Help needed with gobject-introspection
Jon Turney
jon.turney@dronecode.org.uk
Thu May 21 15:48:39 GMT 2020
On 21/05/2020 16:13, Ken Brown via Cygwin-apps wrote:
>
>
> On 5/21/2020 9:24 AM, Jon Turney wrote:
>> On 20/05/2020 15:50, Ken Brown via Cygwin-apps wrote:
>>> On 5/19/2020 7:04 PM, Ken Brown via Cygwin-apps wrote:
>>>> I would like to adopt gimp and related packages. At the moment I'm
>>>> having trouble with babl, which is needed for gegl0.4, which is
>>>> needed for gimp. The problem involves gobject-introspection.
>>>>
>>>> If I disable introspection, the build works fine. This would be OK,
>>>> since babl has been built without introspection for several years.
>>>> But then the gegl0.4 build complains about the missing babl
>>>> introspection files, so I would have to disable introspection there
>>>> too, which hasn't been done in the past.
>>>>
>>>> So my preference is to figure out what the problem is and get the
>>>> babl build working with introspection. I'm attaching my cygport
>>>> file and patch.
>>>>
>>>> Here's the failing command...
>>>>
>>>> /usr/bin/g-ir-scanner -I/usr/include/gobject-introspection-1.0
>>>> -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -D_REENTRANT
>>>> --no-libtool --namespace=Babl --nsversion=0.1 --warn-all --output
>>>> babl/Babl-0.1.gir --c-include=babl.h
>>>> '--identifier-filter-cmd=/usr/bin/python3
>>>> /tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/babl/identfilter.py'
>>>> -DBABL_IS_BEING_COMPILED
>>>> -I/tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/babl
>>>> -I/tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/x86_64-pc-cygwin/babl
>>>> -I./. -I../. -I./babl/base/. -I../babl/base/.
>>>> --filelist=/tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/x86_64-pc-cygwin/babl/4170c83@@babl-0.1@sha/Babl_0.1_gir_filelist
>>>> --cflags-begin -fno-unsafe-math-optimizations
>>>> -Wdeclaration-after-statement -Winit-self -Wmissing-declarations
>>>> -Wmissing-prototypes -Wold-style-definition -Wpointer-arith -mmmx
>>>> -msse -mfpmath=sse -I./. -I../. -I./babl/base/. -I../babl/base/.
>>>> --cflags-end --library babl-0.1
>>>> -L/tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/x86_64-pc-cygwin/babl
>>>> --extra-library=m --extra-library=dl --extra-library=lcms2
>>>>
>>>> ...and the error message:
>>>>
>>>> g-ir-scanner: link: gcc -o
>>>> /tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/x86_64-pc-cygwin/tmp-introspectCwCaUc/Babl-0.1.exe
>>>> -ggdb -O2 -pipe -Wall -Werror=format-security
>>>> -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector-strong
>>>> --param=ssp-buffer-size=4
>>>> -fdebug-prefix-map=/tmp/cygbabl/babl-0.1.74-1.x86_64/build=/usr/src/debug/babl-0.1.74-1
>>>> -fdebug-prefix-map=/tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74=/usr/src/debug/babl-0.1.74-1
>>>> /tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/x86_64-pc-cygwin/tmp-introspectCwCaUc/Babl-0.1.o
>>>> -L. -lbabl-0.1 -lm -ldl -llcms2
>>>> -L/tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/x86_64-pc-cygwin/babl
>>>> -Wl,-rpath,/tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/x86_64-pc-cygwin/babl
>>>> -lgio-2.0 -lgobject-2.0 -Wl,--export-all-symbols -lgmodule-2.0
>>>> -lglib-2.0 -lintl
>>>> ERROR: can't resolve libraries to shared libraries: babl-0.1
>>>>
>>>> I don't understand the error message, because the command line contains
>>>>
>>>> -L/tmp/cygbabl/babl-0.1.74-1.x86_64/src/babl-0.1.74/x86_64-pc-cygwin/babl
>>>>
>>>>
>>>> and that directory contains libbabl-0.1.dll.a and cygbabl-0.1-0.dll.
>>>> I even tried adding that directory to my PATH to make sure the right
>>>> cygbabl-0.1-0.dll would be found, but that didn't help.
>>
>> This might possibly be related to the problem described in the comment
>> for:
>>
>> https://github.com/mesonbuild/meson/pull/2880/commits/8a27c08b05e4537d5061d30ddd8aad9dc52cf1c4
>>
>>
>>> By the way, in case you're wondering why I disabled the building of
>>> docs, it's because I was getting a build failure there too. I don't
>>> know if this is related to the introspection failure. The failing
>>> command there is
>>>
>>> /usr/bin/meson --internal exe --unpickle
>>> /tmp/cygbabl/babl-0.1.74-2.x86_64/src/babl-0.1.74/x86_64-pc-cygwin/meson-private/meson_exe_env_7bf39b99114d34540b83d26a5d8f097e05882836.dat
>>>
>>> cp: target 'docs/index.html.tmp' is not a directory
>>>
>>> I don't know why it's not showing me the actual cp command that fails.
>>
>> I believe it's is an infelicity in meson that it doesn't echo the
>> actual failing command here.
>>
>> Noted here:
>> https://github.com/mesonbuild/meson/pull/3716#issuecomment-395746838
>>
>>> The corresponding information in docs/meson.build is
>>>
>>> Reference_html = custom_target('Reference.html',
>>> input : [
>>> 'Reference-static.html',
>>> 'toc',
>>> index_html_tmp,
>>> ],
>>> output: [ 'Reference.html', ],
>>> command: [
>>> env_bin,
>>> 'cp', '@INPUT0@', '@OUTPUT@',
>>> '&&', xml_insert, '@OUTPUT@', 'TOC', '@INPUT1@',
>>> '&&', xml_insert, '@OUTPUT@', 'BablBase', '@INPUT2@',
>>> ],
>>> build_by_default: true,
>>> )
>>>
>>> There are several such custom targets in the file, and for all except
>>> this one, I see the actual cp command in the log. This is the only
>>> one for which meson generates a 'meson --unpickle' command instead of
>>> a cp command.
>>
>> Yeah, I wasn't expecting it to use this method of executing the
>> command line (storing it in a pickle and then using a python wrapper
>> to execute it) to be used except on Windows, so I'll have to take a
>> more detailed look at why that's happening.
>
> Thanks. FWIW, the recipe for building docs/Reference.html translates to
>
> /usr/bin/env \
> cp ../docs/Reference-static.html docs/Reference.html \
> && ../docs/tools/xml_insert.sh docs/Reference.html TOC ../docs/toc \
> && ../docs/tools/xml_insert.sh \
> docs/Reference.html BablBase docs/index.html.tmp
>
> This succeeds when run manually in the build directory. So something
> must have gone wrong in the pickling/unpickling process.
patching
/usr/lib/python3.6/site-packages/mesonbuild/scripts/meson_exe.py
something like this might shed some light:
--- meson_exe.py.bak 2020-05-21 15:01:19.187046500 +0100
+++ meson_exe.py 2020-05-21 15:09:29.485915300 +0100
@@ -57,6 +57,8 @@
['Z:' + p for p in exe.extra_paths] +
child_env.get('WINEPATH', '').split(';')
)
+ print(cmd_args)
+
p = subprocess.Popen(cmd_args, env=child_env, cwd=exe.workdir,
close_fds=False,
stdout=subprocess.PIPE,
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