install 32-bit dev libs on x86_64 system

[forum.query]

Before migrating to F11, I was using F9 - cross-compilation on my Opteron box for both 32- and 64-bit was trivial, since all the 32- and 64-bit libs were installed (such that I could simply add the -m32 compiler directive and generate a 32-bit executable). However, when I try the same 32-bit compilations under F11, doesn't work. Some of the error messages tipped me off that many of the 32-bit versions of various development (shared) libs weren't available (a comparison of the contents of /usr/lib64 and /usr/lib show *lots* of differences.

I fired up yum, assuming I could simply install the i586 versions of same, but in many instances, they're not available.

I must be missing something obvious.

Thanks in advance.

[Thebinaryman]

They're i686, try installing PackageNameHere.i686, I believe most, if not all are i686 builds, not i586. I needed to install many i686 packages (duplicates of x86_64 packages) to ensure compatibility with 32-bit software.

[DhirajSharma]

I have seen many posts on this problem. I have finally found a solution, which is outlined below:

I have Fedora 12 x86_64 version on Core I7 CPU.

Wrote a simple "hello world" program and compiled it using "gcc -m32 ...". Could not compile. Went through many trials and errors and discovered that the following cured the problems:

yum install glibc.i686 # For the basic libs.

yum install glibc-devel.i686 # For stubs.

yum install compat-libstdc++-33-3.2.3-68.i686 # For compatibility of 32 bits on 64 bit CPU.
yum install compat-libstdc++-296-2.96-143.i686

The programs compiles and runs OK. Hope the above helps.
Cheers!