[Mingwbuilds-users] problem with compiling wxWidgets 3.0 with x64 seh and sjlj (posix)

[Erika B. <ben...@gm...>]

This is both with and without using the multithreading options on
mingw-make32.

It is with this call executed from the build\msw subdirectory of the
wxWidgets installation folder:

mingw32-make -f makefile.gcc -j4 MONOLITHIC=0 SHELL=CMD.exe BUILD=debug
UNICODE=1 SHARED=0 2>deberr.txt

Though BUILD=release compiles and links all the libraries just fine,
BUILD=debug (like above) produces a linker error:

ar: gcc_mswud\corelib_ipwin.o: No such file or directory
mingw32-make: *** [..\..\lib\gcc_lib\libwxmsw30ud_core.a] Error 1
mingw32-make: *** Waiting for unfinished jobs....

This is most bizarre, because makefile.gcc does not list an object file
named "corelib_ipwin.o" to be linked into the wxmswu_core library.  It
does, however, list an object file named "corelib_tipwin.o" to be linked
into the wxmsu_core library and that file does exist in both the Release
and Debug compiles.  For some reason, in BUILD=release, the 't' is not
removed, but in BUILD=debug, the 't' is removed, producing an invalid
filename.

(Note, this also happens when multithreading in mingw32-make is not used.)

Could this be an issue with mingw32_make or the linker?

Reproducing the error:

In Windows 8.1 x64, install mingw-builds 64-bit (either seh or sjlj in
posix) and set the PATH variable to its bin folder.  Install wxWidgets
3.0.  In "[wxWidgets installation dir]\lib", if it does not already exist,
create a sub-folder "gcc_lib"; in that sub-folder create the sub-folder
"mswud" and in that sub-folder create "wx" ("[wxWidgets installation
dir]\lib\gcc_lib\mswud\wx]" is hereafter called "[dest]").  Copy the header
file "[wxWidgets installation dir]\include\wx\msw\setup.h" to "[dest]".

Open up the Command Prompt and CD to "[wxWidgets installation
dir]\build\msw" and then run the following command:

mingw32-make -f makefile.gcc -j4 MONOLITHIC=0 SHELL=CMD.exe BUILD=debug
UNICODE=1 SHARED=0 2>deberr.txt

Open up deberr.txt to see the error message (along with some warnings),
which for me is:

ar: gcc_mswud\corelib_ipwin.o: No such file or directory
mingw32-make: *** [..\..\lib\gcc_lib\libwxmsw30ud_core.a] Error 1
mingw32-make: *** Waiting for unfinished jobs....

To do the release build, create in "[wxWidgets installation
dir]\lib\gcc_lib" sub-folder and in that sub-folder create the path
"mswu\wx" and into "[wxWidgets installation dir]\lib\gcc_lib\mswu\wx" copy
the same setup.h file as you had in "[dest]".

Then open up the command prompt and CD to "[wxWidgets installation
dir]\build\msw" and then run the following command:

mingw32-make -f makefile.gcc -j4 MONOLITHIC=0 SHELL=CMD.exe BUILD=release
UNICODE=1 SHARED=0 2>relerr.txt

This build was successful for me and relerr.txt should only contain
warnings.

Is anyone else able to reproduce this, either partially or wholly, and if
so what are the results?  Is there an issue with mingw32-make or the linker
that is causing this problem or is it perhaps the way the makefile was
built?

Anyway, I love your implementation's support of GCC 4.8.1 and therefore all
of C++11.  Keep up the good work!

Thank you,
Erika Butler