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build: link libatomic if available

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It'll generally exist but be empty on systems that don't need it.
(Some 32bit platforms now need it due to 64bit time_t, and the platform
may not have 64bit atomic ops.)

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
This commit is contained in:
David Lamparter 2024-04-30 11:52:37 +02:00
parent 65c2593a12
commit 342400e7c6
1 changed files with 2 additions and 0 deletions
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2
configure.ac
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@ -1095,6 +1095,8 @@ dnl -------------------------
AC_CHECK_HEADERS([stropts.h sys/ksym.h \
linux/version.h asm/types.h endian.h sys/endian.h])
AC_CHECK_LIB([atomic], [main], [LIBS="$LIBS -latomic"], [], [])
ac_stdatomic_ok=false
AC_DEFINE([FRR_AUTOCONF_ATOMIC], [1], [did autoconf checks for atomic funcs])
AC_CHECK_HEADER([stdatomic.h],[