On Wed, Sep 19, 2001 at 07:58:14PM -0500, [EMAIL PROTECTED] wrote:
> We've modified libtool.m4 to perfer shl_load on HP-UX *even* if dlopen
> is available. The rationale for this is because dlopen() requires a
> patch which all users might not have (we're running into this problem
> now). Unfortunately, ltdl calls AC_LTDL_DLLIB which searches for
> *every* possible loader and defines them all in libtldl/ltdl.c. Why?
> Why not just pick the first we find? The current behaviour uses
> shl_load and dlopen on HP-UX by default. I'd like to get this changed
> to shl_load only.
Patch below. Tested on HP-UX 10.20 and 11.00.
--
albert chin ([EMAIL PROTECTED])
-- snip snip
2001-09-21 Albert Chin-A-Young <[EMAIL PROTECTED]>
* ltdl.m4: Even though HP-UX 10.20 and 11.00 support
shl_load *and* dlopen, dlopen works correctly only
with a patch. Because we want to avoid the situation
where we build on a system with the patch but deploy
on a system without, use shl_load exclusively if found.
Index: ltdl.m4
===================================================================
RCS file: /cvsroot/libtool/libtool/ltdl.m4,v
retrieving revision 1.36
diff -u -3 -p -r1.36 ltdl.m4
--- ltdl.m4 2001/09/13 19:47:02 1.36
+++ ltdl.m4 2001/09/21 06:32:49
@@ -250,39 +250,37 @@ AC_DEFUN([AC_LTDL_DLLIB],
[LIBADD_DL=
AC_SUBST(LIBADD_DL)
AC_LANG_PUSH([C])
-AC_CHECK_LIB([dl], [dlopen],
- [AC_DEFINE([HAVE_LIBDL], [1],
- [Define if you have the libdl library or equivalent.])
- LIBADD_DL="-ldl"],
- [AC_TRY_LINK([#if HAVE_DLFCN_H
-# include <dlfcn.h>
-#endif
- ],
- [dlopen(0, 0);],
- [AC_DEFINE(HAVE_LIBDL, 1,
- [Define if you have the libdl library or equivalent.])],
- [AC_CHECK_LIB(svld, dlopen,
- [AC_DEFINE(HAVE_LIBDL, 1,
- [Define if you have the libdl library or equivalent.])
- LIBADD_DL="-lsvld"
- ])
- ])
- ])
-
AC_CHECK_FUNC(shl_load,
[AC_DEFINE([HAVE_SHL_LOAD], [1],
[Define if you have the shl_load function.])],
[AC_CHECK_LIB([dld], [shl_load],
[AC_DEFINE([HAVE_SHL_LOAD], [1],
[Define if you have the shl_load function.])
- LIBADD_DL="$LIBADD_DL -ldld"
+ LIBADD_DL="$LIBADD_DL -ldld"],
+ [AC_CHECK_LIB([dl], [dlopen],
+ [AC_DEFINE([HAVE_LIBDL], [1],
+ [Define if you have the libdl library or equivalent.])
+ LIBADD_DL="-ldl"],
+ [AC_TRY_LINK([#if HAVE_DLFCN_H
+# include <dlfcn.h>
+#endif
+ ],
+ [dlopen(0, 0);],
+ [AC_DEFINE([HAVE_LIBDL], [1],
+ [Define if you have the libdl library or equivalent.])],
+ [AC_CHECK_LIB([svld], [dlopen],
+ [AC_DEFINE([HAVE_LIBDL], [1],
+ [Define if you have the libdl library or equivalent.])
+ LIBADD_DL="-lsvld"],
+ [AC_CHECK_LIB([dld], [dld_link],
+ [AC_DEFINE([HAVE_DLD], [1],
+ [Define if you have the GNU dld library.])
+ test x"$ac_cv_lib_dld_shl_load" = xyes || LIBADD_DL="$LIBADD_DL -ldld"
+ ])
+ ])
+ ])
+ ])
])
- ])
-
-AC_CHECK_LIB([dld], [dld_link],
- [AC_DEFINE([HAVE_DLD], [1],
- [Define if you have the GNU dld library.])
- test x"$ac_cv_lib_dld_shl_load" = xyes || LIBADD_DL="$LIBADD_DL -ldld"
])
if test x"$ac_cv_func_dlopen" = xyes || test x"$ac_cv_lib_dl_dlopen" = xyes
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