[Interest] Linking issues with Angle and Qt 5.12.x

[Federico Buti]

Hi all.

Maybe I'm wrong - that's not exactly my cup of tea here - but I've noticed
something that feels off to me.
The def file
<https://code.qt.io/cgit/qt/qtbase.git/tree/src/3rdparty/angle/src/libGLESv2/libGLESv2_mingw32.def?h=5.9.8>
included in Qt 5.9.x for the exported functions seems to correctly match
the undefined references that I reported in the original email. Things like
"glBindTexture at 8" or  "glDeleteTextures at 8" are indeed there and there is no
undefined reference. Instead, the corresponding file
<https://code.qt.io/cgit/qt/qtbase.git/tree/src/3rdparty/angle/src/libGLESv2/libGLESv2d_mingw32.def?h=5.12.3>
in Qt 5.12.x seems to export different names and it matches exactly the non
ming32
<https://code.qt.io/cgit/qt/qtbase.git/tree/src/3rdparty/angle/src/libGLESv2/libGLESv2d.def?h=5.12.3>
 one.

Is that correct?

Thanks,
F.


On Mon, 27 May 2019 at 17:12, Federico Buti <fed.buti at gmail.com> wrote:

> An update.
>
> We used chroot from Archlinux and repos which provides a patched ANGLE, as
> seen here
> <https://github.com/edubart/archlibs/blob/master/mingw-w64/mingw-w64-angleproject/angleproject-fix-mingw-compatibility.patch#L51>, and
> it worked like a charm. We were able to compile qnanopainter and deploy it
> via qtwindeploy to a Windows host. Not sure if this rings some bells but
> just thought it was worth mentioning.
>
> Regards,
> F.
>
>
> On Mon, 27 May 2019 at 14:08, Federico Buti <fed.buti at gmail.com> wrote:
>
>> Hi Vadim,
>>
>> Thanks for the reply.
>> No, quite sure we are not mixing packages in MXE. Compilation is forced
>> for 32 bit target only. On native Windows we are using plain Qt 5.12.x from
>> qt.io so there everything should be correctly aligned too.
>> F.
>>
>>
>> On Mon, 27 May 2019 at 13:11, Vadim Peretokin <vperetokin at gmail.com>
>> wrote:
>>
>>> Are you mixing 64bit and 32bit libraries by accident during linking? I
>>> had similar messages in that scenario.
>>>
>>> On Mon, May 27, 2019 at 12:57 PM Oliver Wolff <Oliver.Wolff at qt.io>
>>> wrote:
>>>
>>>> Hi Frederico,
>>>>
>>>> I am not aware of an issue with ANGLE when using MinGW. Can you create
>>>> a
>>>> bug report on http://bugreports.qt.io/ ,attach a minimal example, and
>>>> assign it to me so that it does not get lost?
>>>>
>>>> Olli
>>>>
>>>> On 25/05/2019 17:47, Federico Buti wrote:
>>>> > Hi all.
>>>> >
>>>> > We are facing a quite strange behaviour with qnanopainter
>>>> > <https://github.com/QUItCoding/qnanopainter>.
>>>> > Building/running the library and the examples works smoothly on Qt
>>>> 5.9.8
>>>> > and no issue is found. I guess everything was fixed there, see for
>>>> > instance here
>>>> > <https://github.com/QUItCoding/qnanopainter/issues/16#issue-235192684
>>>> >.
>>>> >
>>>> > Building the code on 5.12.x results in a similar linker issue as
>>>> > depicted in the last link. In particular we have a series of
>>>> undefined
>>>> > references as shown below:
>>>> >
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x12b):
>>>>
>>>> > undefined reference to `_imp__glDeleteTextures at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1b4):
>>>>
>>>> > undefined reference to `glDeleteShader at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1d5):
>>>>
>>>> > undefined reference to `glDeleteBuffers at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1e5):
>>>>
>>>> > undefined reference to `glDeleteShader at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1f5):
>>>>
>>>> > undefined reference to `glDeleteProgram at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x988):
>>>>
>>>> > undefined reference to `_imp__glBindTexture at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x9a0):
>>>>
>>>> > undefined reference to `_imp__glPixelStorei at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x9fc):
>>>>
>>>> > undefined reference to `_imp__glTexSubImage2D at 36'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0xa43):
>>>>
>>>> > undefined reference to `_imp__glBindTexture at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1361):
>>>>
>>>> > undefined reference to `_imp__glDeleteTextures at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1388):
>>>>
>>>> > undefined reference to `_imp__glGetError at 0'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1407):
>>>>
>>>> > undefined reference to `_imp__glGenTextures at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x143a):
>>>>
>>>> > undefined reference to `_imp__glBindTexture at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1442):
>>>>
>>>> > undefined reference to `_imp__glPixelStorei at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x14ae):
>>>>
>>>> > undefined reference to `_imp__glTexImage2D at 36'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x14d7):
>>>>
>>>> > undefined reference to `_imp__glTexParameteri at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1638):
>>>>
>>>> > undefined reference to `_imp__glBindTexture at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x16b9):
>>>>
>>>> > undefined reference to `glGenerateMipmap at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x16fa):
>>>>
>>>> > undefined reference to `_imp__glTexImage2D at 36'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x171a):
>>>>
>>>> > undefined reference to `_imp__glTexParameteri at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x17e0):
>>>>
>>>> > undefined reference to `glUniform4fv at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1828):
>>>>
>>>> > undefined reference to `_imp__glBindTexture at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x185f):
>>>>
>>>> > undefined reference to `_imp__glBindTexture at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x18bb):
>>>>
>>>> > undefined reference to `glGetProgramInfoLog at 16'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x192e):
>>>>
>>>> > undefined reference to `glGetShaderInfoLog at 16'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x19c9):
>>>>
>>>> > undefined reference to `glCreateProgram at 0'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x19d7):
>>>>
>>>> > undefined reference to `glCreateShader at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x19e8):
>>>>
>>>> > undefined reference to `glCreateShader at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1a19):
>>>>
>>>> > undefined reference to `glShaderSource at 16'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1a44):
>>>>
>>>> > undefined reference to `glShaderSource at 16'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1a4f):
>>>>
>>>> > undefined reference to `glCompileShader at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1a6a):
