appveyor.yml: Downgrade llvm and clang packages for the moment

The latest llvm and clang packages somehow break the doxygen binary. To fix
this use an older known to work version for now.

Signed-off-by: Alexandra Trifan <Alexandra.Trifan@analog.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

appveyor.yml

@@ -41,6 +41,8 @@ build_script:
     - C:\msys64\usr\bin\bash -lc "pwd"
     - C:\msys64\usr\bin\bash -lc "pacman -Rs --noconfirm mingw-w64-i686-gcc-ada mingw-w64-i686-gcc-fortran mingw-w64-i686-gcc-libgfortran mingw-w64-i686-gcc-objc"
     - C:\msys64\usr\bin\bash -lc "rm /mingw32/etc/gdbinit"
+    # Newer llvm breaks doxygen, use old version for now
+    - C:\msys64\usr\bin\bash -lc "pacman -U --noconfirm http://repo.msys2.org/mingw/i686/mingw-w64-i686-llvm-5.0.0-3-any.pkg.tar.xz http://repo.msys2.org/mingw/i686/mingw-w64-i686-clang-5.0.0-3-any.pkg.tar.xz"
     - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -Sy  mingw-w64-i686-gcc mingw-w64-i686-libusb mingw-w64-i686-cmake mingw-w64-i686-libxml2 mingw-w64-i686-pkg-config mingw-w64-i686-libzip mingw-w64-i686-doxygen"
     - C:\msys64\usr\bin\bash -lc "cmake -G '%GENERATOR%' -DGIT_EXECUTABLE=C:/Program\ Files/Git/cmd/git.exe -DCMAKE_BUILD_TYPE=%configuration% -DCMAKE_INSTALL_PREFIX=/mingw32 -DCMAKE_C_COMPILER:FILEPATH=/mingw32/bin/i686-w64-mingw32-gcc.exe -DCMAKE_CXX_COMPILER:FILEPATH=/mingw32/bin/i686-w64-mingw32-g++.exe -DCSHARP_BINDINGS:BOOL=OFF -DPKG_CONFIG_EXECUTABLE:FILEPATH=/mingw32/bin/pkg-config.exe -DENABLE_IPV6:BOOL=OFF -DPYTHON_BINDINGS:BOOL=OFF -DLIBSERIALPORT_LIBRARIES=/c/libs/32/libserialport.dll.a -DLIBSERIALPORT_INCLUDE_DIR=/c/include /c/projects/libiio && make -j3"
 
@@ -53,6 +55,8 @@ build_script:
     - C:\msys64\usr\bin\bash -lc "pwd"
     - C:\msys64\usr\bin\bash -lc "pacman -Rs --noconfirm mingw-w64-x86_64-gcc-ada mingw-w64-x86_64-gcc-fortran mingw-w64-x86_64-gcc-libgfortran mingw-w64-x86_64-gcc-objc"
     - C:\msys64\usr\bin\bash -lc "rm /mingw64/etc/gdbinit"
+    # Newer llvm breaks doxygen, use old version for now
+    - C:\msys64\usr\bin\bash -lc "pacman -U --noconfirm http://repo.msys2.org/mingw/x86_64/mingw-w64-x86_64-llvm-5.0.0-3-any.pkg.tar.xz http://repo.msys2.org/mingw/x86_64/mingw-w64-x86_64-clang-5.0.0-3-any.pkg.tar.xz"
     - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -Sy  mingw-w64-x86_64-gcc mingw-w64-x86_64-libusb mingw-w64-x86_64-cmake mingw-w64-x86_64-libxml2 mingw-w64-x86_64-pkg-config mingw-w64-x86_64-libzip mingw-w64-x86_64-doxygen"
     - C:\msys64\usr\bin\bash -lc "cmake -G '%GENERATOR%' -DCMAKE_BUILD_TYPE=%configuration% -DCMAKE_INSTALL_PREFIX=/mingw64 -DCMAKE_C_COMPILER:FILEPATH=/mingw64/bin/x86_64-w64-mingw32-gcc.exe -DCMAKE_CXX_COMPILER:FILEPATH=/mingw64/bin/x86_64-w64-mingw32-g++.exe -DCSHARP_BINDINGS:BOOL=OFF -DPKG_CONFIG_EXECUTABLE:FILEPATH=/mingw64/bin/pkg-config.exe -DENABLE_IPV6:BOOL=OFF -DPYTHON_BINDINGS:BOOL=OFF -DLIBSERIALPORT_LIBRARIES=/c/libs/64/libserialport.dll.a -DLIBSERIALPORT_INCLUDE_DIR=/c/include /c/projects/libiio && make -j3"