tried to 
> send the following message to address@hidden earlier, but I never saw it show 
> up on the list...
>
> Subject: Trouble linking DDD 3.3.7 under Cygwin - can't find ipc library
>
> I am having trouble getting DDD 3.3.7 to link correctly under Cygwin under Windows 2000.  I have X and GDB 
> working, and lesstif installed, so  I think I have the other pieces DDD will need in place.  I ran 
> "./configure" then "make", which terminated while linking, unable to find the 
> "ipc" library, like this:
>
>
>         g++ -DNDEBUG -O2 -g -W -Wall -trigraphs -o vsl.exe vsl.o
>         <...many other object files...>
>         VSLErr.o VSLLib.o VSLNode.o VSLRead.o
>         -L/usr/X11R6/lib/usr/X11R6/lib/
>         libXm.a -lipc -lXaw -lXmu -lXt -lXpm -lXp -lXext -lX11 -lSM
>         -lICE -ltermcap -liberty
>         make[2]: Leaving directory `/ddd-3.3.7/ddd'
>         make[1]: Leaving directory `/ddd-3.3.7/ddd'
>         make[1]: Entering directory `/ddd-3.3.7'
>         make[1]: Nothing to be done for `all-am'.
>         make[1]: Leaving directory `/ddd-3.3.7'
>
>
>         address@hidden /ddd-3.3.7
>         $
>         usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../../../i686-
>         pc-cygwin/bin/ld: cannot find -lipc
>         collect2: ld returned 1 exit status
>         /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../../../i686-
>         pc-cygwin/bin/ld: cannot find -lipc
>         collect2: ld returned 1 exit status
>
>
> I searched to see if I had an "ipc" library, and found the following:
>
>
>         In cygwin/etc/setup
>                 cygipc.lst.gz
>         In cygwin/bin
>                 cygcygipc-2.dll
>                 ipc-daemon2.exe
>                 ipctest.exe
>                 libcygipc.a
>                 libcygipc.dll.a
>
>
> I don't know whether DDD should be looking for -lcygipc rather than -lipc when 
> targeting cygwin, or whether I should have an IPC library that I don't have.
>
> I checked config.log.  It seems that configure couldn't find ipc either, 
> although that didn't cause it to abort (I didn't notice the message when it 
> happened):
>
>         configure:14550: result: no
>         configure:14554: checking for shmat in -lipc
>         configure:14587: g++ -o conftest.exe -g -O2 -fpermissive
>                 conftest.cc -lipc   >&5
>
>         /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../../../i686-
>         pc-cygwin/bin/ld: cannot find -lipc
>                 collect2: ld returned 1 exit status
>                 configure:14590: $? = 1
>                 configure: failed program was:
>                 #line 14561 "configure"
>                 #include "confdefs.h"
>
>   The following lines in configure.ac make configure look for it:
>
>         dnl Check for -lipc library.  SCO unix is said to want that.
>         dnl
>         AC_CHECK_LIB(ipc, shmap, X11_LIBS="${X11_LIBS} -lipc",,
>                 ${X_PRE_LIBS} ${X11_LIBS} ${X_EXTRA_LIBS})
>
> I don't know if the IPC library is even needed on cygwin, or just SCO (based on 
> the comment).
>
> Am I missing an IPC library in Cygwin that I should have, or should DDD be 
> linking in the cygipc library that I already have?  Thanks for your help.
>
> Steve Strobel


Steve,

I'm not sure whether cygwin requires it or not.
Can you try editing your Makefile, removing the "-lipc" and
trying a "make check"?

Thanks,
Andrew

PS: Please hit <Enter> every 64 characters or so, your lines are
awfully long.