On Mon, Sep 22, 2014 at 05:13:24PM +0200, Michael Niedermayer wrote: > On Sun, Sep 21, 2014 at 10:48:01PM +0200, Jörg Krause wrote: > > Some C libraries, eg glibc, uclibc, and musl, uses feature test macros > > to expose definitions conforming to the standards ISO C, POSIX and > > extensions. According to which feature test macros are defined by the > > user or the compiler, a header file, eg <features.h>, used by these > > libraries internally defines various other macros. > > > > glibc and uclibc also defines release test macros, eg __GLIBC__ and > > __UCLIBC__ in <features.h>. musl does not have (and does not want) a > > macro __MUSL__. Therefore it is not possible to check for the musl > > library. > > > > However, building FFmpeg with musl needs the feature test macro > > _XOPEN_SOURCE=600 to be defined. > > > > Signed-off-by: Jörg Krause <jkra...@posteo.de> > > --- > > Changes v2 -> v3: > > - set _XOPEN_SOURCE as default in case no C library can be detected > > > > Changes v1 -> v2: > > - do not set _XOPEN_SOURCE twice for glibc and uclibc > > --- > > configure | 3 +++ > > 1 file changed, 3 insertions(+) > > patch reverted > it broke netbsd and macosx at least > see > http://fate.ffmpeg.org/log.cgi?time=20140922033546&log=compile&slot=i386-darwin-gcc-4.7
heres the stuff causing the problem from teh netbsd headers:
/usr/include/sys/featuretest.h
...
#if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
#define _POSIX_C_SOURCE 1L
#endif
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
!defined(_XOPEN_SOURCE) && !defined(_NETBSD_SOURCE)
#define _NETBSD_SOURCE 1
#endif
...
/usr/include/arpa/inet.h
...
#if defined(_NETBSD_SOURCE)
int inet_aton(const char *, struct in_addr *);
char * inet_neta(u_long, char *, size_t);
char *inet_net_ntop(int, const void *, int, char *, size_t);
int inet_net_pton(int, const char *, void *, size_t);
char *inet_cidr_ntop(int, const void *, int, char *, size_t);
int inet_cidr_pton(int, const char *, void *, int *);
u_int inet_nsap_addr(const char *, u_char *, int);
char *inet_nsap_ntoa(int, const u_char *, char *);
#endif
...
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Everything should be made as simple as possible, but not simpler.
-- Albert Einstein
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