diff options
| author | Lynne <dev@lynne.ee> | 2024-10-03 15:25:37 +0200 |
|---|---|---|
| committer | Lynne <dev@lynne.ee> | 2024-10-06 01:32:47 +0200 |
| commit | 2f888fb99eef07a259879273bc9999c5e86620ca (patch) | |
| tree | 77bc8050cd4061a1c982165efb9f7c07600deca1 /doc | |
| parent | 73d2cb1c2b2ecac7081782bfd14a4df6051475ff (diff) | |
| download | ffmpeg-2f888fb99eef07a259879273bc9999c5e86620ca.tar.gz | |
configure: drop yasm support
We started defauling to nasm 8 years ago.
We are still compatible with yasm 0.8.0, released in 2009. **15 years ago**.
The time has more than come to remove support for it.
Maintaining compatibility started cutting into writing new code long ago.
We still can't have 2-argument instructions, preprocessor booleans, and all
AVX2 code must still be wrapped in ifdefs. Newly added code often breaks this.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/developer.texi | 2 | ||||
| -rw-r--r-- | doc/optimization.txt | 4 | ||||
| -rw-r--r-- | doc/platform.texi | 4 |
3 files changed, 5 insertions, 5 deletions
diff --git a/doc/developer.texi b/doc/developer.texi index 41b21938ef..ff181abb58 100644 --- a/doc/developer.texi +++ b/doc/developer.texi @@ -825,7 +825,7 @@ filters, bitstream filters, parsers. If its not possible to do that, add an explanation why to your patchset, its ok to not test if theres a reason. @item -If you added YASM code please check that things still work with --disable-yasm. +If you added NASM code please check that things still work with --disable-x86asm. @item Test your code with valgrind and or Address Sanitizer to ensure it's free diff --git a/doc/optimization.txt b/doc/optimization.txt index 3ed29fe38c..40480e4fa9 100644 --- a/doc/optimization.txt +++ b/doc/optimization.txt @@ -188,7 +188,7 @@ Code that depends on data in registries being untouched, should be written as a single __asm__() statement. Ideally, a single function contains only one __asm__() block. -Use external asm (nasm/yasm) or inline asm (__asm__()), do not use intrinsics. +Use external asm (nasm) or inline asm (__asm__()), do not use intrinsics. The latter requires a good optimizing compiler which gcc is not. When debugging a x86 external asm compilation issue, if lost in the macro @@ -199,7 +199,7 @@ actual lines causing issues. Inline asm vs. external asm --------------------------- Both inline asm (__asm__("..") in a .c file, handled by a compiler such as gcc) -and external asm (.s or .asm files, handled by an assembler such as nasm/yasm) +and external asm (.s or .asm files, handled by an assembler such as nasm) are accepted in FFmpeg. Which one to use differs per specific case. - if your code is intended to be inlined in a C function, inline asm is always diff --git a/doc/platform.texi b/doc/platform.texi index 764911d230..d9ee436a9f 100644 --- a/doc/platform.texi +++ b/doc/platform.texi @@ -158,7 +158,7 @@ You will need the following prerequisites: To set up a proper environment in MSYS2, you need to run @code{msys_shell.bat} from the Visual Studio or Intel Compiler command prompt. -Place @code{yasm.exe} somewhere in your @code{PATH}. +Place @code{nasm.exe} somewhere in your @code{PATH}. Next, make sure any other headers and libs you want to use, such as zlib, are located in a spot that the compiler can see. Do so by modifying the @code{LIB} @@ -301,7 +301,7 @@ These library packages are only available from @uref{http://sourceware.org/cygwinports/, Cygwin Ports}: @example -yasm, libSDL-devel, libgsm-devel, libmp3lame-devel, +libSDL-devel, libgsm-devel, libmp3lame-devel, speex-devel, libtheora-devel, libxvidcore-devel @end example |