Compiling rdiff.exe for Windows

[Rasjid Wilcox]

Hi all,

Have had no issues building the current master git branch for linux, but have not had a lot of joy compiling rdiff.exe for Windows.

I have tried building under Linux following the cross-compiling instructions at https://gitlab.kitware.com/cmake/community/-/wikis/doc/cmake/cross_compiling/Mingw.

This fails with:

CMake Error at CMakeLists.txt:35 (message):

  No target CPU architecture set

I have tried building under Windows using the command-line tools for VS 2019.

That fails with:

...

-- Check size of size_t

-- Check size of size_t - done

-- Check size of unsigned int

-- Check size of unsigned int - done

-- Check size of unsigned long

-- Check size of unsigned long - done

-- Check size of unsigned short

-- Check size of unsigned short - done

-- Compiling to Win32 - printf "%zu" size_t formatting support disabled

-- Check if the system is big endian

-- Searching 16 bit integer

-- Check size of unsigned short

-- Check size of unsigned short - failed

-- Check size of unsigned int

-- Check size of unsigned int - failed

-- Check size of unsigned long

-- Check size of unsigned long - failed

CMake Error at C:/Program Files/CMake/share/cmake-3.17/Modules/TestBigEndian.cmake:50 (message):

  no suitable type found

Call Stack (most recent call first):

  CMakeLists.txt:115 (TEST_BIG_ENDIAN)

Any suggestions or pointers would be greatly appreciated.

Thanks in advance,

Rasjid.

[Martin P]

I've never tried this, but it seems to be a generic CMake issue, not something about rdiff. You could look at https://stackoverflow.com/q/11944060/243712 for example.

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[Rasjid Wilcox]

For reference, I ended up installing MSYS2 (https://www.msys2.org/), hoping for an easier process of compiling on Windows.

Turns out it was even easier than planned.

$ pacman -S mingw-w64-i686-librsync

installs a binary version which I can use directly, no compiling required.

Cheers,

Rasjid.

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[Martin P]

Great! 

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