Link against zstd, which current ProteoWizard needs

[percolator]

The problem

A build against a ProteoWizard fetched today fails at the link step:

/usr/bin/ld: /build/tools/lib/libpwiz_data_msdata_core.a(BinaryDataEncoder.o):
  undefined reference to `ZSTD_compress'
  undefined reference to `ZSTD_getErrorCode'
  undefined reference to `ZSTD_defaultCLevel'
  ...
collect2: error: ld returned 1 exit status
make[2]: *** [src/CMakeFiles/maracluster.dir/build.make:120: src/maracluster] Error 1

ProteoWizard compresses binary data with zstd now, so pwiz_data_msdata_core references it. Two things are missing on our side:

1. admin/builders/install_proteowizard.sh creates plain-name symlinks for the Boost components only (its line 77). bjam names its output libzstd-gcc11-mt-s.a, so -lzstd finds nothing.
2. cmake/FindProteoWizard.cmake never asks for the library, so it is not on the link line at all.

The fix

A symlink for zstd alongside the Boost ones, and an optional find_library in the find module. Optional because ProteoWizard releases predating the zstd compression do not build it; the message says so when it is absent. It is appended after the libraries that reference it, which is what a single-pass linker needs.

Testing

Ubuntu 22.04, gcc 11, ProteoWizard 3.0.26260 built by admin/builders/install_proteowizard.sh from this branch. master does not link at all on that toolchain; with this change it builds and maracluster unit-test passes.

Found while preparing #35, but independent of it.

🤖 Generated with Claude Code

https://claude.ai/code/session_01D7vADr6Z93sRBvfNGHUwW6