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authorTim van der Molen <tim@kariliq.nl>2020-06-15 19:51:36 +0200
committerTim van der Molen <tim@kariliq.nl>2020-06-15 19:51:36 +0200
commit5e4c6de73a023e480a909aac1eb23d93ceb4d0fa (patch)
tree0a3f9e59cad621a17c8ed3db447285ae1d983cca /test/huge.png
parenta624883d92ea54886b739f1000e39ccf1afc5577 (diff)
Enable --version-sort on systems without strverscmp()
The --version-sort option requires strverscmp(), but this is a glibc extension that does not exist on OpenBSD and other systems. To enable --version-sort on those systems, provide an internal implementation of strverscmp(). The implementation is from the musl C library and is MIT-licensed. The build process remains the same: the verscmp flag should be set to 1 only if strverscmp() is available in libc. If verscmp is 0, then the internal implementation is used.
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