zstd

• clear’s fopen patch has an m mode (rbm) that is only for glibc
• The notrace patch is only for gcc 10, and is not needed with gcc 11+ as LTO works with zstd
• The test target is expensive, use shortest (aka check) instead
• Prefer zstd -T0 to zstdmt and pzstd as it is more modern
• Level 3 is good enough; after level 19 it will regress
• make is the officially maintained build system (all other build systems are “compatible” and 3rd-party maintained)
• HAVE_ZLIB, HAVE_LZMA and HAVE_LZ4 are automatically enabled when detected at build time; disable them explicitly
• No need to specify lib-mt build target as the dynamic library is multithreaded by default; and even though the static library is single-threaded it is being removed so that won’t matter
• -pthread is included in libzstd.pc and is automatically passed when linking against it

References

• https://github.com/facebook/zstd/blob/dev/examples/README.md
• https://github.com/facebook/zstd/blob/dev/lib/README.md
• https://github.com/facebook/zstd/blob/dev/programs/README.md
• https://github.com/facebook/zstd/blob/dev/tests/README.md