Commit 29c3d42b authored by Víctor Paesa's avatar Víctor Paesa
Browse files

Leverage MinGW's llrint() in Cygwin compilations.

Originally committed as revision 10878 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent e76e2bbc
...@@ -530,27 +530,36 @@ Then you can easily test FFmpeg with Wine ...@@ -530,27 +530,36 @@ Then you can easily test FFmpeg with Wine
@subsection Compilation under Cygwin @subsection Compilation under Cygwin
Cygwin works very much like Unix. The main issue with Cygwin is that newlib, its C library, does not
contain llrint(). However, it is possible to leverage the
implementation in MinGW.
Just install your Cygwin with all the "Base" packages, plus the Just install your Cygwin with all the "Base" packages, plus the
following "Devel" ones: following "Devel" ones:
@example @example
binutils, gcc-core, make, subversion binutils, gcc-core, make, subversion, mingw-runtime
@end example @end example
Do not install binutils-20060709-1 (they are buggy on shared builds); Do not install binutils-20060709-1 (they are buggy on shared builds);
use binutils-20050610-1 instead. use binutils-20050610-1 instead.
Then create a small library that just contains llrint():
@example
ar x /usr/lib/mingw/libmingwex.a llrint.o
ar cq /usr/local/lib/libllrint.a llrint.o
@end example
Then run Then run
@example @example
./configure --enable-static --disable-shared ./configure --enable-static --disable-shared --extra-ldflags='-L /usr/local/lib' --extra-libs='-l llrint'
@end example @end example
to make a static build or to make a static build or
@example @example
./configure --enable-shared --disable-static ./configure --enable-shared --disable-static --extra-ldflags='-L /usr/local/lib' --extra-libs='-l llrint'
@end example @end example
to build shared libraries. to build shared libraries.
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