[FFmpeg-trac] #7479(build system:new): MSYS2/MinGW64 install build for libavdevice fails with GCC 8.2.0

[FFmpeg]

#7479: MSYS2/MinGW64 install build for libavdevice fails with GCC 8.2.0
-------------------------------------+-------------------------------------
             Reporter:  LigH         |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  build
              Version:  git-master   |  system
             Keywords:  MSYS2        |               Resolution:
  MinGW64 GCC8 avdevice              |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by LigH):

 Second run of `$ make V=1`:

 {{{
 gcc -I. -I/build/ffmpeg-git/ -D_FORTIFY_SOURCE=2
 -D__USE_MINGW_ANSI_STDIO=1 -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64
 -D_LARGEFILE_SOURCE -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
 -D__printf__=__gnu_printf__ -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
 -DPIC -I/build/ffmpeg-git/compat/atomics/dummy -DZLIB_CONST
 -DHAVE_AV_CONFIG_H -DBUILDING_avdevice -mthreads -mtune=generic -O2 -pipe
 -std=c11 -fomit-frame-pointer  -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 -Wno-unused-const-variable -Wno-bool-
 operation -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
 -fdiagnostics-color=auto -Wno-maybe-uninitialized  -MMD -MF
 libavdevice/alldevices.d -MT libavdevice/alldevices.o -c -o
 libavdevice/alldevices.o /build/ffmpeg-git/libavdevice/alldevices.c
 In file included from H:/development/media-autobuild_suite-
 master/msys64/mingw64/lib/gcc/x86_64-w64-mingw32/8.2.0/include/stddef.h:1,
                  from H:/development/media-autobuild_suite-
 master/msys64/mingw64/x86_64-w64-mingw32/include/inttypes.h:14,
                  from H:/development/media-autobuild_suite-master/build
 /ffmpeg-git/libavutil/common.h:34,
                  from H:/development/media-autobuild_suite-master/build
 /ffmpeg-git/libavutil/avutil.h:296,
                  from H:/development/media-autobuild_suite-master/build
 /ffmpeg-git/libavutil/samplefmt.h:24,
                  from H:/development/media-autobuild_suite-master/build
 /ffmpeg-git/libavcodec/avcodec.h:31,
                  from H:/development/media-autobuild_suite-master/build
 /ffmpeg-git/libavformat/avformat.h:319,
                  from H:/development/media-autobuild_suite-master/build
 /ffmpeg-git/libavformat/internal.h:27,
                  from H:/development/media-autobuild_suite-master/build
 /ffmpeg-git/libavdevice/alldevices.c:23:
 ./config.h:17:19: error: expected identifier or '(' before 'void'
  #define getenv(x) NULL
                    ^~~~
 ./config.h:17:19: error: expected ')' before numeric constant
  #define getenv(x) NULL
                    ^~~~
 make: *** [/build/ffmpeg-git/ffbuild/common.mak:60:
 libavdevice/alldevices.o] Error 1
 }}}


 ''(but I can't guarantee a valid result because I usually do not use the
 shell interactively, instead only in a batch which may have prepared
 details not available in an interactive shell)''

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7479#comment:3>
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