#11538: Not possible to compile ffmpeg for 32-bit on mingw32 -------------------------------------+------------------------------------- Reporter: | Type: defect AndersIgelstrom | Status: new | Priority: important Component: build | Version: git- system | master Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- I am building ffmpeg/x264 on Windows 10. Have built 64-bit successfully. The 32-bit configuration gives "Host Compiler lacks C11 support" Gcc version is 14.2.0 and should have c11 from wah This is how I set up the environment to compile. Installed msys2-x86_64-20250221.exe In the UCRT64 command window: - pacman -S git - pacman -S mingw-w64-i686-toolchain - pacman -S mingw-w64-x86_64-toolchain - pacman -S base-devel - pacman -S yasm - pacman -S nasm - mkdir /src - cd /src In mingw32: - git clone http://git.videolan.org/git/x264.git - git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg - cd x264 - make clean - ./configure --prefix=/mingw32 --enable-shared --disable-cli --disable-gpl --enable-lto --host=i686-w64-mingw32 - make -j8 - make install - cd ../ffmpeg - As we have a license I edit ./configure: move libx264 from EXTERNAL_LIBRARY_GPL_LIST to EXTERNAL_LIBRARY_LIST - make clean ./configure --prefix=/mingw32 --enable-shared --disable-static --disable-programs --disable-lzma --disable-doc --disable-sdl2 --enable-libx264 --disable-debug --host=i686-w64-mingw32 Error: "Host Compiler lacks C11 support" ffmpeg version 7.1.1.1 and also from git March 15 built on Windows 10 -- Ticket URL: <https://trac.ffmpeg.org/ticket/11538> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker