feature_tests.h: introduce __ISO_C_VISIBLE macro, borrowed from BSDs
commit4e3019ef321d85cbacb6d57b1e85b729462286e0
authorLauri Tirkkonen <lotheac@iki.fi>
Tue, 1 Jan 2019 21:43:36 +0000 (1 23:43 +0200)
committerLauri Tirkkonen <lotheac@iki.fi>
Tue, 1 Jan 2019 21:43:36 +0000 (1 23:43 +0200)
tree8f6855097bc2a3159b6d2c54ca67280c91762fb5
parent1f6b37a3cb549d4a13c66334ff5e01626f97b88b
feature_tests.h: introduce __ISO_C_VISIBLE macro, borrowed from BSDs

the intention is to be able to check "#if __ISO_C_VISIBLE >= 1999" in
other header files instead of the varyingly horrific ifdef mess that we
currently have everywhere. no intended functional change in this commit.
include/sys/feature_tests.h