[FFmpeg-cvslog] doc: explain __STDC_CONSTANT_MACROS in C++

[Luca Barbato]

ffmpeg | branch: master | Luca Barbato <lu_zero at gentoo.org> | Sat Sep 10 10:23:50 2011 -0400| [d162994a81a311a8dd212a50a2d2ad2b088df97f] | committer: Luca Barbato

doc: explain __STDC_CONSTANT_MACROS in C++

In order to build C++ programs using libav you need
-D__STDC_CONSTANT_MACROS appened to the CXXFLAGS.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d162994a81a311a8dd212a50a2d2ad2b088df97f
---

 doc/faq.texi |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/doc/faq.texi b/doc/faq.texi
index 42a135c..affe88b 100644
--- a/doc/faq.texi
+++ b/doc/faq.texi
@@ -440,6 +440,11 @@ encompassing your Libav includes using @code{extern "C"}.
 
 See @url{http://www.parashift.com/c++-faq-lite/mixing-c-and-cpp.html#faq-32.3}
 
+ at section I'm using libavutil from within my C++ application but the compiler complains about 'UINT64_C' was not declared in this scope
+
+Libav is a pure C project using C99 math features, in order to enable C++
+to use them you have to append -D__STDC_CONSTANT_MACROS to your CXXFLAGS
+
 @section I have a file in memory / a API different from *open/*read/ libc how do I use it with libavformat?
 
 You have to implement a URLProtocol, see @file{libavformat/file.c} in