Error while compiling wxWidgets with TDM-GCC

Question

I've been trying to compile wxWidgets for a while now, I've been using TDM-GCC and have been following the guide here with no such luck. The last few lines of my mingw32-make -f makefile.gcc SHARED=1 UNICODE=1 BUILD=release MONOLITHIC=1 is

../../src/msw/thread.cpp: In member function 'void wxThread::Exit(wxThread::Exit
Code)':
../../src/msw/thread.cpp:1165:28: error: cast from 'wxThread::ExitCode {aka void
*}' to 'unsigned int' loses precision [-fpermissive]
     _endthreadex((unsigned)status);

makefile.gcc:4957: recipe for target 'gcc_mswudll\monodll_thread.o' failed
mingw32-make: *** [gcc_mswudll\monodll_thread.o] Error 1

Anyone got any ideas? Please help, I'm truly baffled.

That's not enough information, you omitted the line(s) with the actual error(s). — VZ., Oct 17 '13 at 19:07
Downgrade the error to a warning. See this answer http://stackoverflow.com/a/8843848/16582 — ravenspoint, Oct 18 '13 at 16:57
Sorry, I must sound **really** stupid, but how do I get `mingw32-make` to pass this option to GCC? — Python Kid, Oct 18 '13 at 17:07

score 2 · Accepted Answer · edited May 23 '17 at 12:28

2

With the help of @ravenspoint, and some googling, I found this, which mentioned passing the variable CXXFLAGS to pass arguments to g++ (and for gcc, use CFLAGS), then from @ravenspoint's answer I added CXXFLAGS+=-fpermissive to my mingw32-make -f makefile.gcc SHARED=1 UNICODE=1 BUILD=release MONOLITHIC=1, to pass -fpermissive to g++.

edited May 23 '17 at 12:28

Community

1
1

answered Oct 18 '13 at 18:33

Python Kid

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2
7
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score 0 · Answer 2 · edited Apr 28 '15 at 16:19

{aka void*} to unsigned int loses precision [-fpermissive]

That occurs when it expects 32 bit and gets a 64 bit, usually a problem in compiling code meant to be 32 bit in the TDM default -m64 bit mode.

For void* to lose precision, it must be a 64 bit variable, and unsigned int must be 32.

If you downgrade the variable by disabling the warning and run it on 64 bit machine, you could get a pointer error crash while running program.

Error while compiling wxWidgets with TDM-GCC

2 Answers2