>>>>
>>>> > undefined reference to `glGetShaderiv at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1a94):
>>>>
>>>> > undefined reference to `glCompileShader at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1aaf):
>>>>
>>>> > undefined reference to `glGetShaderiv at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1adb):
>>>>
>>>> > undefined reference to `glAttachShader at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1aea):
>>>>
>>>> > undefined reference to `glAttachShader at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1b05):
>>>>
>>>> > undefined reference to `glBindAttribLocation at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1b20):
>>>>
>>>> > undefined reference to `glBindAttribLocation at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1b2b):
>>>>
>>>> > undefined reference to `glLinkProgram at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1b46):
>>>>
>>>> > undefined reference to `glGetProgramiv at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1bd9):
>>>>
>>>> > undefined reference to `glGetUniformLocation at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1bf1):
>>>>
>>>> > undefined reference to `glGetUniformLocation at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1c09):
>>>>
>>>> > undefined reference to `glGetUniformLocation at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1c22):
>>>>
>>>> > undefined reference to `glGenBuffers at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1c38):
>>>>
>>>> > undefined reference to `_imp__glFinish at 0'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1d14):
>>>>
>>>> > undefined reference to `_imp__glStencilFunc at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1d5f):
>>>>
>>>> > undefined reference to `glUseProgram at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1d64):
>>>>
>>>> > undefined reference to `_imp__glEnable at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1d86):
>>>>
>>>> > undefined reference to `_imp__glCullFace at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1d96):
>>>>
>>>> > undefined reference to `_imp__glFrontFace at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1da7):
>>>>
>>>> > undefined reference to `_imp__glDisable at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1dca):
>>>>
>>>> > undefined reference to `_imp__glColorMask at 16'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1df7):
>>>>
>>>> > undefined reference to `_imp__glStencilMask at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1e0c):
>>>>
>>>> > undefined reference to `_imp__glStencilOp at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1e4c):
>>>>
>>>> > undefined reference to `_imp__glStencilFunc at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1e5b):
>>>>
>>>> > undefined reference to `glActiveTexture at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1e60):
>>>>
>>>> > undefined reference to `_imp__glBindTexture at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1edf):
>>>>
>>>> > undefined reference to `glBindBuffer at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1f07):
>>>>
>>>> > undefined reference to `glBufferData at 16'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1f16):
>>>>
>>>> > undefined reference to `glEnableVertexAttribArray at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1f25):
>>>>
>>>> > undefined reference to `glEnableVertexAttribArray at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1f5c):
>>>>
>>>> > undefined reference to `glVertexAttribPointer at 24'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1f93):
>>>>
>>>> > undefined reference to `glVertexAttribPointer at 24'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1fa9):
>>>>
>>>> > undefined reference to `glUniform1i at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1fc6):
>>>>
>>>> > undefined reference to `glUniform4fv at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x1fce):
>>>>
>>>> > undefined reference to `_imp__glDrawArrays at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x2085):
>>>>
>>>> > undefined reference to `glBlendFuncSeparate at 16'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x2141):
>>>>
>>>> > undefined reference to `glStencilOpSeparate at 16'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x2168):
>>>>
>>>> > undefined reference to `glStencilOpSeparate at 16'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x217f):
>>>>
>>>> > undefined reference to `_imp__glDrawArrays at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x2289):
>>>>
>>>> > undefined reference to `glDisableVertexAttribArray at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x2298):
>>>>
>>>> > undefined reference to `glDisableVertexAttribArray at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x22bd):
>>>>
>>>> > undefined reference to `glBindBuffer at 8'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x22cc):
>>>>
>>>> > undefined reference to `glUseProgram at 4'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x2374):
>>>>
>>>> > undefined reference to `_imp__glDrawArrays at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x249e):
>>>>
>>>> > undefined reference to `_imp__glDrawArrays at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x2532):
>>>>
>>>> > undefined reference to `_imp__glDrawArrays at 12'
>>>> >
>>>> libqnanopainter.a(qnanobackendgles2.cpp.o):qnanobackendgles2.cpp:(.text+0x2843):
>>>>
>>>> > undefined reference to `_imp__glDrawArrays at 12'
>>>> >
>>>> > When we substituted the "liblibGLESv2.a" from Qt 5.12 with the one
>>>> from
>>>> > 5.9 - just to do a wild test - compilation succeeded but then we had
>>>> a
>>>> > runtime failure which was totally expected.
>>>> >
>>>> > The very same series of undefined references are also spotted while
>>>> > cross-compiling with MXE and a patched Qt version to have dynamic
>>>> > selection of the GL backend.
>>>> >
>>>> > What is exactly happening here? How can we proceed? What's the best
>>>> way
>>>> > to use angle when cross-compiling Qt, e.g. with MXE?
>>>> >
>>>> > Thanks in advance,
>>>> > F.
>>>> >
>>>> >
>>>> > _______________________________________________
>>>> > Interest mailing list
>>>> > Interest at qt-project.org
>>>> > https://lists.qt-project.org/listinfo/interest
>>>> >
>>>> _______________________________________________
>>>> Interest mailing list
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>>>> https://lists.qt-project.org/listinfo/interest
>>>>
>>> _______________________________________________
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>>>
>>
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