compile 32-bit dosbox on 64-bit linux? possible? \ VOGONS

compile 32-bit dosbox on 64-bit linux? possible?

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First post, by Duffman

Posted on 2016-09-01, 08:15

Duffman Offline

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I'm trying to compile a 32-bit dosbox on 64-bit linux, but I'm having some trouble compiling

I did these steps

sudo dpkg --add-architecture i386

sudo ./configure --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu

export CFLAGS=-m32
export CXXFLAGS=-m32
export LDFLAGS=-m32

sudo make

it runs into an error here

1core_dyn_x86/decoder.h: In function ‘CacheBlock* CreateCacheBlock(CodePageHandler*, PhysPt, Bitu)’:
2core_dyn_x86/decoder.h:2009:59: error: cast from ‘CacheBlock*’ to ‘Bit32u {aka unsigned int}’ loses precision [-fpermissive]
3  gen_save_host_direct(&cache.block.running,(Bit32u)decode.block);
4                                                           ^

any help with this?

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Reply 1 of 6, by Qbix

Posted on 2016-09-01, 08:23

Qbix Offline

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remove the sudo from configure and make

The error doesn't make sense, it are casts between 32 bit variables. It guess something still is still 64 bit on your system/compiler.

Water flows down the stream
How to ask questions the smart way!

Reply 2 of 6, by mrau

Posted on 2016-09-01, 08:48

mrau Offline

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go the adventurous way with fpermissive :>

Reply 3 of 6, by Duffman

Posted on 2016-09-01, 08:51

Duffman Offline

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OK, i removed sudo - still got the same error,

so maybe I should i try and use a 32-bit version of make then?

Reply 4 of 6, by gdjacobs

Posted on 2016-09-01, 19:48

gdjacobs Offline

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Dpkg is now configured to allow multi arch, but you still have to install all your 32 bit dependencies. Try something like

1sudo apt-get -a i386 build-dep dosbox

Dosbox from git may benefit from additional dependencies over and above 0.74.

All hail the Great Capacitor Brand Finder

Reply 5 of 6, by Duffman

Posted on 2016-09-02, 12:38

Duffman Offline

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I conceded defeat and ended up compiling it in a 32-bit linux environment to have it compile without error,

but at the moment, if i want to run it under 64-bit linux I have to bring all of it's dependencies in a folder and point to it,

can i get some help to compile dosbox 32-bit statically, so i don't have to carry all it's dependencies in a folder with it?

Reply 6 of 6, by wjp

Posted on 2016-09-08, 15:21

wjp Offline

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Using CFLAGS, CXXFLAGS, LDFLAGS for the -m32 option tends to be rather fragile. The following works fine for me:

1CC="cc -m32" CXX="c++ -m32" ./configure --host=i686-pc-linux-gnu

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