ID:               32649
 Updated by:       [EMAIL PROTECTED]
 Reported By:      dan dot scott at ca dot ibm dot com
-Status:           Open
+Status:           Closed
 Bug Type:         ODBC related
 Operating System: Red Hat Enterprise Linux 4.0
 PHP Version:      5CVS-2005-04-09 (dev)
 New Comment:

Added the more detailed error message into CVS (both HEAD / PHP_5_0
branches in which the original patch was added to)



Previous Comments:
------------------------------------------------------------------------

[2005-04-10 16:42:10] dan dot scott at ca dot ibm dot com

Jani:

Hmm, can we call it a usability bug in ext/odbc/config.m4 then?

If you're changing the configure method in a way that is known to break
some existing build scenarios by introducing new requirements, it would
be good to communicate the change. One way to do that is to provide a
more helpful error message if the user tries to compile --with-ibm-db2
but fails. Even "Try sourcing the DB2 environment first, dummy!" would
be a better hint than the current message. My recommendation would be
"Ensure that you have installed the DB2 application development headers
(sqllib/include/sqlcli1.h), and that you have sourced the DB2
environment, before running configure again."

If tony2001 could make the requested config.m4 error message change, I
would be happy to add the new requirement to the docs for Unified ODBC.
That way, if the user actually reads the docs before they compile they
will have a good chance of succeeding; and if they don't, and out of
old habit suddenly find their configure command breaks, they will have
a very good idea of how to correct the problem without having to go
back to the docs.

And no, DB2 does not add itself to /etc/ld.so.conf (or the equivalent
on other operating systems). Part of the install of DB2 creates a new
user, the purpose of which is to contain the DB2-related settings and
environment.

------------------------------------------------------------------------

[2005-04-10 12:30:41] [EMAIL PROTECTED]

There is no bug here. Usually when you build something, you build it
within same environment you RUN it. Some programs REQUIRE this. Before
we've used flawed
'if-file-with-this-name-exist-assume-it-is-the-library' which of course
won't work for everyone. 

The current behaviour is the correct one and that will not be changed.
We will actually change all the places with the flawed method to use
the correct one so you can expect other extensions to "break" also.
(unless your LD_LIBRARY_PATH is correct)

And doesn't that IBM-DB2 add it's libline into /etc/ld.so.conf??


------------------------------------------------------------------------

[2005-04-09 21:58:53] dan dot scott at ca dot ibm dot com

Description:
------------
Revision 1.70 breaks Unified ODBC compile against IBM DB2 on Linux
(RHEL 4.0) if user has not sourced their DB2 environment.



Reproduce code:
---------------
Configure options:

./configure --without-sqlite --with-ibm-db2=/home/db2inst1/sqllib
--with-pdo-odbc=ibm-db2,/home/db2inst1/sqllib



Expected result:
----------------
I expect configure to find the DB2 header files and libraries, have its
requirements satisfied, and complete the configuration. This configure
line has worked for at least five years (well, okay, drop the sqlite
and pdo-odbc parts).

Actual result:
--------------
The configure command results in:

checking for IBM DB2 support... no
configure: error: build test failed. Please check the config.log for
details.

config.log notes that the gconftest failed because it cannot load
libdb2.so.1.

Why does this occur now? Due to the recent changes to the config.m4
file (to provide better cross-platform support), a  stricter and not at
all obvious requirement has been introduced: the user must now source
the DB2 environment before running ./configure.

If the user has sourced the $IBM_DB2/db2profile in their environment
first, then the ./configure command succeeds. The reason is that one of
the environment changes db2profile makes is to modify LD_LIBRARY_PATH
and LIBPATH in the user's environment to include the DB2 libraries.

If you want to keep the current, stricter, behavior, I would strongly
urge you to change the 'build test failed' message to include a
suggestion along the lines of: 'Perhaps you need to source your DB2
environment: (. $IBM_DB2/db2profile) before configuring PHP.'

You could try modifying config.m4 to source the DB2 environment before
attempting to compile gconftest, but that will fail if the user has
pointed to /opt/IBM/db2/V8.1 instead of to a DB2 instance user.

You could also try modifying LD_LIBRARY_PATH, LIBPATH, etc. before
attempting to compile gconftest -- although that will likely introduce
more cross-platform issues.


------------------------------------------------------------------------


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