[Scons-users] SharedLibrary + SHLIBVERSION and cygwin
William Blevins
wblevins001 at gmail.com
Fri Aug 28 11:55:01 EDT 2015
I believe this is the same issue as
http://article.gmane.org/gmane.comp.programming.tools.scons.user/27049
which you already reported.
The developer of the originating commit has not responded to me yet, but it
should be fixable. Try this for now...
diff -r c2575505514f src/engine/SCons/Tool/link.py
--- a/src/engine/SCons/Tool/link.py Fri Aug 07 10:29:05 2015 -0400
+++ b/src/engine/SCons/Tool/link.py Fri Aug 07 13:30:28 2015 -0400
@@ -93,6 +93,7 @@
if Verbose:
print "shlib_emitter: add side effect - ",name
env.Clean(shlib, target[0])
+ env.Depends(target[0], shlib)
return ([shlib], source)
except KeyError:
version = None
On Fri, Aug 28, 2015 at 7:56 AM, Paweł Tomulik <ptomulik at meil.pw.edu.pl>
wrote:
> Hi, any ideas here?
>
> W dniu 2015-08-18 23:11, Paweł Tomulik pisze:
>
>> No, it doesn't seem to help:
>>
>>
>> ptomulik at mwnotebook:$ scons --tree=all
>> scons: Reading SConscript files ...
>> scons: done reading SConscript files.
>> scons: Building targets ...
>> g++ -o foo.os -c -I. foo.cpp
>> g++ -o cygfoo-0-1-2.dll -Wl,-no-undefined -shared -Wl,-Bsymbolic
>> -Wl,--out-implib,cygfoo-0-1-2.a -Wl,--out-implib=libfoo-0-1-2.dll.a
>> -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--whole-archive
>> foo.os -Wl,--no-whole-archive -L.
>> g++ -o main.o -c -I. main.cpp
>> g++ -o main.exe -Wl,-no-undefined main.o -L. -lfoo
>> /bin/ld: cannot find -lfoo
>> collect2: error: ld returned 1 exit status
>> scons: *** [main.exe] Error 1
>> +-.
>> +-cygfoo-0-1-2.dll
>> | +-foo.os
>> | +-foo.cpp
>> | +-/bin/g++
>> +-cygfoo.dll
>> +-foo.cpp
>> +-foo.hpp
>> +-foo.os
>> | +-foo.cpp
>> | +-/bin/g++
>> +-libfoo-0-1-2.dll.a
>> | +-foo.os
>> | +-foo.cpp
>> | +-/bin/g++
>> +-main.cpp
>> +-main.exe
>> | +-main.o
>> | | +-main.cpp
>> | | +-foo.hpp
>> | | +-/bin/g++
>> | +-/bin/g++
>> +-main.o
>> | +-main.cpp
>> | +-foo.hpp
>> | +-/bin/g++
>> +-SConstruct
>> scons: building terminated because of errors.
>>
>>
>> After a single scons pass I see the following files in tree:
>>
>> ptomulik at mwnotebook:$ ls -lah
>> razem 28K
>> drwxr-xr-x+ 1 ptomulik Brak 0 08-18 22:34 .
>> drwxrwxrwt 1 ptomulik root 0 08-18 22:34 ..
>> -rw-r--r-- 1 ptomulik Brak 9,7K 08-18 22:34 .sconsign.dblite
>> lrwxrwxrwx 1 ptomulik Brak 18 08-18 22:34 cygfoo-0-1-2.dll ->
>> cygfoo-0-1-2.dll.0
>> lrwxrwxrwx 1 ptomulik Brak 16 08-18 22:34 cygfoo-0-1-2.dll.0 ->
>> cygfoo-0-1-2.dll
>> -rw-r--r-- 1 ptomulik Brak 25 08-10 11:12 foo.cpp
>> -rw-r--r-- 1 ptomulik Brak 50 08-10 11:12 foo.hpp
>> -rw-r--r-- 1 ptomulik Brak 616 08-18 22:34 foo.os
>> -rw-r--r-- 1 ptomulik Brak 2,8K 08-18 22:34 libfoo-0-1-2.dll.a
>> -rw-r--r-- 1 ptomulik Brak 48 08-10 11:14 main.cpp
>> -rw-r--r-- 1 ptomulik Brak 680 08-18 22:34 main.o
>> -rw-r--r-- 1 ptomulik Brak 1,3K 08-10 11:37 README.txt
>> -rw-r--r-- 1 ptomulik Brak 242 08-10 11:51 SConstruct
>>
>> Instead of the shared library cygfoo-*.dll I've got two symlinks with a
>> circular dependency. I'm newbie here, but taking a look into my /usr/lib
>> I can't see much "versioned names" with symlinks that would resemble the
>> usual Linux way of shlib versioning. Quite better under /usr/bin/ where
>> cygwin stored cyg*.dll stuff, but there is still quite small number of
>> such symlinks. Has anyone checked whet is the standard way of
>> implementing versioned libraries on cygwin (if there is any)? Do you
>> know any docs, which describe it?
