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Re: [PATCH mingw/gold] Fix mingw gold build with plugins enabled for non-dlfcn case

On Wed, Jan 9, 2013 at 6:35 AM, Pavel Chupin <> wrote:
> On Sat, Jan 5, 2013 at 11:18 PM, Ian Lance Taylor <> wrote:
>> On Fri, Dec 28, 2012 at 10:41 AM, Pavel Chupin <> wrote:
>>> Attached patch fixes mingw build configured (for example) as:
>>> ../configure --prefix=`pwd`/../INSTALL --target=i686-linux-android
>>> --host=i586-pc-mingw32msvc --build=i386-linux-gnu --enable-plugins
>>> --enable-gold
>>> make
>>> Error message:
>>> ../../gold/ fatal error: dlfcn.h: No such file or directory
>>> I'm fixing it like it's done in bfd configure: check for headers and
>>> library, add/not-add -ldl on link.
>>> Also adding windows.h case into to handle case when
>>> mingw-dlfcn is not installed on the system.
>>> ChangeLog:
>>> 2012-12-25  Pavel Chupin  <>
>>>        Fix mingw gold build with plugins enabled
>>>        * gold/ Replace -ldl with @lt_cv_dlopen_libs@.
>>>        * gold/aclocal.m4: Include libtool modules.
>>>        * gold/ Export lt_cv_dlopen_libs and add headers check.
>>>        * gold/ Handle non-dlfcn case.
>>>        * gold/ Regenerate.
>>>        * gold/ Regenerate.
>>>        * gold/configure: Regenerate.
>>>        * gold/testsuite/ Regenerate.
>> Sorry for the slow review.  The general idea is fine but the
>> formatting is wrong.  This is C++ code, not C: no space between
>> function name and left parenthesis.  Keep line lengths less than 80
>> columns--the body of dlsym needs a line break.  Don't define
>> dlclose--it's not called.  dlerror should return an ordinary error
>> string--no capitalization, no punctuation.
>> In, the comment should be a complete sentence with proper
>> capitalization and punctuation.  It should explain why you are using
>> libtool.
>> Thanks.
>> Ian
> Hi Ian,
> Thanks for review. Please see modified patch attached.

Hmmmm, there is a problem here.  You have introduced the use of
libtool into when it was not there before.  When I run
autoreconf, this causes automake to rebuild the linker Makefile to use
libtool rather than the simple commands that it used before.  I'm not
at all sure that that is a good idea.

Can we get this information without using libtool?


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