crchecker

A small tool to check files with crc32 hashes in their filenames for correctness.

Build Instructions

The tool depends on either the aws-checksums library: awslabs/aws-checksums or alternatively good old zlib.

Be aware that aws-checksums will be a lot faster if you have a modern CPU, for older CPUs zlib may be faster, I have not tested it yet.

On my Ryzen 9 3900X aws-checksums is about twice as fast, see doc/benchmark.txt for details.

I may consider implementing mmapped io instead of normal fopen(), if it makes any difference. Problem is, on small files fopen is faster, since it needs a lot less time to set up it's ressources. Big files may benefit, so if it gets implemented, there'll be a minimal file size, with everything below staying with fopen().

Build from git

git clone https://github.com/brainpower/crchecker.git --recurse-submodules
meson -Dwith-checkarg=subproject build
ninja -C build

Build from git with tests

git clone https://github.com/brainpower/crchecker.git --recurse-submodules
meson -Dwith-checkarg=subproject -Dtests=enabled build
ninja -C build test

Build from release tarball

wget https://github.com/brainpower/crchecker/releases/X.Y.tar.gz

Now either download a release of checkarg into 3rdparty/checkarg, or build and install it system wide.

For the former, see the meson and ninja commands of the "Build from git"-instructions, for the latter, just do:

meson build
ninja -C build

Optionally enable tests, if you want.