>>
>> Anyway, with unmodified SCons source, I let myself to perform two simple
>> experiments. First, I've ran scons once (which failed), then created the
>> following symlink
>>
>> ln -s libfoo-0-1-2.dll.a libfoo.dll.a
>>
>> and ran scons again - the mini-project was built successfully now.
>>
>> Second experiment was similar, just with:
>>
>> ln -s cygfoo-0-1-2.dll cygfoo.dll
>>
>> and it let me build the project as well.
>>
>> The difference between the two was that in the second case, scons -c
>> cleaned up the symbolic link cygfoo.dll, whereas in the first case the
>> link libfoo.dll.a was not cleaned up.
>>
>>
>>
>> W dniu 2015-08-18 17:31, Bill Deegan pisze:
>>
>>> Try changing line 259 of SCons/Tool/__init__.py from:
>>>
>>> elif platform == 'posix' or platform == 'sunos':
>>>
>>> to
>>> elif platform == 'posix' or platform == 'sunos' or platform ==
>>> 'cygwin':
>>>
>>> And see if that fixes it.
>>>
>>> -Bill
>>>
>>>
>>> On Tue, Aug 18, 2015 at 10:23 AM, Paweł Tomulik <ptomulik at meil.pw.edu.pl
>>> <mailto:ptomulik at meil.pw.edu.pl>> wrote:
>>>
>>> I'm not sure,
>>>
>>> AFAIR I only use packages installed via cygwin's "setup.exe"
>>> utility. I'm not 100% concious of how that stuff works...
>>>
>>>
>>> On 2015-08-18 15:57, Bill Deegan wrote:
>>>
>>> Looks like you are using the mingw tools and not native cygwin
>>> compiler?
>>>
>>> -Bill
>>>
>>> On Tue, Aug 18, 2015 at 8:58 AM, Paweł Tomulik
>>> <ptomulik at meil.pw.edu.pl <mailto:ptomulik at meil.pw.edu.pl>>
>>> wrote:
>>>
>>> Hi all,
>>>
>>> I just started experimenting with SCons on cygwing trying to
>>> port
>>> one of my projects to cygwin. Looks like I'm unlucky with the
>>> SharedLibrary builder or just misunderstand how stuff works.
>>>
>>> At the moment I'm trying to build a minimal project with one
>>> executable and one shared library. The following is build
>>> report
>>> from that simple project (attached) on cygwin, SCons 2.3.4,
>>> python
>>> 2.7.10:
>>>
>>> ptomulik at mwnotebook:$ scons --tree=all
>>> scons: Reading SConscript files ...
>>> scons: done reading SConscript files.
>>> scons: Building targets ...
>>> g++ -o cygfoo-0-1-2.dll -Wl,-no-undefined -shared
>>> -Wl,-Bsymbolic
>>> -Wl,--out-implib,cygfoo-0-1-2.a
>>> -Wl,--out-implib=libfoo-0-1-2.dll.a
>>> -Wl,--export-all-symbols -Wl,--enable-auto-import
>>> -Wl,--whole-archive foo.os -Wl,--no-whole-archive -L.
>>> g++ -o main.exe -Wl,-no-undefined main.o -L. -lfoo
>>> /bin/ld: cannot find -lfoo
>>> collect2: error: ld returned 1 exit status
>>> scons: *** [main.exe] Error 1
>>> +-.
>>> +-cygfoo-0-1-2.dll
>>> | +-cygfoo-0-1-2.dll
>>> | +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-cygfoo-0-1-2.dll
>>> | +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-foo.cpp
>>> +-foo.hpp
>>> +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-libfoo-0-1-2.dll.a
>>> | +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-main.cpp
>>> +-main.exe
>>> | +-main.o
>>> | | +-main.cpp
>>> | | +-foo.hpp
>>> | | +-/bin/g++
>>> | +-/bin/g++
>>> | +-cygfoo-0-1-2.dll
>>> | +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-main.o
>>> | +-main.cpp
>>> | +-foo.hpp
>>> | +-/bin/g++
>>> +-SConstruct
>>> scons: building terminated because of errors.
