i686-w64-mingw32-gcc -I. -I/home/kyle/software/ffmpeg/source/ffmpeg-git-testing/ -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1 -D__printf__=__gnu_printf__ -DHAVE_AV_CONFIG_H -I/home/kyle/software/ffmpeg/pkgs/decklink/decklink-10.3.1-win32/include   -std=c99 -fomit-frame-pointer -pthread -g -Wdeclaration-after-statement -Wall -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wwrite-strings -Wtype-limits -Wundef -Wmissing-prototypes -Wno-pointer-to-int-cast -Wstrict-prototypes -Wempty-body -Wno-parentheses -Wno-switch -Wno-format-zero-length -Wno-pointer-sign -O3 -fno-math-errno -fno-signed-zeros -fno-tree-vectorize -Werror=format-security -Werror=implicit-function-declaration -Werror=missing-prototypes -Werror=return-type -Werror=vla -Wformat -Wno-maybe-uninitialized  -MMD -MF libavdevice/vfwcap.d -MT libavdevice/vfwcap.o -c -o libavdevice/vfwcap.o /home/kyle/software/ffmpeg/source/ffmpeg-git-testing/libavdevice/vfwcap.c
In file included from /home/kyle/software/ffmpeg/source/ffmpeg-git-testing/libavformat/internal.h:26:0,
                 from /home/kyle/software/ffmpeg/source/ffmpeg-git-testing/libavdevice/decklink_enc.cpp:29:
/home/kyle/software/ffmpeg/source/ffmpeg-git-testing/libavformat/os_support.h: In function 'int utf8towchar(const char*, wchar_t**)':
/home/kyle/software/ffmpeg/source/ffmpeg-git-testing/libavformat/os_support.h:157:57: error: invalid conversion from 'void*' to 'wchar_t*' [-fpermissive]
     *filename_w = av_mallocz(sizeof(wchar_t) * num_chars);
                                                         ^