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GCC and Clang have a -frandom-seed compiler option. The idea is to improve reproducibility by allowing the build system to specify random seeds for symbols that are randomly generated by the compiler.
ccache should ignore -frandom-seed in compiler options when looking for cache hits. Currently two compiler invocation command lines that are strictly identical except for the random seed will
The original reason for that is purely technical - it is required to call unshare(CLONE_NEWUSER) in the main thread of a program. Since cachepot-dist is multi-threaded and the build is executed on a new thread, we used a hack in which we fork() and call unshare in the forked child (fork() forks the calling thread into a main thread of a forked child process).
GCC and Clang have a
-frandom-seedcompiler option. The idea is to improve reproducibility by allowing the build system to specify random seeds for symbols that are randomly generated by the compiler.ccache should ignore
-frandom-seedin compiler options when looking for cache hits. Currently two compiler invocation command lines that are strictly identical except for the random seed will