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I am using Ubuntu 12.04 64bit and I am getting the following error while compiling a Qt project which needs a 32bit .so file.

error: skipping incompatible /opt/lib/libEposCmd.so when searching for -lEposCmd

I want to compile this project with -m32 option but I don't know where should I insert this option.

Benyamin Jafari
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Farshid616
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  • I changed linux-g++ to linux-g++-32, and add -m32 option to CFLAGS, CXXFLAGS and LFLAGS in make file but The makefile automatically gets changed with every i386 replaced with x86-64. then i got /usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/QtXmlPatterns.so when searching for -lQtXmlPatterns /usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/libQtCore.so when searching for -lQtCore /usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/libpthread.so when searching for -lpthread /usr/bin/ld: skipping incompatible – Farshid616 Mar 03 '14 at 08:44
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    http://stackoverflow.com/questions/1272357 – Michael Tomkins Apr 06 '14 at 22:02

2 Answers2

2

Problem Solved through below instruction:

  • installing g++-multilib, libstdc++.i386, libgcc.i386, glibc-devel.i386, gcc-c++-32bit

  • edite make file and adjust below config:

    cc = add -m32
CFLAGS = add -m32
INCPATH = linux-g++-32
LFLAGS = -m32 -w1, -o1
LIBS = i386-linux-gnu

  • make softlink of 

    /usr/lib/i386-GNU-linux/libQtCore.so.4.1
                    libQtGui.....
                    libQtXmlPattern..
                    libQtXml.....

    to lib .... .so.o then to lib .... .so make clean and compile

Michael Petch
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Farshid616
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0

Use string command to see the values inside the .so file . And check the values

for eg string /opt/lib/libEposCmd.so

XAVIER
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