[PATCH] ldd: support .oct and .so modules

[PATCH] ldd: support .oct and .so modules

[Yaakov (Cygwin/X)]

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Octave modules use the .oct extension, and several programs use .so for
modules even on Cygwin (e.g. Apache2, Mesa, OpenSSL, Ruby).  Currently,
running ldd(1) on any of these returns ENOEXEC.

The attached patch fixes ldd to treat these as DLLs and show their
runtime dependencies.


Yaakov


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2012-01-??  Yaakov Selkowitz  <yselkowitz@...>

	* ldd.cc (start_process): Handle .oct and .so as DLLs.

Index: ldd.cc
===================================================================
RCS file: /cvs/src/src/winsup/utils/ldd.cc,v
retrieving revision 1.13
diff -u -p -r1.13 ldd.cc
--- ldd.cc	17 Dec 2011 23:39:47 -0000	1.13
+++ ldd.cc	24 Jan 2012 05:43:41 -0000
@@ -189,7 +189,11 @@ start_process (const wchar_t *fn, bool& 
   PROCESS_INFORMATION pi;
   si.cb = sizeof (si);
   wchar_t *cmd;
-  if (wcslen (fn) < 4 || wcscasecmp (wcschr (fn, L'\0') - 4, L".dll") != 0)
+  /* OCaml natdynlink plugins (.cmxs) cannot be handled by ldd because they
+     can only be loaded by flexdll_dlopen() */
+  if (wcslen (fn) < 4 || (wcscasecmp (wcschr (fn, L'\0') - 4, L".dll") != 0
+       && wcscasecmp (wcschr (fn, L'\0') - 4, L".oct") != 0
+       && wcscasecmp (wcschr (fn, L'\0') - 3, L".so") != 0))
     {
       cmd = wcsdup (fn);
       isdll = false;

Re: [PATCH] ldd: support .oct and .so modules

[Christopher Faylor]

On Mon, Jan 23, 2012 at 11:53:23PM -0600, Yaakov (Cygwin/X) wrote:
>Octave modules use the .oct extension, and several programs use .so for
>modules even on Cygwin (e.g. Apache2, Mesa, OpenSSL, Ruby).  Currently,
>running ldd(1) on any of these returns ENOEXEC.
>
>The attached patch fixes ldd to treat these as DLLs and show their
>runtime dependencies.
>
>
>Yaakov
>

>2012-01-??  Yaakov Selkowitz  <yselkowitz@...>
>
>	* ldd.cc (start_process): Handle .oct and .so as DLLs.

Looks good.  Please check in.

Thanks.

cgf