compilation error on Windows (MSYS2 + mingw-w64

[vtorri]

Error :

C:/Documents/msys2/home/vincent.torri/gitroot_64/AviSynthPlus/avs_core/filters/AviSource/avi_source.cpp:299:1: error: redefinition of 'LRESULT ICDecompressEx(HIC, DWORD, LPBITMAPINFOHEADER, LPVOID, INT, INT, INT, INT, LPBITMAPINFOHEADER, LPVOID, INT, INT, INT, INT)'
  299 | ICDecompressEx(HIC hic,DWORD dwFlags,LPBITMAPINFOHEADER lpbiSrc,LPVOID lpSrc,INT xSrc,INT ySrc,INT dxSrc,INT dySrc,LPBITMAPINFOHEADER lpbiDst,LPVOID lpDst,INT xDst,INT yDst,INT dxDst,INT dyDst)
      | ^~~~~~~~~~~~~~
In file included from C:/Documents/msys2/home/vincent.torri/gitroot_64/AviSynthPlus/avs_core/filters/AviSource/DubSource.h:22,
                 from C:/Documents/msys2/home/vincent.torri/gitroot_64/AviSynthPlus/avs_core/filters/AviSource/AudioSource.h:21,
                 from C:/Documents/msys2/home/vincent.torri/gitroot_64/AviSynthPlus/avs_core/filters/AviSource/avi_source.cpp:40:
C:/Documents/msys2/mingw64/x86_64-w64-mingw32/include/vfw.h:414:31: note: 'LRESULT ICDecompressEx(HIC, DWORD, LPBITMAPINFOHEADER, LPVOID, int, int, int, int, LPBITMAPINFOHEADER, LPVOID, int, int, int, int)' previously defined here
  414 |   __CRT_INLINE LRESULT WINAPI ICDecompressEx(HIC hic,DWORD dwFlags,LPBITMAPINFOHEADER lpbiSrc,LPVOID lpSrc,int xSrc,int ySrc,int dxSrc,int dySrc,LPBITMAPINFOHEADER lpbiDst,LPVOID lpDst,int xDst,int yDst,int dxDst,int dyDst) {
      |                               ^~~~~~~~~~~~~~
C:/Documents/msys2/home/vincent.torri/gitroot_64/AviSynthPlus/avs_core/filters/AviSource/avi_source.cpp:319:1: error: redefinition of 'LRESULT ICDecompressExBegin(HIC, DWORD, LPBITMAPINFOHEADER, LPVOID, INT, INT, INT, INT, LPBITMAPINFOHEADER, LPVOID, INT, INT, INT, INT)'
  319 | ICDecompressExBegin(HIC hic,DWORD dwFlags,LPBITMAPINFOHEADER lpbiSrc,LPVOID lpSrc,INT xSrc,INT ySrc,INT dxSrc,INT dySrc,LPBITMAPINFOHEADER lpbiDst,LPVOID lpDst,INT xDst,INT yDst,INT dxDst,INT dyDst)
      | ^~~~~~~~~~~~~~~~~~~
In file included from C:/Documents/msys2/home/vincent.torri/gitroot_64/AviSynthPlus/avs_core/filters/AviSource/DubSource.h:22,
                 from C:/Documents/msys2/home/vincent.torri/gitroot_64/AviSynthPlus/avs_core/filters/AviSource/AudioSource.h:21,
                 from C:/Documents/msys2/home/vincent.torri/gitroot_64/AviSynthPlus/avs_core/filters/AviSource/avi_source.cpp:40:
C:/Documents/msys2/mingw64/x86_64-w64-mingw32/include/vfw.h:432:31: note: 'LRESULT ICDecompressExBegin(HIC, DWORD, LPBITMAPINFOHEADER, LPVOID, int, int, int, int, LPBITMAPINFOHEADER, LPVOID, int, int, int, int)' previously defined here
  432 |   __CRT_INLINE LRESULT WINAPI ICDecompressExBegin(HIC hic,DWORD dwFlags,LPBITMAPINFOHEADER lpbiSrc,LPVOID lpSrc,int xSrc,int ySrc,int dxSrc,int dySrc,LPBITMAPINFOHEADER lpbiDst,LPVOID lpDst,int xDst,int yDst,int dxDst,int dyDst) {
      |                               ^~~~~~~~~~~~~~~~~~~
make[2]: *** [avs_core/CMakeFiles/AvsCore.dir/build.make:1682: avs_core/CMakeFiles/AvsCore.dir/filters/AviSource/avi_source.cpp.obj] Error 1

compilation script :

#! /bin/sh

rm -rf builddir && mkdir builddir && cd builddir

cmake \
    -DCMAKE_TOOLCHAIN_FILE=../cross_toolchain.txt \
    -DCMAKE_INSTALL_PREFIX=C:/Documents/msys2/opt/avs \
    -DCMAKE_VERBOSE_MAKEFILE:BOOL=FALSE \
    -DCMAKE_BUILD_TYPE=Debug \
    -DCMAKE_C_FLAGS="-Og -g3 -ggdb3 -pipe" \
    -DCMAKE_CXX_FLAGS="-Og -g3 -ggdb3 -pipe " \
    -DCMAKE_EXE_LINKER_FLAGS="-s" \
    -DCMAKE_SHARED_LINKER_FLAGS="-s" \
    -DBUILD_SHARED_LIBS=ON \
    -G "Unix Makefiles" \
    ..

make -j8

cross compilation file :

set(CMAKE_SYSTEM_NAME Windows)
set(CMAKE_SYSTEM_PROCESSOR AMD64)

# binaries
set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)
set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
set(CMAKE_LINKER x86_64-w64-mingw32-ld)
set(CMAKE_STRIP x86_64-w64-mingw32-strip)
set(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)

# flags
set(CMAKE_C_FLAGS "-IE:/Documents/programmes_x64/msys2/home/vtorri/ewpi_64/include -D__USE_MINGW_ANSI_STDIO=1 -D_WIN32_WINNT=0x0601")
set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS} -DHWY_COMPILE_ONLY_SCALAR")

set(CMAKE_C_FLAGS_DEBUG "-Og -g3 -ggdb3 -D__USE_MINGW_ANSI_STDIO=1")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DHWY_COMPILE_ONLY_SCALAR")

set(CMAKE_C_FLAGS_RELEASE "-O2 -pipe -march=native -D__USE_MINGW_ANSI_STDIO=1")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -DHWY_COMPILE_ONLY_SCALAR")

set(CMAKE_SHARED_LINKER_FLAGS "-LE:/Documents/programmes_x64/msys2/home/vtorri/ewpi_64/lib")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_SHARED_LINKER}")

[qyot27]

It's the -Og flag screwing it up. From the GCC manual:

Otherwise -Og enables all -O1 optimization flags except for those that may interfere with debugging:
<list>

The very same thing happens if you use -O1.

[vtorri]

ok, so -O2 -g will work
thanks