Author Topic: compiling a 32bit program using 64bit mingw  (Read 267 times)

Offline beno

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compiling a 32bit program using 64bit mingw
« on: May 03, 2020, 09:05:42 am »
Hello Peeps,

I am new to this platform, 20.3. I am trying to compile a 32bit program. However, i hit a snag even though i have selected -m32 option. Following is the screen shot of the error. Can any1 enlighten me?

Please note that i can compile the program in 64bit format.

Rgrds,
Beno

Offline stahta01

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Re: compiling a 32bit program using 64bit mingw
« Reply #1 on: May 03, 2020, 10:05:46 am »
Most 64 bit MinGW GCC compilers are missing parts of the needed 32 bit folders and files.
Without those it is hard to build any 32 bit apps that need 32 bit libraries in the linking step.

Edit: http://wiki.codeblocks.org/index.php?title=FAQ-Compiling_%28general%29#Q:_How_do_I_report_a_compilation_problem_on_the_forums.3F

Tim S.
« Last Edit: May 03, 2020, 10:10:41 am by stahta01 »
C Programmer working to learn more about C++ and Git.
On Windows 7 64 bit and Windows 10 32 bit.
On Debian Stretch, compiling CB Trunk against wxWidgets 3.0.
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When in doubt, read the CB WiKi FAQ. http://wiki.codeblocks.org

Offline beno

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Re: compiling a 32bit program using 64bit mingw
« Reply #2 on: May 06, 2020, 12:19:39 am »
Name             : Code::Blocks
Version          : 20.03-r11983
SDK Version      : 2.0.0
Scintilla Version: 3.7.5
Author           : The Code::Blocks Team
E-mail           : [email protected]
Website          : http://www.codeblocks.org

wxWidgets Library (wxMSW port)
Version 3.1.3 (Unicode: wchar_t, debug level: 1),
compiled at Nov  1 2019 18:53:26

Operating system : Windows 7 Professional SP1
System Type: 64-bit Operating system

I am trying to compile a program using -m32 option.

Build log
Code: [Select]
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libmingw32.a when searching for -lmingw32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libmingw32.a when searching for -lmingw32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libmingw32.a when searching for -lmingw32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lmingw32
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C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libmoldname.a when searching for -lmoldname
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C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lmingwex
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C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lmsvcrt
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C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libpthread.a when searching for -lpthread
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lpthread
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libadvapi32.a when searching for -ladvapi32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libadvapi32.a when searching for -ladvapi32
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C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -ladvapi32
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C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libmingwex.a when searching for -lmingwex
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libmingwex.a when searching for -lmingwex
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lmingwex
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libmsvcrt.a when searching for -lmsvcrt
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libmsvcrt.a when searching for -lmsvcrt
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libmsvcrt.a when searching for -lmsvcrt
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lmsvcrt
collect2.exe: error: ld returned 1 exit status



« Last Edit: May 06, 2020, 12:22:54 am by beno »

Offline stahta01

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Re: compiling a 32bit program using 64bit mingw
« Reply #3 on: May 06, 2020, 05:37:16 am »
And, as stated elsewhere most 64 bit MinGW GCC can not link 32 bit applications because they normally are missing the 32 bit libraries!

AFAIK the Mingw-w64 toolchains are not multilib, you need a complete toolchain for each architecture. I assume the package contains only one toolchain, the one CodeBlocks was build itself with, so this would be the 64 bit toolchain which cannot build 32 bit. You need to install the 32 bit toolchain yourself and point CodeBlocks to use that one to build for 32 bit.

Tim S.
« Last Edit: May 06, 2020, 05:54:24 am by stahta01 »
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