0220c6376d
Both are leaf deps (JFJochPreview / JFJochIndexing) that only our own code looks for, so building them ourselves removes the system-package lottery and gives a reproducible, statically-linked build on every platform. - libtiff: FetchContent, library only (jbig/zstd/lzma/jpeg/old-jpeg/tools/ tests off). The C++ binding (TIFF::CXX / libtiffxx) is packaged inconsistently across distros -- missing on Rocky 9 -- and absent on Windows, so find_package(TIFF COMPONENTS CXX) was unreliable; that call is removed and JFJochPreview links the tiff/tiffxx targets directly. GitHub mirror because upstream (gitlab) is unreachable from some restricted hosts. - FFTW: FetchContent single precision (ENABLE_FLOAT) from the release tarball -- the git repo ships no pre-generated codelets (needs OCaml genfft). It's now always available, so the CPU FFT indexer is always built and JFJOCH_USE_FFTW always defined; the "FFTW disabled" path is gone. Static (libfftw3f.a) via the global BUILD_SHARED_LIBS OFF. Verified on Linux: jfjoch_viewer builds and links libfftw3f.a + libtiff*.a, all static. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>