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Message-ID: <87wlyd48ft.fsf@gmail.com>
Date: Sat, 11 Apr 2026 12:13:10 -0700
From: Collin Funk <collin.funk1@...il.com>
To: musl@...ts.openwall.com
Cc: Gilles Peskine <gilles.peskine@....com>
Subject: Re: Detecting getrandom() or syscall()
Gilles Peskine <gilles.peskine@....com> writes:
> I agree that something like
> #if __has_function_syscall
> is the way to go! So what macro can we use to test for the presence of
> syscall() on musl or elsewhere?
#include <fcntl.h>
#if (defined __linux__ && defined O_SEARCH && defined O_PATH \
&& O_SEARCH == O_PATH)
# define MUSL true
#else
# define MUSL false
#endif
Collin
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