>>>
>>> This is for SCons 2.3.5:
>>>
>>> ptomulik at mwnotebook:$ scons --tree=all
>>> scons: Reading SConscript files ...
>>> scons: done reading SConscript files.
>>> scons: Building targets ...
>>> g++ -o foo.os -c -I. foo.cpp
>>> g++ -o cygfoo-0-1-2.dll -Wl,-no-undefined -shared
>>> -Wl,-Bsymbolic
>>> -Wl,--out-implib,cygfoo-0-1-2.a
>>> -Wl,--out-implib=libfoo-0-1-2.dll.a
>>> -Wl,--export-all-symbols -Wl,--enable-auto-import
>>> -Wl,--whole-archive foo.os -Wl,--no-whole-archive -L.
>>> g++ -o main.o -c -I. main.cpp
>>> g++ -o main.exe -Wl,-no-undefined main.o -L. -lfoo
>>> /bin/ld: cannot find -lfoo
>>> collect2: error: ld returned 1 exit status
>>> scons: *** [main.exe] Error 1
>>> +-.
>>> +-cygfoo-0-1-2.dll
>>> | +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-cygfoo.dll
>>> +-foo.cpp
>>> +-foo.hpp
>>> +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-libfoo-0-1-2.dll.a
>>> | +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-main.cpp
>>> +-main.exe
>>> | +-main.o
>>> | | +-main.cpp
>>> | | +-foo.hpp
>>> | | +-/bin/g++
>>> | +-/bin/g++
>>> +-main.o
>>> | +-main.cpp
>>> | +-foo.hpp
>>> | +-/bin/g++
>>> +-SConstruct
>>> scons: building terminated because of errors.
>>>
>>> This is for SCons 2.3.6:
>>>
>>> ptomulik at mwnotebook:$ scons --tree=all
>>> scons: Reading SConscript files ...
>>> scons: done reading SConscript files.
>>> scons: Building targets ...
>>> g++ -o foo.os -c -I. foo.cpp
>>> g++ -o cygfoo-0-1-2.dll -Wl,-no-undefined -shared
>>> -Wl,-Bsymbolic
>>> -Wl,--out-implib,cygfoo-0-1-2.a
>>> -Wl,--out-implib=libfoo-0-1-2.dll.a
>>> -Wl,--export-all-symbols -Wl,--enable-auto-import
>>> -Wl,--whole-archive foo.os -Wl,--no-whole-archive -L.
>>> g++ -o main.o -c -I. main.cpp
>>> g++ -o main.exe -Wl,-no-undefined main.o -L. -lfoo
>>> /bin/ld: cannot find -lfoo
>>> collect2: error: ld returned 1 exit status
>>> scons: *** [main.exe] Error 1
>>> +-.
>>> +-cygfoo-0-1-2.dll
>>> | +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-cygfoo.dll
>>> +-foo.cpp
>>> +-foo.hpp
>>> +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-libfoo-0-1-2.dll.a
>>> | +-foo.os
>>> | +-foo.cpp
>>> | +-/bin/g++
>>> +-main.cpp
>>> +-main.exe
>>> | +-main.o
>>> | | +-main.cpp
>>> | | +-foo.hpp
>>> | | +-/bin/g++
>>> | +-/bin/g++
>>> +-main.o
>>> | +-main.cpp
>>> | +-foo.hpp
>>> | +-/bin/g++
>>> +-SConstruct
>>> scons: building terminated because of errors.
>>>
>>> Could someone help me pls? What is the proper way to write a
>>> portable SConstruct file, such that the attached project
>>> could build
>>> on Most platforms? Do I need a versioned shared libs at
>>> all on
>>> cygwin? It seems like the SONAME stuff does not apply here?
>>>
>>> --
>>> Paweł Tomulik
>>>
>>> _______________________________________________
>>> Scons-users mailing list
>>> Scons-users at scons.org <mailto:Scons-users at scons.org>
>>> https://pairlist4.pair.net/mailman/listinfo/scons-users [1]
>>>
>>>
>>>
>>>
>>> Links:
>>> ------
>>> [1] https://pairlist4.pair.net/mailman/listinfo/scons-users
>>>
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>>>
>>
>>
>
> --
> Paweł Tomulik
> Instytut Techniki Lotniczej i Mechaniki Stosowanej
> Politechnika Warszawska
> _______________________________________________
> Scons-users mailing list
> Scons-users at scons.org
> https://pairlist4.pair.net/mailman/listinfo/scons-users
>
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