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Zbigniew Jędrzejewski-Szmek
f322f0e6d2
build-sys: fix appending of CFLAGS and define __SANE_USERSPACE_TYPES__
It's pointless to call AC_SUBST more than once on the same variable. Because of all the copypasta, we were mixing CLFAGS and LDFLAGS. … and the assertion in previous commit was wrong. PPC64 is a special snowflake. __SANE_USERSPACE_TYPES__ is needed on PPC64 to make __u64 be llu, instead of lu. Considering that both lu and llu are 64 bits, there's nothing sane about this, maybe the flag should be called __INSANE_USERSPACE_TYPES__ instead. Sane or not, this makes ppc64 kernel headers behave consistent with other architectures. With this flag, no warnings are emitted at -O0 level.
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