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GCC Build Error on 32bit RadHat?

+2 votes
137 views

I am building gcc 4.8.1 in a Red Hat 6.4 64 bit machine. I am building gnat first and it is build as 32 bit i686 architecture. I used gnat-gpl-2013-i686-pc-linux-gnu-bin for gnat and it created a 32 bit gcc in the directory, I set the path to that so, gcc is now gcc 4.7.4 from /gnat/bin/gcc. When I checked that is 32 bit gcc.

I used this configuration

./gcc-4.8.1/configure --disable-multilib --disable-bootstrap
--disable-install-libiberty --with-system-zlib --enable-clocale=gnu
--enable-shared --enable-lto --enable-threads=posix --enable-__cxa_atexit
--enable-languages=c,c++,fortran,java,ada --prefix=/usr/local/ CFLAGS="-pipe
-march=native -mtune=native -g -O2" CXXFLAGS="-pipe -march=native
-mtune=native -g -O2"

I was able to build the compiler with this configuration and arch is x86_64.

when I tried to compile a file with -m32 option it didn't work and got the error message

crtbegin.o: could not read symbols: File in wrong format.
Collect2: kd returned 1 exit status
posted Feb 20, 2014 by Deepak Dasgupta

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1 Answer

+1 vote

On x86_64, the --disable-multilib option means build a compiler without 32-bit support. Which may be the cause of the problem.

answer Feb 20, 2014 by Majula Joshi
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+1 vote

I need some help in understanding why my GCC didn't consider this an issue. I have a function that was constructing a path to a daemon program based on the location of the shared object file where this code is. Something similar to this:

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My comments above the final return statement illustrate what my question is about. Why wasn't this a problem? There was no return statement and yet, the code compiled fine. I'm using GCC 4.4.4 on CentOS 6.2. Is this just a problem with the 4.4.4 compiler that was fixed? I'm betting there's some subtlety in C++ here that I'm not yet aware of and I'd like to be schooled.

+3 votes

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Please help?

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