Build with noexecstack

[wgmitchener]

Glibc 2.41 introduced a breaking change where it won't load .so files flagged with execstack without some extra configuration. The Julia build process includes a line in a makefile that (I think) forces libopenlibm.so to be built without the execstack flag due to this problem. However, the standalone build process for openlibm does not seem to include such a flag.

The libopenlibm4 0.8.1 package on conda-forge is built with execstack, which means Julia won't run in a conda environment on Fedora linux. (Fedora 43 enables SELinux, checks for execstack, and uses glibc 2.42.) I suspect the conda package is built exactly as posted here on github.

Can you add that noexecstack flag to the build process?

[inkydragon]

The libopenlibm4 0.8.1 package on conda-forge is built with execstack

You need to backport e2482c9

We've already fix this issue with:
8d24a24
e2482c9

Openlibm v0.8.4+ works well.

We can either patch each source file written in assembler and send the fixes upstream, or we can be lazy and simply force the package build system to assemble the source files with the GNU as option --noexecstack (but this is highly discouraged).

https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart#How_to_fix_the_stack_.28in_theory.29