[pacman-dev] gnu89-inline

Xavier Chantry chantry.xavier at gmail.com
Sat Apr 2 13:17:50 EDT 2011

I am just curious, what do we need this flag for ?

I only found this :
GCC implements three different semantics of declaring a function
inline. One is available with -std=gnu89 or -fgnu89-inline or when
gnu_inline attribute is present on all inline declarations, another
when -std=c99, -std=c1x, -std=gnu99 or -std=gnu1x (without
-fgnu89-inline), and the third is used when compiling C++.

There is a small annoyance with clang, the configure check believes
fgnu89-inline is supported because clang only emits a warning when
that flag is specified :
checking for -fgnu89-inline... yes

So every libalpm file triggers this warning when building :
clang: warning: argument unused during compilation: '-fgnu89-inline'

Anyway it looks like we could use -std=gnu89 alternatively ?
... which brings to another topic that was brought recently on the ML
: I tried to build with that and got a lot of warnings :)
../../lib/libalpm/alpm.h:396:29: warning: commas at the end of
enumerator lists are a C99-specific feature [-pedantic]
pacman.c:1201:8: warning: ISO C90 forbids mixing declarations and code
util.c:797:8: warning: variable declaration in for loop is a
C99-specific feature [-pedantic]

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